2002-2008 Yamaha ATV YF660FP Service Manual

2002–2008 Yamaha YFM660FP ATV Maintenance Scope

• Covers 2002–2008 Yamaha YFM660FP ATVs with liquid-cooled 660 cc 4-stroke engines and V-belt automatic transmissions
• Official Yamaha publication P/N LIT-11616-15-01, Form 5KM-28197-E0
• Contains 407 pages of technical data including torque tables, wiring schematics, and fluid-capacity charts
• Accessible from your device as soon as the order is placed
• Suitable for printing individual sections for shop-floor use
• This official service publication serves as the primary technical reference for the YFM660FP Grizzly series, detailing all periodic maintenance procedures, engine overhauls, and electrical diagnostics necessary for keeping the vehicle in operating condition.

Component and System Documentation

This 407-page document organizes information into ten dedicated chapters. Major topics include general information and identification codes, detailed specifications for the engine and chassis, and systematic periodic maintenance and lubrication intervals. Engine coverage spans the cylinder head, camshaft, valves, pistons, recoil starter, primary and secondary sheaves, and crankcase assembly. The drivetrain section explains the operation and maintenance of the front differential with 4WD and Diff-Lock modes, along with rear final drive components. Chassis documentation includes front and rear brake disc procedures, steering system adjustments, and suspension settings.

Technical Specification Preview

This publication provides detailed reference values for components across the entire machine. Cylinder head bolt torque values are documented at 38 Nm, while spark plug installation is specified at 18 Nm. The engine idle speed is listed at 1,450–1,550 r/min in the engine specifications table. Cooling system capacity is documented at 1.8 liters total including all routes. Electrical reference values for the ignition coil secondary winding resistance are specified at 6.32–9.48 k-ohms at 20°C. For technicians evaluating how factory workshop documentation is structured, the manual includes fluid, torque, and clearance data for all key assemblies. Reference only — always consult a certified technician before performing service on this equipment. This official 407-page Yamaha OEM workshop manual covers the 2002–2008 YFM660FP, documenting engine, chassis, electrical, and drivetrain specifications for this four-wheel drive ATV build.