CRAFTSMAN 917.374352 Service Manual

The Craftman 917.374352 service manual is a comprehensive reference designed to support technicians and experienced DIY enthusiasts in diagnosing, maintaining, and repairing this outdoor power equipment. It outlines the recommended procedures, tools, and specifications required to safely restore optimal performance. The manual emphasizes methodical troubleshooting, precise torque values, and adherence to manufacturer tolerances to ensure long-term reliability. By following the documented steps, a technician can systematically identify component wear, misalignment, or faults that affect cutting efficiency, engine performance, and overall machine safety. This section provides a foundation for understanding how the manual is organized and how to use it effectively in real-world repair scenarios.

The manual is structured to guide users through a logical sequence of service tasks, from initial assessment to final testing. It includes diagrams, disassembly sequences, and reassembly checkpoints that help prevent common mistakes such as over-tightening fasteners or misplacing small parts. The content is tailored to users with a solid background in outdoor power equipment, ensuring that procedures assume a baseline level of mechanical knowledge. Readers should have access to standard workshop tools, including torque wrenches, feeler gauges, micrometers, and appropriate safety gear. The documentation also references replacement parts and compatible components, enabling precise substitutions when original parts are unavailable.

Safety notices and warnings are integrated throughout the manual to highlight potential hazards associated with gasoline engines, sharp blades, and energized electrical systems. Proper fuel handling, ignition protection, and blade brake operation are emphasized to prevent injuries. The manual advises on isolating power, relieving pressure in the fuel system, and using appropriate PPE before commencing work. It also covers environmental considerations such as proper disposal of engine oil, used filters, and contaminated consumables. These safety guidelines are designed to minimize risk while performing critical maintenance tasks, including carburetor adjustments, spark plug service, air filter replacement, and blade maintenance. Adherence to these warnings is essential for protecting personnel and preserving equipment integrity during service operations.

The CRAFTSMAN 917.374352 model presents a specific configuration intended for reliable lawn and garden maintenance. Understanding the model overview helps technicians verify compatibility with replacement parts and service procedures. Serial number information is essential for determining production batches, revision levels, and any model-specific updates that may affect maintenance steps or warranty coverage. When recording service details, ensure the serial number aligns with the chassis or operator’s manual to prevent cross-model confusion during diagnostics and part ordering. Document any observed anomalies related to the model’s identity, such as label wear or faded stamping, and correlate them with the service history for accurate traceability.

Key dimensions and weight details provide critical data for safe handling, transportation, and setup. Before lifting or moving the unit, consult the official dimensional chart to determine center of gravity and appropriate lifting points. Accurate measurements also assist in parking the equipment on level ground, preventing tip-overs during maintenance procedures. Record deck width, wheelbase, overall length, and height where applicable, and note any modifications that could alter clearance or maneuverability. A precise weight assessment supports safe hoisting procedures and helps technicians plan tool selection and workspace layout for efficient service work.

The powertrain specifications and capabilities define how the mower operates under typical conditions and what maintenance tasks are required to sustain performance. This includes engine type, displacement, horsepower, torque characteristics, and governing performance limits. Documented fuel type, lubrication requirements, air filtration specifications, and cooling system considerations are essential for diagnosing, repairing, and optimizing performance. Additionally, note the transmission type, drive system, clutch engagement behavior, and any variable-speed or hydrostatic features that influence maintenance intervals and troubleshooting steps. Understanding these specifications supports accurate diagnostics, proper part selection, and safe, effective repair procedures.

Tools and replacement parts required

Effective maintenance and repair of the CRAFTSMAN 917.374352 rely on a well-curated set of essential hand tools and specialty equipment. Beginning with basic hand tools, ensure you have a complete metric and SAE screwdriver set, a high-quality adjustable wrench, a socket set with both standard and deep sockets, and a torque wrench capable of precise measurements. A magnetic tool tray and labeled storage for fasteners help keep components organized during disassembly and reassembly. For electrical and ignition work, include a multimeter with continuity testing and a service-grade spark plug socket, along with insulated pliers and a wire stripper/crimper. Precision instruments such as feeler gauges and calipers can aid in accurate alignment and gap measurements, which are critical for optimal engine performance and safe operation.

Specialized tools specific to outdoor power equipment maintenance should be on hand to avoid damage to the machine. A carburetor cleaning kit, including small brushes, compressed air, and carburetor repair kits, is essential for engines of this class. For deck and blade work, you will need a sturdy torque-rated impact driver or breaker bar, a blade nut socket of the correct size, and a blade balancing tool if you intend to service mower blades. A hydraulic jack or sturdy stands provide safe support when lifting the mower for underside access. When dealing with belt replacement or pulley maintenance, have a belt tension gauge, a proper belt cutter, and a pulley puller suitable for the model to prevent damaging components during service.

Recommended replacement parts and consumables should be selected with model-specific compatibility in mind. Maintain a stock of OEM air filters, fuel filters, and spark plugs that match the manufacturer’s specifications for the 917.374352. Keep a supply of high-quality engine oil or lubricant appropriate for the engine type, plus a robust fuel stabilizer and a fuel additive if recommended by the manual. Replacement blades, belts, and pulleys should come from original equipment manufacturer sources to ensure correct dimensions, balance, and performance. O-rings, gaskets, and seal kits compatible with the engine and transmission are essential for preventing leaks and maintaining pressure integrity in critical systems. Consider stocking exhaust gaskets and carburetor gaskets in appropriate sizes to minimize downtime during routine service intervals.

