CUB CADET 1320 Service Manual

Overview of Cub Cadet 1320

The Cub Cadet 1320 is a compact, versatile riding lawn mower designed to balance power, precision, and maneuverability for residential use. This section provides a concise framing of the machine’s role within Cub Cadet’s lineage of outdoor power equipment, highlighting how design choices support reliable operation in typical backyard environments. Emphasis is placed on understanding the 1320’s intended tasks, including efficient mowing on varied terrain, trimming of edges, and routine maintenance that preserves performance over time. By familiarizing yourself with the 1320’s core capabilities, you can approach servicing with context for how components interact under normal use and typical load conditions.

The 1320 carries forward Cub Cadet’s heritage of durable hydrostatic ride-on mowers, integrating user-friendly controls, a robust cutting system, and a compact footprint suitable for navigating smaller properties. Its lineage informs the selection of materials, fasteners, and protective features intended to withstand regular exposure to grass clippings, dust, and moisture. The machine is commonly paired with a mid- to heavy-duty deck and a reliable powertrain designed for consistent throttle response and smooth operation. Understanding the product lineage helps technicians anticipate common wear points and align repair strategies with the original design intent.

The Cub Cadet 1320 ships with specifications tailored to residential lawn care, including engine displacements, deck width, transmission type, and hydraulic system characteristics. Critical specifications to verify during servicing include engine model and hour meter status, belt routing for the deck drive, and electrical system integrity. Safety interlocks, PTO operation, and voltage checks are integral to diagnosing functional issues and ensuring the mower operates within manufacturer tolerances. A clear grasp of these specifications supports accurate fault isolation and component replacement decisions, reducing downtime and preserving warranty compliance where applicable.

Safety and compliance are foundational to the 1320’s design and the maintenance routines described in this manual. The machine incorporates protective shrouds, operator presence controls, and proper grounding practices to minimize the risk of injury during operation and service. When performing maintenance, always disconnect the battery and release any stored energy in hydraulic or spring-loaded systems before proceeding with component access. Adherence to OEM torque specifications, fastener types, and lubrication intervals helps maintain safety features and ensures that the machine remains compliant with applicable standards for consumer outdoor power equipment. Regular review of safety notices and updated service bulletins is recommended to maintain ongoing compliance and safe operation.

Tools and safety equipment

Personal protective equipment is essential for anyone performing maintenance on a Cub Cadet 1320 or similar outdoor power equipment. Always wear safety glasses or a full-face shield to protect your eyes from flying debris, splashes, or sudden component failures. Gloves designed for mechanical work help protect your hands from sharp edges, hot surfaces, and chemical exposure, while providing enough dexterity to handle small fasteners and tools. Depending on the task, consider additional protective gear such as hearing protection in loud environments, and a breathable long-sleeve layer to guard against cuts and scrapes. Foot protection with sturdy, non-slip boots reduces the risk of slipping on oil or fuel spills and provides ankle support during ladder or platform work. Finally, keep a first aid kit, fire extinguisher, and a briefability of emergency contact information readily accessible in your workspace for quick response if needed.

Essential hand tools and power tools must be selected based on the specific service procedures for the Cub Cadet 1320. Start with a metric and SAE tool assortment that covers common fasteners found on the machine, including socket wrenches, combinations wrenches, pliers, and screwdrivers of various profiles. A quality torque wrench is critical for reassembly to specification, preventing under- or over-tightening that could compromise safety or performance. Use a robust set of hex and Torx bits to access fasteners in recessed areas, and include a small punch and hammer for precise pin alignment during component removal. For power tools, ensure you have a properly rated impact driver or drill with variable speed control, a clean air or electric compressor for pneumatic tools if applicable, and an emergency shutoff switch or battery disconnect to isolate the electrical system before work begins. Always inspect tools for damage and ensure blades, bits, and adaptors are in good condition before use to avoid tool failure mid-service.

Safe handling and storage of fuel and lubricants is a fundamental safety practice when servicing small engines and power equipment. Store gasoline in approved, clearly labeled containers away from heat sources and direct sunlight, and never siphon fuel by mouth. In working areas, maintain a strict order where fuel containers, oils, and cleaners are segregated to prevent cross-contamination and accidental spillovers. When filling or draining fluids, perform these tasks on a non-porous, level surface with a suitable containment tray to catch spills and allow for proper cleanup. Use approved absorbents and disposal methods for any used oil, fuel, or solvent spills, and be mindful of environmental regulations governing hazardous waste. Keep fire safety equipment and spill kits within reach, and never smoke or operate flame-producing devices in proximity to fuel storage or engine hot surfaces. Finally, always follow the machine’s service manual guidelines for specific fluid types and capacities, and label all containers to avoid mix-ups during maintenance tasks.

The identification and specifications for the CUB CADET 1320 begin with precise model and serial number locations. Locate the model plate on the frame near the operator’s station or on the left side of the dash panel, where it is clearly stamped or labeled for quick reference. The serial number is typically found on a dedicated tag or embossed plate adjacent to the model number, and it may be used to verify production year and specific configuration. For accurate maintenance records, record both the model and serial numbers in your service log before performing any procedures. If the plate is obscured or damaged, consult the user manual’s diagram pages or contact the manufacturer’s support line to obtain the correct identification data for this unit. Accurate identification ensures you source the correct parts and follow the proper torque specs and service intervals.

Engine type and displaced power are key factors in determining service intervals and compatible replacement parts. The Cub Cadet 1320 commonly utilizes a specific air-cooled, gasoline-powered engine with a defined displacement measured in cubic centimeters. Confirm the exact engine model stamped on the engine cover or nameplate, and cross-check the displacement value and horsepower rating. This information guides you in selecting oil type and capacity, fuel recommendations, spark plug type, and air filter specifications. It also informs you of compatible carburetor settings and cooling fan operation, which are critical for reliable starts and steady performance under load. When performing maintenance, ensure you identify whether the engine is a single-cylinder or twin-cylinder configuration, as this affects valve clearance checks and compression testing procedures.

