Target User:
Recreational riders, utility users, farm work
Competitors:
Honda FourTrax 350, Suzuki QuadSport Z400, Kawasaki Bayou 300
Features:
Reliable, torquey engine, comfortable riding position, robust suspension, selectable 2WD/4WD (depending on sub-model)
Engine:
Complete engine overhaul, troubleshooting, diagnosis, performance tuning
Fuel System:
Carburetor disassembly, cleaning, adjustment, fuel pump, fuel lines
Transmission:
Clutch, gearbox, final drive, lubrication, repair
Electrical System:
Ignition system, lighting, battery, charging system, starter, wiring diagrams
Chassis And Frame:
Frame inspection, steering, suspension, wheels, hubs
Braking System:
Front and rear brake caliper service, hydraulic system, bleeding, pad replacement
Cooling System:
Radiator, fan, coolant, hoses, thermostat (if applicable)
Exhaust System:
Muffler, exhaust pipes, gaskets, inspection
Body And Trim:
Body panel removal, installation, seat, fenders, handlebars
Maintenance:
Regular service checks, lubrication, filter changes, spark plug replacement
Troubleshooting:
Diagnostic flowcharts, common problem identification and solutions
Repair:
Step-by-step repair instructions for all major components
Rebuild:
Comprehensive engine and transmission rebuild procedures
Installation:
Instructions for accessory installation and component replacement
Depth:
Factory-level diagnostic procedures, detailed torque specifications, electrical schematics
Engine Displacement:
348cc
Engine Bore X Stroke:
83mm x 64.5mm
Engine Configuration:
Air-cooled, 4-stroke, SOHC, 2-valve
Engine Compression Ratio:
8.7:1
Engine Power:
Approximately 19 hp @ 5500 rpm (estimated, factory figures vary)
Engine Torque:
Approximately 20 lb-ft @ 4500 rpm (estimated)
Fuel Delivery:
Mikuni BNS32 carburetor
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Oil Type:
Yamalube 4 (or equivalent) SAE 20W-40 API SG or higher
Oil Capacity:
1.9 L (2.0 US qt) with oil filter change
Ignition System:
CDI (Capacitor Discharge Ignition)
Spark Plug:
NGK CR7E (or equivalent)
Cooling Method:
Air-cooled
Transmission Type:
Constant mesh, 5-speed semi-automatic with reverse
Clutch Type:
Wet, multiple-disc
Drive Type:
Shaft drive to rear wheels, optional 4WD system
Gear Ratios:
Refer to manual for specific gear ratios
Transmission Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG
Transmission Oil Capacity:
0.8 L (0.85 US qt)
Safety Standards:
Manufactured to meet relevant ATV safety standards of the time.
Braking System:
Hydraulic disc brakes front and rear
Lighting:
Dual 30W headlights, 8W taillight/stoplight
Controls:
Handlebar steering with comfortable grips
Engine Oil Change:
Every 1,000 km (600 miles) or 6 months
Air Filter Cleaning:
Every 500 km (300 miles) or 3 months
Spark Plug Replacement:
Every 5,000 km (3,000 miles) or 24 months
Valve Clearance Check:
Every 5,000 km (3,000 miles) or 24 months
Brake Fluid Check:
Every 1,000 km (600 miles) or 6 months
Engine Oil:
Yamalube 4 (or equivalent) SAE 20W-40 API SG
Transmission Oil:
Yamalube 4 (or equivalent) SAE 10W-40 API SG
Brake Fluid:
DOT 3 or DOT 4
Coolant:
Not applicable (air-cooled)
Common Problems:
Carburetor clogging due to fuel varnish, occasional starter motor issues, wear on suspension bushings
Preventative Measures:
Regular fuel stabilizer use, consistent maintenance schedule, proper storage
Manufacturer:
Yamaha Motor Corporation is a Japanese manufacturer of motorcycles, marine products, and other motorized products.
Predecessors:
The Wolverine line evolved from Yamaha's earlier ATV models, building on proven engine and chassis designs.
Updates:
The 2001 model year saw refinements over previous iterations, focusing on reliability and user comfort.
Production Period:
The YFM350 Wolverine was produced for several years, with the 2001 model being a part of its established production run.