Where to source original equipment manufacturer parts is a key consideration for long-term reliability. Start with the authorized CRAFTSMAN service network or the Briggs & Stratton/CHAMPION engine family parts distributors, depending on the engine model paired with the 917.374352. OEM parts typically include carburetor components, air and fuel filters, spark plugs, gaskets, and belts that meet factory tolerances. If you are unable to locate a direct OEM distributor, check with reputable authorized dealers who catalog genuine parts and provide warranty support. When ordering, verify the exact model number, serial number, and production year to ensure compatibility, as minor revisions can affect fitment. For hard-to-find items, OEM catalogs and cross-reference guides can help identify equivalent parts that maintain performance while preserving warranty terms. Finally, maintain meticulous records of parts purchases and service dates to track wear items and schedule proactive replacements before failures occur.

Safety is the foundation of any effective maintenance and repair work on outdoor power equipment. This section provides practical guidance on lockout tagout and energy isolation, personal protective equipment requirements, and safe lifting and handling practices. Following these procedures helps prevent accidental starts, electrical shocks, and injuries to personnel during service operations. Always verify that power sources are fully isolated before performing any disassembly, inspection, or adjustment work, and communicate clearly with all team members about the status of energy isolation before beginning tasks. A disciplined approach to safety not only protects technicians but also extends the life of the equipment by reducing the likelihood of damage caused by unintended energization or mishandling. Lockout tagout and energy isolation are critical steps whenever performing maintenance on powered equipment. Begin by turning off the engine or electrical source and removing the key or disconnecting the battery, ensuring the device cannot be restarted. Apply a lock and a clearly visible tag that identifies the person responsible and the nature of the work being done. Test the system to confirm there is no residual energy present, including checking for stored electrical energy in capacitors or battery banks where applicable. When multiple technicians are involved, establish a lockout/tagout protocol that designates a single authorized person to remove the lock at the end of the task, and ensure that all locks are accounted for before re-energizing the equipment. Document the energy isolation status in the work order and review any stored energy sources that might require additional precautions, such as fuel systems or hydraulic lines, to prevent unintended releases during maintenance. Personal protective equipment (PPE) requirements must be selected based on the specific task and potential hazards. At minimum, wear safety glasses or a face shield to protect against flying debris, and use hearing protection when operating or testing power equipment in close proximity to others or in enclosed spaces. Gloves should be chosen to resist cut and abrasion hazards when handling sharp components or hot surfaces, while avoiding loose cuffs that could snag on moving parts. Foot protection, such as steel-toed boots, is important for stability and to prevent injuries from dropped tools or components. For tasks involving fuels, lubricants, or solvents, use chemical-resistant gloves and aprons as needed, and ensure adequate ventilation to prevent inhalation hazards. PPE should be inspected before use, and any damaged equipment should be replaced to maintain a safe working environment. Safe lifting and handling practices are essential to prevent musculoskeletal injuries and accidental tool or component drops. Before lifting, assess the weight and balance of the object, and seek assistance or use mechanical lifting devices for heavy or awkward items. Keep your back straight and bend your knees, using leg muscles to lift rather than the back, and avoid twisting while carrying loads. When transporting tools or parts, use appropriate containers, carts, or trolleys to maintain stability and reduce the risk of spills or slips on the work surface. Secure heavy or irregular items to prevent shifting during movement, and position yourself to maintain clear lines of sight and a stable stance. Store equipment and parts securely after maintenance, and return tools to their designated locations to minimize trip hazards and ensure readiness for the next service task.

The maintenance schedule for the Craftsman 917.374352 focuses on proactive care to extend the life of the equipment and ensure safe operation. Implement daily checks that are simple yet effective, including a visual inspection for obvious signs of wear, leaks, or loose fasteners. Lubrication should be performed at the recommended intervals to minimize friction and heat buildup, with attention to exposed moving parts such as linkages, pulleys, and drive components. Recordkeeping should be done consistently to track maintenance history, identify recurring issues, and support warranty or service needs.

Daily checks and lubrication intervals emphasize practicality and reliability. Each use should begin with a quick walk-around to verify fuel levels, air intake cleanliness, and the absence of unusual noises or vibrations. Lubricants should be applied to pivot points, drive shafts, and the cutting mechanism in accordance with the manufacturer's guidelines to maintain smooth operation. If any abnormal condition is detected, the equipment should be shut down safely, cooled if necessary, and inspected further before restoration to service. Maintaining a routine of these checks helps catch problems early and reduces the risk of unexpected downtime during operation.

Periodic inspection for wear and alignment requires a more thorough assessment of critical components. Inspect belts, blades, and drive gears for cracks, fraying, or excessive play, and replace or tension as specified. Examine the cutting deck or implement mounting for signs of uneven wear or misalignment, adjusting as required to preserve performance and safety. Bearings, bushings, and pivots should be checked for smooth rotation and proper lubrication, with any roughness or binding addressed promptly. Regular alignment checks for wheels or tracks, as applicable, help prevent uneven cutting or handling issues that can escalate into more serious faults over time.

Troubleshooting readiness and record keeping create a strong diagnostic culture for the equipment. Maintain a standardized log that captures date, operating hours, observed symptoms, actions taken, and parts replaced. Before initiating any troubleshooting, verify fuel quality, air filtration, and spark or ignition integrity, depending on the model; this reduces misdiagnosis and guides the repair process. When issues arise, use manufacturer-approved procedures and safety precautions, documenting outcomes to build a reliable service history. A well-maintained record helps technicians predict wear patterns, schedule preventive maintenance, and ensure that the machine remains safe and productive in the field.

