Category:
Mid-size Utility ATV
Target Audience:
Recreational riders, utility users, and DIY mechanics.
Competitors:
Honda TRX350, Suzuki LT-F300 King Quad, Kawasaki Bayou 300.
Powertrain Durability:
Known for its robust and reliable engine and drivetrain.
Versatility:
Suitable for various terrains and riding conditions.
Ease Of Maintenance:
Designed for relatively straightforward maintenance by owners.
Applicable Years:
2003, 2004, 2005, 2006, 2007, 2008, 2009
Estimated Pages:
Hundreds (specific number not provided, but typical for comprehensive service manuals)
Type:
Service Repair Manual
Format:
PDF (Downloadable)
Engine:
Comprehensive coverage including disassembly, assembly, troubleshooting, diagnostics, tuning, and component replacement.
Transmission:
Detailed information on gearbox operation, maintenance, and repair procedures.
Drivetrain:
Coverage for shaft drive, differential, and related components.
Suspension:
Front and rear suspension systems, including shock absorbers, springs, control arms, and bushings.
Brakes:
Front and rear braking systems, including hydraulic lines, calipers, master cylinders, and brake pads/shoes.
Electrical System:
Wiring diagrams, ignition system, charging system, lighting, starter, and troubleshooting of electrical faults.
Fuel System:
Carburetor assembly, fuel pump, fuel lines, and tank maintenance.
Cooling System:
Radiator, fan, thermostat, and coolant flow.
Exhaust System:
Muffler, exhaust pipe, and gasket replacement.
Chassis Frame:
Frame inspection, component mounting, and alignment.
Bodywork Plastics:
Panel removal, installation, and care of plastic body components.
Steering:
Steering column, tie rods, and steering linkage maintenance.
Maintenance:
Regular servicing, lubrication, filter changes, and inspections.
Troubleshooting:
Diagnostic flowcharts and common problem resolution for various systems.
Repair:
Step-by-step instructions for component removal, repair, and reinstallation.
Rebuilding:
Comprehensive guidance for overhauling major components like the engine and transmission.
Restoration:
Guidance for bringing the vehicle back to original specifications.
Technical Adjustments:
Carburetor tuning, idle speed adjustments, and clutch adjustments.
Depth:
Full mechanical and electrical repair, including detailed diagrams and specifications.
Engine Type:
4-stroke, SOHC, air-cooled
Bore X Stroke:
83 mm x 64.5 mm
Carburetion:
Mikuni BSR33/1 (single carburetor)
Horsepower Est:
Approximately 20-22 HP (at flywheel, specific dyno data may vary)
Torque Est:
Approximately 18-20 lb-ft (at flywheel, specific dyno data may vary)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Fuel Tank Capacity:
3.6 L (0.95 US gal), including reserve
Ignition System:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Air-cooled
Length:
Approx. 1990 mm (78.3 in)
Width:
Approx. 1095 mm (43.1 in)
Height:
Approx. 1155 mm (45.5 in)
Wheelbase:
Approx. 1280 mm (50.4 in)
Dry Weight:
Approx. 213 kg (470 lbs)
Wet Weight Est:
Approx. 220 kg (485 lbs) (with fluids)
Front Rack Capacity Est:
Approx. 45 kg (99 lbs)
Rear Rack Capacity Est:
Approx. 85 kg (187 lbs)
Front Tire Size:
AT25 x 8-12
Rear Tire Size:
AT25 x 10-12
Initial Break In:
Refer to manual for specific break-in procedures (typically first 10-20 hours).
Engine Oil Change:
Every 100 hours or annually (refer to manual for exact mileage/time).
Air Filter Cleaning:
Every 20 hours or more frequently in dusty conditions.
Spark Plug Replacement:
Refer to manual, typically every 2,000-3,000 miles or annually.
Differential Oil Change:
Every 200 hours or annually.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher, JASO MA compliant.
Engine Oil Capacity:
1.7 L (1.8 US qt) without filter change, 1.8 L (1.9 US qt) with filter change.
Final Drive Oil Type:
Yamalube SAE 80 API GL-4 hypoid gear oil.
Final Drive Oil Capacity:
0.13 L (0.14 US qt)
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Carburetor Fouling:
Common issue with gumming if fuel sits for extended periods; requires cleaning or rebuild.
Starter Clutch Wear:
Can wear over time, leading to slipping or failure to engage the starter motor.
Reverse Gear Engagement:
Occasionally reported issues with the reverse mechanism if not maintained properly.
Suspension Bushings:
Wear on A-arm bushings can lead to play and alignment issues.
Manufacturer:
Yamaha Motor Corporation
Founding:
1955 (motorcycle division)
Predecessor:
Yamaha Timberwolf 250
Design Philosophy:
Yamaha's focus on reliable, capable, and user-friendly ATVs.
Production Period:
The Wolverine 350 model line was produced across several years, with this manual covering the 2003-2009 iteration.
Manufacturing Location:
Primarily Japan and potentially other Yamaha global manufacturing facilities.
