2000 Yamaha YFM400FWA(M) Service Manual (P/N 5GH3-AE1)

• Covers the 2000 Yamaha YFM400FWA(M) Kodiak 400 ATV equipped with the liquid-cooled 4-stroke engine and V-belt automatic transmission.
• This 412-page official Yamaha OEM service publication (5GH3-AE1, first edition 2000) serves as the primary technical reference for the YFM400FWA(M) build.
• Contains 56 detailed torque tables, 28 circuit routing diagrams, and 12 engine lubrication flow charts.
• Provides essential clearance, capacity, and tolerance specifications required for professional workshop maintenance.

Technical Documentation Overview

This service manual outlines the exact operational and maintenance requirements for the Kodiak 400. It includes comprehensive chapters on the liquid-cooled engine, carburetion, drive train, chassis components, and electrical systems. Professional mechanics and experienced do-it-yourselfers rely on this documentation for periodic inspections, valve clearance adjustments, timing chain checks, and precise V-belt replacement procedures.

Specification and Reference Values

Extensive technical data supports accurate engine assembly and chassis tuning. For instance, the engine idle speed is documented at 1,450–1,550 r/min, while valve clearance for the intake is listed at 0.06–0.10 mm within the engine specification tables. Crankcase oil capacity requires 2.4 liters during a routine filter replacement. You will also find final gear backlash listed at 0.1–0.2 mm and the cylinder head bolt torque strictly specified at 40 Nm.

Working on ATVs carries inherent physical risks. Always verify these reference values and procedures directly within the original OEM documentation before beginning any hands-on maintenance, tuning, or parts replacement.