Fuel type recommendations and storage Maintaining the correct fuel type is essential for optimal operation and longevity of the engine in the CRAFTSMAN 917.374352. Use fresh unleaded gasoline with an octane rating of at least 87 unless the manufacturer specifies a different requirement. If your model is designed to handle ethanol-blended fuels, ensure the blend is appropriate for outdoor power equipment and avoid E15 or higher ethanol concentrations, which can cause fuel deterioration and component damage over time. When the unit will be stored for extended periods, add a quality fuel stabilizer to the gasoline and run the engine for a few minutes to circulate stabilized fuel through the carburetor. Drain or stabilize fuel if you anticipate storage beyond 30 days, and store the fuel in an approved container away from heat sources. Regularly inspect the storage container for cracks or leaks and replace it if signs of degradation are present. Proper storage practices reduce gum formation, varnish buildup, and fuel-related varnish that can clog jets and passages in the carburetor. Carburetor and fuel line inspection The carburetor is a critical component that delivers the correct air-fuel mixture for efficient combustion. Begin inspection by disconnecting the fuel line at the carburetor and checking for cracks, brittleness, or signs of hardening in the line. If you notice any deterioration, replace the fuel line with the correct size and type specified for the 917.374352. Inspect the carburetor body for signs of varnish or gum deposits, particularly around the idle and mixture screws, jets, and float bowl. Remove any buildup using a soft brush and carburetor cleaner, taking care not to damage delicate passages or seals. When removing the carburetor for cleaning, document the orientation and position of all screws and linkages to ensure proper reassembly. After cleaning, reattach fuel lines securely and check for leaks by briefly running the engine and observing all connections. If the engine continues to run poorly or stalls, it may indicate contaminated fuel, a stuck float, or a worn needle valve requiring further disassembly and inspection. Common symptoms and corrective actions Engine performance issues related to the fuel system can manifest in a few common ways. If the engine starts but runs irregularly or stalls under load, the carburetor may be dirty, or the idle and main jets could be blocked; perform a thorough cleaning as described earlier and verify proper fuel flow from the tank to the carburetor. If there is no fuel reaching the carburetor, inspect the fuel line for kinks, leaks, or blockages and ensure the fuel tank vent is not clogged. A hard start or no start condition may indicate degraded fuel, a clogged fuel filter, or a vacuum leak in the carburetor. Replace the fuel filter if equipped and check all gaskets and seals for signs of wear. When adjusting the carburetor, follow the manufacturer’s specified screw positions and settings, and test the engine under varying loads to confirm stable idle, smooth acceleration, and appropriate RPMs. If you encounter persistent fuel-system issues after cleaning and inspection, consider rebuilding or replacing the carburetor with OEM parts to restore proper performance and prevent recurrent failures.

Engine cooling and air management

The cooling system for the engine relies on proper airflow through critical passages and the effective operation of cooling fins and shrouds. Regular inspection of the exterior cooling surfaces ensures that debris, grass clippings, and dirt do not obstruct airflow, which can lead to overheating and reduced engine performance. When performing maintenance, remove any obstructing material with a soft brush or compressed air, being careful not to bend fins or damage the shroud. Check that the cooling fan is secure and free to rotate without rubbing against the shroud or other components. If any part of the cooling system appears damaged or excessively worn, replace it before operating the unit to maintain optimal temperature regulation and engine longevity.

Cooling system maintenance involves verifying that the radiator or cooling fins are clean and undamaged, and that hoses and clamps are intact with no signs of leaks. Inspect the coolant pathways for blockages and ensure that flow can be established freely when the engine is running. For air-cooled designs, ensure the flywheel housing and surrounding areas are clear of debris to prevent hot spots. Perform a periodic check of any thermostat or temperature control devices if present, and replace them according to the manufacturer’s service intervals. Keeping these components in good condition helps stabilize engine temperature, reduces wear, and extends service life under demanding outdoor conditions.

Air intake and filter servicing focuses on delivering clean air to the carburetor or fuel system to ensure efficient combustion and reliable starting. Inspect the air intake ducting for cracks or loose connections, and replace any damaged hoses to prevent unmetered air from entering the engine. Remove and inspect the air filter element regularly, cleaning or replacing it according to the operating environment and the OEM recommendations. When cleaning a reusable filter, use the specified filter oil and allow the element to dry completely before reinstalling to maintain proper filtration and airflow. A well-maintained air intake system improves throttle response, reduces fuel consumption, and protects the engine from dust-induced wear over time.

Overheating prevention techniques include monitoring engine temperature during operation and avoiding prolonged idle or heavy-load conditions in hot weather. Ensure the cooling system is free of obstructions and that the engine has adequate ventilation at all times. Use the recommended oil grade and maintain proper oil level, as insufficient lubrication can elevate engine temperatures and accelerate wear. Periodic checks of the cooling fan belt or drive pulley alignment are essential to prevent slippage that could reduce cooling efficiency. In high-load applications, consider brief rest periods for the engine to dissipate heat, and avoid using aftertreatment devices that could trap heat in the vicinity of the exhaust. Proper temperature management minimizes the risk of warping, gasket failures, and reduced engine performance.

