2007–2008 Yamaha Grizzly 400, YFM4FG ATV Service Manual (P/N LIT-11616)

• Official Yamaha P/N LIT-11616-series publication for 2007–2008 Grizzly 400 (YFM4FG) ATV variants
• Details the 5TE-series chassis build alongside the liquid-cooled 401cc SOHC engine and V-belt automatic transmission
• Includes 457 pages of factory reference material, featuring cooling system flow diagrams, detailed cable routing maps, and complete torque charts
• Covers the Mikuni BSR33 carburetor, constant velocity joints, steering knuckles, brake master cylinders, water pump, recoil starter, A.C. magneto, and monocross swingarm
• Features essential visual aids including wiring diagrams, oil flow diagrams, exploded diagrams, electrical schematics, component views, maintenance specification charts, gear lash measurement views, and lubrication charts

Technical and Maintenance Documentation

This digital PDF factory reference provides a deep dive into the 2007 and 2008 Grizzly 400. It breaks down machine maintenance, engine assembly, and chassis configuration into logical, manageable sections. Streamlining bay efficiency, the manual provides factory-approved teardown sequences that prevent unnecessary parts replacement. Professional mechanics and DIYers can avoid expensive dealership visits by following the step-by-step procedures for complex tasks, such as overhauling the carburetor, rebuilding constant velocity joints, and bleeding the hydraulic brake system. Need to execute a top end repair? Detailed chapters cover the liquid-cooled 401cc engine. You get exact parameters for cylinder head inspection, valve clearance, and timing chain tensioner settings to ensure a reliable repair. The transmission section outlines V-belt replacement alongside secondary sheave maintenance. For electrical work, the coverage spans the ignition system, charging components, and full circuit diagrams for both lighting and signals. Drivetrain sections map out differential gear lash measurement and final drive servicing.

Specification Previews

Precision matters in the shop. Engine compression is documented at a standard 1,400 kPa at 750 r/min. In the cylinder head specification table, intake valve clearance is tightly listed at 0.06 to 0.10 mm. Cylinder head bolt torque values require a multi-stage sequence. Primary bolt tightening maxes out at 40 Nm. You will find specific torque data for hundreds of fasteners throughout the ATV, including the massive 140 Nm nut for the clutch carrier assembly. The documentation also maps out standardized lubrication points. It specifies exactly where to apply Yamaha Bond No. 1215 and high-quality grease for oil seals and O-rings. Ignition timing reference values sit at 10 degrees at 1,500 r/min. When performing any hands-on maintenance, working safely requires verifying all measurements and procedures directly against the complete factory documentation to prevent component damage or injury.