Basic Information Identification Make: Yamaha Model: Bruin 350 4WD / Grizzly 350 4WD Model Variants Covered: Bruin 350 4WD, Bruin 350 4WD HUNTER, Grizzly 350 4WD, Grizzly 350 4WD HUNTER Year: 2008 Codes Model Code Prefix: YFM350 Introduction Market Position Market Segment: Mid-range utility ATV, popular for recreational trail riding, hunting, and light farm work. Target Audience: Owners seeking to perform their own maintenance and repairs, DIY enthusiasts, and small-scale repair shops. Competitive Analysis Competitors: Honda Recon/Rancher, Kawasaki Bayou/Prairie, Suzuki King Quad/Eiger, Polaris Sportsman. Yamaha Advantage: Renowned for its durable Ultramatic transmission, reliable engine, and rugged chassis, particularly favoured in demanding conditions. Key Features Vehicle Highlights: SOHC engine, Ultramatic automatic transmission with engine braking, On-Command 2WD/4WD, independent front suspension, rear disc brake, sealed multi-function storage. Manual Value Proposition: Provides factory-level repair and maintenance data, enabling owners to maintain their ATVs to OEM standards, reducing reliance on expensive dealer service. Manual Details Coverage Areas Geographic Coverage: Global (standard Yamaha service procedures apply) Regional Variants Covered: Applicable to all production variants of the 2008 Bruin 350 4WD and Grizzly 350 4WD models. Page Count Estimated Page Count: High (typical Yamaha service manuals for this era are 300-500+ pages) Manual Type Type: Factory Service Manual (FSM) / Repair Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, inspection, and repair of the 348cc single-cylinder, SOHC, 4-stroke engine. Includes cylinder head, valve train, piston, crankshaft, lubrication system, cooling system, starting system, and carburetor (Mikuni BSR33). Fuel System: Detailed coverage of the fuel tank, fuel pump, fuel filter, carburetor (Mikuni BSR33), and fuel lines. Includes specifications for fuel delivery, idle speed, and jetting. Troubleshooting for fuel delivery issues. Transmission: Coverage of the Ultramatic Automatic Transmission, including belt inspection and replacement, torque converter, drive clutch, driven clutch, and final drive. Also includes gearbox disassembly, assembly, and lubrication. Drivetrain: Comprehensive details on the 4WD system, including operation of the On-Command 2WD/4WD system, front differential, propeller shaft, drive shafts, and wheel hubs. Rear differential and axle coverage. Suspension: Front and rear suspension systems. Includes independent front suspension (double A-arm) and rear swingarm suspension. Coverage of shocks, springs, bushings, and related components. Adjustment procedures. Brakes: Front and rear braking systems. Includes hydraulic disc brakes, brake calipers, master cylinders, brake lines, brake pads, and rotors. Bleeding procedures and troubleshooting. Parking brake system. Electrical System: Complete coverage of the electrical system. Includes battery, starter motor, charging system (stator, regulator/rectifier), ignition system (CDI, ignition coil, spark plug), lighting (headlights, taillight, brake light), and accessories. Wiring diagrams included. Cooling System: Air-cooled engine with a fan-assisted oil cooler. Coverage of oil lines, oil filter, and oil cooler assembly. Oil change procedures and oil specifications. Frame And Body: Frame inspection, maintenance, and repair. Covers front and rear fenders, body panels, racks, seat, handlebars, and controls. Procedures for disassembly and reassembly of body components. Steering System: Steering mechanism, including tie rods, steering knuckles, and handlebars. Adjustment and inspection of steering components. Optional power steering system (if applicable to specific sub-models, though unlikely for 2008 Bruin/Grizzly 350). Procedures Included Scheduled Maintenance: Detailed maintenance schedules, including oil changes, filter replacements, spark plug checks, chain adjustments, and lubrication points. Troubleshooting: Comprehensive troubleshooting guides for common problems across all major systems, including starting issues, poor running, electrical faults, and braking problems. Symptom-based diagnostics. Disassembly And Assembly: Step-by-step instructions for complete disassembly and reassembly of all major components and sub-assemblies. Inspection And Adjustment: Detailed procedures for inspecting wear and tear, measuring tolerances, and adjusting components to factory specifications. Rebuilds: Procedures for complete engine rebuilds, transmission overhauls, and suspension component replacement. Wiring Diagrams: Clear and detailed electrical wiring diagrams for accurate troubleshooting and repair of the electrical system. Technical Depth Depth: Comprehensive. Covers everything from basic fluid changes and filter replacements to complete engine and transmission rebuilds, electrical diagnostics, and suspension overhauls. Suitable for both novice mechanics and experienced technicians. Diagnostic Procedures: Advanced diagnostic procedures for identifying and resolving complex mechanical and electrical issues. Torque Specifications: Inclusion of all critical torque specifications for fasteners throughout the vehicle. Special Tools: Identification and use of any specialized tools required for specific repair or maintenance procedures. Manual Specifications File Format File Format: PDF Searchability: Text-searchable (as it's computer-created, not scanned). Print Quality Image Quality: High-resolution, zoomable without blur. Crisp text and clear diagrams. Diagram Clarity: Exploded diagrams with part identification before each disassembly section for ease of use. Binding Type Binding Type: Digital Download (N/A for PDF, but implies easy access and printing). Paper Type Paper Type: N/A (Digital PDF) Engine Specifications Primary Engine Engine Type: 348cc, 4-stroke, SOHC, 2-valve, single-cylinder Bore X Stroke: 83.0 mm x 64.5 mm Compression Ratio: 9.2:1 Cooling System: Air-cooled with fan-assisted oil cooler Performance Horsepower Estimate: Approximately 21-23 HP (at crank, estimated based on class) Torque Estimate: Approximately 20-22 lb-ft (at...