Positioning:
The Yamaha YFM Wolverine 350 was positioned as a capable and reliable recreational ATV for trail riding and general utility use.
Competitors:
Competed with models from Honda (e.g., FourTrax 300/350), Suzuki (e.g., QuadSport 300), and Kawasaki (e.g., Bayou 300).
Features:
Known for its torquey 2WD operation, robust engine, and comfortable riding position, making it a popular choice for its era.
Engine:
Complete overhaul, diagnosis, tuning, lubrication, cooling system.
Carburetion:
Detailed explanation of carburetor operation, adjustment, cleaning, and overhaul.
Electrical:
Wiring diagrams, ignition system, lighting, battery, starter, charging system, troubleshooting.
Chassis:
Suspension (front and rear), steering, frame, wheels, tires, brakes.
Drivetrain:
Final drive, driveshaft, differential (if applicable), clutch, gearbox.
Bodywork:
Body panels, fenders, seating, handlebars, controls.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, lubrication, valve adjustments.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon issues.
Repair:
Step-by-step instructions for engine rebuilds, component replacement, and adjustments.
Inspection:
Periodic inspection points and procedures for wear and tear.
Depth:
Comprehensive, covering from basic adjustments to complete engine and transmission overhauls.
Diagnostics:
Detailed diagnostic trees and troubleshooting charts.
Specifications:
Inclusion of all critical torque values, clearances, fluid types, and electrical specifications.
Searchability:
Likely text-searchable PDF for efficient information retrieval.
Quality:
Digital format allows for high-resolution printing of all diagrams and text.
Binding:
Not applicable (Digital download)
Paper:
Not applicable (Digital download)
Engine Type:
4-stroke, SOHC, air-cooled
Bore X Stroke:
83.0 mm x 64.5 mm
Horsepower:
Approx. 20 HP (estimated)
Torque:
Not explicitly stated in product info, but known for good low-end torque.
Fuel Type:
Unleaded gasoline
Ignition System:
CDI (Capacitor Discharge Ignition)
Oil Type:
Yamaha Motorcycle Oil API SG or similar (Manual will specify exact grade and capacity).
Cooling System:
Air-cooled
Length:
Approx. 73.2 in (1860 mm)
Width:
Approx. 43.3 in (1100 mm)
Height:
Approx. 42.1 in (1070 mm)
Wheelbase:
Approx. 49.2 in (1250 mm)
Dry Weight:
Approx. 463 lbs (210 kg)
Fuel Capacity:
3.3 gal (12.5 L), including 0.7 gal reserve
Front Tire Size:
AT22x8-10
Rear Tire Size:
AT22x10-10
Oil Change Interval:
Refer to manual for specific interval (typically every 1000-2000 miles or annual service).
Air Filter Cleaning:
Frequent checks and cleaning recommended, especially in dusty conditions (detailed in manual).
Spark Plug Replacement:
Refer to manual for interval and correct spark plug type (e.g., NGK CR9E or equivalent).
Valve Adjustment:
Recommended at specified mileage/hour intervals (detailed in manual).
Engine Oil Grade:
Yamaha Genuine Yamalube or API SG, SAE 10W-40 (verify in manual).
Brake Fluid Type:
DOT 3 or DOT 4 (verify in manual).
Gear Oil:
Specific gear oil type for final drive and transmission (verify in manual).
Common Issues:
Carburetor gumming if not run regularly, potential wear on suspension components over time, starter clutch issues on some models (manual provides diagnostic steps).
Heritage:
Yamaha has a long-standing reputation for manufacturing high-quality motorcycles and powersports vehicles, including a strong presence in the ATV market since the early 1980s.
Evolution:
The Wolverine line evolved from Yamaha's earlier ATV designs, focusing on a blend of sport and utility features. The 350cc engine was a popular displacement for this segment.
Production Years:
The YFM350 Wolverine was produced through several model years, with the 1999 model being part of its established generation.
