CRAFTSMAN 917.273641 Service Manual

Overview and safety information

The service manual for the CRAFTSMAN 917.273641 is designed to provide technicians with a clear framework for diagnosing, maintaining, and repairing the equipment. It consolidates specifications, procedures, and recommended maintenance intervals to help ensure reliable performance and safe operation. The manual serves as a reference for routine servicing, troubleshooting, and component replacement, enabling technicians to work efficiently while adhering to best practices. Understanding the documented procedures is essential for restoring functionality after failures and for performing preventive maintenance that extends the life of the equipment.

Safety is the foundation of any technical procedure, and this manual emphasizes protective practices to prevent injury and equipment damage. Technicians should assess the work area for hazards, such as slipping risks, sharp edges, and moving parts, before starting a task. Appropriate protective gear, including eye protection, gloves, hearing protection, and sturdy footwear, is recommended based on the operation. Following lockout/tagout procedures when removing or servicing power connections reduces the risk of accidental startup. It is also important to disconnect the spark plug boot or remove the battery as applicable to ensure the engine or electrical system cannot engage unexpectedly during maintenance.

Tooling and parts identification is presented to help technicians quickly source the correct components and tools. The manual provides part numbers, descriptive names, and compatibility notes to minimize substitution errors. A well-organized toolbox with standard hand tools, feeler gauges, torque wrenches, and specialty pullers or alignment tools may be required for precise service work. When identifying parts, cross-reference the model number and production date to confirm applicability, as revisions may alter specifications or mounting hardware. Maintaining an accurate parts inventory supports efficient repairs and reduces downtime during critical service windows.

The CRAFTSMAN 917.273641 is designed with a compact, user-friendly powertrain that emphasizes reliability and ease of maintenance. Engine and powertrain specifications focus on a dependable air-cooled single-cylinder engine paired with a belt-driven transaxle, delivering sufficient torque for typical lawn care tasks while maintaining manageable fuel consumption. The unit employs a standard 4-stroke gasoline engine with appropriately rated displacement and compression to balance performance with durability. In operation, careful attention to oil level, air filtration, and spark plug condition is essential to sustaining consistent power output and preventing premature wear. The drive system utilizes reinforced belts and pulleys that are chosen for their resilience in outdoor environments, where dust, grass clippings, and debris are common. Regular inspection of belt tension and alignment helps prevent slippage and overheating, contributing to longer service life and smoother operation.

Electrical system overview encompasses a compact electrical harness that integrates safety interlocks, charging circuits, and essential controls. The system is designed to be robust against vibration and moisture encountered in outdoor conditions. Key components include the battery (where applicable), ignition switch, fuse protection, and the safety shutoff mechanism. Proper electrical maintenance involves checking for corroded connections, inspecting insulation, and ensuring that grounds remain solid to avoid intermittent malfunctions. A well-maintained electrical system supports reliable starting, consistent ignition timing, and stable operation of auxiliary features such as lights or attachments when equipped. When diagnosing electrical issues, it is important to verify circuit continuity with a multimeter and to inspect for damaged wires or loose connectors before replacing components.

Model identifiers and serial number location are critical for accurate service, parts ordering, and warranty verification. On the 917.273641, the model plate is typically affixed to the frame near the engine compartment or beneath the operator controls, presenting a clear model number and serial number. Recording these identifiers before performing any maintenance expedites parts replacements and ensures compatibility with service literature. The serial number provides crucial information about production run and any applicable recalls, so it should be documented and cross-referenced with Manufacturer's Information Bulletins. When removing panels or accessing the engine, care should be taken not to damage the label or associated stickers, as damaged identification marks can complicate future service steps. For accurate identification, compare the observed engine code, model number, and any optional equipment indicators with the latest specification sheets from the manufacturer's repository.

Maintenance schedule and routine checks

Daily maintenance tasks involve a quick inspection of critical safety and performance components before use. Begin by checking the fuel level and ensuring the spark plug cap is securely connected, then inspect for any visible fuel leaks or loose connections around the carburetor and fuel lines. Wipe down the exterior to remove dust, mulch, or grass clippings that could interfere with cooling fins or air intake. Run a brief test of operation after the initial check to verify smooth starting, steady idle, and consistent throttle response during light acceleration. Document any unusual noises, vibrations, or smoke, and address these observations promptly to prevent more serious issues.

