The Yamaha Wolverine 350, model code YFM350, is a capable and reliable utility ATV produced from 1995 through 2000. This first-generation model was designed as a versatile off-road machine, offering a blend of performance and durability for recreational riding and light to moderate utility tasks. Key features include an automatic transmission, selectable 2WD/4WD, a robust suspension system, and a dependable air-cooled 348cc engine. The Wolverine 350 was positioned to compete effectively in the mid-size utility ATV market, known for its user-friendly operation and strong heritage in powersports.
This comprehensive factory service manual covers the Yamaha Wolverine 350 for the model years 1995-2000. It provides detailed information across a wide range of systems, including engine mechanicals, fuel, lubrication, cooling, ignition, starting, charging, transmission, drivetrain, suspension, steering, brakes, electrical systems, and body panels. The manual outlines routine maintenance procedures, inspection schedules, troubleshooting diagnostics, and step-by-step repair instructions for component removal, installation, and overhaul. It is an essential resource for owners, mechanics, and technicians seeking to maintain, repair, and optimize the performance and longevity of their Wolverine 350.
Generation Name:
1st Generation Wolverine 350
Chassis Code:
Varies by sub-model and region, typically starting with '4X4' for 4WD variants
Market Position:
The Yamaha Wolverine 350 was positioned as a capable and reliable utility ATV, appealing to recreational riders and those needing a workhorse for light to moderate off-road tasks. It offered a blend of performance and durability, competing with models from Honda, Suzuki, and Kawasaki in the mid-size utility ATV segment.
Competitive Analysis:
Competed directly with models like the Honda FourTrax 300/350, Suzuki QuadRunner 300/370, and Kawasaki Bayou 300. The Wolverine 350 often stood out for its capable suspension and a good balance of power and agility.
Key Features:
Automatic transmission, selectable 2WD/4WD, comfortable seating, robust suspension, reliable air-cooled engine.
Coverage Years:
1995, 1996, 1997, 1998, 1999, 2000
Page Count Estimated:
400-600 pages (typical for comprehensive factory service manuals)
Manual Type:
Factory Service Manual / Repair Manual
Format:
PDF (Downloadable)
Covered Systems:
Engine Mechanical, Engine Fuel System, Engine Lubrication, Cooling System, Ignition System, Starting System, Charging System, Transmission, Drivetrain, Suspension, Steering, Braking System, Wheels and Tires, Chassis Components, Electrical System, Lighting, Body Panels, Maintenance Procedures, Troubleshooting Diagnostics
Electrical System Details:
Includes detailed wiring diagrams, component locations, troubleshooting for lighting, ignition, charging systems, and accessories.
Included Procedures:
Routine Maintenance, Inspection, Adjustment, Repair, Overhaul, Troubleshooting, Component Removal and Installation, Wiring Diagram Interpretation, Diagnostic Codes
Suspension Procedures:
Adjustment, repair, and replacement of shocks, springs, bushings, and control arms.
Technical Depth:
Comprehensive (covers everything from basic checks to complete engine and transmission rebuilds, including electrical system diagnostics)
Diagnostic Tools:
While not requiring specialized electronic diagnostic tools, the manual guides the user through logical troubleshooting steps, multimeter usage, and component testing.
Searchable Text:
Yes (Typically, PDFs generated from scanned manuals are not searchable; however, factory-produced digital manuals are.
