CRAFTSMAN 917.252610 Service Manual

Overview

The CRAFTSMAN 917.252610 is a compact mid‑range outdoor power equipment platform designed for residential lawn maintenance. This manual provides practical guidance for diagnosing, servicing, and maintaining the engine, transmission, and cutting components specific to this model. It assumes a baseline level of mechanical aptitude and access to standard shop tools, safety gear, and a clean workspace. Compatibility considerations focus on the engine family, carburetion layout, and ancillary parts that may vary by production run, requiring careful verification of OEM parts lists before replacement. This section lays the groundwork for safe and effective service by outlining the intended equipment scope and the general repair philosophy used throughout the document.

Safety and compliance considerations are foundational to every procedure described. Personnel should always wear eye protection, hearing protection, and cut-resistant gloves when performing inspections or maintenance that involves rotating assemblies, sharp blades, or pressurized systems. Disconnect power sources and remove spark plugs or disconnect stored energy sources when performing inspections that could cause unexpected engine cranking or movement of mechanical parts. The manual emphasizes adherence to local environmental regulations for oil, fuel, and refrigerant handling, as well as proper disposal practices for worn components. Compliance also includes following manufacturer torque specifications, using OEM fasteners where applicable, and documenting service work to maintain traceability and warranty eligibility. A disciplined approach to safety reduces the risk of injury and ensures that the equipment remains reliable and compliant with applicable standards.

The CRAFTSMAN 917.252610 is a compact yet capable lawn tractor designed for residential use, featuring a robust frame and a user-friendly control layout. When performing maintenance or inspection, begin by verifying model and serial numbers to ensure compatibility with replacement parts and service procedures. Confirming these identifiers helps prevent using incorrect components, which can compromise performance or safety. Maintain a dedicated log of the machine’s identifiers alongside service dates to track wear, part replacements, and lubrication intervals over time. Proper verification also assists in obtaining the correct documentation and recalls from the manufacturer if needed.

Key specifications for the 917.252610 include engine displacement, horsepower, transmission type, and fuel system details, all of which influence maintenance intervals and permissible operating conditions. The engine is typically a single-cylinder, air-cooled design with specific torque and RPM ranges that dictate appropriate lubrication and cooling practices. The transmission arrangement, whether hydrostatic or gear-driven, determines the recommended service procedures for drive belts, pulleys, and linkage. Fuel type and capacity, along with oil grade and capacity, set the baseline for routine checks that affect performance and longevity. Always refer to the official specification sheet for the exact numbers relevant to your unit’s build date and regional variant.

In addition to the core specifications, other capacities such as fuel tank size, oil capacity for the engine, and recommended coolant or air-filter service intervals play a critical role in planning preventive maintenance. Keeping accurate records of these capacities helps ensure the correct quantities are used during top-offs and changes, reducing the risk of overfilling or under-gassing the system. It is prudent to verify accessory capacities like the battery, spark plug gap, and air-cleaner element sizes since these components directly impact starting reliability and engine efficiency. Understanding these specifications empowers you to perform accurate diagnostics and to source compatible replacement parts without unnecessary delays.

Operational limits, including maximum load, cut width, and safe operating RPM, define the boundaries within which maintenance tasks should be conducted to avoid premature wear. Adhering to these limits helps protect the engine, drive system, and mowing deck from undue stress. Regular inspection of fasteners, belts, and mounting points in light of the stated capacities ensures structural integrity during operation. By aligning your maintenance plan with the model’s verified specifications, you can optimize performance, extend service intervals, and maintain the machine in a safe, reliable condition for everyday lawn care tasks.

Initial inspection and preparation begins with ensuring the engine is safe to service and that all power sources are isolated. Begin by disconnecting the spark plug boot to prevent accidental cranking, and remove the battery if the unit is equipped with one. Visually inspect the exterior for signs of damage, oil leaks, or loose hardware that could indicate prior improper maintenance. Gather the required tools and reference the model number 917.252610 to verify compatibility of any replacement parts. Record the symptom description and current operating conditions, including whether the issue occurs under load or at idle, to guide subsequent diagnostic steps. Establish a clean, well-lit workspace and use a magnetic tray for fasteners to prevent loss during disassembly.