Electrical system overview covers the essential functions that keep the machine operable and safe. The system includes a 12-volt electrical architecture with a battery charging circuit, starter motor, ignition switch, key switch (if applicable), fuses, and ground points. Inspect battery connections for clean, tight terminals and verify the alternator charging output with a multimeter during routine service. Replace corroded or damaged fuses and ensure wiring harnesses are intact and routed away from hot surfaces or moving parts. Pay particular attention to the safety interlocks, such as seat and PTO switches, which must be tested to confirm they disable the engine when required. A well-documented electrical schematic can assist in troubleshooting no-start conditions, dead lights, or intermittent electrical faults without resorting to guesswork.

Lubrication and cooling specifications detail the requirements for the engine, transmission, and hourly-charged components to prevent premature wear. Check the owner's manual for the recommended grade and viscosity of engine oil, as well as the exact oil capacity for each fill point. Regularly inspect the cooling fins and shroud for debris buildup and ensure there is adequate airflow around the engine to prevent overheating during operation. For gearboxes or hydrostatic transmissions, observe the prescribed lubricant type and capacity, and monitor dipstick levels as part of routine service. Establish a maintenance routine that includes oil changes at specified hours, air filter cleaning or replacement, and belt tension and condition checks, to maintain performance and extend the life of the machine. In all lubrication tasks, use clean tools and follow safe procedures to avoid contamination of oil or fuel systems.

The initial inspection and preparation phase is critical to ensuring safe and effective service of the Cub Cadet 1320. Begin by confirming the machine’s overall condition, noting any visible damage, loose fasteners, or fluid leaks. Check the operator controls for smooth operation, including the speed lever, transmission engagement, and parking brake. Inspect the tires for proper inflation and tread wear if applicable, and verify that the blades or cutting attachments are secure and undamaged. This first assessment sets the baseline for all subsequent maintenance steps and helps identify tasks that require immediate attention before disassembly can begin.

For the pre-service inspection checklist, document the model and serial numbers, hours of operation, and any recent repairs or maintenance history. Verify that all safety features are present and functioning, such as blade engagement guards, belt covers, and the operator presence switch, if equipped. Conduct a leak check for gasoline, oil, and hydraulic fluids, and note any unusual odors or signs of contamination. Ensure the battery is secure, terminals are clean, and there is adequate charge or a condition suitable for testing. Completing this checklist provides a thorough snapshot of the machine’s readiness and helps prioritize safety-related tasks.

Degreasing and cleaning procedures are essential to identify wear and corrosion that might be obscured by grime. Start by disconnecting power sources and removing any heavy debris from the surface with a brush or air gun, taking care to avoid forcing dirt into openings. Apply a suitable degreasing solvent to engine components, chain drives, and the underside of the deck, allowing time for the solvent to break down built-up grease. After soaking, scrub with soft brushes and rinse with clean water, ensuring electrical connectors and exposed controls stay dry. Dry all parts thoroughly to prevent moisture ingress before proceeding with disassembly or further inspection. A clean machine not only reveals wear more clearly but also reduces the risk of contaminating new parts during reassembly.

Disassembly prerequisites and tagging parts involve organizing fasteners and components to preserve the correct order during reassembly. Begin by removing the batteries or power sources and isolating cables with labeled connectors or color-coded tags. Create a labeled part tray or magnetic mat for screws, nuts, and small components, and photograph critical subassemblies before removal to assist with later reassembly. Use clearly marked tags on hoses, wires, and linkages to indicate routing and orientation, and store removed parts in a logical sequence that mirrors the service procedure. When possible, consult the service manual for torque specifications and sequence guidelines, and maintain cleanliness to prevent contamination of bearings, seals, and gaskets. Proper tagging and organization streamline the repair process and reduce the likelihood of misplacing components during service.

The process of removing the engine from a Cub Cadet 1320 chassis begins with a careful preparation of the work area and securing of all tools. Begin by disconnecting the spark plug wire and removing the battery connections to prevent accidental starting. Drain any remaining fuel from the tank into an approved container to reduce weight and avoid spills during handling. Document the routing of hoses and electrical connectors as you disconnect them, taking photos if necessary to aid reassembly. Support the engine with a suitable hoist or jack, ensuring that it is balanced and stable before any lifting begins. Label all fasteners and brackets as they are removed to simplify the installation process later.

When removing the engine, detach the drive belt or pulleys and carefully loosen engine mounting bolts that secure the engine to the chassis. Take note of any spacers or shims that may be in place and preserve their orientation. If the exhaust or intake components are attached directly to the engine, remove these with attention to gasket integrity and clamp positions. It is essential to keep the wiring harness and connectors organized, allowing for clean routing during installation. With the engine supported, gradually lift it free from the chassis, ensuring that no components contact the cutting deck or other sensitive hardware. Once clear, place the engine on a padded stand or bench for inspection and service as needed.

Installing the engine requires careful alignment with the chassis mounting points and drive train. Begin by aligning the transmission shaft or drive belt alignment marks and ensuring that the output shaft sits squarely within the mounting area. Use appropriate spacers or shims as specified by the manufacturer to achieve correct alignment and belt tension. Reattach mounting bolts in a cross pattern to gradually pull the engine into position, avoiding over-tightening that could induce distortion. Reconnect the exhaust and intake assemblies with new gaskets if necessary, and verify that clamps are secure without overtightening. Reconnect the fuel line and vacuum hoses, inspecting for cracks or signs of wear, and replace as required. Finally, restore the electrical connections, including the ignition switch, sensors, and fuel shutoff, ensuring solid, corrosion-free contacts.