Weekly maintenance tasks extend the daily checks with more thorough visual inspections of belts, pulleys, and guards. Inspect the condition of the drive belt for cracks, fraying, or glazing, and replace if necessary to maintain proper drive performance. Check the blade or attachment mounting for secure fasteners, proper blade balance, and signs of wear or damage. Clean or replace the air filter as needed to ensure optimal air flow and cooling, and inspect the cooling fins for obstructions such as grass buildup. Examine the battery connections for corrosion and ensure that the terminals are tight, particularly if the machine experiences starting difficulties. Perform a functional test of safety features such as the brake, dead-man switch, and blade clutch to confirm they engage and disengage correctly.

Seasonal and preventive maintenance tasks address longer-term wear and environmental exposure. Begin by performing a thorough cleaning of the undercarriage, removing built-up grass, sap, and debris that can impede cooling and cause corrosion. Replace fuel and oil filters according to the manufacturer’s intervals, and change the oil if the unit has a user-accessible drain plug and oil fill. Inspect the exhaust system for leaks, damaged shields, or excessive play in the muffler mountings, and replace components as needed to maintain emission and noise standards. Check the spark plug for wear and proper gap specification, cleaning or replacing it if deposits are present. Finally, inspect the overall condition of hydraulic, electrical, and control systems, tightening fasteners and addressing any loose or damaged parts to prevent unexpected downtime during peak usage seasons. Maintain a documented log of all service actions, including parts replaced and dates, to facilitate future maintenance planning and resale value.

The fuel system and carburetion of a power equipment unit are critical for reliable starting, smooth operation, and optimal performance. This section covers practical, field-tested procedures for inspecting the fuel valve and lines, adjusting and tuning the carburetor, and replacing the fuel filter. A thorough check of each component helps prevent performance problems such as hard starting, poor acceleration, or engine hesitation. Always ensure the engine is cool before performing any fuel system work to avoid accidental fuel contact or burns. Use clean, approved containers for any fuel handling and dispose of old fuel in accordance with local regulations.

Fuel valve and lines inspection

The fuel valve should operate smoothly, with no hard turns, leaks, or signs of seepage around the valve body. Inspect the vacuum line connections as well, looking for cracks, stiffening, or loosened clamps. If you observe any leakage, replace the valve or damaged hoses immediately and reseal all fittings using the appropriate thread sealant approved for high-pressure fuel lines. When inspecting lines, look for signs of pinching, kinking, or abrasion that could restrict fuel flow; replace damaged sections and secure lines away from hot surfaces or moving parts to prevent heat deformation or abrasion. After reassembly, perform a careful test by cranking the engine with the fuel valve in the ON position to ensure stable fuel flow without leaks or pressure loss. If the unit sits unused for extended periods, drain fuel from lines to prevent varnish formation and fuel gum that can clog the carburetor jets and needle seats.

Carburetor adjustment and tuning

Carburetor tuning begins with a clean air filter and a thoroughly cleaned carburetor, free of varnish and debris. Start with the manufacturer’s baseline settings for idle speed, high-speed mixture, and idle mixture, then adjust in small increments while carefully observing engine response. Set the idle speed to a smooth, steady idle with no stalling, and confirm that the fast idle cam releases correctly once the choke is opened. When tuning for cold starts, verify that the choke closes fully and the engine responds promptly to throttle input; after warm-up, gradually lean the mixture to achieve crisp acceleration without coughing or backfiring. If you experience hesitation at mid-range or high RPM, slightly richen the high-speed jet adjustment, then test under load to confirm that power delivery remains steady. Always replace gaskets if you split the carburetor during adjustment and ensure that screws are seated securely to avoid air leaks that could undermine tuning accuracy.

