Target Audience:
        
        
            Owners, DIY mechanics, and professional service technicians working on Yamaha YFM350X Bruin Wolverine 350 and YFM400FA Kodiak ATVs.
        
     
    
        
            Value Proposition:
        
        
            Provides essential information for maintaining, diagnosing, and repairing these specific Yamaha ATV models, enabling cost savings and ensuring proper operation.
        
     
    
    
        
            Competitors:
        
        
            Other service manuals or repair guides for the same model years and platforms.
        
     
    
    
        
            Comprehensiveness:
        
        
            Covers all aspects of vehicle repair and maintenance for the specified model years.
        
     
    
        
            Practicality:
        
        
            Digital format allows for easy access, searching, and printing of relevant sections.
        
     
 
    
    
    
        
            Engine Systems:
        
        
            Engine assembly, disassembly, inspection, repair, tuning, oil, cooling, lubrication, carburetor, fuel injection (if applicable), ignition, exhaust.
        
     
    
        
            Transmission Systems:
        
        
            Clutch operation, gear shifting mechanisms, transmission disassembly and reassembly, lubrication, internal components.
        
     
    
        
            Drivetrain Systems:
        
        
            Drive shafts, differentials, CV joints, hubs, wheel bearings, final drive maintenance.
        
     
    
        
            Suspension Systems:
        
        
            Front and rear suspension components, shock absorbers, A-arms, bushings, springs, adjustment, repair.
        
     
    
        
            Braking Systems:
        
        
            Hydraulic brake system, master cylinder, brake lines, calipers, brake pads, brake discs, bleeding, adjustment.
        
     
    
        
            Electrical Systems:
        
        
            Battery, charging system (stator, regulator/rectifier), starter motor, ignition system, lighting, wiring diagrams, fuses, relays.
        
     
    
        
            Fuel Systems:
        
        
            Fuel tank, fuel lines, fuel pump, carburetor overhaul (for applicable models), fuel filter replacement.
        
     
    
        
            Frame And Body:
        
        
            Chassis components, body panels, plastics, seat, handlebars, fenders, mounting hardware.
        
     
    
    
        
            Maintenance Procedures:
        
        
            Routine maintenance checks, oil changes, filter replacements, spark plug servicing, chain adjustment, lubrication points.
        
     
    
        
            Troubleshooting Guides:
        
        
            Diagnostic procedures for common performance issues, electrical faults, starting problems, and mechanical failures.
        
     
    
        
            Repair Procedures:
        
        
            Detailed step-by-step instructions for component removal, installation, and repair for all major systems.
        
     
    
        
            Overhaul Procedures:
        
        
            Complete rebuild procedures for engines, transmissions, and other complex mechanical assemblies.
        
     
    
        
            Technical Specifications:
        
        
            Torque specifications, clearances, fluid capacities, electrical values, engine timing, maintenance intervals.
        
     
    
    
        
            Depth Of Coverage:
        
        
            Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostics and troubleshooting.
        
     
 
    
    
    
        
            Yfm350X Bruin Wolverine Engine Type:
        
        
            Air-cooled, 4-stroke, SOHC, 2-valve
        
     
    
        
            Yfm350X Bruin Wolverine Displacement:
        
        
            348cc
        
     
    
        
            Yfm400Fa Kodiak Engine Type:
        
        
            Air-cooled, 4-stroke, SOHC, 2-valve
        
     
    
        
            Yfm400Fa Kodiak Displacement:
        
        
            398cc
        
     
    
    
        
            Bore X Stroke Yfm350X:
        
        
            83.0 mm x 64.5 mm
        
     
    
        
            Bore X Stroke Yfm400Fa:
        
        
            92.0 mm x 73.6 mm
        
     
    
        
            Compression Ratio Yfm350X:
        
        
            9.2:1
        
     
    
        
            Compression Ratio Yfm400Fa:
        
        
            8.8:1
        
     
    
    
        
            Carburetor Yfm350X:
        
        
            Mikuni BSR33/1 (single carburetor)
        
     
    
        
            Carburetor Yfm400Fa:
        
        
            Mikuni BSR38/1 (single carburetor)
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline, minimum 87 octane
        
     
    
    
        
            Oil Type:
        
        
            Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher
        
     
    
        
            Oil Capacity W Filter Change Yfm350X:
        
        
            Approx. 2.0 L (2.1 US qt)
        
     
    
        
            Oil Capacity W Filter Change Yfm400Fa:
        
        
            Approx. 2.2 L (2.3 US qt)
        
     
 
    
    
    
        
            Transmission Type:
        
        
            Constant mesh, 5-speed forward, 1 reverse with automatic clutch
        
     
    
        
            Clutch Type:
        
        
            Wet, multiple-disc, automatic centrifugal clutch
        
     
    
        
            Final Drive:
        
        
            Shaft drive, enclosed lubricated chain
        
     
    
    
        
            Gear Shifting Mechanism:
        
        
            Foot-operated, 1-N-2-3-4-5
        
     
    
    
        
            Transmission Oil Type:
        
        
            Yamalube Gear Oil 80W API GL-4 or equivalent
        
     
    
    
        
            Transmission Oil Capacity Yfm350X:
        
        
            Approx. 0.8 L (0.85 US qt)
        
     
    
        
            Transmission Oil Capacity Yfm400Fa:
        
        
            Approx. 0.8 L (0.85 US qt)
        
     
 
    
    
    
        
            Initial Service:
        
        
            Recommended at 100-hour or 600-mile interval (Refer to manual for precise schedule).
        
     
    
        
            Engine Oil Change Interval:
        
        
            Every 100 hours or 6 months, whichever comes first.
        
     
    
        
            Air Filter Cleaning:
        
        
            Check and clean every 10-20 hours of operation, depending on conditions.
        
     
    
        
            Spark Plug Service:
        
        
            Inspect and gap every 100 hours or 6 months.
        
     
    
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 hydraulic brake fluid
        
     
    
        
            Coolant Type:
        
        
            Mixture of high-quality ethylene glycol based antifreeze and water (50/50 ratio) for air-cooled engines (no coolant specified for these models; manual will confirm if any specific coolant is required for certain components).
        
     
    
    
        
            Common Wear Items:
        
        
            Brake pads, tires, suspension bushings, drive chain/sprockets, battery.
        
     
    
        
            Carburetor Issues:
        
        
            Can be prone to clogging from debris or stale fuel if not maintained; requires regular cleaning and adjustment.
        
     
    
        
            Electrical Connections:
        
        
            Corrosion in electrical connectors due to exposure to elements is a possibility; manual will guide on inspection and cleaning.