GRAVELY PROSTANCE 60 Service Manual

Overview and scope

The GRAVELY PROSTANCE 60 is a commercial-grade outdoor power equipment platform designed to deliver reliable performance in demanding mowing and maintenance environments. This section outlines the purpose of the service manual and identifies the intended audience, providing a framework for technicians to perform inspections, maintenance, and repairs with consistency. It emphasizes safety, accuracy, and adherence to manufacturer specifications to ensure optimal operation and longevity of the machine. By understanding the scope, technicians can plan service intervals, source correct parts, and follow proper procedures that minimize downtime and maximize productivity on the job site.

The manual is intended for trained service personnel, dealership technicians, and experienced equipment operators who require detailed guidance on maintenance procedures, troubleshooting methods, and component replacement. It assumes a level of mechanical competence, familiarity with standard repair tools, and access to the Gravely service resources and torque specifications. While it provides thorough instructions, it also references safety practices and cautions practitioners to verify current service bulletins and updates from Gravely to account for any design improvements or revisions. The information aims to support accurate diagnostics, safe disassembly and reassembly, and verification steps that confirm proper function after maintenance.

The scope includes an overview of the machine’s major subsystems, including the drive system, hydraulic interfaces, cutting deck, electrical controls, and safety interlocks. It covers routine maintenance tasks, common wear items, and procedures for addressing typical service scenarios encountered in-field. While the focus is on routine service and repair, the manual also provides guidance for more complex diagnostics, component replacements, and alignment procedures. The intent is to enable technicians to perform effective service within the intended operating envelope of the GRAVELY PROSTANCE 60, ensuring reliability, operator safety, and consistent performance across different job conditions.

In practice, this section helps establish clear expectations for service workflows, tool requirements, and documentation practices. It supports technicians in planning preventive maintenance schedules, identifying parts to stock, and understanding how subsystems interact during operation. By delineating purpose and audience alongside key safety considerations, the manual reinforces a disciplined approach to service that reduces the risk of incorrect repairs and extends the equipment’s service life. The ultimate goal is to empower qualified personnel to maintain and restore peak performance while maintaining compliance with applicable safety and environmental standards.

In addition to routine checks, the overview highlights the importance of environmental considerations such as proper fluid handling, spill prevention, and compliance with local disposal regulations. It also notes that some procedures may require receiver equipment or certified lifting and jacking techniques to ensure stability during service. The document encourages technicians to consult the latest revision and to annotate any deviations or field modifications observed during maintenance, so future service cycles reflect the most accurate information. This proactive approach helps sustain warranty coverage and supports dependable operation across multiple seasons of use.

Overall, the overview and scope establish the foundation for a structured, safe, and effective service process for the GRAVELY PROSTANCE 60. By clarifying the intended audience and core safety considerations up front, technicians can navigate the manual with confidence, execute procedures accurately, and return the machine to service with verifiable, high-quality results. The section also serves as a reference for trainers and supervisors who oversee field service work, ensuring consistency in workmanship and adherence to Gravely’s maintenance standards.

Key safety considerations span personal protective equipment, lockout/tagout practices, and the identification of high-risk tasks such as hydraulic system work and belt or pulley replacements. The manual stresses the need to depressurize hydraulic circuits before any component removal and to follow torque specifications precisely when reassembling critical fasteners. It also underlines the importance of verifying that safety interlocks, shields, and guards are restored after service, preventing accidental operation of the machine while under maintenance. By embedding these safety practices within every procedure, the manual supports safer work environments and reduces the likelihood of injuries or equipment damage.

Equipment and tools required

When performing service on the Gravely Prostance 60, assembling a complete and organized toolkit is essential to ensure precise work and safe handling. Begin with precision measurement devices such as a digital caliper and a torque wrench calibrated to the manufacturer’s specifications. A set of standard and metric socket wrenches, combination wrenches, and hex keys should cover the majority of fasteners found on the machine. Include keeps for fasteners of varying lengths and thread pitches to prevent cross-threading and lost hardware during disassembly and reassembly. A magnetic tray or parts organizer helps maintain order and reduces the chance of misplacing small components during maintenance tasks.