The electrical system in the CRAFTSMAN 917.374352 uses a compact, integrated network designed to manage starting, charging, and safety interlocks. A thorough understanding of the battery, charging system, and wiring harnesses is essential for reliable operation and field service. Begin with a careful visual inspection of the battery terminals for corrosion, looseness, or damage, and verify that battery hold-downs are secure. When pole connections are clean and tight, measure the battery voltage with the engine off to confirm a healthy resting state, then perform a cold-start check to observe the charging system in action. Maintaining proper torque on connectors and securing all harnesses away from moving parts reduces intermittent faults caused by vibration or harness chafing. A clean, organized electrical junction layout simplifies diagnostics and minimizes the risk of miswiring during repairs. Battery care and charging involves ensuring the lead-acid battery remains within its specified voltage range and electrolyte condition. Regularly inspect the battery case for cracks or swelling, and verify that vent caps are present and unobstructed if applicable. When charging, use a charger compatible with the battery type, avoiding overcharging which can cause gas buildup and reduced battery life. During operation, monitor the alternator or charging circuit for consistent voltage typically around 13.6 to 14.8 volts, depending on the system design, and check for voltage drops under load conditions. If the battery fails to hold a charge, perform a load test and closely inspect for parasitic drains or a compromised alternator fuse. Since temperature affects battery performance, consider charging and storage practices that minimize exposure to extreme heat or cold, thereby extending service life and reliability. Wiring harness inspection and continuity tests require careful tracing of color-coded circuits and connectors throughout the mower’s electrical loom. Begin with a visual check for insulation damage, pin backs, and pin corrosion, paying special attention to weather-sealed connectors near the engine and under the chassis. Use a qualified multimeter to perform continuity checks across harness segments, ensuring each circuit reads within manufacturer-specified resistance and that there are no short circuits to ground or between circuits. When testing, de-energize all power sources and disconnect batteries to prevent arc faults during measurement. Document any damaged wires, loose splices, or degraded insulation and repair using OEM-grade harness repair kits or replace entire harness sections to restore reliable operation. After repairs, perform a functional test of the ignition circuit, safety interlocks, lights, and charging indicators to confirm proper circuit integrity and absence of stray faults. Safety overrides and fault code interpretation require understanding the mower’s diagnostic logic and its interaction with safety interlocks such as blade engagement, seat presence, and brake engagement. Read fault codes from the service port or instrument panel in accordance with the manual, noting that many codes will point to a specific module or circuit. If a fault code indicates a safety override, verify that physical interlocks actuate correctly and that wiring to sensors is intact and properly seated. Clear codes only after the underlying fault is addressed to avoid masking intermittent issues; recheck systems to ensure the fault does not reoccur. When diagnosing intermittent faults, inspect for loose grounds and high-impedance connections that can cause sporadic readings, and consider replacing aging relays or fuses that exhibit signs of arcing or corrosion. Document all fault conditions, corrective actions, and test results to build a reliable service history and prevent recurrence of the same issue.

CAUTION: Work carefully and follow all safety protocols when servicing outdoor power equipment. Proper lubrication and hydraulic system maintenance are essential for optimal performance and longevity of your machine. Use only recommended lubricants and replacement parts to avoid damage or voiding warranties. Ensure the engine is off, the ignition is disconnected, and the area around the machine is well-ventilated before beginning any maintenance procedures.

Lubrication and hydraulic systems

Recommended lubricants and fill points: The service manual specifies the use of manufacturer-approved lubricants for all moving parts, including drive belts, pivot points, and linkage joints. Use high-quality multi-purpose grease for chassis fittings and a light, synthetic oil or hydraulic fluid compatible with your system for hydraulic components. Fill points should be clean and accessible, with the fill caps labeled to prevent contamination during service. Before applying lubricant, wipe away dirt and debris to avoid introducing contaminants into the mechanism. Apply lubricants evenly, ensuring that all bearings and seals are coated but not excessively saturated, which can attract dirt or cause leakage. Always refer to the lubricants specification sheet for viscosity and grade recommendations to maintain proper film thickness and protective properties. Keep a log of lubricant types and service dates to track wear and schedule ongoing maintenance.

Hydraulic oil service intervals: Hydraulic systems require regular oil service to maintain pressure integrity and smooth operation. Establish an interval based on usage conditions, climate, and operating load, but a typical schedule includes draining, filtering, and refilling the reservoir at least once per season or after a specified number of hours of operation. When servicing, inspect the hydraulic reservoir for contaminants such as metal shavings or sediment, and replace the hydraulic filter according to the maintenance calendar. Refill to the manufacturer’s recommended level using the specified hydraulic oil type, ensuring a clean, air-free environment to prevent air pockets that could affect pump performance. After refilling, operate the system briefly to circulate the oil, then recheck the level and top up as needed. Maintain a clean work area around hydraulic components to minimize contamination and extend service intervals.

Seal and gasket inspection guidance: Inspect all seals and gaskets in hydraulic lines, fittings, and reservoirs for signs of wear, cracking, or leakage. Common indicators include dampness around joints, crusty residue, or visible oil seepage. Replace damaged seals promptly using OEM-approved parts to prevent further leakage and pressure loss. When replacing gaskets, ensure correct orientation and seating to prevent leaks and ensure proper sealing under pressure. After replacement, conduct a leak test by cycling the hydraulic system and applying a controlled load to confirm the integrity of the seals. Record replacement dates, part numbers, and observed conditions to assist with future maintenance planning. Additionally, inspect hose clamps and quick-connect fittings for tightness and integrity, replacing any corroded or damaged components to avoid sudden failures during operation.