Fuel system considerations during installation are critical for reliability and safety. Inspect the fuel tank, lines, and carburetor for leaks or damage before reassembly. Replace any degraded fuel lines and ensure that hose clamps are secure yet not overly tight to prevent collapse. When routing fuel lines, keep them away from hot exhaust components and sharp edges that could cause deterioration over time. If the engine uses a carbureted system, verify that the float level and needle valve are correctly set to prevent flooding. After installation, perform a careful fuel system check by priming the fuel line and inspecting for leaks at every joint. Finally, check the exhaust system for proper clearance and torque all exhaust fasteners to the manufacturer’s specification to prevent leaks and maintain safe operation.

Fuel delivery components and testing require a methodical approach to ensure reliable starting, efficient operation, and long service life for the Cub Cadet 1320. Begin with a careful visual inspection of all lines, fittings, and the fuel shutoff valve for signs of cracks, leaks, or damage. Wear gloves and eye protection during inspection, as fuel exposure can irritate skin and eyes. Use a clean, dry surface to lay out components and light to inspect for small cracks or pinhole leaks that may not be obvious at first glance. When testing lines, carefully squeeze hoses and look for soft spots or bulges that indicate deterioration, and replace any compromised sections promptly to prevent air leaks and misfires. For the fuel tank, verify that the vent is clear and not obstructed, as a blocked vent can create a vacuum and hinder fuel flow. Use a calibrated fuel pressure gauge where applicable to confirm that the delivery pressure remains within the manufacturer’s specifications, and document readings for future reference. If you encounter persistent starting issues, check for clogs in the fuel pickup or screen and ensure the tank cap seals properly to maintain proper venting. Always dispose of any gasoline-soaked rags safely and in accordance with local regulations to prevent fire hazards.

Carburetor adjustment and diagnostics demand careful adherence to specification values and a systematic workflow. Start with a clean engine and a dry environment to avoid contaminants entering the carburetor internals during adjustment. Remove the air cleaner and inspect the carburetor body for signs of fuel staining, which may indicate past leaks. Use the correct screwdriver and tools to adjust the high-speed and low-speed mixture screws, making small, incremental turns and testing engine response after each adjustment. Record tachometer readings and throttle position to correlate fuel mix with engine performance, ensuring a smooth idle, good acceleration, and stable operation without black smoke or backfiring. If the engine experiences flooding, open the choke and tip the mower to drain excess fuel from the carburetor bowl, then start with a leaner setting once fuel flow has stabilized. When diagnosing sticking or gummed jets, disassemble the carburetor only if you have the proper rebuild kit and a clean bench, and follow the manual’s sequence to avoid misalignment of gaskets and to ensure proper sealing. After any adjustment or service, recheck the air filter, gaskets, and mounting screws for tightness to maintain consistent carburetor performance. Document all adjustments and any observed symptoms to assist future troubleshooting and to support warranty requirements.

Fuel filter and lines inspection involves thorough scrutiny of every segment in the fuel delivery chain for obstruction and reliability. Start by isolating the fuel line at the tank and at the carburetor to test for flow using a clean container and a known-good fuel source; a steady, unimpeded flow indicates a clear line, while irregular or reduced flow suggests a partial blockage. Inspect the inline fuel filter for signs of clogging, swelling, or deterioration, and replace it according to the mower’s maintenance schedule or if you notice a noticeable drop in performance. Pay particular attention to connection clamps and ferrules; loose fittings can introduce air into the system, causing lean conditions and stalling. When inspecting lines, look for cracks, brittleness, or kinks that could restrict flow or create leak paths. Replace any aging hoses with OEM or equivalent-rated lines rated for fuel exposure, ensuring the correct inside diameter and compatibility with the fuel type used. After reassembly, perform a careful pressure test to confirm there are no leaks at fittings or joints, and re-check for fuel odor or dampness around the connections. If you detect fuel leaks, immediately depressurize the system, clean the area, and address the source of the leak before attempting to run the engine again to prevent fire hazards and environmental contamination.

The electrical system of the Cub Cadet 1320 is critical to reliable operation and safe starting. Regular maintenance of the battery, charging system, and related wiring helps prevent unexpected downtime and electrical faults. Begin with a visual inspection of all accessible electrical components, looking for corrosion, loose connections, damaged insulation, and signs of overheating. Maintain a clean, dry environment around the battery compartment and use a corrosion-inhibiting terminal protector on all battery posts to extend life. When inspecting wiring, check for frayed insulation, cracked conduits, and secure routing that avoids hot surfaces or moving parts. Any abnormal smells, melting plastic, or swollen battery cases require immediate attention and should trigger a more thorough diagnostic approach before operation.

Battery maintenance and replacement is essential for consistent starting performance and normal electrical function. Check the electrolyte level if using a flooded lead-acid battery and top up with the correct distilled water as needed, never overfilling. Clean the battery terminals and clamps before reconnecting, ensuring a snug and corrosion-free connection. If the battery voltage remains below the manufacturer-recommended threshold after a full recharge, perform a load test or have the battery tested at an approved shop to confirm its ability to deliver sufficient current. When replacing the battery, choose a unit with the same or higher cold-cranking amps (CCA) rating and proper physical size to fit the tray and maintain proper venting and clearance. After installation, perform a full system voltage check with the engine off and with the engine running to verify proper charging and to detect any parasitic drains.

Wiring harness inspection requires careful tracing of circuits from the battery to all major components, including the ignition switch, safety switches, and mower controls. Look for chafed or pinched wires, loose splices, and damaged insulation along edges of the frame and under deck areas. Use a multimeter to confirm continuity and verify that grounds are solid and free of rust or paint coatings that could impede electrical contact. Replace any damaged connectors and use heat shrink or industry-standard electrical tape to restore insulation and strain relief. When reassembling, secure harnesses away from moving parts, heat sources, and sharp edges, and ensure that harness routing does not create new points of wear. A well-organized harness reduces the likelihood of future faults and simplifies diagnostic work.