Specialized tools for Gravely Prostance 60 include a high-quality engine/drive belt tool set, tension gauges, and pulley pullers designed for mower and commercial equipment. A graphite or nylon scraper, rubber mallet, and non-marking jaw pliers assist in gentle component removal without damaging delicate surfaces. Depending on the maintenance task, you may require a service manual-specific puller for blades, hub assemblies, or spindle components, along with a harmonic balancer remover if applicable. A dedicated spark plug wrench and insulated tools are advisable for electrical system work to reduce the risk of shock and short circuits. Ensure you have a repair stand or robust workbench with secure mounting for stability during repairs, plus a lightweight creeper or kneeling pad for ergonomic access to underside areas.

Personal protective equipment and safe handling practices are critical for every maintenance operation. Always wear safety glasses with side shields and cut-resistant gloves when handling sharp edges, rotating parts, or hot components. Use hearing protection when performing tasks that generate high noise levels, such as grinding or engine start testing. A dust mask or respirator may be necessary when performing tasks that create fine particulates or chemical fumes, such as grinding, sanding, or applying cleaners and solvents. Wear long sleeves, pants, and closed-toe footwear to reduce abrasion injuries, and keep hair and loose clothing secured away from moving parts. Before work begins, disconnect the power source and engage any blade brakes or safety interlocks; verify that the machine cannot start unexpectedly. Finally, arrange a clear, obstacle-free workspace with adequate lighting, and maintain a clean environment to prevent slips and contamination during servicing.

Machine specifications and features

Overview of model specifications: The GRAVELY PROSTANCE 60 is engineered to deliver robust performance in commercial and demanding residential settings. This model features a heavy-duty chassis designed to withstand rigorous use, with precise balance to enhance operator stability and comfort during extended mowing sessions. Engine specifications typically include a durable air-cooled gasoline powerplant optimized for high-efficiency fuel consumption, reliable cold-start performance, and reduced emissions in compliance with applicable standards. The cutting deck is engineered for uniform blade engagement, with reinforced spindles and high-precision belt drives to maintain consistent grass containment and edging capability. Overall dimensions, weight distribution, and ground clearance are tuned to provide excellent maneuverability on varied terrain, including slopes and uneven ground, while preserving operator visibility of critical controls and the work area.

Key components and interfaces: The operator station is designed for ergonomic control, featuring a multi-function dash, intuitive levers, and clearly labeled safety interlocks. The cutting deck drive system uses robust spindle assemblies, sealed bearings, and a belt-driven transmission designed to resist wear and reduce noise during operation. The fuel and air intake systems are arranged to minimize ingestion of debris and allow for easy maintenance, with accessible air filters and a serviceable fuel filter. Electrical interfaces include a sealed harness with weather-resistant connectors, a quick-release battery disconnect for safety, and diagnostic indicators that guide routine maintenance. The cooling system, including an efficient radiator and fan arrangement, is positioned to maximize airflow while protecting vital components from heat buildup. Each interface is designed to be inspected and serviced with standard hand tools, ensuring field technicians can perform routine maintenance with minimal downtime.

Before performing any service on the GRAVELY PROSTANCE 60, ensure the machine is on a flat, stable surface with the ignition off and the key removed. Take personal safety precautions by wearing eye protection, gloves, and hearing protection as appropriate. Inspect the exterior for obvious damage, loose fasteners, or missing shields. Verify that all protective covers are in place and that the operator presence system is functioning correctly. Document any unusual observations and prepare a work order to address issues before proceeding with further diagnostics or operation.