Proceed to perform a cautious preliminary check of fuel quality, air intake, and exhaust restrictions, as these are common culprits in performance problems. Drain the fuel system if prolonged storage or stale fuel is suspected, and replace with fresh approved fuel and oil mixtures per manufacturer recommendations. Inspect the air filter for clogging or damage and replace if necessary, ensuring the air intake paths are clear. Inspect the carburetor linkage, choke, and throttle for smooth operation and correct idle speed, adjusting only within the manufacturer’s specified tolerances. Examine the spark plug condition and gap, replacing it if fouled or worn to maintain proper ignition. Finally, verify the cooling fins and shrouds are free of debris to prevent overheating during operation.

Diagnosing common issues involves correlating observed symptoms with probable causes and validating through controlled tests. If the engine starts but lacks power, inspect the fuel supply, carburetion, and exhaust flow, checking for vacuum leaks and air intake restrictions. For hard starting, evaluate the spark quality, fuel delivery, and pilot circuit performance, testing with a known-good spark plug and verified fuel line pressure. If the engine runs roughly or misfires, check for ignition timing anomalies, loose or damaged ignition lead connections, and cylinder compression differences that may indicate worn rings or seated valves. If the equipment stalls under load, assess the air filter condition, carburetor settings, and muffler restrictions, ensuring there is no significant obstruction in the exhaust path. Maintain a methodical approach by documenting each test result and cross-referencing with expected performance curves from the service manual.

During diagnostics, use safe disassembly practices to avoid contamination and damage to sensitive components. Keep track of fastener sizes and torque specifications, using the correct tools to prevent thread damage. When removing covers and assemblies, inspect seals and gaskets for wear and replace as needed to prevent future leaks. Reassemble in the reverse order of disassembly, rechecking all connections, hoses, and electrical harnesses for proper seating and secure retention. After reassembly, perform a cautious start-up sequence, observe for abnormal noises, leaks, or misfires, and confirm that all safety interlocks and kill switches are functioning correctly. Finally, document the final condition and any parts replaced, providing clear notes for the user on maintenance intervals and recommended service intervals.

Engine overview: The engine in the CRAFTSMAN 917.252610 is designed to deliver reliable power while maintaining efficiency and low emissions for typical yard and light-duty applications. Before performing any service, ensure the unit is on a flat, stable surface with the spark plug wire disconnected to prevent accidental cranking. Inspect the air intake, fuel lines, and exhaust system for signs of wear, cracks, or leaks, and verify that all guards and shields are securely in place. Pay close attention to the carburetor, muffler, and cooling fins, as dirt buildup and heat exposure can affect performance and longevity. When removing components for inspection, label fasteners and reassemble in the reverse order to preserve proper fit and function. Regular checks of oil level and cooling passages help prevent overheating and reduce wear on internal components.

Fuel system inspection and maintenance: Start with a visual check of the fuel tank, fuel lines, and vacuum lines for cracks, swelling, or signs of leakage. Replace any damaged hoses with OEM-recommended parts to ensure proper fuel delivery and to avoid air leaks that can cause the engine to run lean or stall. If the engine exhibits hard starting, rough idle, or unexpected stalls, inspect the fuel filter and carburetor for clogging or varnish buildup; cleaning or professional overhaul may be required. When working with gasoline, use eye protection and conduct work in a well-ventilated area, away from ignition sources. After maintenance, prime the system according to the manufacturer’s guidelines and test-run the engine at a low throttle to confirm smooth operation and stable idle. Consider replacing the fuel filter at recommended intervals to maintain clean fuel flow and prevent particulate matter from entering the carburetor.

Engine cooling and lubrication systems: This engine relies on proper cooling to maintain performance and prevent overheating during extended operation. Check the cooling fins, shroud, and air intake for obstructions such as grass clippings, dust, or debris, and remove them with a soft brush or compressed air as permitted by the equipment manual. Ensure the recoil or electric starter cooling fan is unobstructed and spins freely to maintain air movement across the cooling surfaces. For lubrication, verify that the engine oil is at the correct level and use the recommended viscosity for the operating conditions. Change the oil at intervals specified by the service manual and replace the oil filter if equipped, using OEM parts to ensure compatibility and performance. Regularly inspect the exhaust system for carbon buildup and secure mounting hardware to prevent exhaust leaks, which can affect engine efficiency and noise levels.

