Why is my Yamaha YFM660FP making a whining noise during acceleration and deceleration?
If you notice a 'whining' noise that changes with acceleration and deceleration in your Yamaha Offroad Vehicle, it could be due to incorrect reassembly or insufficient gear lash. Investigate any unusual noises.
General| Brand | Yamaha |
|---|---|
| Model | YFM660FP |
| Category | Offroad Vehicle |
| Language | English |
Details for identifying the vehicle and model.
Describes front differential operation in 2WD, 4WD, and Diff-Lock modes.
Explains the 3-axle transmission with chain drive for reverse.
Guidelines for maintenance preparation, parts, and seals.
Provides overall dimensions, weight, engine type, and capacities.
Details engine component measurements, tolerances, and limits.
Covers steering, suspension, wheels, and brake specifications.
Lists specifications for ignition, charging, starting, and lighting systems.
Illustrates the correct routing of wires, hoses, and cables.
Outlines recommended service intervals for various components and fluids.
Details the removal and installation of the seat and side panels.
Covers engine adjustments like valve clearance and idling speed.
Details chassis maintenance, including brakes, steering, and suspension.
Procedures for checking and adjusting electrical components.
Step-by-step instructions for removing the engine assembly and its related parts.
Procedures for removing, checking, and installing the cylinder head cover.
Instructions for removing, checking, and installing rocker arms and shafts.
Details removal, inspection, and installation of camshaft and cylinder head components.
Procedures for removing, checking, and installing valves and springs.
Steps for removing, checking, and installing the cylinder and piston assembly.
Procedures for removing, disassembling, and checking starter and magneto components.
Instructions for removing and checking balancer and oil pump gears.
Procedures for removing, checking, and installing the radiator and fan.
Instructions for checking and installing the thermostat and its housing.
Procedures for removing, disassembling, checking, and assembling the water pump.
Steps for removing, disassembling, checking, and assembling the carburetor.
Lists common symptoms and possible causes for drive train issues.
Procedures for removing, disassembling, and checking CV joints and differential gear.
Instructions for removing, disassembling, and assembling rear drive components.
Procedures for removing, checking, and installing front wheels and brake discs.
Instructions for removing, checking, and installing rear wheels and brake discs.
Covers procedures for front and rear brake pads, master cylinders, and calipers.
Identification of various electrical components with a circuit diagram.
Methods for checking switch continuity and terminal connections.
Procedures for checking bulb condition, types, and continuity.
Circuit diagram and troubleshooting for the ignition system.
Circuit diagram and troubleshooting for the electric starting system.
Circuit diagram and troubleshooting for the charging system.
Circuit diagram and troubleshooting for headlights and taillights.
Circuit diagram and troubleshooting for various indicator and warning lights.
Circuit diagram and troubleshooting for the cooling fan motor and thermo switch.
Circuit diagram and troubleshooting for the 2WD/4WD selection system.
Lists possible causes for engine starting issues related to fuel, electrical, and carburetor systems.
Identifies issues affecting engine idle speed, related to carburetor and electrical systems.
Troubleshooting for issues affecting engine performance at medium and high speeds.
Symptoms and causes of damage or malfunction in shaft drive components.
Common problems and potential causes for gear shifting issues.
Issues related to engine operation but no movement, clutch slipping, and starting performance.
Potential causes for engine overheating related to ignition, fuel, and cooling systems.
Common causes for poor braking effect.
Identifies issues related to bent damper rods or fatigued springs.
Factors affecting handling, including tires, wheels, steering, and frame.
Troubleshooting for dark headlights and burnt-out bulbs.
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