Pre operation inspection begins with fluid and battery checks. Check engine oil level with the dipstick and top off if necessary, ensuring the oil meets the manufacturer’s specification. Inspect the fuel system for leaks, cracks, or signs of contamination, and confirm that the fuel cap seals properly. Examine the battery terminals for corrosion and ensure a secure connection, testing the battery voltage to confirm adequate charge. Look for any signs of overheating or fuel odor that could indicate a larger issue requiring attention before startup.

Next, assess the drive and steering systems for smooth operation. Move the control levers to their neutral positions and verify that the drive clutches engage and disengage without binding. Check the caster and wheel alignment for wear or misalignment, and inspect the tire condition for proper inflation and tread depth. Test the brake system for proper function, ensuring full engagement and release with no grinding or spongy feel. Note any abnormal noises or vibrations and determine if servicing or replacement is required before use.

Calibration and system checks involve verifying that all measurement and control systems are within factory tolerances. Confirm that seat and control positions align with the operator’s ergonomics and safety requirements. Use the service manual’s recommended procedures to verify throttle, PTO engagement, and deck lift mechanisms operate smoothly. Check electrical connections for security and absence of corrosion, and test the main harness for continuity where specified. Record all readings and compare them to the manufacturer’s baseline values to determine if adjustments are needed before the unit is placed into service.

During calibration, ensure the cutting deck, if applicable, is properly mounted and balanced. Inspect the spindle bearings for wear and proper lubrication, and rotate the blades to detect any loose hardware or obstruction. Verify that the height adjustment mechanism provides consistent and repeatable results across the full range of settings. If a calibration process requires a test run, perform it at low speed in a controlled area with the operator present and ready to intervene. Document calibration results and any deviations, planning corrective actions as necessary to maintain optimal performance and safety.

Finally, complete a functional test under supervision to confirm that all systems respond correctly to operator inputs. Start the engine with the safety interlocks intact and observe for abnormal exhaust, unusual noises, or excessive smoke. Verify the braking, steering, and acceleration respond predictably, and ensure that the safety features, including the operator presence and kill switches, are fully operational. Conclude with a written sign-off indicating that the machine passed pre operation and calibration checks, along with any notes for maintenance scheduling or part replacement. Maintain a clean, organized work area and store any removed tools and components as required by your service procedures.

Operation procedures for the GRAVELY PROSTANCE 60 focus on delivering reliable performance while prioritizing operator safety and machine longevity. Begin with a thorough pre-operation check, ensuring all fluid levels are correct, the battery is charged, tires are inflated to the recommended pressure, and safety devices are in proper working order. Engage the parking brake, confirm the cutting deck is lowered to the correct mowing height, and verify that the area is clear of obstacles and bystanders before starting the engine. Familiarize yourself with the display indicators and audible alerts, as these provide critical information about system status, maintenance needs, and potential faults that require attention prior to operation. A systematic approach to starting and stopping helps prevent unnecessary wear and reduces the risk of unexpected movements when transitioning from idle to active mowing.

Operational controls and safe driving practices are essential for both efficiency and safety. The ProStance 60 is designed with intuitive levers, pedals, and switches that control propulsion, deceleration, steering, and deck engagement. Always wear appropriate personal protective equipment and maintain a comfortable, balanced stance while operating the machine. Keep hands and feet away from moving parts and never reach under the deck or toward hot surfaces during operation. When turning, use smooth, deliberate inputs to avoid tipping or losing traction, especially on inclines or uneven terrain. Regularly check for unusual noises, vibrations, or warning lights that could indicate a mechanical issue requiring immediate attention. Adherence to safe driving practices minimizes operator fatigue and extends the life of drive belts and deck components.

Mowing and deck procedures require careful attention to cut quality, blade condition, and deck cleanliness. Before mowing, inspect the blades for sharpness, balance, and any signs of damage, replacing or sharpening as needed to ensure an even cut. Check the deck belt for wear and proper tension, and clean any grass buildup that can impede airflow and lead to overheating. When engaging the mowing function, maintain a steady speed appropriate for the terrain and height of the grass, avoiding sudden accelerations that could cause scalpings or deck damage. After mowing, lower the deck to transport height, disengage blades, and perform a post-operation deck inspection to identify any loose fasteners or debris that may require attention. Regular maintenance of the deck assembly, including pulleys and spindle bearings, is critical for consistent mowing performance and noise reduction.