Starter motor and charging system diagnostics involve verifying that the starter motor receives adequate voltage and that the alternator or charging coil, if present, maintains proper charging under engine operation. When the engine is cranking slowly or fails to start, test the battery voltage under load using a suitable load tester, comparing results to the specified ranges. Check the starter solenoid operation by bridging the connections temporarily with the ignition in the proper position and observing whether the motor engages smoothly without excessive noise or heat. Inspect the charging system by measuring the battery voltage with the engine running; a healthy system typically shows 13.8 to 14.8 volts, indicating proper regulation. If readings deviate significantly, inspect the alternator or charging coil, the voltage regulator if present, and associated wiring for faults, and repair or replace components as required. In all cases, disconnect the ignition power before performing mechanical inspections to prevent accidental starting, and use proper PPE to guard against shocks or sparks.

Drive system and transmission maintenance

Maintenance of the drive system and transmission is critical for reliable operation and optimal performance of the Cub Cadet 1320. Begin with a thorough inspection of the transmission housing for signs of oil leakage, cracks, or abnormal wear. Check that mounting bolts are snug and that the unit is properly aligned with the drive belt and pulleys. Confirm that ventilation or cooling passages are clear to prevent overheating during operation. Regularly verify fluid levels if the transmission uses a hydraulic or gear-lubricant system and top off as specified by the manufacturer’s guidelines. Document any deviations from normal operating conditions to establish a maintenance baseline for future service intervals.

Transmission type and service intervals require understanding of the exact configuration used in the machine. The 1320 commonly employs a hydrostatic or gear-type drive system, each with distinct service needs. For hydrostatic units, monitor hydraulic fluid cleanliness and temperature, replace filters at recommended intervals, and perform a cautious system bleed if instructed by the service manual. For gear-driven transmissions, inspect gear teeth for pitting, chips, or unusual backlash, and change the lubricant according to the interval chart to prevent gear wear. Establish a routine that aligns with usage patterns, seasonal storage, and load conditions to sustain smooth and responsive drive performance. Maintain a log detailing fluid changes, filter replacements, and any observed performance changes during operation.

Drive belt inspection and replacement is essential for preserving power transfer and preventing belt-driven failures. Inspect the belt for cracks, glazing, fraying, and signs of uneven wear, and check belt tension per the manufacturer’s specification. When misalignment is detected, verify pulley alignment and adjust as needed to avoid premature belt wear. Replacement intervals depend on usage, but high-mileage or rough-terrain use typically necessitates more frequent changes. When installing a new belt, ensure the correct part number and properly seat the belt in the sheaves without twisting. After replacement, recheck belt tension and observe the drivetrain during a brief test run to confirm smooth engagement and no rubbing or slippage. Document belt condition and replacement dates to track maintenance history.

Axles, gears, and differential checks require careful examination of lubrication, clearances, and noise indicators. Inspect axle housings for leaks or cracks and verify that seals and gaskets remain intact. Check differential bearings and gear mesh for unusual play, noise, or overheating, which can indicate wear or insufficient lubrication. Confirm that lubricant levels meet specification and replace with the correct viscosity as directed by the service manual. During operation, listen for grinding, whining, or clunking sounds that may signal worn gears or failing bearings, and address them promptly. When performing adjustments, use proper shims and reference marks to maintain proper gear alignment and preload, ensuring smooth operation and extending component life. Keep a detailed maintenance record for axles, gears, and differentials to support proactive service planning and reliability.

The steering linkage system on the Cub Cadet 1320 combines a precision layout of rods, joints, and tie-rod assemblies designed to provide accurate and responsive turning behavior. Regular inspection ensures that linkage components maintain proper alignment and minimal play, which is critical for safe operation and predictable steering input. Begin by checking all visible linkage points for play, wear, or bending, and verify that mounting bolts are tightened to the manufacturer's torque specifications. Any looseness in joints or excessive free play should be addressed immediately to prevent sudden steering changes during operation. When performing adjustments, use the manufacturer's service manual as a reference for correct alignment angles and measurement tolerances, and replace worn parts with genuine or equivalent quality components. Proper lubrication of pivot points reduces friction and extend component life, so apply a light coat of recommended grease to bushings and pivot pins during inspection or replacement. Keep steering linkage clean from debris and corrosion, particularly in harsh outdoor environments, to preserve smooth operation and extend service intervals.

Understanding hydraulic system basics and service is essential for maintaining steering efficiency and overall vehicle performance. The Cub Cadet 1320 utilizes hydraulic assist to support steering effort and provide consistent response across load conditions. Start by inspecting hydraulic fluid levels in the reservoir, ensuring the fluid is within the marked operating range and free of contaminants. If the fluid appears dark, milky, or has a strong odor, drain and replace it with the recommended hydraulic oil type, following the exact fill procedures. Examine hydraulic hoses and fittings for cracks, leaks, or signs of wear; replace any damaged components promptly to maintain system pressure and prevent air ingress. Bleed the hydraulic lines after any service to remove trapped air, and verify that the system returns to the correct pressure range as specified by the manufacturer. Regularly test steering response under load and at various turning radii to detect subtle issues before they affect control.

