Model:
YFM400 Kodiak 4x4 / YFM350 Bruin 4x2
Model Years Covered:
2004, 2005, 2006, 2007, 2008
Chassis Codes:
YFM400F (Kodiak 4x4), YFM350X (Bruin 4x2)
Target Audience:
ATV owners, DIY mechanics, professional service technicians
Value Proposition:
Provides comprehensive, reliable repair information for extended vehicle lifespan and cost-effective maintenance
Benefits:
Instant access, printable pages, oil-resistant usability, instant repair capability
Lifetime Policy:
Lifetime protection/replacement policy for lost or damaged downloads
Applicable Models:
2004-2008 Yamaha YFM400 Kodiak 4x4 ATV, 2004-2008 Yamaha YFM350 Bruin 4x2 ATV
Manual Scope:
Comprehensive repair and maintenance
Estimated Page Count:
Likely 300-500 pages (typical for this type of ATV service manual)
Type:
Repair Manual / Service Manual / Workshop Manual
Engine:
Detailed engine disassembly, assembly, inspection, and repair (including top-end, bottom-end, cooling, lubrication)
Fuel System:
Carburetor tuning, cleaning, rebuilding, fuel pump, fuel lines, fuel tank service
Transmission Drive:
Clutch operation, gearbox disassembly and assembly, drive shaft, differential, chain and sprocket maintenance
Electrical System:
Wiring diagrams, ignition system, charging system (stator, regulator/rectifier), starter motor, battery maintenance, lighting, switches
Suspension Steering:
Front and rear shock absorber service, suspension linkage, steering column, tie rods, wheel alignment
Braking System:
Brake caliper service, master cylinder repair, brake fluid flush, brake pad replacement, rotor inspection
Bodywork Chassis:
Frame inspection, body panel removal and installation, seat, fenders, rack maintenance
Cooling System:
Radiator service, fan operation, coolant type and capacity
Lubrication System:
Oil type, capacity, filter specifications, lubrication points
Maintenance:
Routine maintenance checks, oil changes, filter replacements, spark plug service, valve adjustments
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides
Repair:
Step-by-step instructions for component repair and replacement
Rebuilds:
Detailed procedures for engine and transmission overhauls
Installation:
Engine and transmission removal/installation procedures
Diagnostic Capabilities:
Advanced troubleshooting for electrical and mechanical issues
Rebuild Detail:
Full rebuild specifications for major components
Special Tools:
Identification of specialized tools required for certain procedures
Engine Type Yfm400:
333cc, 4-stroke, SOHC, air-cooled, single-cylinder
Engine Type Yfm350:
348cc, 4-stroke, SOHC, air-cooled, single-cylinder
Bore X Stroke Yfm400:
74.0 mm x 77.0 mm
Bore X Stroke Yfm350:
83.0 mm x 64.5 mm
Compression Ratio Yfm400:
9.2:1
Compression Ratio Yfm350:
9.2:1
Horsepower Yfm400:
Approximately 21-23 HP (estimated, exact figures often not published)
Horsepower Yfm350:
Approximately 20-22 HP (estimated, exact figures often not published)
Carburetor Type Yfm400:
Teikei Y26PH (or similar)
Carburetor Type Yfm350:
Teikei Y30PH (or similar)
Fuel Type:
Unleaded gasoline
Display Features:
Digital meter with speedometer, odometer, trip meter, fuel gauge, clock, 4WD indicator
Efi:
No Electronic Fuel Injection (EFI); utilizes carburetor
Throttle Limiter:
No electronic throttle control or governor beyond mechanical limits
Engine Oil Change:
Every 100 hours or 12 months, whichever comes first (refer to manual for specifics)
Air Filter Cleaning:
Every 20 hours or as needed based on conditions
Spark Plug Inspection:
Every 100 hours or 12 months
Valve Adjustment:
Every 200 hours or 24 months
Engine Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SG or higher)
Engine Oil Capacity:
Approx. 1.7-1.8 liters (with filter change)
Final Drive Oil Type:
Yamalube Gear Oil (or equivalent SAE 80 API GL-4)
Coolant Type:
Permanent type antifreeze coolant (50/50 mixture with distilled water)
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid
Common Wear Items:
Brake pads, tires, wheel bearings, suspension bushings, drive belts (YCVT)
Potential Electrical:
Voltage regulator failure, stator winding issues (less common but possible)
Carburetor Issues:
Clogging due to stale fuel, pilot jet issues affecting idle
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for producing reliable and capable ATVs, dating back to the early days of the industry.
Kodiak Lineage:
The Kodiak line has historically been positioned as a robust, utility-focused ATV, known for its comfort and capability in varied terrain.
Bruin Lineage:
The Bruin was introduced as a slightly smaller, more nimble option often appealing to a broader range of riders, while still offering solid utility.
Manufacturing Location:
Likely manufactured in Japan or North America