Fuel filter replacement

Replacing the fuel filter is a straightforward maintenance task that protects the carburetor from varnish and sediment. Start by locating the fuel filter in the fuel line and turning off the fuel supply to prevent spills. Use protective gloves and have a catch basin ready for any incidental fuel leakage. Remove the old filter, paying attention to the directional flow markings so the new filter is installed in the correct orientation. Inspect the filter housing for cracks or damage and replace the housing if necessary. Install the new filter snugly but avoid overtightening clamps; once installed, reconnect the fuel line and perform a brief functional test to confirm there are no leaks and that fuel flows freely through the system. Finally, run the engine at low and high speeds to ensure the new filter does not introduce any restrictions or air pockets, addressing any symptoms of starvation promptly with additional checks of line connections and filter seating.

Air intake and cooling system

The air intake system on the CRAFTSMAN 917.273641 is essential for maintaining proper engine performance and longevity. Regular inspection of the air filter and surrounding housing ensures unrestricted airflow and prevents dust and debris from entering the intake manifold. Start by locating the air filter cover, removing it carefully, and inspecting the filter element for staining, tears, or clogging. A clean, dry filter is the first line of defense against worn cylinders, reduced power, and increased fuel consumption. When dirt or grit is visible, replace the filter with the manufacturer-recommended part or thoroughly clean if the design permits, ensuring the gasket seating surface remains free of old adhesive or debris. After servicing, reseal the housing securely to prevent unfiltered air from bypassing the filter.

Inspection of the radiator and cooling shroud is critical to prevent overheating, which can lead to degraded performance and component damage. Begin by locating the radiator fins and the cooling shroud assembly, then visually inspect for bent fins, corrosion, or leaks in the coolant lines. Remove any debris such as leaves or grass that has accumulated on the radiator surface, using a soft brush or compressed air from a safe distance to avoid bending the fins. Check that the radiator cap seals properly and that the coolant level is within the recommended range. If you notice signs of coolant loss, a suspected leak, or a drop in cooling efficiency, perform a pressure test or consult the service manual for the correct procedure and replacement parts. Maintain a clean cooling path around the engine to ensure efficient heat transfer and steady operation in hot or heavy-load conditions.

Quiet operation and effective heat management depend on minimizing air resistance and ensuring components operate within their designed tolerances. Start by inspecting the cooling shroud for cracks or distortions that could alter airflow patterns. Ensure all fasteners are tight and that the shroud is correctly aligned with the radiator and fan. The fan should rotate freely without rubbing against the shroud or other components; if you hear unusual noises or see excessive vibration, inspect the pulley, belt tension, and mounting brackets for wear or looseness. Consider upgrading to a low-noise fan if available, and verify that anti-noise or vibration-damping mounts are intact. Regular maintenance of the air intake and cooling system not only lowers noise but also extends engine life by maintaining optimal operating temperatures during continuous use or demanding workloads.

Oil specifications and change intervals

For the CRAFTSMAN 917.273641, use the oil type specified by the manufacturer to ensure proper lubrication without sludging or varnish buildup. Check the owner's manual or label on the engine for the exact viscosity rating, typically a multi-grade SAE 30 or equivalent for typical outdoor power equipment in moderate climates. Maintain a regular oil change interval based on usage and operating conditions; heavier workload, frequent dust exposure, or operation in hot environments will shorten the interval. When changing oil, run the engine to warm it up, then drain the old oil completely from the sump, replace the filter if equipped, and refill to the manufacturer’s prescribed capacity. Dispose of used oil in accordance with local regulations, and record the date of the change to establish a reliable maintenance history.

Greasing points and intervals

Identify all grease fittings and lubricated joints on the drive system, steering linkage, and deck drivetrain, and apply a high-quality automotive or lithium-based grease that meets the equipment’s compatibility standards. Clean any dirt or debris from grease fittings before applying lubricant to prevent contamination. Apply grease at recommended intervals, which may be after a certain number of operating hours or after exposure to wet or sandy conditions, ensuring a light but thorough coating that does not attract excessive dust. Periodic inspection should accompany greasing to detect wear, misalignment, or loosened fasteners, and any degraded seals should be replaced promptly to prevent grease leakage and component damage.

Drive belt inspection and replacement

Inspect the drive belt for signs of wear, cracking, fraying, glazing, or missing ribs, and check belt tension according to the manufacturer’s guidance. A belt that shows any of these conditions should be replaced to maintain correct drive performance and prevent slippage. When removing and replacing the belt, follow the proper routing path and ensure that pulleys and idlers are clean and free of debris that could cause misalignment or accelerated wear. After installation, recheck belt tension and alignment, and perform a test run to confirm smooth engagement and operation without unusual noises. Regular inspection of the belt during routine maintenance is essential, as a failing belt can cause loss of drive control, uneven blade performance, and potential safety hazards.