Suspension components inspection and adjustment focus on ride quality, stability, and payload handling. Inspect the front and rear suspension arms, springs, dampers, and mounts for cracks, deformation, or worn bushings that could lead to abnormal alignment or reduced damping. Check fasteners for tightness and ensure that mounting points are free of excessive play, replacing any worn or damaged hardware. Adjustments may include setting ride height, camber, toe alignment, and preload on the suspension dampers as recommended by the service guide. When evaluating suspension performance, perform a controlled load test on varied terrain to observe how the system distributes weight and absorbs impacts. Document any deviations in ride height or handling characteristics, and restore proper settings with correct hardware to restore optimal comfort and control. Regular cleaning of suspension components helps prevent dirt intrusion that can accelerate wear and degrade alignment over time.

Cooling system maintenance

The cooling system on the Cub Cadet 1320 is essential for maintaining optimal engine temperatures and ensuring reliable operation across a variety of mowing and hillside conditions. Begin with coolant specifications to ensure proper protection against freezing and overheating. Use a high-quality pre-mixed 50/50 ethylene glycol coolant that is formulated for aluminum engines and is compatible with the vehicle’s materials. Do not mix different coolant types, and always replace the coolant with the engine cold to prevent scalding. Record replacement intervals and verify that the coolant level remains within the recommended markings on the expansion reservoir during routine maintenance checks. Adhering to precise coolant specifications helps prevent scale buildup, corrosion, and premature component wear, extending the life of the cooling system components.

Replacement intervals for the cooling system should be followed closely to maintain efficiency and prevent overheating failures. Inspect the coolant condition at regular service intervals and replace it according to the manufacturer’s schedule or sooner if there are signs of contamination such as rust, sediment, or a noticeable decrease in cooling performance. Visual checks should include examining the expansion tank for cracks, verifying that the radiator cap maintains proper sealing pressure, and confirming that hoses show no signs of cracks, swelling, or leaks. A proactive replacement regime minimizes the risk of overheating under heavy load and improves overall engine reliability, especially in high-temperature climates or extended mowing sessions.

Radiator and shroud inspection is a critical component of routine maintenance. Start with a thorough cleaning to remove dirt, grass clippings, and debris that can impede air flow. Use a soft brush or compressed air to clean the fins, taking care not to bend or damage them. Inspect the radiator shroud for cracks or loose mounting points that could redirect airflow away from the radiator. Check for bent fins caused by impact from debris, and straighten carefully if necessary using gentle pliers. Ensure that the radiator cap seating surface is free of corrosion and sits securely to maintain the correct cooling system pressure. Regular radiator and shroud inspections help maintain efficient heat transfer and prevent overheating during demanding operation.

Thermostat and water pump service requires careful attention to ensure proper coolant circulation. The thermostat should open within the specified temperature range; if it sticks or fails, coolant circulation will be restricted and engine temperatures will rise. When testing, observe whether the engine reaches the normal operating temperature and whether the temperature gauge stabilizes without overshoot. If a faulty thermostat is suspected, replace it with an OEM part and verify proper fit and seating against the gasket to prevent leaks. The water pump must also be inspected for impeller wear, coolant leaks at the weep hole, and bearing smoothness. Listen for unusual noises from the pump and perform a leak check with the system pressurized to the recommended test pressure. Replacing a worn water pump promptly protects the engine from overheating and ensures sustained cooling efficiency during extended operation.

Oil type, capacity, and change intervals: The Cub Cadet 1320 requires a clean, high-quality engine oil that matches the manufacturer’s specifications for ambient operating conditions. Use a detergent oil with the proper viscosity grade recommended in the service manual, ensuring it provides adequate lubrication under load and temperature variations. The oil capacity typically falls within a specific range, and it is crucial to measure the correct amount after an oil change to avoid either excess pressure or insufficient lubrication. Schedule oil changes at regular intervals based on hours of operation and the environment in which the mower is used; high-load usage, dusty conditions, or prolonged operation at high RPMs may necessitate shorter intervals. Always warm the engine before draining to ensure complete evacuation of the old oil, and replace the oil filter if the model includes one, following clean-handling procedures to prevent contamination of the new oil. After completing the change, run the engine briefly, check for leaks, and recheck the oil level with the dipstick to confirm proper fill. Use a clean funnel and a oil drain pan, and dispose of used oil in accordance with local regulations to protect the environment and maintain shop safety.

Air filter inspection and replacement: The air filter system is essential for protecting the engine from dust and debris that can cause increased wear and reduced performance. Inspect the air filter element at regular service intervals and after operating in particularly dusty conditions. A dirty, saturated, or damaged filter should be replaced to restore optimal air flow and fuel-air mixture, which directly affects engine efficiency and power. When inspecting, look for signs of rips, holes, or collapsing media, and ensure the housing seals are intact to prevent unfiltered air from bypassing the filter. During replacement, handle the new filter carefully to avoid deforming the media, and ensure the seal sits evenly within the housing. Clean any dust or debris from the air intake area before installing the new filter, and reseal the housing securely to maintain proper filtration. If the mower uses a dual-filter system, inspect both stages for contamination and replace as needed according to the recommended service intervals. After installation, run the engine briefly and observe for normal idle and smooth operation, noting any changes in performance that might indicate an improper seal or a misfit filter.

Lubrication points and grease procedures: The lubrication system on the Cub Cadet 1320 includes several critical points that require regular greasing to minimize wear and extend component life. Identify all grease zerks and lubrication channels prior to maintenance, and use the type and grade of grease specified by the manufacturer for each point. Apply a conservative amount of grease to each fitting, ensuring it penetrates into bearings and bushings without creating excess grease buildup that can attract dirt. Wipe away any excess after application to prevent contamination of belt drives or cooling fins. For chassis and linkage components, a light, even coating helps to reduce friction and corrosion, while avoiding over-application which can trap dirt and hamper movement. When lubricating, rotate or move the relevant parts to distribute the grease evenly and verify that all moving parts operate smoothly after the procedure. Maintain a clean work environment to prevent introducing grit into lubrication points, and inspect seals and gaskets around lubrication areas for signs of wear or leakage that would warrant replacement. Schedule lubrication at intervals aligned with the mower's use profile, and document the service with mileage or hour readings to support preventive maintenance planning.