Terrain handling and adjustments are essential for maintaining traction, stability, and mowing efficiency across varied landscapes. Evaluate slopes, turns, and surface conditions before operation, selecting an appropriate mowing height and speed for safety. When traversing uneven ground, reduce speed, engage any stabilization features if equipped, and avoid sudden directional changes that could destabilize the machine. Use the ballast or weight distribution guidelines provided by the manufacturer to maintain balance on slopes and prevent tipping. If the gnarly terrain includes tall grass, brush, or soft ground, consider adjusting tire pressure within the recommended range to optimize grip and minimize rutting. Regularly inspect height adjustment mechanisms and tilt sensors to ensure accurate cutting height and predictable machine behavior in diverse yard conditions.

Maintenance and service intervals for the GRAVELY PROSTANCE 60 are designed to maximize performance, reliability, and safety of the equipment. Following a structured schedule helps identify wear and potential failures before they impact operation. Regular checks also support longer component life, reduce unexpected downtime, and maintain optimal cutting and propulsion efficiency. Operators should establish a routine that aligns with usage patterns, environmental conditions, and workload intensity, adjusting frequencies accordingly while adhering to the manufacturer’s guidelines. Proper record-keeping of all inspections and services is recommended to track trends and plan replacements proactively.

Maintenance and service intervals

Daily maintenance checklist

Daily maintenance should be performed before the machine is operated each day to ensure safe and reliable performance. Begin by inspecting the overall condition of the unit for loose hardware, unusual vibrations, or visible damage, and address any concerns before startup. Check fluid levels including engine oil, hydraulic fluid, coolant where applicable, and fuel, ensuring they are within recommended ranges and free from contamination. Inspect air filters, muffler or exhaust system, and cooling components for obstructions or debris that could impair cooling or airflow. Finally, verify tire pressure or wheel condition, belt tension where present, and engagement controls to confirm full functionality and responsiveness.

Periodic maintenance schedule

The periodic maintenance schedule covers more in-depth service tasks that should be performed at defined intervals based on operating hours or calendar time. At the first stage, many units require a thorough engine and hydrostatic system inspection, including checking for leaks, tightening fasteners, and replacing filters as specified by the manufacturer. A more detailed lubrication routine should be followed, applying the correct lubricants to pivot points, bearings, and linkages while avoiding over-application that can attract debris. Electrical system checks should include battery condition, charging system operation, and wiring integrity to prevent intermittent faults. Finally, verify the condition of safety systems, such as seat switches, blade engagement mechanisms, and braking components, to ensure reliable operation and operator protection.

Lubrication and fluid management

Proper lubrication and fluid management are critical for reducing wear and extending the service life of moving parts. Use the recommended grades of engine oil, hydraulic fluid, and gear lubricants as specified in the user manual, and replace them at the designated intervals to prevent sludge buildup and viscosity changes. Bearings, drive chains, and linkages should be lubricated with appropriate lubricants that resist fling-off and projectiles, maintaining smooth motion and minimizing resistance. Fluid levels must be checked frequently, with attention paid to any signs of contamination, such as water ingress or metal shavings, which require immediate investigation and remediation. Drain and refill hydraulic systems using clean fluid, and purge air from lines if the design requires it, following the exact procedures to avoid introducing contaminants or air locks into the system.

Diagnostics and troubleshooting are essential for maintaining peak performance and safety in the GRAVELY PROSTANCE 60. Start with a calm, methodical assessment of the machine’s symptoms before diving into any repair work. Document any fault indicators as they appear, including unusual noises, abnormal vibrations, warning lights, or changes in cutting quality. Establish a baseline by noting engine RPMs, belt tensions, and electrical connections when the unit is operating normally, so deviations can be quickly identified during diagnostics. A clean, well-lit workspace with the right tools will help prevent misdiagnosis and reduce the risk of damage to components during inspection.

