🏷️ Basic Information Identification Make: Yamaha Model: Bruin Model Variant: 350 4x4 Model Variant Secondary: 400 (Implied by title context, though 350 is primary) Codes Product Id: Yamaha-Bruin-350-400-Service-Repair-Manual-2004-2006 👋 Introduction Market Position Segment: Utility ATV (All-Terrain Vehicle) Target Audience: Recreational riders, farmers, hunters, utility users Competitive Analysis Key Competitors: Honda FourTrax, Suzuki King Quad, Polaris Sportsman, Kawasaki Prairie Key Features Atv Features: 4x4 drivetrain, automatic transmission, independent front suspension (IFS), reliable engine Manual Value Proposition Quality Claim: BEST manuals on Tradebit, buy with confidence, not incomplete cheap versions Comparison: Similar to Factory Workshop Manuals or CDROM Manuals used in repair shops 📋 Manual Details Coverage Areas Coverage Years: 2004, 2005, 2006 Product Type: Service Repair Manual Specific Models Covered: Yamaha Bruin 350 4x4 (YFM350) Page Count Estimated Page Count: Extensive (Typical factory manuals for this era are 300-500+ pages) Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF Download File Format File Format: PDF Searchability: Likely text-searchable if professionally scanned Printability: Printable Print Quality Scan Quality: Varies by source, 'BEST manuals on Tradebit' implies good quality Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, disassembly, assembly, inspection, timing, lubrication, cooling system Fuel System: Carburetor tuning, cleaning, rebuilding, fuel pump, fuel lines, fuel tank Ignition System: Ignition coil, CDI unit, spark plug, timing, troubleshooting Transmission Drivetrain: Automatic transmission (V-belt type), clutch, gear selection, final drive, driveshafts, CV joints Suspension Steering: Front and rear suspension components, shock absorbers, steering knuckles, tie rods, wheel alignment Brakes: Hydraulic brake system, front and rear calipers, brake discs, master cylinder, brake lines, bleeding procedures Electrical System: Wiring diagrams, battery, starter motor, alternator, lighting, switches, fuses, relays, troubleshooting electrical faults Chassis Frame: Frame inspection, repair, body panels, fenders, seats Cooling System: Radiator, fan, hoses, coolant, thermostat operation Exhaust System: Muffler, exhaust pipe, heat shields Wheels Tires: Tire pressure, wheel nut torque, wheel bearing replacement Procedures Included Maintenance: Oil change, filter replacement, spark plug service, air filter cleaning/replacement, brake pad inspection/replacement, chain adjustment (if applicable), general lubrication Troubleshooting: Diagnostic charts, common problem identification and solutions for all major systems Repair: Step-by-step instructions for component disassembly, cleaning, inspection, repair, and reassembly Overhaul: Complete engine rebuild procedures, transmission overhaul Diagnostics: Component testing, electrical system diagnostics, fuel system testing Technical Depth Depth: Comprehensive (Factory level detail for professionals and advanced DIYers) Detail Level: Detailed specifications, torque values, clearances, diagnostic procedures ⚙️ Engine Specifications Primary Engine Engine Type: 4-Stroke, SOHC, 2-Valve Engine Displacement: 348cc (for 350 model) Bore X Stroke: 83 mm x 64.5 mm (Typical for 350cc class Yamaha, exact spec confirmed in manual) Cooling System: Liquid-cooled Performance Horsepower: Approx. 20-22 HP (Varies by tuning and specific model year) Torque: Approx. 27 Nm @ 5500 RPM (Varies by tuning and specific model year) Fuel System Fuel Delivery: Carburetor (Teikei Y28P or similar, confirmed in manual) Fuel Type: Unleaded gasoline, 87 octane (minimum) Lubrication Oil Type: Yamalube 4 (or equivalent API SG or higher, SAE 10W-30 or 20W-40 based on temperature) Oil Capacity: Approx. 1.8 L (1.9 US qt) with filter change (exact spec in manual) Ignition Spark Plug Type: NGK CR7E or Denso U22FSR-U (Typical, confirm in manual) Spark Plug Gap: 0.6-0.7 mm (0.024-0.028 in) (Typical, confirm in manual) 🔧 Transmission Standard Transmission Type: Automatic (Yamaha Constant Velocity Transmission - YCC-V) with Ultramatic® system Drive Modes: 2WD/4WD selector with locking front differential Gear Selection: Forward (H/L), Neutral, Reverse Features Engine Braking: Strong engine braking provided by the CVT system Final Drive: Shaft drive with sealed u-joint Fluid Specifications Transmission Oil Type: Yamaha"G" Gear Oil or equivalent API GL-4 SAE 80W (for final drive gearbox) Transmission Oil Capacity: Approx. 0.18 L (0.19 US qt) for final drive (confirm in manual) 📐 Dimensions Exterior Length: Approx. 76.2 inches (1935 mm) Width: Approx. 43.7 inches (1110 mm) Height: Approx. 45.3 inches (1150 mm) Wheelbase: Approx. 49.6 inches (1260 mm) Ground Clearance: Approx. 10.1 inches (257 mm) Weights Dry Weight: Approx. 562 lbs (255 kg) Wet Weight: Approx. 591 lbs (268 kg) (with all fluids) Cargo Front Rack Capacity: Approx. 88 lbs (40 kg) Rear Rack Capacity: Approx. 176 lbs (80 kg) Towing Capacity: Approx. 1100 lbs (500 kg) Trailer Tongue Weight: Approx. 110 lbs (50 kg) Wheels Tires Front Tire Size: AT25x8-12 Rear Tire Size: AT25x10-12 Wheel Bolt Pattern: 4x110 mm (Standard for many Yamaha ATVs) 🛡️ Safety Features Ratings Atv Safety Standards: Compliant with ANSI/SVIA standards (as applicable to the era) Active Features Braking System: Hydraulic disc brakes front and rear, parking brake Passive Features Lighting: Dual 30W halogen headlights, 8W taillight/stoplight Handlebars: Ergonomic handlebars with hand guards (typical) Throttle Limiter: Adjustable throttle stop for new riders (often included) 💡 Technology Features Infotainment Infotainment System: Basic analog gauge cluster (speedometer, odometer,...