Battery health and charging systems are critical to reliable starting and overall mower performance. Begin by inspecting the battery for signs of wear, including swelling, corrosion on terminals, and visible damage to the case. Use a quality multimeter to measure the resting voltage; a healthy 12-volt lead-acid battery typically reads around 12.6 to 12.8 volts when fully charged. If the voltage is consistently below 12.4 volts, recharge the battery using a compatible charger and re-test after a stabilization period to determine if the battery holds a charge. During charging and testing, ensure all connections are clean, tight, and free of oxidation; corrosion can impede current flow and mimic more serious electrical faults. For deeper diagnosis, perform a load test to simulate start-up conditions and confirm the battery can sustain the necessary current without significant voltage drop. If the battery fails to maintain its charge after proper charging and cleaning, replacement with an OEM or equivalent reference may be required to restore reliable operation.

Starter and ignition system checks require careful inspection of both mechanical and electrical components. Begin by removing the engine cover and accessing the starter motor, solenoid, and associated wiring in a well-ventilated area. Verify that the starter motor engages fully when the key switch or start button is actuated, listening for the characteristic whine or click that indicates solenoid operation. Inspect the ignition switch circuit for continuity and correct resistance values at key off and key on positions, using the service manual’s specified range as the benchmark. Examine the start relay/solenoid connections for signs of heat damage or loose terminals, which can create intermittent starts or failure to engage. When diagnosing, disconnect the spark plug to prevent accidental engine start and perform a controlled bench test of the starter by bridging the battery through the solenoid to observe proper engagement and rotation. Any abnormal grinding noises, slow engagement, or incomplete cranking typically points to a failing solenoid, worn brushes, or a damaged starter drive assembly that should be replaced to maintain reliable operation.

Common wiring faults and diagnostics encompass a range of issues from corroded connectors to damaged harness insulation. Begin with a visual inspection of all harness runs for cracked insulation, pinching, or routing that could cause chafing against sharp edges or moving components. Use a circuit diagram from the service manual to trace power and ground paths, verifying continuity with a multimeter and checking for unexpected resistance that could indicate a weak connection. Corrosion on battery terminals and blade connectors is a frequent cause of intermittent electrical faults; clean with a proper contact cleaner and re-torque to the manufacturer’s specification. Inspect fusible links and inline fuses for signs of melting or discoloration; a blown fuse often protects more critical circuits but can also reveal an underlying short condition. If a fault is intermittent, employ a process of elimination by disconnecting non-essential circuits to isolate the suspect wiring, then reintroduce circuits one at a time while testing for proper operation. In cases of complex wiring faults, replace damaged harness sections with OEM wiring to ensure correct gauge, routing, and safety margins are preserved, preventing future failures and maintaining overall reliability of the electrical system.

The engine mounting and supports for the CRAFTSMAN 917.273641 require careful handling to preserve alignment and reduce the risk of damage during removal and installation. Begin by disconnecting the spark plug wire boot and ensuring the ignition switch is in the off position, then remove the battery cables if accessible to prevent accidental cranking. Support the mower deck or chassis with suitable stands or blocks to maintain stability as you access mounting points. Remove any shields or covers that obstruct access to the engine mounting bolts, noting their locations for reinstallation. When lifting the engine, use a hoist or appropriate lifting strap rated for the engine’s weight, and keep clear of belts, pulleys, and wiring harnesses to prevent snags or electrical shorts. After the engine is free, inspect the mounting brackets for wear or deformation and replace any compromised components before proceeding with removal to avoid misalignment during reassembly.