Common fault indicators include indicators such as engine hard starts, misfires, stalling, loss of power, and overheating. Pay careful attention to warning lamps on the instrument panel and any abnormal sensor readings displayed by the onboard diagnostic system. Visual inspections should cover fuel lines for leaks, air intake for obstructions, and electrical harnesses for loose connections or damaged insulation. Sound diagnostics can reveal issues not immediately visible; for example, rattles can indicate loose mounting hardware or worn bearings, while grinding noises may signal bearing failure or gear wear. Always verify that the battery is in good condition and that terminals are clean and tight, as electrical faults can masquerade as mechanical problems.

Troubleshooting flow charts and remedies involve a systematic approach to isolate the problem. Begin with safety checks: ensure the unit is powered down, remove the ignition key, and disconnect the battery if applicable before performing any inspection. Next, verify fuel quality and delivery, including checking the fuel filter, fuel pump, and carburetion or fuel injection system for proper operation. If the engine runs but lacks power, inspect the air filter, intake manifold, and exhaust system for restrictions. For electrical issues, test critical sensors and circuits with a multimeter, checking for proper voltages and continuity. If mechanical symptoms persist, assess belt tension, blade condition, spindle assemblies, and linkage adjusted per manufacturer specifications, ensuring all fasteners are secure and correctly torqued.

When using flow charts, follow the decision points in order and record the outcomes at each step. If a fault remains unresolved after the initial pass, proceed to a deeper inspection of subsystems, such as the hydraulic or drive systems, which may require specialized gauges or diagnostic tools. Replace worn components with OEM-approved parts and re-test the system after each replacement to confirm remediation. Always adhere to service intervals and calibration procedures outlined by Gravely for the PROSTANCE 60 to maintain warranty compliance and optimal performance. After completing repairs, perform a functional test in a safe area, verifying that all safety features operate correctly and that machine behavior aligns with expected specifications.

Disassembly and reassembly procedures

Service access and safety precautions: Before beginning any disassembly, ensure the Gravely ProStance 60 is on a flat, stable surface with the ignition switch in the OFF position and the battery disconnected to prevent accidental engine start or electrical shock. Remove the spark plug wire and allow any stored electrical energy to dissipate. Consult the machine’s owner manual for torque specs and fastener sizes, and use the proper protective equipment such as safety glasses, gloves, and hearing protection if tests or alignments involve noisy components. Label and organize all fasteners, clips, and seals as they are removed to facilitate accurate reassembly, and photograph complicated assemblies to serve as a visual reference later. When working under the deck or near the cooling fins, ensure the machine is properly supported with jack stands or a lift to prevent tipping or injury. Finally, check for any signs of wear, corrosion, or damage on critical parts before removal to avoid unnecessary disassembly work and to maintain safety margins during reassembly.

Component removal and replacement guidelines: Begin with the engine system components that require minimal disassembly to access, such as protective shrouds or access panels, ensuring the engine is cool before touching any components. When removing the carburetor or fuel delivery components, carefully detach hoses and clamps, noting their routing to ensure correct reattachment. Inspect fuel lines for cracks or hardening and replace any compromised lines to prevent fuel leaks and potential fire hazards. For the electrical system, disconnect the battery leads in the correct sequence and use insulated tools to avoid short circuits; replace worn connectors and ensure all grounds are clean and secure to maintain reliable operation. When removing the deck or cutting system components, support the deck with appropriate stands and disconnect the drive cables and sensors in an orderly fashion, labeling each connection to streamline reassembly. For any worn or damaged components such as belts, pulleys, or bearings, replace with OEM-approved parts and verify that tension and alignment are accurate after installation. During reassembly, reverse the removal order, torque fasteners to the specified values, and re-check system functions incrementally, starting with safety interlocks and moving to live tests. Finally, perform a comprehensive functional inspection, including belt tension, deck level, drive engagement, and machine neutral safety checks, ensuring the machine operates smoothly without unusual noises or vibrations.

