🏷️ Basic Information Identification Make: Yamaha Model: YFM 350 Wolverine Model Nickname: Wolverine Generation Generation Designation: First Generation Codes Vin Code: Typically begins with 'JY' 👋 Introduction Market Position Vehicle Segment: Utility ATV Target Audience: Recreational riders, farmers, hunters, and those needing a reliable workhorse for off-road applications. Competitive Analysis Key Competitors: Honda FourTrax 300/350, Suzuki QuadRunner 250/300, Kawasaki Bayou 300/300. Key Features Durability And Reliability: Known for its robust construction and dependable performance, making it a popular choice for demanding environments. Versatility: Suitable for a wide range of off-road activities, from trail riding to light work tasks. Ease Of Maintenance: Designed with accessibility in mind, allowing for straightforward routine maintenance and repairs with the proper documentation. 📋 Manual Details Coverage Areas Covered Years: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Page Count Estimated Page Count: 400+ Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Top-end overhaul, bottom-end rebuild, cylinder head, valve train, piston, connecting rod, crankshaft, lubrication system, cooling system (if applicable), fuel system (carburetor, fuel pump), ignition system, exhaust system. Drivetrain Systems: Transmission (gearbox), clutch (wet multi-plate), drive shafts, differential, final drive, chain/belt maintenance (if applicable). Suspension Systems: Front and rear suspension, shock absorbers, springs, control arms, steering components. Braking Systems: Front and rear brake systems (drum or disc), brake calipers, master cylinder, brake lines, bleeding procedures. Electrical Systems: Battery, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), lighting, ignition coil, CDI unit, wiring diagrams, troubleshooting electrical faults. Chassis And Body: Frame, body panels, fenders, racks, seat, controls, instrumentation. Procedures Included Maintenance Procedures: Routine checks, oil changes, filter replacements, spark plug service, chain adjustment, air filter cleaning/replacement, brake adjustments, battery maintenance. Repair Procedures: Engine rebuilds, transmission overhaul, suspension component replacement, brake system repairs, electrical component diagnosis and replacement. Troubleshooting Guides: Diagnostic flowcharts for common starting, running, and electrical issues. Symptom-based troubleshooting. Technical Specifications: Torque values for all fasteners, engine specifications (bore, stroke, compression ratio), fluid capacities, electrical specifications (resistance, voltage). Technical Depth Depth Of Coverage: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and wiring schematics. 📊 Manual Specifications File Format File Format: PDF Print Quality Image Resolution: High-resolution, clear diagrams and text, suitable for printing. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Text Searchability: Searchable text for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, air-cooled Engine Displacement: 348cc Bore X Stroke: 83 mm x 64.5 mm Compression Ratio: 9.2:1 (typical) Performance Horsepower: Approx. 19-21 HP @ 5500 RPM (varies slightly by year/tuning) Torque: Approx. 20-22 lb-ft @ 4000 RPM (varies slightly by year/tuning) Fuel System Fuel Delivery: Carburetor (Mikuni VM series, e.g., VM34) Fuel Type: Unleaded gasoline, 87 octane or higher Ignition Ignition System: CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Transmission Type: 5-speed manual with reverse Clutch Type: Wet multi-plate Features Drive System: Shaft drive to rear wheels (2WD) Gear Ratios: Specific gear ratios detailed within the manual for each gear. 📐 Dimensions Exterior Length: Approx. 70-75 inches (varies slightly by year) Width: Approx. 42-45 inches (varies slightly by year) Height: Approx. 42-44 inches (varies slightly by year) Weights Dry Weight: Approx. 450-470 lbs (varies slightly by year) Fuel Capacity: Approx. 2.8 gallons (including 0.5 gallon reserve) Wheels And Tires Front Tire Size: AT23 x 7-10 (typical) Rear Tire Size: AT22 x 10-9 (typical) Wheel Bolt Pattern: 4/110mm (typical for rear) 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to ANSI/SVIA safety standards for ATVs. Active Features Braking System Description: Hydraulic disc brakes front and rear for reliable stopping power. Throttle Limiter: Some models may have a throttle limiter screw for beginner riders (detailed in manual). Passive Features Handlebar Design: Ergonomically designed handlebars with comfortable grips and controls. Footwells: Wide, rugged footwells with traction pegs for secure footing. 💡 Technology Features Infotainment Instrumentation: Basic analog gauges for speedometer, odometer, and potentially a neutral/gear indicator. Warning lights for oil pressure, battery, and high temperature. Driver Assistance Atv Specific Features: Focus is on mechanical operation rather than electronic driver aids. Emphasis on reliable mechanical systems. Connectivity Connectivity Features: N/A (This era of ATV predates modern connectivity features like Bluetooth or USB ports). 🔧 Maintenance Service Intervals Engine Oil Change: Every 100 hours or annually, whichever comes first. Refer to manual for specific oil type and capacity. Air Filter Cleaning: Every 50 hours or semi-annually. Service more frequently in dusty conditions. Spark Plug Replacement: Inspect every 100 hours; replace as needed. Specific gap setting is crucial. Drive Chain Lubrication Adjustment: Lubricate every 50 hours; check and adjust tension every 100 hours or as needed. Refer to manual for correct...