The electrical system in the CRAFTSMAN 917.252610 combines a compact power distribution network with safety interlocks and a charging circuit designed to maintain optimal battery voltage under typical operating loads. Understanding the layout helps technicians quickly diagnose symptoms such as poor starting performance, inconsistent charging, or intermittent electrical faults. Start with a visual inspection of all accessible wiring routes, connectors, and grounds for signs of wear, corrosion, or loose fittings. Pay particular attention to harness shielding, weatherproof connectors, and any aftermarket modifications that could alter circuit behavior. Having the correct schematic on hand, verify that terminal connections are clean, tight, and free of oxidation before proceeding with resistance checks or component testing. A systematic approach minimizes unnecessary disassembly and reduces the risk of introducing new faults during diagnostic steps.

The battery and charging system in this model relies on a robust 12-volt lead-acid battery and a compact alternator or charging coil that maintains voltage during engine operation. Check the battery state-of-charge using a reliable multimeter, ensuring open-circuit voltage aligns with manufacturer specifications and that there is no excessive parasitic drain when the engine is off. Inspect the charging system for proper voltage at idle and under load to confirm that the alternator or charging coil is supplying adequate current without overcharging. Examine the battery terminals for tightness and cleanliness, as corroded or loose connections can masquerade as charging faults. When testing, verify that the charging indicator lights or gauges respond correctly to engine start and that the electrical system maintains stable voltage without excessive ripple. If the system fails to meet these criteria, isolate the problem to the source—battery, alternator, or wiring harness—before replacing components to avoid cascading failures.

Wiring harness inspection and troubleshooting require a careful, methodical approach to identify intermittent or hidden faults. Start by tracing major harnesses from the ignition switch, safety interlocks, and control modules to their respective devices, checking for damaged insulation, pin displacement, or pin corrosion at each connector. Use a multimeter to verify continuity on each circuit, paying attention to expected resistance or voltage drop when under load. Inspect grounds comprehensively; a weak or corroded ground can cause wide-ranging electrical symptoms even if the main power path appears intact. When you encounter a suspected fault, perform a temporary bypass only with caution and within safety guidelines to confirm the circuit behavior, then restore the original wiring to maintain system integrity. Document all findings with clear notes and, if necessary, photograph connector pin configurations to ensure accurate reassembly. Regular maintenance of the harnesses—cleaning, securing, and protecting exposed routes from heat, vibration, and moisture—will extend reliability and reduce diagnostic time during future service events.

Starting And Charging Systems

The starting system of the CRAFTSMAN 917.252610 is designed to deliver reliable cranking performance under varying conditions. Begin by inspecting the battery condition, terminals, and cables for corrosion, looseness, or damage, as poor connections can impede starting. Use a digital multimeter to verify the battery voltage is within the manufacturer’s specified range, and perform a load test to confirm adequate cold-cranking amperage. When the battery and cables check out, examine the starter motor connections for signs of wear or overheating, and ensure the starter relay and safety interlocks are functioning properly. Any abnormal noises during cranking, such as grinding or excessive slower rotation, should prompt a full diagnosis of the starter drive, among other components, to prevent further damage.

Ignition system diagnostics for this model require careful testing of the ignition coil, spark plug condition, and associated wiring. Begin by removing and inspecting the spark plug for fouling, wear, or moisture, and replace it if gaps or heavy deposits are observed. Verify the spark plug wire resistance and continuity with a digital ohmmeter, and confirm a strong, consistent spark at the correct gap during a manual crank test. If ignition timing is adjustable, use the manufacturer’s specifications to confirm proper timing, and inspect the flywheel key for shearing, which can cause misfiring or lack of starting torque. Check for any signs of ignition module overheating or fault codes transmitted through diagnostic indicators on the engine control system, if equipped, and address moisture ingress or wiring abrasion that could compromise signal integrity.

In addition to these checks, cooling and electrical circuit planning play a critical role in starting reliability. Ensure the alternator or charging coil is producing voltage within the expected range and that the voltage regulator is not allowing overcharging or undercharging, which can impact starting performance and battery health. Inspect all grounding points; a weak or corroded ground can lead to intermittent starting behavior and erratic ignition signals. It is also prudent to verify the integrity of the safety shut-off switches and wiring harnesses that interlock the starting sequence, ensuring they engage properly when the operator actuates the controls. A systematic approach to testing these components will yield accurate results and minimize unnecessary part replacement.

