🏷️ Basic Information Identification Make: Yamaha Model: YFM350X Bruin / Wolverine 350 & YFM400FA Kodiak 400 Codes Common Chassis Codes: YFM350X, YFM400FA Generation Production Years: 2003-2009 👋 Introduction Market Position Target Audience: DIY mechanics, ATV enthusiasts, and professional service technicians seeking detailed repair and maintenance information for Yamaha 350cc and 400cc ATVs. Competitive Analysis Value Proposition: Provides comprehensive, factory-level repair data for a range of popular Yamaha models, enabling owners to perform complex repairs and routine maintenance, saving on labor costs. Key Features Key Manual Features: Instant download, printable pages, high-quality diagrams, extensive troubleshooting sections, model-specific data. 📋 Manual Details Coverage Areas Applicable Models: 2003-2009 Yamaha YFM350X Bruin 2WD, 2003-2009 Yamaha YFM350X Wolverine 2WD, 2003-2009 Yamaha YFM400FA Kodiak 4x4 Page Count Estimated Page Count: Varies by specific model, typically 300-500+ pages for comprehensive service manuals. Manual Type Manual Type: Service Repair Manual (Workshop Manual) Language Language: English Format File Format: PDF (Downloadable) 📖 Manual Coverage Systems Covered Engine Systems: Engine disassembly, assembly, inspection, troubleshooting, top-end, bottom-end, cooling system, lubrication system, oil seals, gaskets. Drivetrain Systems: Transmission, clutch, drive shafts, differentials, final drive, gearbox maintenance and repair. Chassis Systems: Frame inspection, suspension (front and rear), steering system, brakes (hydraulic systems, calipers, master cylinders, lines), wheels, tires. Electrical Systems: Wiring diagrams, battery, charging system (stator, rectifier/regulator), ignition system, lighting, starter motor, switches, fuses, relays, diagnostic connectors. Fuel And Carburetion Systems: Carburetor specifications, adjustment, cleaning, rebuilding, fuel lines, fuel pump, fuel tank. Procedures Included Maintenance Procedures: Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, coolant flush, brake fluid replacement, lubrication points. Repair Procedures: Complete engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement, electrical component troubleshooting and replacement. Troubleshooting Guides: Diagnostic procedures for common starting issues, running problems, electrical faults, and operational anomalies. Technical Depth Diagnostic Capabilities: Detailed diagnostic information, common fault codes (if applicable to the era/system), and troubleshooting trees. Rebuild Guidance: Step-by-step instructions for complete engine and transmission rebuilds, including torque specifications and critical measurements. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution, suitable for printing individual pages or the entire manual. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download - printable on demand) Compatibility Operating System Compatibility: All versions of Windows & Mac Requirements Software Requirements: Adobe PDF Reader (or compatible PDF viewer) ⚙️ Engine Specifications Primary Engine Engine Type Yfm350: 348cc, Air-cooled, SOHC, 4-stroke, 2-valve, Single Cylinder Engine Type Yfm400: 387cc, Air-cooled, SOHC, 4-stroke, 2-valve, Single Cylinder Performance Bore X Stroke Yfm350: 83.0 mm x 64.5 mm Bore X Stroke Yfm400: 90.0 mm x 75.0 mm Compression Ratio Yfm350: 9.2:1 Compression Ratio Yfm400: 8.7:1 Fuel System Carburetor Yfm350: Mikuni BSR33/1, Single Carburetor Carburetor Yfm400: Mikuni BSR33/1, Single Carburetor Ignition Ignition System: CDI (Capacitor Discharge Ignition) Cooling System Cooling Method: Air Cooled 🔧 Transmission Standard Transmission Type Yfm350: 5-speed semi-automatic (Ultramatic with forward, neutral, reverse) Transmission Type Yfm400: Automatic Transmission (Ultramatic) with forward, neutral, reverse Features Drive System: Shaft Drive (2WD for Bruin/Wolverine, 4WD for Kodiak) Fluid Specifications Gear Oil Type: Yamaha SAE 10W-30 API SE, SF or SG (Consult specific manual for precise viscosity and API rating) 📐 Dimensions Weights Dry Weight Yfm350: Approx. 538 lbs (244 kg) Dry Weight Yfm400: Approx. 571 lbs (259 kg) Wheels Tires Front Tire Size: AT25x8-12 (Typical, consult manual for exact fitment) Rear Tire Size: AT25x10-12 (Typical, consult manual for exact fitment) Dimensions Ground Clearance: Approx. 10.2 inches (259 mm) (Varies by model and suspension setting) 🛡️ Safety Features Active Features Braking System: Hydraulic disc brakes front and rear. Passive Features Design Safety: Integrated floorboards with heel guards, handguards (depending on trim/model). 💡 Technology Features Infotainment Dashboard Features: Basic digital/analog meter cluster displaying speed, odometer, trip meter, neutral indicator, reverse indicator, and possibly a fuel gauge (depending on model/trim). Driver Assistance Rider Aid Systems: Leverages reliable mechanical systems and proven engine/transmission designs rather than electronic driver aids common in modern vehicles. 🔧 Maintenance Service Intervals Engine Oil Change Interval: Every 6 months or 1,000 miles / 1,600 km, or 200 operating hours (Refer to specific manual for precise interval). Spark Plug Replacement Interval: Every 12 months or 2,000 miles / 3,200 km (Consult manual for specific plug type and gap). Air Filter Maintenance: Clean every 6 months or 1,000 miles / 1,600 km; replace as needed. Fluid Specifications Engine Oil Capacity Yfm350: Approx. 1.8 L (1.9 US qt) with filter change (Consult manual for exact capacity). Engine Oil Capacity Yfm400: Approx. 1.9 L (2.0 US qt) with filter change (Consult manual for exact capacity). Engine Oil Recommendation: Yamalube 4 (or equivalent) SAE 10W-30 API SE, SF or SG (Check manual for specific grade and API classification). Brake Fluid Type: DOT 3 or DOT 4 Hydraulic Brake Fluid (Consult manual for exact specification). Known Issues Common Wear Items: Brake pads,...