Category:
Sport/Utility ATV
Target Audience:
Recreational riders, off-road enthusiasts, and farm/ranch utility users.
Competitors 2002:
Honda FourTrax 350, Suzuki QuadSport 300, Kawasaki Bayou 300, Polaris Sportsman 400.
Vehicle Focus:
Reliability, versatility, and moderate performance for trail riding and utility tasks.
Manual Value:
Provides essential information for maintaining and repairing the 2002 Wolverine 350, saving on dealership service costs and empowering owners with knowledge.
Engine:
Complete engine overhaul, including top-end (cylinder, piston, valves), bottom-end (crankshaft, connecting rod, bearings), lubrication system, cooling system, and starting system.
Fuel System:
Carburetor disassembly, cleaning, adjustment, and troubleshooting; fuel pump operation and inspection; fuel tank and lines.
Transmission:
5-speed transmission with reverse: gearbox disassembly, gear inspection, clutch operation and adjustment, torque converter (if applicable), and drive shaft maintenance.
Drivetrain:
Shaft drive system, differential assembly, CV joints, and wheel hub maintenance.
Suspension:
Front and rear suspension components, including A-arms, shocks, springs, bushings, and wheel bearings. Adjustment and replacement procedures.
Brakes:
Hydraulic brake system: front and rear brake caliper service, brake pad replacement, brake line inspection, master cylinder service, and bleeding procedures.
Electrical System:
Ignition system (CDI, spark plug), lighting system (headlights, taillights, brake lights), battery maintenance and testing, charging system (stator, regulator/rectifier), starter motor, and basic wiring diagrams.
Chassis And Body:
Frame inspection, body panel removal and installation, seat, handlebars, and fender maintenance.
Cooling System:
Air-cooled engine design, but covers any associated fan or ducting components for optimal heat dissipation.
Maintenance:
Regular scheduled maintenance: oil changes, filter replacements, spark plug service, air filter cleaning, chain/drive shaft lubrication, and general inspection.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon problems, covering starting issues, poor running conditions, electrical faults, and braking problems.
Repair:
Step-by-step instructions for component repair and replacement, from minor adjustments to complete engine and transmission rebuilds.
Disassembly Assembly:
Detailed breakdown and reassembly of all major vehicle systems and components.
Specifications And Tolerances:
Critical measurements, torque specifications, valve clearances, and operational tolerances for accurate assembly and performance.
Technical Illustrations:
Detailed diagrams, exploded views, and schematics to guide repair processes.
Wiring Diagrams:
Essential electrical system wiring diagrams for troubleshooting and repair.
Depth:
Comprehensive, covering everything from basic rider maintenance to advanced mechanical repairs and diagnostics suitable for professional mechanics and experienced DIY enthusiasts.
Engine Type:
4-stroke, SOHC, air-cooled
Engine Displacement:
348 cc (21.2 cu. in.)
Bore X Stroke:
83 mm x 64.5 mm (3.27 in. x 2.54 in.)
Horsepower:
Approx. 20.7 HP @ 6,500 RPM (Estimated)
Torque:
Approx. 20.3 lb-ft @ 5,500 RPM (Estimated)
Carburetor Type:
Mikuni BSR33/1, 1x constant velocity (CV) carburetor
Fuel Tank Capacity:
3.3 U.S. gal (12.5 L), including 0.7 U.S. gal (2.7 L) reserve
Oil Type Specification:
Yamalube 4 (or equivalent API SG, SAE 10W-40) air-cooled 4-stroke motor oil
Oil Capacity:
1.90 US qt (1.8 L) without filter change, 2.00 US qt (1.9 L) with filter change
Engine Oil Change:
Every 1,000 km (600 miles) or 6 months.
Air Filter Cleaning:
Every 3 months or 20 hours of operation, more frequently in dusty conditions.
Spark Plug Replacement:
Every 6 months or 500 km (300 miles).
Valve Clearance Check:
Every 6 months or 500 km (300 miles).
Engine Oil Grade:
SAE 10W-40 API SG or higher
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid
Grease Type:
Lithium-based multipurpose grease (e.g., Yamalube Grease A)
Common Wear Items:
Brake pads, wheel bearings, swingarm bushings, ball joints, and drive shaft U-joints.
Carburetor Tuning:
Carburetors can require occasional cleaning and adjustment due to fuel variability and usage conditions.
Engine Performance Degradation:
Can be caused by worn piston rings, valve seat issues, or carbon buildup if not maintained properly.
Manufacturer:
Yamaha Motor Corporation, established in 1955, known for motorcycles, marine products, and powersports vehicles.
Wolverine Lineage:
The Wolverine line has a history of providing capable and reliable ATVs. The 350 model represented a significant step in Yamaha's 2WD utility ATV offerings.
Production Years Wolverine 350:
Approximately 1995-2005 (with variations in specific features and designations like Big Bear).
Manufacturing Location:
Primarily Japan and/or United States.
