1999 Yamaha YFM400FWAM / YFM400FWAMC ATV Service & Repair Manual (P/N LIT-11616-13-21)
374 Pages • 12.93 MB • Instant, Printable PDF
Yamaha Models Covered & Key Technical Specifications
Models: Yamaha YFM400FWAM, Yamaha YFM400FWAMC
Sub-models / Variants: Kodiak 400 4WD, 4-stroke liquid-cooled single-cylinder, V-belt automatic transmission
Model Years: 1999
Technical Data:
- Engine: 401 cc liquid-cooled 4-stroke, SOHC, forward-inclined single cylinder
- Bore x Stroke: 84.5 mm x 71.5 mm
- Compression Ratio: 10.5:1
- Transmission Type: V-belt automatic with sub-transmission (low/high) and reverse
- Final Drive: Shaft drive with differential gear
- Braking System: Dual disc front, single disc rear
- Suspension: Front double wishbone, rear swingarm (monocross)
- Tire Size: Front AT25x8-12, Rear AT25x10-12
- Electrical System: 12 V, C.D.I. ignition, A.C. magneto generator, 12 V 18 AH battery
Yamaha Manual Features & Content Preview
- Covers 1999 Yamaha YFM400FWAM and YFM400FWAMC Kodiak 400 4WD models featuring the 401cc liquid-cooled single-cylinder engine and V-belt automatic transmission
- Official Yamaha publication P/N LIT-11616-13-21, first edition April 1999
- Contains 374 pages of technical content, including detailed exploded-view diagrams, extensive tightening torque tables, and wiring schematics for complex electrical repair work
- Serves as the primary factory reference for the initial Kodiak 400 4WD build, detailing specifications specific to the 5GH1, 5GH2, 5GH6, and 5GH7 model codes
What the Yamaha YFM400FWAM Documents
This factory-authorized manual delivers comprehensive maintenance and repair documentation for the Kodiak series. It covers everything from basic upkeep schedules to complete engine tear-downs. Chapters break down cooling system management, carburetion tuning, chassis geometry, and electrical diagnostics for the 401cc powerplant. Technicians will appreciate the structured layout when navigating the drivetrain, which details the V-belt transmission, middle gear, and final axle assembly. Each section integrates clear component identification. This helps streamline bench work. Please be aware that handling high-pressure cooling systems and heavy drivetrain components requires proper shop safety protocols and protective gear at all times.
Specification Highlights
The 1999 manual lists precise technical values essential for restoring vehicle health. Standard cylinder head bolt torque sits at 40 Nm (29 ft-lb) in the maintenance table. Valve clearance for the intake is strictly defined at 0.06–0.10 mm. Engine idle speed demands a tight window of 1,450–1,550 r/min. The cooling system holds exactly 1.1 liters. On the electrical side, reference values include a 30 A main fuse rating. All torque specifications are called out in Nm, m-kg, and ft-lb for standard fasteners. As an official 374-page OEM workshop resource, it provides the definitive chassis, electrical, and drivetrain specifications necessary for servicing the Kodiak 400 4WD build.
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