Disassembly of the exhaust system must be performed with attention to the exhaust flange connections, gasket integrity, and any preheater or muffler components that influence backpressure. Begin by locating the exhaust clamps or bolts that secure the manifold to the cylinder head, and carefully loosen them in a crisscross pattern to relieve stress evenly. If gaskets are recessed or fit tightly, apply penetrating oil and allow time for it to work before final removal to minimize the risk of snapping bolts. As you separate the exhaust components, support the pipe to prevent bending or stressing the flange surfaces, which can lead to leaks once reassembled. Clean the mating surfaces of the exhaust port, replace worn gaskets, and inspect the exhaust heat shields for damage or corrosion. When reassembling, torque fasteners to the manufacturer’s specifications in the correct sequence and verify there are no clearance issues with surrounding components such as the carburetor, air intake, and starter wiring.

Reinstallation alignment and commissioning require precise attention to bring the engine back to optimal operating condition. Begin by establishing a reference plane on the engine cradle and ensuring all mounting holes align with the chassis or engine mount brackets before any bolts are snugged. Start with the rear mounting points to set the engine position, then gradually install the front mounts, keeping the engine level and aligned with the drive belt and pulley system. Reconnect all electrical connectors, fuel lines, and the carburetor linkage, verifying that there are no kinks or pinch points that could impair operation. After installation, carefully reinstall the exhaust system following the torque specifications and verify that all clamps are tight and there is no exhaust leakage. Finally, perform a thorough pre-start inspection, including checking oil levels, securing the ignition wire, and confirming belt tension, followed by a controlled start and a short run to ensure the engine maintains proper RPM, shows no abnormal vibrations, and reaches normal operating temperature without leaks.

Hydraulic and lawn care attachments

Attachment compatibility and mounting procedures require careful verification of model numbers, hydraulic specifications, and mounting points. Begin by identifying the specific implements intended for use with the CSC, ensuring that the quick-connect couplers, PTO shaft compatibility, and hydraulic flow requirements match the equipment’s rated capacity. Before installation, disconnect the battery and depressurize the hydraulic system to prevent sudden fluid release. When mounting, align mounting holes precisely and hand-thread fasteners before torquing to the manufacturer’s specification to avoid cross-threading. Use the recommended mounting brackets and adapters only, and verify that the attachment’s weight distribution does not exceed the front or rear axle limits as indicated in the service data. After securing the attachment, perform a functional check at no-load conditions to confirm proper engagement of power transfer and hydraulic control, listening for unusual sounds or leaks that could indicate misalignment or damaged components.

Hydraulic hose inspection and safety demands a thorough examination of all hoses and fittings for wear, cracks, or deformation. Inspect hoses for signs of external abrasion, kinking, or swelling, and replace any that show evidence of weakness. Ensure all hydraulic connections are tight, clean, and free from oil residue that could indicate a leak. Regularly check both ends of each hose for secure fitting retention, and confirm that ferrule clamps are present where required. When routing hoses, avoid sharp edges, hot surfaces, and moving parts; use protective sleeves or guards to minimize wear. Always relieve system pressure before disconnecting hoses, and use compatible hydraulic fluid as specified by the manufacturer to maintain performance and prevent internal damage. Store spare hoses in a cool, dry area away from direct sunlight to prolong their service life and reduce the risk of degradation.

Deck and blade maintenance focuses on maintaining a level, sharp, and balanced cutting platform to ensure optimal mowing performance and safety. Inspect the deck surface for cracks, corrosion, or warping, and remove any debris that could obstruct blade movement or airflow. Check the blade spindle, knife, and mounting hardware for wear, looseness, or damage; replace worn components with OEM parts to preserve balance and efficiency. Balance the blades to ensure even cutting and vibration control, and perform a spindle bearing check for smooth operation without roughness or play. Clean the underside of the deck and remove any built-up grass buildup, which can impede airflow and reduce discharge efficiency. Finally, verify that the blade height adjustment mechanisms operate smoothly and accurately, and recalibrate the cutting height as needed following any maintenance or part replacement to maintain consistent performance across the full range of cut settings.

Diagnostics and fault codes

Interpreting symptom based checks begins with careful observation of how the equipment behaves under normal and abnormal operating conditions. Start by noting any unusual noises, vibrations, or changes in performance such as reduced cutting efficiency, uneven spool behavior, or erratic engine speed. Document the exact symptoms, the operating conditions when they occur, and any recent maintenance actions. This structured approach helps isolate whether the issue is fuel, ignition, mechanical binding, or electrical in nature. Use visual inspections to identify obvious problems like loose harnesses, damaged cables, missing fasteners, or signs of wear on belts and pulleys. A methodical symptom analysis avoids unnecessary part replacements and speeds up the diagnostic process by narrowing the potential causes to the most likely culprits.

