Vehicle Type:
ATV (All-Terrain Vehicle)
Engine Type:
4-stroke, SOHC, air-cooled
Chassis Code:
Typically begins with 'JY'
Engine Code:
Not explicitly stated in product info, but typically a variant of the 2KF or 3LP engine family for this era.
Vehicle Segment:
Mid-size utility ATV, known for its versatility and reliability in recreational and light-duty farm use.
Competitors:
Competed with models from Honda (e.g., FourTrax 300/350), Suzuki (e.g., QuadRunner 300), and Kawasaki (e.g., Bayou 300).
Target User:
Designed for recreational riders and those needing a capable, user-friendly ATV for various terrains.
Dv Selling Points:
Emphasis on durability, ease of maintenance, and balanced performance.
Diy Focus:
Explicitly targets the 'do-it-yourselfer' with step-by-step instructions, making complex repairs accessible.
Engine Mechanical:
Detailed disassembly, inspection, repair, and reassembly of the engine (top-end, bottom-end, valve train, cooling system, lubrication).
Fuel System:
Carburetor adjustment, cleaning, and overhaul; fuel tank and line maintenance; fuel pump operation (if applicable).
Ignition System:
Spark plug specifications, ignition timing, CDI unit, stator, and related components.
Drivetrain:
Clutch operation and adjustment, gearbox disassembly and repair, drive shaft and universal joint inspection, differential maintenance.
Suspension:
Front and rear shock absorber service and replacement, spring inspection, linkage maintenance.
Brakes:
Hydraulic brake system diagnosis, caliper and master cylinder service, brake pad replacement, brake fluid specifications and bleeding procedures.
Electrical System:
Wiring diagrams, lighting system troubleshooting, battery maintenance, starter motor and charging system diagnostics.
Chassis Frame:
Frame inspection for damage, steering system lubrication and adjustment, wheel bearing service.
Bodywork:
Panel removal and installation, seat maintenance, fender and bumper repair.
Maintenance:
Regular scheduled maintenance, lubrication points, filter replacement, fluid checks and changes.
Troubleshooting:
Diagnostic charts and flowcharts for common problems, identification of symptoms and their likely causes.
Repair:
Step-by-step instructions for component repair and replacement, torque specifications for critical fasteners.
Rebuilds:
Complete engine and transmission rebuild procedures, including necessary specifications and tolerances.
Adjustment:
Carburetor, clutch, throttle cable, and brake lever adjustments.
Inspection:
Inspection procedures for wear and tear, critical component checks before operation.
Depth Level:
Comprehensive (suitable for DIY enthusiasts and professional mechanics)
Diagnostic Capability:
Advanced diagnostic procedures, including electrical system troubleshooting with detailed wiring diagrams.
Specification Detail:
Includes critical torque values, clearances, tolerances, fluid capacities, and part specifications.
Engine Model Designation:
Likely a derivative of the 3GD or similar 350cc air-cooled single cylinder.
Engine Displacement:
348cc
Engine Configuration:
Single-cylinder, 4-stroke
Engine Cooling:
Air-cooled
Engine Aspiration:
Naturally aspirated
Bore X Stroke:
82mm x 67.2mm (typical for this engine family)
Compression Ratio:
Approx. 9.2:1
Horsepower:
Approx. 20-22 HP (at 5500 RPM)
Torque:
Approx. 21-23 lb-ft (at 4500 RPM)
Carburetor Type:
Mikuni BSR33 (or similar single barrel)
Fuel Delivery:
Gravity feed from fuel tank
Fuel Type:
Unleaded gasoline, minimum 87 octane
Length:
Approx. 74.2 inches (1885 mm)
Width:
Approx. 43.3 inches (1100 mm)
Height:
Approx. 43.5 inches (1105 mm)
Wheelbase:
Approx. 49.2 inches (1250 mm)
Ground Clearance:
Approx. 4.5 inches (115 mm)
Dry Weight:
Approx. 463 lbs (210 kg)
Fuel Capacity:
Approx. 3.2 gallons (12 Liters) including reserve
Oil Capacity:
Approx. 2.2 quarts (2.1 Liters) for engine/transmission combined
Atv Safety Standards:
Adheres to relevant industry safety standards for ATVs.
Braking System:
Hydraulic disc front brakes, sealed drum rear brake.
Suspension Design:
Independent front suspension with MacPherson struts, swingarm rear suspension for stability.
Ergonomics:
Designed for rider comfort and control, with intuitive controls.
Lighting:
Dual 30W headlights, 5W taillight/stoplight.
Oil Change Interval:
Every 1000 km or 6 months (refer to manual for precise details).
Air Filter Cleaning:
Every 1000 km or as needed based on conditions.
Spark Plug Check:
Every 3000 km or annually.
Engine Oil Type:
Yamalube 4 (or equivalent SAE 10W-40, API SG or higher).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Gear Oil Type:
Yamalube Gear Oil (or equivalent SAE 80W hypoid gear oil for final drive).
Carburetor Issues:
Can be prone to gumming up if not run regularly or if stale fuel is left in; requires periodic cleaning and adjustment.
Suspension Wear:
Bushings and bearings in suspension and steering can wear over time, requiring lubrication and replacement.
Drive Shaft U-Joints:
Require regular greasing to prevent wear and binding.
Importance Of Manual:
Crucial for understanding correct procedures, torque specs, and fluid types to ensure longevity and optimal performance.
Yamaha Atv Legacy:
Yamaha has a long and respected history in ATV manufacturing, known for innovation and durability.
Wolverine Lineage:
The Wolverine line represents Yamaha's entry into the sport-utility ATV market, evolving from earlier models.
Production Era:
The YFM350 Wolverine was produced through the late 1990s and early 2000s, representing a popular mid-range offering.