The Cub Cadet 1320 is designed with a compact, reliable powertrain and a straightforward control interface to deliver dependable mowing performance. When diagnosing faults, begin with a careful visual inspection to identify obvious issues such as loose connections, damaged wiring, or signs of oil leaks and corrosion. Document any observed symptoms and correlate them with the vehicle’s age, maintenance history, and recent operating conditions. By establishing a clear symptom-to-cause map, you lay a solid foundation for an efficient and safe repair process. Ensure the engine is cool and the battery is disconnected when performing any inspection that involves electrical components to prevent accidental short circuits. Keep a detailed log of findings to reference during repair and for future preventive maintenance planning.

Common symptoms and probable causes cover a range of drivetrain, electrical, and control issues. If the engine fails to start, verify the fuel system, including the fuel level, fuel quality, and fuel pump operation, as well as the condition of the spark plug and ignition system. Engine misfires or rough running may indicate worn or fouled spark plugs, dirty air filters, or improper valve timing, while a lack of power during mowing could point to a restricted fuel line or a dirty carburetor. For electrical symptoms such as a dash that remains dark or warning lights that do not illuminate, inspect the battery condition, terminal cleanliness, fuses, and any failed relays. Additionally, check safety interlocks and switches, as these can prevent operation if out of alignment or damaged. In all cases, cross-reference the symptom with documented service history to determine whether the issue is transient or part of a recurring fault.

Electrical and mechanical diagnostic flowcharts provide a structured approach to isolate faults efficiently. Start with a power-on self-check to confirm that essential systems receive proper voltage. If power is present but outputs are missing, follow the signal path from the ignition switch through the control module to the actuators, measuring continuity and resistance at each connector. For mechanical issues such as chain or belt slip, inspect drive belts, pulleys, and tensioners for wear, cracks, or misalignment, and verify correct belt routing. When diagnosing transmission or hydrostatics, monitor fluid levels and condition, listen for unusual noises, and observe operating response at different throttle and speed settings. Use systematic elimination to narrow down the fault, rechecking after each corrective step to confirm resolution and avoid introducing new issues. Document all measurements and replacement parts to support warranty or service records.

Test equipment usage and safety are essential components of any service procedure. Use a quality multimeter to check battery voltage, resistance, and continuity across circuits, ensuring probes do not short or contact adjacent components. When testing fuel and air systems, employ proper fuel pressure gauges and carburetor synchronization tools as applicable to the model year and configuration. For ignition diagnostics, an inductive timing light can help verify timing and firing order, while a strobe or oscilloscope may be necessary for more advanced diagnostics. Always wear eye protection, gloves, and appropriate PPE, and disconnect power supplies when making or removing circuit connections. After completing tests, reassemble components with proper torque specifications and secure wiring harnesses away from hot surfaces or moving parts to prevent future faults. Maintain a detailed record of test results and the exact component values observed for future reference and maintenance planning.

Careful adherence to these guidelines ensures accurate fault isolation and safe, effective repairs. Start with a thorough symptom assessment, then follow the diagnostic flowcharts to pinpoint probable causes, and finally verify results with proper test equipment. This method reduces troubleshooting time, extends component life, and minimizes the risk of collateral damage during service. When in doubt, consult the official Cub Cadet service documentation for model-specific diagrams and torque specifications to ensure every repair meets factory standards. By combining disciplined diagnostics with precise equipment use, you can restore performance and reliability to the Cub Cadet 1320 efficiently and safely.

Routine maintenance schedules

Establishing a consistent maintenance routine for the Cub Cadet 1320 ensures reliable starting, optimal performance, and extended lifespan of the mowing system and drive components. Begin each session with a visual inspection of the mower exterior, looking for loose fasteners, damaged guards, or obvious signs of wear. Check the air intake area for debris and ensure the cooling system is free of obstructions. Confirm thefuel system connections are secure and free of leaks, and verify the battery terminals are clean and tight. Keeping a calm, methodical approach during these checks reduces the likelihood of sudden failures during peak mowing periods. Maintain a log of completed checks so you can track patterns of wear and anticipate parts replacement before failures occur.

Daily maintenance focuses on safety, reliability, and readiness to operate. Start by removing any grass clippings or dirt from the cutting deck to prevent corrosion and ensure accurate blade contact. Inspect blades for nicks, bends, and balance; dull or damaged blades should be sharpened or replaced following the manufacturer’s guidelines. Verify tire pressure and visual wear on the treads, ensuring even contact with the ground for stable operation. Test the safety switches, including the blade engage and parking brake mechanisms, to confirm proper function. Lastly, check and top off essential fluids if applicable, and ensure fuel quality is maintained to prevent starting difficulties in the morning.

Weekly maintenance expands the scope to drivetrain and electrical systems. Remove and clean the air filter, replacing it if it shows signs of excessive dirt or damage. Inspect the drive belt(s) for cracks, fraying, or glazing, and replace as necessary to maintain proper traction and drive performance. Lubricate pivot points and linkages as specified by the OEM guidelines, avoiding over-lubrication which can attract dirt. Examine the spark plug(s) for signs of wear or fouling and replace according to service intervals. Clean the cooling fins and ensure that cooling airflow is unobstructed to prevent overheating during prolonged mowing sessions. Document any anomalies and address them before they escalate into expensive repairs.