Electrical system and wiring

The electrical system of the Gravely ProStance 60 is designed to deliver reliable power to all operating components while protecting sensitive electronics from faults and moisture. This section provides a detailed overview of the major subsystems, including the battery circuit, charging system, ignition and safety interlocks, and the wiring harness layout. A thorough understanding of these elements helps diagnose issues quickly and perform maintenance with confidence. The system relies on robust grounding practices, proper fuse protection, and secure connector interfaces to maintain consistent performance in demanding outdoor environments.

The electrical system overview covers power generation, distribution, and control signals that coordinate operation of the drive motors, cutting deck electronics, and operator controls. The primary power source is a high-capacity battery or battery pack, which feeds a voltage regulator and motor controllers. Recent models incorporate smart sensors that monitor battery health, temperature, and current draw to prevent overheating and premature wear. The ignition and safety interlock circuits ensure the engine or electric drive system cannot start unless the seat switch and dead-man switch are engaged, enhancing operator safety. Understanding how these subsystems interact is essential for diagnosing intermittent starts, stalls, or unexpected shutdowns.

Maintenance requires careful inspection of the battery terminals for corrosion, tightness, and clean surfaces, as poor connections can cause voltage drops and erratic performance. Inspect the wiring harness for insulation wear, pinched cables, or damaged protective conduits, especially where the harness traverses the frame or interfaces with moving components. Use the correct pull-test methods when assessing connector integrity and ensure shielded communication lines remain free of interference that could affect sensor readings. When testing circuits, always verify that fuses and circuit breakers are sized appropriately for the specific load and that protective devices trip reliably under fault conditions. Regular cleaning of connector housings helps prevent moisture intrusion and corrosion, which are common drivers of intermittent electrical faults.

Connection and wiring integrity checks require a systematic approach to verify that all circuits are continuous and correctly mapped. Begin by mapping the harness routes against factory diagrams, then perform a visual inspection for signs of abrasion, heat damage, or chemical exposure. Use a digital multimeter to confirm voltage levels at key test points, comparing observed values to the manufacturer’s specifications under typical operating conditions. For signal lines that control sensors and actuators, perform a resistance and continuity check to ensure there are no open or shorted paths. Document any deviations and trace them back to the source, whether it is a faulty connector, a damaged wire, or a mounting fault that causes chafing. After repairs, re-seat all connectors with a light but decisive torque to prevent loosening during vibration from operation.

Special attention must be given to the charging system, which maintains battery health and readiness for operation. Inspect the charging circuit for proper voltage output, regulator performance, and integrity of charging cables. A failing regulator or high-resistance connection can cause undercharging, leading to reduced performance and shortened run times. In cold environments, verify that the charging system maintains adequate voltage despite increased battery internal resistance. When replacing any wiring or connectors, use weather-resistant components rated for outdoor use and ensure all seals and grommets are re-installed to preserve environmental protection ratings. Properly labeled and organized harnesses simplify future maintenance and reduce the risk of misconnection during reassembly.

For safety-critical circuits such as ignition, seat and interlock sensors, and drive controls, perform functional tests after any service. Confirm that safety interlocks inhibit starting when improper conditions are detected and restore operability only when all conditions are satisfied. Validate that all operator inputs, including throttle, brake, and deck engagement controls, produce correct signals without lag or unintended feedback. If fault codes are present, reference the service manual’s fault code table and proceed with stepwise troubleshooting to isolate the responsible module or sensor. Concluding checks with a final test run ensures that the electrical system operates harmoniously with mechanical subsystems and that the unit remains safe and reliable for continued use.