The drive system of the CRAFTSMAN 917.374352 utilizes a drive belt and pulleys to transfer engine power to the mower blades and accessories. Proper inspection and maintenance of the belt are essential to maintain optimal cutting performance and prevent unexpected downtime. Begin with a visual inspection of the belt for signs of wear, cracks, fraying, glazing, or missing segments. Run your finger along the belt edges to detect small cracks or embedded foreign objects that could compromise traction. If any irregularities are found, replace the belt before operation to avoid part failure during use. When removing or installing the belt, ensure you route it along the correct pulleys and maintain the belt’s directional orientation as specified in the service manual. Use only the recommended OEM belt to ensure proper tension and compatibility with the pulleys and tensioner system.

Pulley alignment is critical for efficient power transfer and long belt life. Misalignment can cause premature belt wear, belt glazing, and sudden failures. Start by cleaning the pulley surfaces to remove oil, grease, or debris that could affect belt seating. Check both the drive and driven pulleys for parallelism; use a straight edge or laser alignment tool if available to confirm alignment within manufacturer tolerances. Any angular deviation or wobble should be corrected by adjusting mounting hardware or replacing worn pulleys and spacers. After alignment adjustments, recheck belt tracking with the engine at idle to verify that the belt engages evenly on all pulleys without rubbing on the outer edges or adjacent components. Document the alignment measurements for future reference and maintenance scheduling.

Proper tensioning of the drive belt is essential for performance and longevity. Too loose a belt will slip under load, reducing drive efficiency and potentially causing belt heat buildup, while an over-tensioned belt can over-stress bearings and the tensioner, leading to premature wear. Measure belt tension using the manufacturer’s specified method, which typically involves applying a defined force at a mid-span point and comparing the resulting deflection to the specification. When adjusting tension, release the tensioner if applicable and slowly apply torque until the belt deflects within tolerance. Recheck tension after the engine has run briefly to allow components to settle and re-seat. If the belt or tensioner shows signs of wear or seizure, replace them as a matched set to preserve system performance and avoid misalignment on reassembly.

Noise and vibration are common symptoms of drive system issues and can indicate belt problems, misalignment, or worn bearings. Conduct a listening inspection with the engine off to identify any metallic or abrasive sounds that accompany belt motion, then run the engine at idle with guards in place to pinpoint noise sources. If vibration is present, inspect all mounting hardware for tightness and check the drive belt for glazing, cracking, or missing teeth. A loose belt can contribute to wobble and noise, while a damaged pulley or bearing can amplify vibration. Address root causes by replacing worn components and rechecking alignment and tension after installation. Regular preventive maintenance, including belt and pulley inspections at scheduled intervals, will minimize downtime and extend the service life of the drive system.

When performing belt inspection and replacement, always follow safe procedures to prevent injury and damage to the equipment. Disconnect the spark plug or remove the battery as appropriate before accessing the belt area. Keep hands and tools clear of rotating parts during removal and installation, and use gloves to protect from sharp edges. Label and photograph belt routing before removal to ensure accurate reassembly. After completing any maintenance, perform a functional test on a dry surface, verifying smooth propulsion and absence of slipping or unusual noises before returning the unit to normal operation. Maintain a maintenance log detailing part numbers, dates, and observed wear characteristics to support future diagnostics and service actions.

In the event of persistent drive anomalies, consult the OEM service bulletin or reach out to qualified repair technicians with a detailed description of symptoms, measurements, and component condition. Collect data such as belt part numbers, pulley diameters, tension readings, and alignment measurements to facilitate efficient diagnostics. Keeping the drive system clean, lubricated only in recommended locations, and free of debris will further enhance performance and reliability. Regular proactive checks can prevent unexpected failures and extend the life of the mower’s drive components, ensuring consistent operation across seasons.

The mower deck and cutting assembly are the heart of cut quality and machine performance. Begin by ensuring the unit is on a flat, level surface and the ignition is in the off position with the spark plug wire disconnected. Remove any debris from the deck housing, blades, and around the spindle housings to prevent contamination of bearings and belts during servicing. Use a clean work area and organize tools and replacement parts before disassembly to minimize downtime. When inspecting components, look for bent or damaged blades, worn spindle bearings, and any cracks in the deck that could indicate structural failure. Proper cleaning and inspection set the foundation for reliable operation and an even, consistent cut across the entire mowing area.

The blade sharpening process should maintain balance and symmetry to prevent vibration and uneven cutting. Remove the cutting blades from the deck, noting the orientation and attachment hardware for correct reinstallation. Use a belt-driven or bench grinder with a fine grinding wheel and remove a small, even amount from each blade edge, maintaining the original bevel angle. After sharpening, inspect the blade edge for nicks and file as needed to restore a uniform edge. Recheck blade balance using a balancing device or by balancing on a nail through the center of gravity; any significant imbalance requires further removal of material or replacement. Carefully reinstall blades with the correct torque on the mounting bolts, ensuring the mowing direction arrows on the blades align with the deck design for accurate cutting.

Blade mounting and torque specifications are critical to ensure safe operation and optimal cut quality. Before installation, verify that the correct blade part number is used for each spindle position, as mismatched blades can cause excessive vibration and uneven wear. Thread the mounting bolts by hand to prevent cross-threading, then snug them according to the manufacturer’s torque specification using a calibrated torque wrench. Avoid overtightening, which can damage the blade adapter or spindle, and ensure all blades are securely fastened before starting the engine. If a bolt or nut shows signs of wear or stripping, replace the fastener and inspect the deck area for damage that could further compromise mounting integrity. Periodically recheck torque after the first several hours of operation and after any impact event, such as striking a hidden obstacle, to maintain cutting performance and safety.