When assembling these checks into a service procedure, document observed values and any corrective actions taken. Establish a baseline of acceptable battery voltage, starter current draw, and ignition spark quality before and after maintenance. If faults persist after replacing susceptible components, consider more advanced diagnostics such as a controlled load test on the electrical system or a scope-based inspection of ignition waveforms. Finally, reassemble all components with proper torques and safety covers, perform a functional test run, and verify that the starting and charging systems operate smoothly under load and during idle with no abnormal surges or noise. This methodical process helps ensure long-term reliability of the starting and charging systems for the CRAFTSMAN 917.252610 lawn equipment.

Lubrication And Filters

Proper lubrication is essential for the longevity and reliable performance of the CRAFTSMAN 917.252610 lawn tractor. Begin by inspecting all lubrication points to identify any signs of wear, contamination, or leakage. Use the manufacturer-recommended lubricants and follow the specified intervals to ensure consistent protection of moving parts. Pay particular attention to the engine, transmission, and deck drive mechanism, as these areas experience the highest levels of stress during operation. Keep all lubrication ports clean and free of debris to prevent contaminants from entering critical systems during servicing. If you notice unusual noises, coming from bearings, or increased friction, recheck lubrication levels and apply fresh lubricant as needed to restore smooth operation.

When performing lubrication, always use fresh, high-quality oil that meets the engine specifications listed in the manual. The oil reservoir and internal galleries must be refilled to the correct level to maintain proper viscosity and cooling. After adding oil, run the engine briefly and then recheck the dipstick to confirm the correct level, ensuring there are no overfills that could cause foaming or leaks. For hydraulic or transmission components, use the recommended lubricant grade and confirm that seals and gaskets are intact before applying lubrication. Regular cleaning of lubrication points helps prevent dirt and debris from contaminating the lubricant, which can reduce efficiency and accelerate wear on gears and bearings.

Oil and filter service intervals vary based on usage, operating conditions, and environmental factors. In general, plan for a routine oil change at manufacturer-specified intervals, and replace oil filters with genuine parts to maintain optimal filtration. Keep a maintenance log to track service dates, hours of operation, and any observations about engine temperature or performance. If you operate in dusty or high-usage conditions, increase the frequency of oil and filter changes to maintain engine health. Always dispose of used oil and filters in accordance with local regulations, and recycle filters and containers where possible to support environmental responsibility.

When replacing filters, ensure the replacement parts match the exact specifications for the 917.252610 model. Tighten filter housings and drain plugs to the torque values outlined in the service manual to prevent leaks and ensure proper sealing. After completing lubrication and filter changes, wipe down all accessible surfaces to remove residue and inspect for signs of oil seepage around gaskets and seals. Regular inspection of lubrication points, combined with timely oil and filter servicing, contributes to smoother operation, longer component life, and reduced likelihood of catastrophic failures during peak mowing seasons.

Cooling System Maintenance

The cooling system in the CRAFTSMAN 917.252610 is critical for maintaining optimal engine temperature and preventing overheating under load. Begin with a thorough visual inspection of all accessible components, including the radiator fins, hoses, clamps, and the coolant reservoir if equipped. Look for signs of wear such as cracked hoses, hardened or swollen hose ends, loose or damaged clamps, and any coolant staining that could indicate leaks. Ensure the cooling fan engages properly when the engine reaches operating temperature and verify that there is adequate airflow through the radiator when the machine is running at idle or under light load. Document any abnormalities and plan corrective actions before attempting operation to avoid potential engine damage.

During inspection, check the coolant level according to the manufacturer’s specifications and verify the coolant color and condition. If the coolant appears discolored, contaminated, or contains particulate debris, a coolant flush may be necessary to protect the internal cooling passages and prevent corrosion. When adding or replacing coolant, use the recommended type and mix ratio specified for the unit, ensuring the system is cooled and safely depressurized before opening any caps or drains. After servicing, recheck the level again once the engine has reached operating temperature and settles to normal operating level. Proper coolant maintenance helps to maintain consistent engine performance and extends component life.