In summary, the Electrical system and wiring section emphasizes proactive inspection, precise testing, and disciplined reassembly practices. By following proper connection integrity checks, harness routing, and protective measures, technicians can extend component life, improve reliability, and reduce downtime. Adhering to these guidelines supports optimal performance of the Gravely ProStance 60 in diverse conditions and ensures safe operation for the end user.

The hydraulic system in the Gravely ProStance 60 is a closed, fluid-filled network designed to deliver precise, rapid, and consistent movement of all hydraulic actuators that control the stance and drive mechanisms. The system relies on a compact pump, a reservoir with adequate capacity, filtering elements to remove particulates, and a network of lines and valves that route hydraulic fluid to cylinders and motors. Regular inspection of hoses, seals, and connection fittings is essential to maintain pressure integrity and prevent leaks that can compromise performance. When functioning properly, the hydraulic system provides smooth operation, quick response times, and reliable power delivery even under load. Always verify fluid type and specification in the manufacturer’s guide before any maintenance to ensure compatibility and avoid damage to internal components.

Begin with a thorough check of the hydraulic reservoir, noting oil level, color, and any signs of contamination. Use only the recommended hydraulic fluid, typically a synthetic or mineral-based hydraulic oil with the specified viscosity. Contaminants such as dirt or water can accelerate wear on pumps and valves, reduce efficiency, and shorten component life. If the fluid appears milky, foamy, or unusually dark, perform a system drain and thorough filtration before refilling to restore proper lubrication and cooling. It is also prudent to replace any in-line filters during routine maintenance to maintain clean flow and protect sensitive actuators from particulate damage.

Inspect hoses and hydraulic lines for cracks, bulges, or loose fittings, paying special attention to high-pressure segments near the pump and control valves. Leaks may be subtle at first but can rapidly escalate under operation, leading to loss of performance or sudden drops in articulations. Ensure clamps and fittings are torqued to the manufacturer’s specification and that protective coverings remain intact to prevent abrasion. If a leak is detected, isolate the circuit and replace the affected line or seal rather than attempting field repairs that could compromise safety or performance. After replacing any component, bleed the air from the system as instructed to restore correct operation and prevent cavitation in the pump.

The fuel system safety and maintenance section includes precautions to prevent ignition hazards and environmental contamination. Always work in a well-ventilated area and disconnect any power sources before performing service. Inspect fuel lines for cracking, soft spots, and signs of aging, replacing any compromised segments promptly. Clean fuel caps, filters, and reservoirs to avoid introducing contaminants into the system, and use only approved fuels and additives specified by Gravely. Regularly test fuel pumps and injectors for consistent flow and pressure; any uneven supply can cause erratic engine performance or stalling. When performing maintenance on the fuel system, ensure all seals and gaskets are replaced with genuine components to guarantee a proper seal and to prevent leaks that could lead to fire hazards or environmental exposure.

Fuel safety also involves careful handling during maintenance: prevent spills, promptly clean any fuel contact with hot surfaces, and use appropriate absorbent materials for cleanup. Systems should be depressurized before disconnecting any lines to avoid dangerous spray or sudden release of pressure. Maintain a clean, organized work area and store fuels and solvents in approved containers away from heat sources. After completing any fuel system service, perform a functional check in a controlled environment to confirm there are no leaks, and verify that all safety interlocks and sensors respond correctly. Documentation of maintenance actions, fuel type, and dates helps establish a reliable service history and supports future troubleshooting efforts.

The GRAVELY PROSTANCE 60 is engineered for reliable performance, and proper parts identification is essential for timely maintenance and safe operation. Begin by verifying the model number, serial number, and manufactured date engraved on the frame or operator’s console to ensure you source compatible components. Catalogs from Gravely and authorized distributors will list OEM part numbers, cross-referenced with the machine’s configuration, including deck size, drive type, and any factory-installed accessories. When ordering, always request the exact part number rather than a generic substitute to avoid mismatches that could affect performance or void warranties. Maintaining a current parts list for common wear items, such as belts, blades, bearings, and filters, helps to expedite service and reduce downtime. Keep a dedicated, magnetized tray or labeled containers for fasteners and small parts to prevent loss during disassembly and reassembly. Always verify quantity, part orientation, and compatibility against the exploded view diagrams provided in the service manual before placing an order.