Deck leveling and flotation adjustments influence cutting height consistency and scalping performance. Start by measuring deck height at multiple points across the front and rear, noting any deviation from the desired cutting height. Use the adjustment screws or linkages provided in the deck mounting system to equalize the height and ensure the deck remains parallel to the ground during operation. Recheck the mower’s front-to-rear and left-to-right height uniformity after making adjustments, making small incremental changes as needed. If the deck exhibits improper flotation, inspect the lift springs, dampers, and pivot points for wear or binding, and replace worn components to restore smooth movement. After adjustments, perform a test mow on an unobtrusive area to verify consistent blade contact with the turf and verify that there is no scalping or missing areas, indicating the deck is properly leveled and floating as designed.

The Brake, transmission, and control systems in the CRAFTSMAN 917.374352 require careful inspection and precise adjustment to maintain safe operation and reliable performance. This section details practical procedures for brake adjustment, transmission oil service and checks, and control linkage inspection and adjustment. Adhering to the recommended torque specifications and service intervals helps extend the life of the mower and reduces the risk of sudden loss of control during operation. Always disconnect the power source and follow safety procedures before performing any maintenance work on the unit.

Brake adjustment procedures

Brake adjustment begins with a thorough inspection of the brake components to identify wear, corrosion, or mechanical binding. Check the brake pedal, linkage, and actuating arms for smooth movement without excessive play. If the brake does not engage firmly when the pedal is depressed, measure the free play and compare it to the manufacturer’s specification; excessive free play indicates the need for adjustment or replacement of worn linkages or brake shoes. To adjust, loosen the mounting fasteners, reposition the brake arm or linkage to achieve the correct engagement point, and retighten to the specified torque. After adjustment, perform a functional test by engaging the brake at low and high engine speeds to confirm consistent stopping force and release action without dragging.

In systems with a mechanical brake linkage, ensure the brake return spring has adequate tension so the brake pad or shoe shoes disengage completely when the pedal is released. Inspect the cam or lever pivots for scoring or dirt buildup, which can affect leverage and braking efficiency. Lubricate pivot points with an appropriate high-temperature lubricant only where the design allows, avoiding contact with brake surfaces. If wear or damage is detected on the brake shoes, drums, or discs, replace the affected parts following the manufacturer’s service guidelines to restore proper braking performance and safety margins. Periodic brake checks should coincide with routine maintenance intervals to prevent unexpected failures in the field.

Transmission oil service and checks

Proper transmission oil level and quality are essential for smooth gear engagement and longevity of the drive system. Start by leveling the machine on a firm surface and ensuring the engine is cool before checking the oil. Remove the fill plug or dipstick as specified by the service manual, and observe the oil level against the marked range. If the oil level is low, top up with the recommended grade of transmission oil, taking care not to overfill, which can cause foaming and leakage. Use a clean funnel and wipe the fill area to prevent contamination from dust or debris entering the transmission housing. After sealing the fill plug, run the engine briefly and engage the drive to circulate the oil and verify there are no leaks from seals or gaskets.

Check the oil color and clarity; dark or gritty oil indicates contamination or wear that warrants drainage and a complete oil change. When draining old oil, observe any metallic particles or unusual debris, which can signal internal wear or damage requiring further inspection. Replace the oil filter if the design includes one, and inspect the transmission vent for blockages that could cause pressure buildup. After service, operate the drive system through the full range of speeds to ensure smooth shifting and consistent power delivery. Document service dates and oil type in the maintenance log to track intervals and support future troubleshooting.

Control linkage inspection and adjustment

Control linkage inspection starts with a visual check for loose fasteners, excessive play, or damaged rods and brackets that could affect throttle, shift, or engagement control. Move each control lever through its full range and observe the corresponding mechanism action at the transmission; any lag, binding, or misalignment should be corrected before operation. Check cable housings for cracks, kinking, or fraying, and verify that cable ends are securely anchored and properly seated in their ferrules. Replace worn cables or damaged housings to prevent control failure and maintain precise operator input response. When adjusting cables, set the proper tension to achieve crisp, predictable control without binding, ensuring that the throttle, PTO, or speed control returns to the rest position when released.

Inspect linkages for lubrication needs in areas designed to retain lubrication, using manufacturer-approved lubricant and avoiding overspray that could contaminate belts or pulleys. Verify that all adjustment slots and thread engagements are clean, properly threaded, and free of corrosion. After adjustments, perform a functional test by simulating typical operating conditions: move the engine to idle, advance to full speed, and confirm that all controls correspond accurately to their respective transmission actions. Any abnormal noise, stiffness, or delayed response should be investigated further, as it may indicate internal wear or misalignment that could compromise safety or performance. Document the inspection results and any corrective actions taken to maintain an accurate maintenance history.

Diagnostics and troubleshooting guide

When a piece of outdoor power equipment is not performing as expected, begin with a structured approach that minimizes guesswork. Start by identifying the symptom as precisely as possible, noting when the issue occurs (start-up, under load, after a period of operation, or only in certain conditions). Document any unusual noises, vibrations, or smells, and check for obvious problems such as loose components, damaged hoses, or visible wear. A calm, methodical assessment helps distinguish between a simple adjustment, a replaceable component, or a more complex electrical fault. Keep track of recent maintenance or changes to the equipment, as these can influence the troubleshooting path and may reveal a misadjustment or overlooked step. Use this collected information to guide the subsequent checks and ensure you address the root cause rather than merely treating the symptom.