Radiator and hose maintenance is essential for reliable cooling performance. Inspect radiator fins for bending or blockage from dirt, leaves, or lint, and clean carefully using compressed air or a soft brush to avoid damaging the delicate fin structure. Remove any debris from the radiator cap area and ensure the cap seats securely to maintain correct pressure within the cooling system. Examine all hoses for flexibility, cracks, or signs of hardness, and replace any hose showing significant wear or elongation. It is important to verify that all hose clamps are present and tightened to the correct torque specification to prevent leaks under pressure. After cleaning and inspection, perform a functional test by starting the engine and observing for smooth temperature rise to normal operating range, ensuring there are no sudden temperature spikes or coolant leaks from joints or fittings.

Where applicable, inspect the radiator cap and overflow reservoir for proper operation. A faulty cap can lead to loss of pressure and boiling, while a malfunctioning overflow system can cause coolant loss and air pockets in the cooling circuit. If an overflow bottle is present, ensure the level indicators correspond to the correct operating range and that the bottle is not cracked or leaking. When reassembling, verify that all components are dry and free from lubricant or oil residues that could contaminate the coolant. Regular cooling system maintenance, including periodic inspections and timely replacements of worn parts, helps ensure consistent performance and reduces the risk of overheating during demanding tasks.

The mower deck and drive system of the Craftsman 917.252610 represent the core interfaces between power delivery, cutting performance, and overall machine stability. Proper maintenance begins with a thorough understanding of deck alignment, blade assembly health, and the condition of pulleys and belts that drive the cutting action. Regular inspection of deck height settings, spindle wear, and blade balance helps prevent uneven cutting and excessive vibration, which can shorten component life and degrade mowing quality. When servicing, ensure the mower is on a flat, stable surface, remove the spark plug for safety, and disconnect the battery or power source as appropriate before handling any moving parts. This approach reduces the risk of injury and sets the foundation for accurate diagnostics and effective repairs.

Deck alignment and maintenance require careful verification of deck position relative to the wheels and chassis. Start by checking deck skids and anti-scalp rollers for wear and proper contact with the ground. Misalignment can cause uneven cutting heights and strain on the spindle bearings. Use the manufacturer’s recommended measurement procedures and reference marks to ensure the deck is level side-to-side and front-to-back. When adjustments are needed, loosen the mounting bolts just enough to allow precise shimming, then re-tighten to the specified torque. After realigning, perform a test mow on a clipped area to confirm uniform blade engagement and consistent cut quality across the width of the deck.

Drive belt inspection and replacement are critical for reliable propulsion and efficient deck operation. Inspect belts for fraying, glazing, cracks, or missing ribs, and replace any belt showing signs of wear. Check belt tension according to the service data, ensuring belts run centered on pulleys without excessive deflection. When replacing a belt, inspect all pulleys for wear or misalignment, and replace worn idlers or sheaves to prevent premature belt failure. After installation, rotate the blades by hand to confirm smooth belt tension and to ensure no interference with other components. A properly tensioned and aligned drive belt system reduces slippage, improves mowing efficiency, and extends the life of the powertrain components.

Wheel and transmission basics influence traction, steering response, and overall machine control. Inspect wheel rims, tires, and axles for damage, cracks, or excessive play, and replace worn components to maintain consistent traction. Check the transmission fluid level if applicable and inspect for leaks around seals and gaskets. Ensure wheel alignment is correct to avoid uneven tire wear and to preserve straight-line mowing action. When diagnosing driveline issues, listen for unusual noises such as grinding or clunking, which may indicate worn bearings or gears inside the transaxle. Routine lubrication of accessible pivot points and drive shafts, using the recommended lubricants, helps maintain smooth operation and reduces resistance that can impact performance and fuel efficiency.

In-depth maintenance of the mower deck and drive system also involves preserving blade integrity and spindle health. Regularly inspect blade mounting bolts for proper torque, and replace any damaged or bent blades with OEM-recommended parts. Spindle housings should be checked for scoring, excessive play, or coolant leaks if the unit uses a liquid cooling approach for certain components. Clean the deck underside to remove built-up grass debris, which can restrict airflow and contribute to corrosion. Keeping the deck clean and components properly torqued ensures cutting quality remains high and that the mower operates without unnecessary stress on the drive system.