Monthly maintenance should address components that contribute to reliability and efficiency. Perform a thorough blade and deck inspection, measuring blade runout and ensuring proper clearance to prevent uneven cutting. Inspect the cutting height adjustment mechanism for smooth operation and secure mounting; lubricate as required and test for precise height settings. Check the transmission or hydrostatic components for signs of oil leakage or unusual noises and service per the manual’s recommendations. Inspect the battery condition, terminals, and charging system if applicable, replacing aged cells or corroded connections to avoid unexpected outages. Validate overall electrical harness integrity, looking for frayed wires or loose connectors, and reconnect or shield as appropriate to prevent shorts or malfunctions. Finally, perform a full system safety check, confirming that all guards, shields, and emergency stop features are functioning correctly before returning to service.

Seasonal preparation checklist

Seasonal preparation involves adapting the mower to changing operating conditions and storage requirements. At the start of the growing season, inspect the entire mower for any weather-related damage from storage or exposure, and replace worn components before heavy use begins. Assess the fuel system, replacing old fuel and stabilizing additives to prevent varnish buildup and fuel separation during extended use. Conduct a comprehensive blade inspection and sharpening, ensuring the cutting edge remains true and balanced to minimize vibration and maximize cutting efficiency. Verify the electrical system, including battery health and charging performance, to ensure reliable starts after seasonal layups. Finally, review and update the maintenance schedule based on observed wear patterns from the preceding season, establishing more precise service intervals for the upcoming period.

As seasons transition, prepare the machine for storage or renewed use with equal care. For off-season storage, complete a thorough cleaning to remove grass residue, then apply a light protective coating to metal surfaces to deter corrosion. Drain or treat fuel as recommended to prevent gum formation in the carburetor if prolonged inactivity is anticipated. Remove batteries if storing in a cool environment and charge periodically to sustain capacity, or use a smart charger that maintains optimal voltage. When bringing the mower back into service after storage, re-check all fluids, belts, and air filters, and perform a test run to verify safe operation before resuming full mowing duties. This approach minimizes surprises and ensures a smooth transition between seasonal demands.

Record keeping and service logs

A disciplined record keeping system supports preventative maintenance and helps identify recurring issues before they escalate. Create a centralized log that captures the date, mileage or operating hours, performed tasks, replaced parts, and any notes about observed performance. Use consistent terminology and fill out each entry in a timely manner to preserve the accuracy of the history. An effective log enables you to forecast parts needs, schedule preventative services, and justify maintenance expenditures during owner or warranty reviews. Maintain copies of receipts, service bulletins, and OEM recommendations alongside the log for quick reference during future work. Periodically review the entries to identify trends, such as blades wearing unevenly or belts showing progressive wear, which may indicate alignment problems or drivetrain stress that require corrective action. A thorough service log becomes an invaluable asset for maintaining value, performance, and safety of the Cub Cadet 1320 over its service life.

The CUB CADET 1320 is designed for reliable operation, but like any outdoor power equipment, it can encounter common starting and running issues that require careful diagnosis and methodical repair. Begin by verifying the fuel system, including fuel quality, line integrity, and the condition of the fuel filter. Check the air intake for obstructions and confirm that the air filter is clean and properly seated. Inspect the spark plug for signs of fouling or wear and ensure the ignition system grounds are secure. If starting remains problematic, perform a compression check to rule out engine wear, and examine the carburetor for varnish or sticking components, cleaning or rebuilding as needed. When running, listen for unusual noises or a loss of power, which can indicate muffler restrictions, dirty carburetor jets, or a need for valve clearance adjustment in older models. Document any observed patterns, such as temperature-related stalling or intermittent starts, to guide targeted repairs and prevent recurring issues.

Performance and safety related faults on the Cub Cadet 1320 often involve improper belt tension, worn pulleys, or degraded safety switches. Begin by inspecting the drive belt for cracks, fraying, and proper alignment on the pulleys, replacing it if necessary. Check belt tension according to the manufacturer’s specifications and adjust tension to the correct level to restore smooth operation without overloading components. Review the blade engagement mechanism and ensure the PTO is functioning correctly, with no binding or excessive play. Safety interlocks should be tested to confirm they prevent engine restart when the operator is not properly seated or when the transmission is in the incorrect gear. For safety, verify the presence and integrity of shielding, perform a tire pressure check, and ensure the brake or parking mechanism holds the machine stationary on a safe surface during testing. If performance remains compromised, inspect the transmission fluid level and look for signs of leakage or contamination, replacing fluid and seals as required.

Component replacement workflows for the Cub Cadet 1320 require a systematic approach to avoid damage and ensure longevity. Establish a clean, organized workspace with labeled fasteners and magnetic trays to track small parts. When replacing a component such as a spark plug, air filter, or fuel filter, consult the service manual for torque specifications and sequence, and verify new parts meet OEM standards. For more complex replacements like the drive belt, timing components, or transmission parts, remove power sources and isolate the ignition to prevent accidental startup. Use proper hand tools and, when applicable, service manuals that specify the correct disassembly order to minimize the risk of warping housings or damaging seals. After installation, re-check alignment, tension, and clearances, and perform a thorough test run to confirm correct operation and to verify that all safety features engage as intended. Finally, document the replacement with dates and part numbers to support future maintenance and warranty compliance, and provide the operator with a brief run-through of any changes in operation or feel.

Reassembly best practices

Begin reassembly by establishing a clean, organized workspace with clearly labeled fasteners and components. Inspect all parts for wear, damage, or deformation; replace any compromised items before continuing. When reinstalling components, reference the original orientation and mating surfaces to ensure proper engagement and alignment. Use the manufacturer’s specified torque values and sequence to avoid warping or uneven loading, and apply a light coat of appropriate lubricants or anti-seize compounds where recommended. After securing fasteners, perform a tactile check to confirm that moving parts operate smoothly without binding, and reinstall shields or covers only after verifying that no obstructions remain in the moving areas.

