2002-2008 Yamaha Grizzly YFM660F(P) ATV Service & Repair Manual FSM (first edition)

• Covers 2002–2008 Yamaha Grizzly YFM660F(P) ATVs, including the 5KM2, 5KM3, and 5KM4 regional variants with the 660 cm³ liquid-cooled engine
• Official Yamaha publication, first edition May 2001
• Documents the initial 5KM2-AE1 production build, serving as the definitive source reference for all subsequent service work
• Contains 508 pages of exact specifications, exploded-view assembly diagrams, and wire routing instructions

Manual Documentation Overview

This manual breaks down the complete teardown, inspection, and maintenance procedures for the YFM660F chassis, engine, and drive system. Need to diagnose the cooling system? It has dedicated sections for that. The guide fully details the integration of the factory V-belt automatic transmission, 4WD/Diff-Lock modes, and the shift mechanism parking position. You will also find logical, step-by-step chapters covering carburetion settings, chassis adjustments, and thorough electrical system testing. Please remember that working on ATVs involves heavy machinery and combustible fluids. Always follow standard shop safety practices and use the proper lifting equipment before beginning any diagnostic work.

Technical Specification Highlights

Engine assembly and chassis maintenance rely on exact data. This reference provides those critical tables. For instance, the maintenance chart documents the intake valve clearance at 0.10–0.15 mm, while the compression pressure standard sits at 1,324 kPa (188.31 psi) at 850 r/min. Proper assembly is critical. That is why torque values for specific components, like cylinder head bolts and the drive clutch, are explicitly mapped out. You also get exact fluid capacities, such as the 1.8-liter cooling system limit, alongside precise electrical pinout data for the C.D.I. unit.