When performing diagnostic tasks, document readings and observed symptoms with dates and operating conditions to track trends over time. Have a clean, organized workspace and a clearly labeled parts trail to streamline future maintenance or repairs. If a fault persists after completing maintenance steps, consult the service manual's torque charts and alignment specifications to verify that every setting matches the factory recommendations. Adhering to these practices promotes safe operation, extends equipment life, and helps ensure predictable, reliable mowing performance in demanding outdoor conditions.

Proper maintenance of the deck and drive system directly affects cut quality, machine stability, and operator safety. By systematically inspecting deck alignment, drive belts, pulleys, wheels, and transmission interfaces, you can prevent common failure modes and reduce downtime. Implement a routine schedule that includes pre-mow checks, post-mow cleanups, and periodic component replacements as dictated by usage hours and environmental exposure. Maintaining a meticulous, methodical approach to upkeep provides a consistent baseline of performance that keeps the Craftsman 917.252610 dependable season after season.

Blades And Cutting I Performance

Blade inspection and sharpening guidelines emphasize maintaining the correct edge geometry and structural integrity to ensure optimal cutting performance. Begin by removing the cutting blade from the mower deck and inspecting for nicks, cracks, or warping along the entire edge. Any blade showing signs of significant damage should be replaced rather than sharpened, as damaged blades can cause uneven cuts or dangerous vibration. When sharpening, use a proper sharpening jig or a well-ground file to preserve the blade’s original bevel angle, typically around 30 degrees, while preserving a consistent edge along the entire length. After sharpening, balance the blade on a balancing device or a nail through the center bore to ensure there is no rotation imbalance that could strain the engine or create excessive vibration during operation. Reinstall the blade with the correct orientation, ensuring the mowing direction and blade bolts are torqued to the manufacturer’s specifications to avoid loosening during use. Regular inspection intervals should align with mowing frequency and terrain complexity to sustain peak cutting efficiency and prolong blade life.

Safety and cut quality considerations cover how blade condition directly affects operator safety and cut cleanliness. A dull or damaged blade increases engine load, reduces ground speed, and can cause the mower to push rather than cut, elevating the risk of kickback or blade failure. Always wear protective gloves when handling sharp blades and disconnect the spark plug wire or remove the spark plug cap to prevent accidental starting. When checking the cutting height and blade clearance, ensure that the blade is not rubbing against the mower deck shells or spindle assemblies, which can indicate misalignment or bent components. Use a stable surface to inspect mounting hardware for tightness, and replace any worn spindle bearings or bent spacers that could contribute to wobble that compromises cut quality. Finally, document the condition of the blades and any maintenance performed, as this record helps track performance trends and schedule preventive maintenance before performance degrades noticeably.

Safety And Maintenance Practices

Personal protective equipment (PPE) is essential when working on outdoor power equipment like the CRAFTSMAN 917.252610. Always begin with a thorough assessment of the work to be performed and select PPE appropriate for the tasks, including safety glasses or goggles to protect the eyes from flying debris, hearing protection when operating or testing noisy components, and cut-resistant gloves when handling sharp edges or exposed blades. Long sleeves, thermal pants, and sturdy, non-slip footwear help protect against sparks, hot surfaces, and accidental contact with moving parts. Use a face shield when performing tasks that may generate splatter, splashes, or flying particles, and ensure you have a clear workspace free of tripping hazards before starting any maintenance procedure. Regularly inspect PPE for wear and replace any damaged items to maintain a high level of protection throughout service tasks.

In addition to PPE, proper ergonomics and body positioning reduce the risk of injury during maintenance. Stand with feet shoulder-width apart, keep your back straight, and avoid twisting your torso under load. Use mechanical aids, such as stands or clamps, to secure parts and provide stable support while you loosen fasteners or lift components. Keep hand tools organized to minimize reach, and take short, deliberate breaks to prevent fatigue that can lead to mistakes. A clean, well-lit work area helps you maintain focus and reduces the chance of accidental contact with hot or sharp parts. Before starting any job, arrange materials and tools so they are easily reachable, and verify that the machine is in a safe and stable condition prior to disassembly or testing.