Common service codes and resolutions rely on a consistent fault code language that corresponds to specific subsystems. Start by checking any diagnostic indicators on the control panel, such as LED sequences or display codes, and compare them to the manufacturer’s fault code chart. When a code points to the ignition system, verify spark plug condition, coil connectivity, and fuel delivery as the primary suspects before replacing components. If a code implicates the fuel system, inspect fuel filter condition, fuel line integrity, and carburetor or fuel injection performance, ensuring there are no air leaks or clogs. For electrical or sensor related codes, examine the wiring harness continuity, grounds, and sensor calibration, using a multimeter to verify resistance and voltage where appropriate. Remember that some codes may be intermittent; repeating the test after a cool-down period or post-reset can help determine if a fault is persistent or transient.

When to replace components rather than repair requires weighing reliability, cost, and safety considerations. If a part shows signs of material fatigue, excessive wear, or damage that cannot be restored to spec, replacement is the prudent choice to restore dependable operation. Components with repeated failures or those that compromise safety—such as electronic control units, ignition modules, or primary drive belts—should be replaced rather than repaired to prevent cascading failures. In some cases, a repair may be feasible and cost-effective, such as rebuilding a carburetor or re-coating a worn bearing, provided that the repair restores original tolerances and is performed with genuine parts. Always verify that replacement parts meet or exceed the OEM specifications and are installed following the manufacturer’s torque and alignment procedures to maintain safety and performance.

Calibration and performance tuning

Calibration and performance tuning are essential for maintaining optimal operation, fuel efficiency, and safety of the power equipment. Proper idle and speed settings ensure reliable starts, smooth operation at low RPM, and consistent power delivery across varying load conditions. When performing adjustments, use calibrated tools and refer to the manufacturer’s torque specifications to avoid overtightening or loosening critical components. Begin by verifying the overall condition of the engine, muffler, air filter, and exhaust system, as any restriction or damage can affect calibration results. Document all readings and adjustments to establish a repeatable baseline for future maintenance cycles.

The idle and speed setting procedure involves locating the appropriate adjustment screws or electronic parameters, depending on the model configuration. Carefully disconnect any sensors or electrical connections only if the service manual directs it, and keep track of all removed fasteners. Start the engine and allow it to reach operating temperature before making incremental adjustments. Adjust the idle speed first to achieve a stable, low-rev operation without stalling, then fine-tune the high-speed setting to maintain smooth acceleration and consistent top-end performance under load. After each adjustment, perform a brief load test to confirm that the engine maintains speed with and without a light load, ensuring there is no surging or stalling at typical operating conditions.

Rich lean mixture adjustments affect combustion efficiency, fuel economy, and exhaust emissions. To evaluate fuel-air mixture, connect any diagnostic equipment specified by the manufacturer and observe live data such as idle mixture, mid-range response, and full-throttle indications. When adjusting, make small incremental changes and allow the engine to settle before taking readings. A richer mixture can improve starting and cold-weather responsiveness but may produce higher exhaust temperatures and increased fuel consumption, while a leaner setting can reduce fuel use but risk overheating or detonation under heavy load. It is crucial to verify spark plug color and piston health after adjustments, as abnormal deposits or signs of detonation can indicate an overly lean or rich condition that requires re-tuning and potential component inspection.

Regular safety interlocks verification is an integral part of maintaining reliable performance. Inspect and test all operator presence controls, such as blade engagement interlocks, throttle interlocks, and kill switches, ensuring they function correctly in all expected positions. A failure in any interlock can present serious safety risks, including unintended engine operation or inability to stop the machine promptly. Perform a functional test by powering the unit in a controlled environment, confirming that the engine shuts down immediately when interlock conditions are released or the operator handle is disengaged. Replace any faulty switch, wiring harness, or control module and re-check continuity and resistance values according to the service specification to guarantee long-term reliability and safe operation under typical field conditions.

