Market Position:
The Yamaha Wolverine 350 was positioned as a capable and reliable mid-size utility ATV, offering a blend of performance and versatility for recreational and light-duty work. It appealed to riders looking for a step up from smaller ATVs without the complexity or expense of larger, more specialized models.
Competitive Analysis:
Competed with models like the Honda FourTrax 350, Suzuki King Quad 300/350, and Kawasaki Bayou 300/360, offering similar engine sizes and utility features. Differentiated by Yamaha's reputation for reliability and specific chassis tuning.
Key Features:
Robust chassis, comfortable suspension, reliable engine, selectable 2WD/4WD (depending on sub-model), ample cargo carrying capacity.
Model Years Covered:
2003, 2004, 2005, 2006, 2007, 2008, 2009
Model Variants Covered:
All Models
Estimated Page Count:
Extensive (Detailed Service Manual)
Manual Type:
Workshop Manual / Service Repair Manual
Engine Systems:
Engine overhaul, top-end repair, bottom-end repair, valve train, piston and connecting rod, crankshaft, cylinder block, lubrication system, cooling system, fuel system, ignition system, starting system, charging system
Transmission And Drivetrain:
Transmission overhaul, gear shifting mechanisms, final drive, driveshafts, differential
Chassis Systems:
Frame, suspension (front and rear), steering system, wheels and tires
Braking System:
Brake system maintenance, front and rear brake caliper service, brake pad replacement, brake fluid, brake line inspection and replacement
Electrical System:
Wiring diagrams, battery, starting system, charging system, ignition system, lighting system, instrumentation, sensors, fuses and relays
Fuel System:
Carburetor service and adjustment, fuel pump, fuel lines, fuel tank
Cooling System:
Radiator, fan, coolant, water pump
Body And Frame:
Body panels, fenders, seat, handlebars, controls, skid plates
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, lubrication, chain adjustment, battery maintenance, brake checks, tire pressure checks
Troubleshooting:
Diagnostic procedures, common problems and solutions, symptom-based troubleshooting guides
Repair Procedures:
Step-by-step repair instructions for all major and minor components, engine rebuild, transmission repair, suspension overhaul, electrical diagnostics and repair
Diagnostic Procedures:
Fault finding, testing of components, electrical system diagnostics
Technical Depth:
Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed specifications and torque values.
Target Audience:
Professional Technicians and Advanced DIY Mechanics
Engine Type:
4-stroke, SOHC, air-cooled, 2-valve
Bore X Stroke:
83.0 mm x 64.5 mm
Carburetion:
Mikuni BSR33/1 (single carburetor)
Estimated Horsepower:
Approximately 21-23 HP (varies by sub-model and tuning)
Estimated Torque:
Approximately 20-22 lb-ft
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approximately 3.2 US gallons (12.1 Liters)
Ignition System:
CDI (Capacitor Discharge Ignition)
Starting System:
Electric Start
Length:
Approximately 74.4 inches (1890 mm)
Width:
Approximately 40.2 inches (1020 mm)
Height:
Approximately 41.1 inches (1045 mm)
Wheelbase:
Approximately 48.5 inches (1230 mm)
Ground Clearance:
Approximately 8.3 inches (211 mm)
Dry Weight:
Approximately 460 lbs (209 kg)
Wet Weight:
Approximately 483 lbs (219 kg)
Front Rack Capacity:
Approximately 45 kg (99 lbs)
Rear Rack Capacity:
Approximately 85 kg (187 lbs)
Safety Ratings:
ATVs are not subject to the same crash test ratings as passenger vehicles. Safety is primarily dependent on proper operation, rider skill, and maintenance.
Active Safety Features:
Reliable braking system, intuitive controls, stable chassis design for its class.
Passive Safety Features:
Rollover protection (rider awareness required), integrated bodywork designed for rider protection.
Oil Change Interval:
Recommended every 100 hours or annually, whichever comes first (refer to manual for specific details).
Air Filter Cleaning:
Check and clean every 50 hours or as needed, depending on operating conditions.
Spark Plug Replacement:
Recommended every 200 hours or annually.
Valve Adjustment:
Recommended every 200 hours or annually.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher
Engine Oil Capacity:
Approximately 2.6 US quarts (2.5 Liters) with filter change
Gear Oil Type:
Yamalube Gear Oil (or equivalent) 80W SAE 80
Gear Oil Capacity:
Refer to manual for specific capacities (front and rear differentials).
Brake Fluid Type:
DOT 3 or DOT 4
Known Issues:
Common issues can include carburetor gumming if not run regularly, potential wear on suspension components over time, and occasional electrical connection issues if exposed to excessive moisture. The manual addresses these comprehensively.
Brand Heritage:
Yamaha has a long-standing reputation for building high-quality, reliable, and performance-oriented powersports vehicles, including motorcycles, snowmobiles, and ATVs. This heritage informs the design and engineering of the Wolverine series.
Model Evolution:
The Wolverine 350 (often referred to as the Big Bear 350 in earlier iterations or related models) represented Yamaha's commitment to the utility ATV market. It evolved from earlier single-cylinder designs, incorporating advancements in suspension and drivetrain for improved comfort and capability.
Production Period:
The Wolverine 350 platform was produced for a significant period, with the 2003-2009 model years representing a specific generation known for its robust engineering.