Lockout and service procedures are critical to preventing accidental machine start-up and ensuring a safe maintenance environment. Begin by disconnecting the spark plug, battery, or power source according to the specific model configuration to eliminate the risk of unexpected starting. Use a lockout device or tag-out system when multiple technicians are involved, and ensure that all power sources remain isolated during servicing. Verify absence of voltage or pressurized systems by attempting a controlled test per the manufacturer’s guidelines, and never rely on a single safety step as sufficient protection. After isolating power, explain and document all steps taken so future technicians understand the current state of the equipment, and recheck that all guards and shields are properly reinstalled before resuming operation. Always follow the sequence outlined in the service manual for disassembly, inspection, and reassembly to maintain safety and performance standards.

The troubleshooting guide for the CRAFTSMAN 917.252610 focuses on identifying symptoms first and then guiding you through systematic checks to isolate the root cause. Begin by confirming the exact symptom as reported by the user or observed during operation. Document any accompanying conditions such as engine temperature, fuel status, whether the engine cranks, or if there are unusual sounds or vibrations. Maintain a disciplined approach by eliminating simpler issues first, such as checking fuel supply, air filters, and battery connections, before delving into more complex mechanical or electrical causes. This approach reduces unnecessary disassembly and helps ensure user safety throughout the diagnostic process. A well-documented symptom profile accelerates repair because it provides clear direction for the subsequent fault isolation steps and helps determine if professional service is warranted.

The first flowchart path addresses starting and running problems. If the engine does not start, verify fuel quality and flow, inspect the spark plug for fouling or wear, and confirm that the ignition system is delivering a spark at the proper timing. If the engine cranks but fails to run, check for representative indicators such as RPM limiter, choke position, and carburetor adjustments, ensuring components are clean and free of obstructions. Should the machine start but stall or run erratically, investigate air leaks, vacuum lines, carburetor settings, and potential fuel contamination. In all cases, ensure safety precautions are followed, including disconnecting power when performing checks that involve electrical components or moving parts. Document observed readings and any corrective actions performed to build a reliable service history that can be referenced in future diagnostics.

The second flowchart path focuses on mechanical faults and performance deficiencies. If there is a loss of power or poor cutting performance, inspect the drive belt or pulley alignment, clutch engagement, and the blade assembly for sharpness, balance, and secure mounting. Examine the engine cooling system for proper airflow, cleaning any debris from cooling fins to prevent overheating which can reduce performance. For clutch or transmission concerns, verify proper lubrication, level of hydraulic or gear oil where applicable, and inspect for wear on linkage or gears. If unusual noises or vibrations are present, isolate the source by testing components individually and confirm that all fasteners are tightened to the manufacturer's specified torque. Regular maintenance records should accompany the troubleshooting notes to help distinguish intermittent issues from chronic faults that recur over time.

Common faults and fixes start with fuel and ignition problems, which are among the most frequent culprits in a small engine like the 917.252610. Typical fixes include replacing a fouled or worn spark plug, cleaning or rebuilding a clogged carburetor, and ensuring the air filter is clean and correctly installed. Fuel-related faults often arise from stale or contaminated gasoline, which can be mitigated by draining old fuel and using fresh, properly mixed fuel as specified by the manufacturer. If starting issues persist, inspect the fuel line for kinks, leaks, or blockages and verify that the primer bulb operates correctly if present. Electrical faults may involve corroded connections, damaged wiring insulation, or a blown fuse; in such cases, perform a careful inspection and restore or replace components as needed while maintaining proper safety practices. After any fix, perform a functional test to confirm that the issue is resolved and the machine operates smoothly under typical load conditions.

Additional recommendations emphasize preventative care to reduce future faults and extend service life. Schedule regular inspections of critical components such as the spark plug, air filter, and fuel system, and keep a log of maintenance activities with dates and observed performance. Use manufacturer-approved replacement parts to preserve reliability and warranty terms, and avoid makeshift repairs that could compromise safety or performance. When in doubt or when encountering unfamiliar symptoms, consult the official service manual or contact a qualified technician for guidance. A structured, repeatable troubleshooting routine helps ensure consistent results and minimizes downtime for the equipment owner.

