Vehicle Segment:
Utility ATVs (All-Terrain Vehicles)
Key Competitors:
Polaris Sportsman, Honda FourTrax, Suzuki King Quad, Kawasaki Brute Force (in their respective displacement classes).
Manual Value Proposition:
Comprehensive, technician-level repair and maintenance guidance for DIY owners, enabling cost savings and self-sufficiency.
User Profile:
DIY enthusiasts, independent mechanics, and owners seeking to maintain, repair, or restore their Yamaha Bruin or Grizzly ATVs.
Covered Years:
2004, 2005, 2006, 2007
Covered Models:
YFM350 Bruin/Grizzly 2WD, YFM350F Bruin/Grizzly 4WD, YFM400F Bruin/Grizzly 4WD
Estimated Pages:
Varies based on specific model and options, typically 400-800 pages for comprehensive service manuals.
Type:
Service Repair Workshop Manual
Primary Language:
English
Delivery Format:
PDF Download (potentially zipped)
Engine Mechanical:
Complete engine disassembly, assembly, inspection, and repair for both 350cc and 400cc variants.
Fuel System:
Fuel injection system diagnosis, maintenance, and repair, including fuel pump, injectors, sensors, and throttle body.
Cooling System:
Radiator, fan, thermostat, water pump, and coolant flow troubleshooting and repair.
Electrical System:
Starting system, charging system, ignition system, lighting, battery, and fuses. Includes detailed wiring diagrams.
Chassis:
Suspension (front and rear), steering, brakes (hydraulic disc), wheels, and tires.
Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, lubrication, and general upkeep.
Troubleshooting:
Diagnostic procedures for common and uncommon problems, symptom-based troubleshooting guides.
Repair Rebuild:
Detailed step-by-step instructions for component repair and complete engine or drivetrain rebuilds.
Adjustments:
Carburetor (if applicable, though fuel injection is primary), throttle cable, brake levers, and other linkage adjustments.
Depth:
Comprehensive. Covers everything from basic periodic checks and adjustments to complete engine and transmission overhauls. Includes detailed diagnostics and troubleshooting for all major systems.
Searchability:
Likely searchable text-based PDF, enabling quick information retrieval.
Printability:
Printable on any computer and printer, as specified by the product description.
Physical Binding:
N/A (Digital download only, no physical copy)
Physical Paper:
N/A (Digital download only, no physical copy)
Illustration Quality:
Illustrated with clear step-by-step instructions, zoomable illustrations, and detailed component explosions/exploded views.
Estimated Size:
Can be up to 1800 MB, requiring significant storage space and a stable internet connection.
Engine Type:
4-stroke, SOHC (Single Overhead Cam)
Horsepower Estimated 350:
Approximately 20-25 HP (exact figures vary by specific tuning and year)
Torque Estimated 350:
Approximately 22-26 lb-ft (exact figures vary by specific tuning and year)
Horsepower Estimated 400:
Approximately 25-30 HP (exact figures vary by specific tuning and year)
Torque Estimated 400:
Approximately 27-32 lb-ft (exact figures vary by specific tuning and year)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Cooling Method:
Liquid-cooled
Transmission Type:
Automatic (Yamaha's Ultramatic® transmission with engine braking)
Drive Type:
2WD or 4WD (selectable, with locking front differential on some models)
Gear Selection:
High/Low range, Neutral, Reverse
Wheelbase Estimated:
Approximately 48.5 inches (1230 mm) for both 350 and 400 models.
Dry Weight Estimated 350:
Approximately 570-600 lbs (259-272 kg)
Dry Weight Estimated 400:
Approximately 585-615 lbs (265-279 kg)
Rack Capacity Front Estimated:
Typically around 99 lbs (45 kg)
Rack Capacity Rear Estimated:
Typically around 187 lbs (85 kg)
Atv Safety Standards:
Meets ANSI/SVIA 1-2001 and 2-2001 standards. (Common for Yamaha ATVs of this era).
Braking System:
Hydraulic disc brakes front and rear, with parking brake.
Engine Braking:
Utilizes the Ultramatic® transmission for consistent engine braking on descents.
Frame Construction:
Durable steel frame designed for off-road stability and load-carrying.
Display Features:
Digital instrument cluster displaying speed, odometer, trip meter, fuel level, 4WD indicator, and warning lights.
Traction Control:
Limited to mechanical grip; no electronic traction control systems.
Charging Port:
May include a 12V accessory outlet for charging devices.
Engine Oil Change:
Recommended every 1000 km or 6 months (refer to manual for exact interval, often sooner for severe use).
Air Filter Cleaning:
Recommended every 200 hours or annually, or more frequently in dusty conditions.
Spark Plug Replacement:
Typically recommended every 3000-5000 km or based on inspection.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher, or JASO MA certified (check manual for specific viscosity recommendations based on temperature).
Coolant Type:
Permanent Antifreeze (ethylene glycol-based) with corrosion inhibitors, mixed with distilled water at a 50/50 ratio.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Wear Items:
Brake pads, tires, drive belts (for CVT), and suspension components due to off-road use.
Efi Considerations:
Potential for injector clogging or sensor failure if fuel quality is poor or maintenance is neglected.
Heritage Focus:
Yamaha's long-standing reputation for reliable and durable powersports vehicles, including a strong presence in the ATV market since its inception.
Bruin Grizzly Context:
The Bruin and Grizzly lines represent Yamaha's utility ATV offerings, emphasizing versatility for work and recreation. The 350 and 400cc models provided accessible performance for a wide range of users.
Manufacturing Location:
Primarily manufactured in Japan and/or the United States by Yamaha Motor Company.