Symptom based troubleshooting flow begins with quick, non-invasive checks before progressing to more involved diagnostics. Start with verifying fuel quality, air filter condition, and spark plug integrity for small engines, as these are common culprits behind poor starting or running issues. Confirm that the safety interlocks and switches are functioning correctly, as a fault in these devices can prevent normal operation without any obvious mechanical failure. If the equipment experiences intermittent operation, inspect wiring harnesses and connectors for signs of corrosion, loose terminals, or insulation damage, which can produce intermittent electrical faults. For performance drops under load, assess carburetor or fuel injection cleanliness, jet sizing, and throttle linkage adjustments, since fuel delivery problems often mimic more complex failures. Finally, perform a controlled test run with minimal load to observe engine behavior, noting RPM fluctuations, misfires, or abnormal shutdowns that will inform deeper electrical or mechanical inspections.

Electrical and mechanical fault isolation requires careful separation of possible causes into distinct domains. Use a multimeter to verify battery voltage and charging system output if applicable, and inspect the ignition system for proper coil resistance and spark strength. Grounding issues can cause unpredictable operation, so ensure all ground connections are clean, tight, and free of corrosion. Examine the electrical components in the power circuit, including fuses, relays, and switch gear, looking for signs of overheating or arcing. Mechanically, inspect drive belts, pulleys, and gears for wear, cracks, or looseness, and verify alignment and tension according to the manufacturer's specifications. Bearings, seals, and shafts should be checked for play or noise that indicates worn parts, while the cooling system or flywheel fins should be free of debris to maintain proper temperatures during operation. Conduct a methodical test sequence for each suspected fault area, recording findings to prevent rework and guide potential part replacement decisions.

When to seek professional service depends on the complexity of the fault and the safety hazards involved. If the symptom involves potential fuel system hazards, high-tension electrical circuits, or structural damage that could compromise operator safety, consider scheduling service with a qualified technician. If your diagnostic results indicate multiple failed components or non-obvious fault sources, professional service is advisable to ensure proper inspection, calibration, and adherence to warranty requirements. Similarly, if you lack the proper tools or torque specifications for fasteners, or if disassembly would risk misalignment of critical components, it is prudent to engage a service professional. Always review the manufacturer’s service bulletin and warranty terms before attempting repairs beyond routine maintenance, as improper repairs can create additional hazards or void warranties. A professional service will often include a thorough diagnostic report, performed using specialized equipment, ensuring accurate fault isolation and safe restoration of performance.

In all cases, maintain a detailed service log that documents symptom descriptions, diagnostic steps, tests performed, and parts replaced. This record not only helps track the equipment’s history but also supports future troubleshooting by providing a reference for recurring issues or patterns. When dealing with fuel-powered equipment, always follow proper safety procedures for handling flammable liquids, including working in well-ventilated areas and keeping ignition sources away. After completing any repair or adjustment, perform a functional check under controlled conditions to verify that the fault has been resolved and that performance meets the manufacturer’s specifications. Regular preventive maintenance remains the most effective defense against many common issues, so scheduling routine inspections and replacements per the manual is highly recommended to extend the life of your equipment.

In summary, a disciplined diagnostic approach, careful fault isolation, timely consideration of professional service, and meticulous documentation form the cornerstone of effective troubleshooting for the CRAFTSMAN 917.374352. Begin with symptom identification and non-invasive checks, progress through electrical and mechanical isolation with attention to safety, and determine whether professional intervention is warranted based on complexity and potential risks. Consistent maintenance and a well-kept service history will reduce downtime and help ensure reliable operation over the life of the machine.

Disassembly and reassembly best practices for the CRAFTSMAN 917.374352 begin with meticulous labeling and documentation to prevent any mismatches during reassembly. Before removing any components, photograph each assembly from multiple angles and note the orientation, fastener types, and relative positions. Use a clearly labeled parts tray or magnetic dish to group screws by location, and reseat them only into their original holes to avoid cross-threading or misalignment. Maintain a clean, well-lit work area with ample space to lay out parts in the order of removal. Keep track of any washers, spacers, or shims, as even a small misplaced item can alter belt tension, alignment, or rotor clearance. When labeling cables and hoses, use color-coded tags or matching markers to ensure correct reconnection and to preserve the integrity of the electrical and fuel systems. Document any unusual wear or damage as it may indicate a higher-priority repair that could affect safety and performance after reassembly.

Establish a deliberate order of disassembly and alignment notes to minimize risk and simplify the reassembly process. Begin with non-critical outer covers and hardware to gain access to internal components while preserving the integrity of indexing features and alignment pins. As components are removed, verify the original orientation and alignment features such as tabs, keyed shafts, or notch patterns. Use low-torque, orderly loosening to prevent stripping threads and to protect soft aluminum surfaces common in power equipment housings. When removing pulleys, blades, or linkage assemblies, keep the associated springs and tensioners in a controlled manner to avoid accidental retraction or jump-ends that could cause injury or damage. Record any measurements that could affect timing, such as pulley position or crankshaft end play, and cross-check with service data to confirm acceptable limits before proceeding. Maintain consistent torque patterns and increase torque gradually to the specified values, avoiding sudden heavy pulls that could bend components or compromise seals.