The CRAFTSMAN 917.252610 mower is designed to deliver reliable performance through a carefully selected set of replacement parts that ensure long-term operation and safe use. When identifying replacement components, start with the critical wear items that affect safety and cutting efficiency, such as blade assemblies, spindle housings, and deck belts. These parts are designed to withstand the rigors of regular mowing, but they will still experience wear over time, especially under frequent use or challenging terrain. Always verify part numbers against the original equipment manufacturer (OEM) listings to guarantee compatibility and maintain warranty coverage. In addition to wear items, keep a stock of common fasteners, gaskets, and seals that may degrade or corrode, as having on-hand replacements reduces downtime and preserves your maintenance schedule. For any component replacement, follow torque specifications and alignment procedures precisely to avoid vibration, premature wear, or unsafe operation of the mower. Regular inspection of the control linkages and safety interlocks is also essential to ensure reliable engagement and shutdown in emergency scenarios.

Recommended accessories and upgrades for the 917.252610 enhance safety, performance, and convenience during routine maintenance and mowing tasks. A high-visibility tool kit or magnetic tray helps keep fasteners organized during disassembly and reassembly, reducing the risk of misplaced parts. Upgrading to OEM-approved deck wheels and anti-scuff washers can improve deck stability and cut quality on uneven terrain, while service-grade air filters and pre-cleaners help maintain engine efficiency and longevity in dusty environments. For added edge-to-edge cutting performance, consider a quality OEM blade set designed for the mower’s deck width and blade geometry, ensuring balanced spins and reduced vibration. Lighting kits or reflective decals are practical upgrades for low-light mowing conditions and improved visibility in the workspace. Finally, a maintenance timer or service reminder system can help schedule regular inspections, oil checks, and blade sharpenings to extend the overall life of the machine.

Maintenance Schedule And Record Keeping

Establishing a regular maintenance cadence for your CRAFTSMAN 917.252610 is essential to preserving performance, extending component life, and preventing unexpected downtime during critical yard work. Start with a baseline inspection that aligns with the machine’s typical usage pattern, logging hours of operation and the type of tasks being performed. Schedule a comprehensive check at least every 25 hours of operation for routine systems such as the engine, transmission, belts, and drive components. For seasonal equipment users, incorporate a more detailed annual service that includes fuel system cleaning, air filter replacement, spark plug inspection, and a full lubrication of all movable joints. By framing maintenance around both time and usage, you can anticipate wear and address it before it becomes a problem.

During every maintenance cycle, perform a visual inspection for signs of wear, corrosion, or damage. Look for cracked or frayed belts, loose fasteners, oil leaks, and worn cutting decks or blades. Rotate and inspect drive wheels or tires for even wear, and verify that all safety shields and guards remain intact and properly secured. Check the cooling system or engine cooling fins for debris and ensure there is unobstructed airflow. Document any abnormal findings and address them promptly to prevent escalation. Keeping a consistent record helps you track deterioration trends and schedule proactive replacements rather than reactive repairs.

Engine and fuel system maintenance should follow the manufacturer’s specifications, including air filter replacement, spark plug inspection, and fuel filter changes at recommended intervals. Use clean, fresh fuel and appropriate stabilizers if the equipment will be stored for extended periods. Check the lubrication points and apply the correct grade and amount of oil or grease as specified in the service manual. Inspect the exhaust system and muffler for blockages or corrosion, and ensure that gaskets and seals are in good condition. A disciplined approach to engine maintenance will improve starting reliability, fuel efficiency, and overall power output while reducing the risk of overheating or run-ability issues during heavy use.

Record keeping practices are a vital companion to any maintenance routine. Maintain a dedicated service log with dates, hour meters, tasks performed, parts replaced, and any observations or anomalies. Include the technician’s name or initials for accountability and future reference. Use a standardized form or digital spreadsheet to allow quick searching by date, component, or issue. Photograph or scan critical maintenance steps and store these references with the log for visual confirmation of work done and parts installed. Regularly review the maintenance log to identify recurring problems, plan replacements before failures, and ensure compliance with warranty requirements or manufacturer recommendations.

When ordering parts or scheduling professional service, align the maintenance schedule with the availability of recommended parts and service windows. Keep spare belts, filters, spark plugs, lubricants, and fluids on hand to minimize downtime between tasks. Set reminders for key service milestones such as air filter changes, spark plug replacements, and blade or deck maintenance, and adjust intervals based on operating conditions like dusty environments or heavy load tasks. A diligent maintenance schedule supported by accurate records will enhance safety, reliability, and resale value of the CRAFTSMAN 917.252610 over its service life.