Replacement parts and consumables for the GRAVELY PROSTANCE 60 are selected to support long service life under typical mowing and debris handling conditions. Start with high-quality engine and fuel system components, including air filters, fuel filters, and oil filters, which protect the engine and maintain optimal fuel efficiency. For the hydraulic and drive systems, stock up on hydraulic fluid compatible with your model’s specifications, along with hydraulic filters, seals, and O-rings that resist wear from fluctuating pressures and temperatures. Deck and blade maintenance requires sharp, balanced blades and the correct mounting hardware; replacing worn blades reduces vibration and vibration-induced component fatigue. Belts and pulleys should be inspected for wear, fraying, or glazing, and replaced with OEM equivalents to preserve belt alignment and power transfer. Lubricants, including chassis grease and pivot point lubricants, should be selected per the manufacturer’s guidance to protect moving joints from rust and seize-up during operation.

Exact consumables recommended for routine service typically include air filters, oil filters, fuel filters, and spark plugs (for gasoline models), along with hydraulic filters and specialty seals where applicable. Keep an organized spare parts kit that includes common wear items such as blade bolts, mounting hardware, cutter deck spindle seals, and PTO-related components. For cold-weather storage or off-season maintenance, stock fuel stabilizer and engine fogging oil to protect internal components from varnish and corrosion. Always reference the OEM parts catalog to confirm compatible filter lines, vented vs. non-vented configurations, and any variant parts needed for different sub-models or regional emissions configurations. Maintaining a perpetual rotation of consumables based on service intervals helps minimize unexpected downtime and maintains mower performance across seasons.

Storage and shutdown procedures

Long term storage requires careful preparation to prevent corrosion, fuel degradation, and component damage. Begin by ensuring the machine is clean and dry, removing any dirt, grass, or debris from the cutting deck, air intakes, and cooling fins. Inspect belts, pulleys, and drive components for signs of wear or cracking, replacing any damaged parts before storage. If the model is gasoline-powered, fill the fuel tank to the recommended level and add a stabilizing fuel additive to prevent gasoline breakdown during storage. Run the engine after stabilizer has been added to circulate stabilized fuel through the carburetor and fuel system, then allow the engine to reach operating temperature before shutting down. Store the equipment in a dry, well-ventilated area away from direct sunlight and extreme temperatures to minimize rubber and plastic degradation over time.

Pre season and end of season shutdown steps are designed to protect the engine, hydraulic systems, and cutting components from service interruption and to facilitate quick startup when operations resume. Stop the engine and remove the key, if applicable, and allow all moving parts to come to a complete stop before performing maintenance. Remove any residual fuel from the carburetor and fuel lines if long-term inactivity is expected, and drain the fuel from the tank only if permitted by local regulations and manufacturer guidance. At minimum, run the engine until it reaches a stable idle to vaporize any remaining fuel and prevent varnish formation in the carburetor. Then, inspect the air filter for cleanliness and replace it if it shows signs of excessive wear or contamination to ensure clean air intake when restarting.

During shutdown, lubricate and protect exposed metal surfaces with a light coating of manufacturer-approved oil or corrosion inhibitor to reduce rust formation. Check battery condition, ensuring terminals are clean and tightened, and disconnect if the machine will be stored for an extended period. For machines with electric starting systems, apply the manufacturer’s recommended battery maintenance procedure, which may include removing the battery, keeping it charged, or using a trickle charger. Finally, document any service performed, parts replaced, and notable symptoms observed; maintaining a simple maintenance log helps plan inspections and part replacements before the next season begins.