Pre operation test run

Before the first start, verify that all safety devices are correctly installed and that guards, switches, and kill mechanisms function as designed. Check the fuel system for leaks, ensure the fuel is fresh and appropriate for the engine, and confirm the correct oil level and type are used. With the spark plug cap or ignition system in place, perform a controlled pre-start check by turning the engine over manually where feasible to confirm compression and valve operation. Install the air filter, ensure the intake is clear, and verify that the cooling system has unobstructed airflow paths. When ready to start, use the manufacturer’s recommended starting procedure, and listen for any unusual noises, knocks, or smoke that would indicate a fault requiring shutdown and inspection.

Operational verification and safety checks

During the initial run, monitor engine temperatures, oil pressure, and RPMs to ensure they stay within the specified operating ranges. Conduct a series of light-load and medium-load tests to assess performance under typical working conditions, listening for irregularities such as misfiring or loss of power. Inspect all belts, pulleys, and drive lines for proper tension and alignment, adjusting as necessary to prevent slip or wear. Verify that the clutch, brakes, and PTO engage and disengage smoothly, and confirm that the safety interlocks deactivate under controlled conditions and re-engage when the operator returns to a safe state. Finally, perform a post-run cooldown and recheck all fasteners, seals, and mating surfaces to ensure the assembly remains secure and leak-free, documenting any observations for future maintenance cycles.

The Cub Cadet 1320 service manual section on Parts and Service Information provides essential guidance for technicians performing maintenance, repair, and part replacement with accuracy and efficiency. This material focuses on three critical pillars: exploded view diagrams, part number reference and ordering, and catalogs for gaskets, seals, and fasteners. By understanding how to interpret exploded views, technicians can quickly identify assembly relationships, verify component placement, and determine the correct sequence for disassembly and reassembly. Accurate part identification minimizes the risk of incorrect replacements, which can lead to poor performance or equipment damage. This section emphasizes meticulous documentation and cross-referencing to ensure that every service action restores the unit to factory specifications.

Exploded view diagrams are a foundational tool for diagnosing issues and planning repairs on the Cub Cadet 1320. These diagrams decompose assemblies into their individual components, displaying how parts interact and fit together. When using exploded views, technicians should note part orientation, fastener types, and the order of assembly, as slight deviations can cause misalignment or improper seal formation. It is important to compare the diagram to the actual machine during disassembly to confirm which variant or revision of a part is installed. Thorough review of these diagrams reduces downtime and minimizes the chance of missing small but critical components such as washers, shims, or clips.

Part number reference and ordering procedures streamline the repair process and ensure timely availability of replacement components. Each part is associated with a unique PN (part number) that corresponds to specific model years and production runs. Technicians should verify the vehicle’s serial number, model designation, and any service bulletins to select the correct PN. The manual advises creating a standardized parts list for recurring maintenance tasks, which accelerates future service events and supports accurate inventory control. When ordering, it is prudent to include a brief description of the fault, the suspected worn component, and the quantity required to avoid miscommunication with suppliers. This approach helps maintain consistent repair quality and reduces the risk of backorders delaying field service.

The gasket, seal, and fastener catalogs within this section provide critical details for ensuring reliable sealing and secure assembly. Gaskets and seals must be matched not only to size but also to material compatibility with fuels, oils, and cooling systems. The catalogs outline recommended materials, thicknesses, and hardness ratings suitable for various operating environments. For fasteners, the catalogs specify thread size, length, grade, and coating, all of which influence clamping force and corrosion resistance. Proper selection of these components prevents leaks, maintains pressure, and sustains the overall integrity of the engine and drive system. Technicians should inspect mating surfaces for damage prior to reinstalling gaskets and seals to guarantee a proper seal and long service life.

In practice, applying the information from the exploded views and catalogs requires a systematic workflow. Begin with a visual inspection and reference the exploded view to confirm each component’s place. Cross-check the PN against your inventory and confirm that you are using the correct gasket or seal for the application. Before reassembly, lay out fasteners in the order of disassembly and replace any worn or corroded items with the exact recommended equivalents from the catalogs. After final assembly, perform functional tests and leak checks to verify that all seals are secure and that the machine operates as designed. Adhering to these guidelines ensures reliable performance, reduces recurrence of failures, and extends the life of the Cub Cadet 1320.

Lockout tagout and energy control are critical procedures for ensuring safe maintenance of power equipment like the Cub Cadet 1320. Before beginning any service, disconnect the spark plug wire and remove the battery if applicable to eliminate the risk of accidental starting. Verify that all sources of energy are isolated, including electrical, fuel, and hydraulic systems, and apply an approved lockout device with a clearly visible tag. Always test the system to confirm it cannot re-energize before any tool or gauge is used. Maintain a dedicated energy control log that records the date, the personnel involved, and the specific equipment and energy sources isolated, which provides traceability for audits and safety reviews.

Work instructions and quality assurance establish a repeatable, accountable process for maintenance tasks on the Cub Cadet 1320. Develop written step-by-step procedures that are clear, concise, and oriented toward observable outcomes. Use checklists to verify that each task has been completed to specification, and ensure that the personnel performing the work are trained and competent for the assigned activities. Implement a system for defect detection and non-conformance reporting so issues can be addressed promptly, analyzed for root causes, and prevented from recurring. Emphasize proper tool selection, torque specifications, and sequence of operations to minimize damage and maximize component life.

Documentation and continuous improvement require meticulous record keeping of all service activities, parts replacements, and performance tests. Maintain a service journal or digital record that captures machine serial numbers, service dates, technician IDs, and the results of functional tests after maintenance. Regularly review maintenance data to identify trends such as recurring failures, wear patterns, or material shortages, and use these insights to update procedures and training materials. Encourage feedback from technicians and operators to refine workflows, reduce downtime, and improve overall reliability. The goal is to establish a culture of proactive maintenance where data informs practice and safety remains the priority during every service event.