Positioning:
The Yamaha Wolverine 350 was positioned as a capable and reliable utility ATV, appealing to recreational riders and light-duty work tasks.
Competitors:
Competed with models from Honda (e.g., TRX 350), Suzuki (e.g., QuadRunner 300/350), and Kawasaki (e.g., Bayou 300).
Features:
Known for its torquey 348cc air-cooled engine, comfortable seating, independent front suspension, and shaft drive. Offered a blend of performance and usability.
Value Proposition:
This manual provides essential information for owners to perform routine maintenance, troubleshoot issues, and carry out repairs, saving significant costs associated with dealership service.
Engine:
Detailed disassembly, assembly, inspection, diagnosis, and repair of the engine and its components.
Fuel System:
Carburetor tuning, cleaning, overhaul, fuel pump, fuel lines, and fuel tank maintenance.
Transmission:
Clutch operation, inspection, adjustment, and replacement; gearbox maintenance.
Drive Train:
Shaft drive system inspection, maintenance, and repair; differential.
Brakes:
Hydraulic system inspection, fluid replacement, pad/shoe replacement, caliper/master cylinder servicing.
Suspension:
Front and rear suspension inspection, component replacement (shocks, bushings), alignment checks.
Steering:
Steering system inspection, tie rod ends, steering linkage maintenance.
Electrical System:
Battery, charging system (stator, regulator/rectifier), ignition system (CDI, spark plug), lighting, and starter system.
Cooling System:
Air-cooled engine, detailing fin cleaning and heat dissipation.
Frame And Bodywork:
Chassis inspection, plastic component removal/installation, seat, fenders, and handlebars.
Wheels And Tires:
Tire pressure, inspection, and replacement; wheel bearing maintenance.
Scheduled Maintenance:
Oil changes, filter replacements, spark plug checks, air filter cleaning/replacement, valve adjustments, lubrication points.
Troubleshooting:
Diagnostic flowcharts, common problem identification, and step-by-step solutions for various issues.
Disassembly And Assembly:
Complete tear-down and reassembly instructions for major components.
Rebuilds:
Engine, carburetor, and brake system rebuild procedures.
Adjustments:
Carburetor idle and mixture, throttle cable, brake levers, and valve clearances.
Testing And Calibration:
Ignition timing checks, electrical component testing.
Depth:
Comprehensive, covering everything from basic fluid checks to complete engine rebuilds and electrical system diagnostics.
Diagnostic Tools:
May include basic electrical testing procedures requiring multimeter, but no specialized electronic diagnostic tools.
Engine Type:
Four-stroke, SOHC, air-cooled
Displacement:
348 cc (21.2 cubic inches)
Bore X Stroke:
80.0 mm x 69.6 mm (Approximate, based on similar Yamaha engines of the era)
Compression Ratio:
9.2:1 (Typical for this engine configuration)
Horsepower:
Approximately 20-25 HP (Estimated, actual figures can vary)
Torque:
Strong low-end torque, suitable for utility tasks.
Carburetor:
Mikuni BS34 (Single Carburetor, likely with accelerator pump)
Fuel Type:
Unleaded gasoline
Ignition System:
CDI (Capacitor Discharge Ignition)
Oil Type:
Yamalube 4 (or equivalent API SG, SAE 20W-40 or 10W-30 depending on temperature)
Starter System:
Electric Starter
Length:
Approximately 73.0 inches (1855 mm)
Width:
Approximately 42.7 inches (1085 mm)
Height:
Approximately 43.5 inches (1105 mm)
Dry Weight:
Approximately 465 lbs (211 kg)
Fuel Capacity:
Approximately 3.2 gallons (12 liters)
Front Tire Size:
AT25x8-12 (Example, may vary by trim)
Rear Tire Size:
AT25x10-12 (Example, may vary by trim)
Wheelbase:
Approximately 49.0 inches (1245 mm)
Ground Clearance:
Approximately 10.0 inches (254 mm)
Atv Safety:
ATVs are inherently high-risk vehicles. Users must wear appropriate safety gear, including helmets, eye protection, gloves, and protective clothing. This manual covers mechanical safety but not operational safety protocols, which are typically in the owner's manual.
Features:
Front hydraulic disc brakes, rear sealed drum brake, engine braking via transmission.
Features:
Durable chassis, comfortable seating position for stability.
Engine Oil Change:
Every 600 miles (1000 km) or 6 months, whichever comes first. Also, check oil level weekly or every 10 hours.
Air Filter Cleaning:
Clean every 600 miles (1000 km) or 6 months. Replace if damaged.
Spark Plug Check:
Check every 600 miles (1000 km) or 6 months. Adjust gap or replace as needed.
Valve Clearance Adjustment:
Check and adjust every 1,200 miles (2000 km) or 12 months.
Brake Fluid Replacement:
Replace every 12 months or as needed based on condition.
Lubrication:
Lubricate throttle cable, brake levers, shift lever, and suspension linkages every 600 miles (1000 km).
Engine Oil Capacity:
1.75 L (1.85 US qt) without filter change; 1.90 L (2.01 US qt) with filter change.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Final Drive Oil Type:
SAE 80W hypoid gear oil.
Common Problems:
Carburetor issues (clogging, difficult starting), starter motor wear, occasional electrical component failures (regulator/rectifier), suspension bushing wear.
Preventative Maintenance:
Regular cleaning of the air filter, proper fuel storage, and adherence to lubrication schedules can mitigate many common issues.
Heritage:
Yamaha has a long and successful history in powersports, known for engineering robust and reliable off-road vehicles.
Evolution:
The Wolverine line has been a staple in Yamaha's ATV lineup, evolving through various engine sizes and feature sets. The 350cc model provided a mid-range option balancing power and maneuverability.
Production Years:
The Wolverine 350 was produced for several years, with the 2004 model representing a refinement of the platform.
Manufacturing Location:
Yamaha ATVs are typically manufactured in Japan or the United States.