Storage, transport, and end of life care

Proper storage and maintenance of outdoor power equipment extend product life, preserve performance, and prevent accidents. Before storing, ensure the unit is clean and dry, removing any dirt, grass clippings, and oil residues that can corrode components over time. Inspect the fuel system and replace old fuel with fresh, stabilized gasoline if storing for more than 30 days. For extended storage, consider running the engine briefly after adding a fuel stabilizer to ensure treated fuel circulates through the carburetor, or use a fuel stabilizer according to the manufacturer’s recommended mix. Always disconnect the spark plug and ground the spark plug wire to prevent accidental starting during storage so that no fumes or heat can accumulate in a closed space.

Winterization should address the unique conditions of cold climates. Drain or stabilize fuel, lubricate moving parts, and drain the carburetor and fuel lines if recommended by the OEM to prevent varnish buildup and gum formation. Remove any moisture-prone hoses or openings and seal air intakes to deter pests and moisture ingress. Store in a dry, well-ventilated area away from direct sunlight and extreme temperatures. Regularly inspect the storage environment for signs of moisture intrusion, pests, or corrosion, and adjust humidity controls if your storage space is climate controlled. A clear label with the storage date and service actions performed helps trace maintenance history at a glance.

Transport securing guidelines are essential to prevent damage and ensure safe handling. When loading and unloading, keep the unit upright and secure it using strap anchors or brackets designed for outdoor equipment to prevent shifting during transit. If the machine has removable components, detach and store them separately in labeled bags to avoid loss and damage. Cover the equipment with a breathable protective cover to shield it from dust, moisture, and debris, while allowing any remaining moisture to escape. Before transport, inspect tires, wheels, and handles for wear, and verify that the engine is in a safe position, with fuel capped and tools secured to eliminate spill risks. Never place heavy loads on top of the unit or transport with the spark plug connected, as unintended startup or electrical shorts could occur during transit.

Disposal and recycling recommendations emphasize environmentally responsible practices. Follow local regulations for disposing of old fuel, batteries, and oil, and recycle those fluids at approved collection centers. Discarded or degraded filters, gaskets, and seals should be placed in appropriate waste streams or recycling programs to minimize environmental impact. If the equipment is no longer repairable, consult the manufacturer’s guidance on approved disposal methods and consider donating or reselling still-functional units to reduce waste. For any hazardous materials encountered during end-of-life care, wear protective equipment such as gloves and eye protection, and ensure spills are contained promptly using absorbent materials. Maintaining a record of disposal actions helps support compliance with environmental and safety standards and provides accountability for future service needs.

The Appendix and reference materials provide critical details that support safe and effective servicing of the CRAFTSMAN 917.273641. When working with torque specifications, it is essential to apply the exact values recommended by the manufacturer to ensure fasteners retain proper clamping force without over-stressing components. Always verify the exact model’s torque data before reassembly, and use calibrated torque wrenches to achieve consistent results. Record any deviations observed during servicing and address them with the appropriate fastener replacements or hardware upgrades to maintain machine safety and performance. A systematic approach to torque data reduces the risk of reduced compression, component wear, or mechanical failure during operation.

The wiring diagram quick reference serves as a crucial map for diagnosing electrical issues, routing harnesses, and verifying circuit continuity. When following diagrams, begin by identifying power sources, grounds, and safety interlocks to trace circuits accurately without introducing faults. Use a multimeter to confirm voltage levels, resistance, and continuity, and label connectors before disconnecting them to simplify reassembly. Pay attention to color codes and insulation integrity, replacing any damaged wires with the same gauge and rating to preserve electrical safety. Keeping the wiring neat and properly bundled minimizes wear from vibration and reduces the likelihood of short circuits during future use.

The parts diagrams and exploded views are invaluable for understanding the assembly sequence and identifying the exact components in each subsystem. Carefully study the exploded views to determine the order of disassembly and the correct orientation of parts during reassembly. Maintain an inventory check as you remove components, noting any wear or damage that would require replacement. Use the diagrams to verify fastener types, lengths, and placements, ensuring that gaskets, seals, and shims are properly seated to prevent leaks or misalignment. Cross-reference part numbers with the service manual to ensure you are ordering compatible components, and keep a labeled repository of diagrams for quick reference during future maintenance or repairs.