Printable:
Yes (User can print specific sections or the entire manual)
Print Quality:
High-resolution, clear diagrams and text for easy reading and printing
Binding Type:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Engine Type:
4-stroke, SOHC, air-cooled
Bore X Stroke:
83.0 mm x 64.5 mm
Horsepower Estimated:
Approximately 20-23 hp (varies by specific year and tuning)
Torque Estimated:
Approximately 20-22 lb-ft
Cooling System Type:
Air-cooled with an oil cooler
Fuel System Type:
Carbureted
Carburetor Model:
Mikuni BSR33/BS30 (typically)
Fuel Type:
Unleaded gasoline, 87 octane minimum
Ignition Type:
CDI (Capacitor Discharge Ignition)
Oil Type:
Yamalube 4-stroke motorcycle oil or equivalent SAE 10W-30 or 20W-40 API SG or higher
Oil Capacity With Filter:
Approx. 1.9 L (2.0 US qt)
Transmission Type:
Automatic (Yamaha Constant Velocity Transmission - CV)
Gear Selection:
Forward, Neutral, Reverse
Optional Transmission:
N/A (CVT was standard)
Drivetrain Selection:
2WD/4WD (On-Command 4WD system)
Transmission Fluid Type:
Yamaha recommended ATF Type T-II or equivalent
Overall Length:
Approx. 75.2 inches (1910 mm)
Overall Width:
Approx. 41.1 inches (1045 mm)
Overall Height:
Approx. 41.3 inches (1050 mm)
Dry Weight:
Approx. 520 lbs (236 kg)
Ground Clearance:
Approx. 6.7 inches (170 mm)
Front Rack Capacity:
Approx. 45 kg (99 lbs)
Rear Rack Capacity:
Approx. 85 kg (187 lbs)
Fuel Tank Capacity:
3.7 US gal (14 L)
Front Tire Size:
AT25x8-12
Rear Tire Size:
AT25x10-12
Wheel Bolt Pattern:
4x110 mm
Safety Ratings:
ATVs are not subject to formal crash test ratings like passenger vehicles. However, adherence to manufacturer guidelines and proper riding techniques are crucial for safety.
Active Safety Features:
Engine braking, responsive steering, stable chassis design, selectable 4WD for enhanced traction.
Passive Safety Features:
Ergonomic handlebar design, comfortable seating position, robust frame construction, handguards (on some models).
Safety Warnings:
Always wear a helmet and protective gear, never operate under the influence of alcohol or drugs, read the owner's manual before operation, do not carry passengers unless the ATV is designed for it.
Infotainment Features:
N/A (Utility ATV - basic digital odometer/trip meter)
Driver Assistance Features:
N/A (No electronic driver aids typical for this era/type of vehicle)
Connectivity Features:
N/A
Oil Change Interval:
Every 1000 km (600 miles) or 6 months, whichever comes first. (Refer to manual for exact intervals)
Air Filter Cleaning:
Inspect every 1000 km (600 miles), clean or replace as needed. More frequently in dusty conditions.
Spark Plug Replacement:
Inspect every 1000 km (600 miles), replace as needed. Typically a NGK CR6HSA or equivalent.
Valve Clearance Adjustment:
Every 2000 km (1200 miles) or annually.
Clutch Adjustment:
Inspect and adjust as needed every 1000 km (600 miles).
Coolant Type:
Permanent type antifreeze with a 50/50 mix of ethylene glycol and distilled water.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Final Drive Oil Type:
Yamaha GL-4 Gear Oil or equivalent SAE 80W-90.
Common Issues:
Carburetor gumming (especially if stored with fuel), potential for wear on CVT belt/clutch components, occasional electrical connector corrosion, rear differential seal leaks, stator issues (less common).
Troubleshooting Focus:
The manual provides detailed troubleshooting trees for starting problems, running issues, electrical faults, and drivetrain malfunctions.
Brand Heritage:
Yamaha has a long and distinguished history in powersports, known for innovation, reliability, and performance in motorcycles, ATVs, and watercraft. The Wolverine line built upon this reputation.
Model Evolution:
The Wolverine 350 (YFM350) succeeded earlier Yamaha utility ATVs, offering an evolution in features and performance. It was part of Yamaha's strategy to provide versatile, user-friendly off-road vehicles. It was later succeeded by the Wolverine 350 (YFM350FX) with a shaft drive and different styling, and eventually by other models in the Wolverine lineup.
Powertrain Evolution Notes:
The 348cc engine was a staple for Yamaha in this period, known for its reliability and ease of maintenance.
Production Period:
1995-2005 (approximately, for the 350cc class variants bearing the Wolverine name)
Manufacturing Location:
Primarily manufactured in Japan and/or the United States by Yamaha Motor Corporation.
Industry Recognitions:
While specific awards are not widely documented for this particular model year range, the Wolverine line generally received positive reviews for its performance and reliability in the powersports media of its time.
User Ratings:
Generally favorable user reviews for its durability and capability as a utility ATV.
Certifications:
Meets applicable EPA and CARB emissions standards for its model year.