Reassembly checks and test run procedures should confirm that all components are returning to their original alignment and that no fasteners are left loose or missing. Begin by reinstalling components in reverse order of disassembly, using your documentation and photos as a guide to positioning. After initial assembly, verify belt tension, pulley alignment, and spark plug or ignition system connections if applicable, ensuring no interference with moving parts during rotation. Rotate the assembly by hand to listen for binding, unusual friction, or misalignment before applying power or starting. Recheck critical clearances such as exhaust and intake paths, cooling fins, and any vibration isolation mounts to ensure they are seated correctly and not deformed during the process. Perform a cautious test run with the covers installed to observe normal operation, listening for abnormal noises, and inspecting for leaks or fumes. If any discrepancy appears, halt the test and consult the labeling, notes, or service data to identify corrective steps before continuing to a full functional test.

Long term storage of outdoor power equipment requires careful preparation to prevent corrosion, degradation of seals, and fuel system damage. Before storing, run the engine until the fuel system is near empty, then drain remaining fuel and replace with fresh gasoline if recommended by the manufacturer. Clean all exterior surfaces to remove dirt, grass, and debris that can trap moisture and promote rust. Remove the battery if applicable and store it in a cool, dry place to extend its life, checking charge levels periodically. For tools with combustible fluids, completely drain oil and other fluids as directed by the maintenance schedule, and store containers in a secure, upright position to prevent leaks. Elevate the unit off the ground on a suitable stand or rack to improve air circulation and reduce moisture exposure, and cover the equipment with a breathable, non-abrasive cover to protect against dust while allowing moisture to escape. Regularly inspect stored units for signs of corrosion or fluid leaks, and schedule a routine check prior to the next use season to ensure performance remains reliable.

Disposal of old parts and fluids must comply with local regulations and environmental guidelines to prevent contamination of soil and water. Fluids such as fuel, oil, coolant, and hydraulic fluids should be collected in appropriate sealed containers and transported to an authorized recycling or disposal facility. Never mix incompatible fluids, and avoid venting fumes or spilling liquids during removal. When removing batteries, use proper protective equipment and follow battery recycling procedures in accordance with national and local requirements. Old filters, gaskets, and metal parts should be separated as directed by waste management guidelines and disposed of through certified facilities that handle automotive or small engine components. By documenting disposal actions and retaining receipts from the disposal facility, you help ensure traceability and compliance with environmental standards. If disposal options are uncertain, contact the manufacturer or local environmental agencies for approved options and recommended practices.

Environmental compliance requirements cover handling of fuels, oils, solvents, and emissions in accordance with applicable laws and industry best practices. Minimize spillage by using containment trays during maintenance and storing fluids in approved containers with secure lids. Dispose of used oil and filters at certified recycling centers and avoid disposing fluids in household trash or storm drains. Comply with air quality and noise regulations by performing maintenance in well-ventilated areas and using equipment that meets emission standards. Maintain up-to-date documentation on hazardous waste handling, including material safety data sheets (MSDS) or safety data sheets (SDS), to inform personnel about potential risks and required precautions. Finally, maintain a routine environmental audit checklist to verify that storage, disposal, and handling procedures align with current regulations and industry best practices, updating practices as laws evolve or new guidelines are issued.

The Appendix and reference materials provide essential quick-access data and foundational terminology to support accurate maintenance and repair of the CRAFTSMAN 917.374352. This section consolidates torque specifications, wiring schematic indexes, and a glossary of terms and abbreviations to assist technicians in the field and shop environments. By having these references readily available, technicians can reduce ambiguity, minimize assembly errors, and improve service turnaround times. The following information is organized to facilitate rapid lookup during disassembly, inspection, and reassembly tasks, ensuring that critical tolerances and electrical connections are preserved.

Torque specifications quick reference is designed to complement the service procedures with precise tightening values for fasteners encountered throughout the unit. Typical fasteners include flywheel screws, blade bolts, guard mounting hardware, and engine mounting studs. When using the quick reference, verify the correct fastener size and thread pitch, as incorrect torque can lead to stripped threads or inadequate clamping force. Always apply the recommended torque in a clean, dry condition and use a calibrated torque wrench to ensure consistency across service actions. For some components, such as blade adapters or pulleys, follow the manufacturer’s torque sequence to avoid inducing warpage or misalignment that could impact performance or safety.

Wiring schematic indexes offer a reliable map of electrical connections and circuit paths within the mower’s harness and control systems. These indexes help identify which wires correspond to ignition, safety interlocks, battery, charging circuit, and accessory circuits. When tracing a circuit, begin at a known reference point such as the ignition switch or battery terminal, and use the schematic to confirm color codes and connector arrangements. It is important to detach power sources before inspection and to document any modifications that deviate from the factory wiring. Proper interpretation of connectors, splices, and shielded cables reduces the risk of short circuits and ensures that diagnostic tests yield meaningful results. If a component is suspected of an electrical fault, cross-reference the schematic to verify expected path continuity and resistance values where provided by the documentation.

The glossary of terms and abbreviations consolidates terminology commonly encountered in manual procedures and parts catalogs. Clear understanding of terms like crankcase, carburetor, camshaft, flywheel, and governor helps ensure precise communication during troubleshooting and repair. Abbreviations such as VAC, VAC-DC, rpm, and I/O denote electrical and mechanical specifications that technicians routinely reference. This glossary also includes safety-related terms and standard industry practices to support consistent interpretation across technicians and service centers. By consulting the glossary, technicians reduce misinterpretations that could lead to improper assembly or unsafe operation, particularly when working with fuel systems or high-torque connections. Regular familiarity with these terms enhances quick comprehension of service notes and updated manuals, contributing to more efficient and accurate maintenance outcomes.