🏷️ Basic Information

Make:

Yamaha

Model:

Grizzly 350 / 400

Model Codes:

YFM400FAR, YFM350FAS

Model Years Covered:

2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

👋 Introduction

Product Category:

All-Terrain Vehicle (ATV) Service Repair Manual

Target Audience:

ATV owners, DIY mechanics, service technicians.

Differentiation:

Make, model, and year specific; not generic. Provides detailed, step-by-step instructions and diagrams.

Content Quality:

Easy-to-follow instructions, step-by-step diagrams, comprehensive coverage of all workshop repair procedures.

Convenience:

Instant download format provides immediate access to critical repair information.

📋 Manual Details

Manual Type:

Service Repair Manual

Language:

English

Format:

PDF Download

Delivery Method:

Instant Download via Email Link

Compatibility:

PC/MAC Compatible

Features:

Zoom In/Out Capability

📖 Manual Coverage

Engine Overhaul:

Complete engine rebuilding, including cylinder head, valve, cylinder, piston, crankshaft, primary shaft, and crankcase.

Fuel System:

Detailed inspection, adjustment, and repair of the fuel system.

Transmission Drivetrain:

Covers sub-transmission, main transmission, clutch, gearshift linkage, and shaft components.

Suspension Steering:

Comprehensive details on front and rear wheel and suspension systems.

Braking System:

In-depth information on hydraulic brake system maintenance and repair.

Electrical System:

Coverage includes battery, charging system, ignition system, electric starter, and switches.

Lubrication:

Specific lubrication requirements and procedures.

General Maintenance:

Routine inspection and adjustment procedures for optimal performance.

Troubleshooting:

Dedicated section for diagnosing and resolving common issues.

Repair Procedures:

Step-by-step instructions for a wide range of repair tasks.

Wiring Diagrams:

Includes essential electrical wiring diagrams for diagnostic and repair purposes.

Rebuilding:

Detailed guidance on component rebuilding, from engine internals to transmission components.

Depth Level:

Comprehensive, from basic fluid checks and adjustments to complete engine and transmission rebuilds.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely text-searchable within the PDF (depending on original source).

Printable:

Yes, individual pages or the entire manual can be printed.

Digital Features:

Instant download, viewable on screen.

⚙️ Engine Specifications

Engine Type:

Likely a single-cylinder, 4-stroke, air-cooled or oil-cooled engine.

Engine Displacement:

348cc (for YFM350) and 386cc (for YFM400) – precise figures require manual confirmation.

Bore X Stroke:

Specific values detailed within the manual (e.g., YFM350 may be 83mm x 64.5mm).

Compression Ratio:

Specifications available in the manual.

Horsepower And Torque:

Detailed performance figures and torque specifications for various engine components found in the manual.

Fuel Delivery:

Likely carburetor-fed (e.g., Mikuni BSR series), with detailed tuning and maintenance procedures.

Engine Oil Type:

Yamaha recommends Yamalube or equivalent 4-stroke motorcycle oil (e.g., SAE 10W-40 or 20W-50, depending on climate), meeting API SG or higher. Specific API classification and viscosity grade detailed in manual.

Engine Oil Capacity:

Typically around 1.7-2.0 liters without filter change, 1.9-2.2 liters with filter change. Exact capacity specified in manual.

🔧 Transmission

Transmission Type:

Automatic transmission with a Torque Converter and a 2-speed (High/Low range) sub-transmission.

Drive System:

Yamaha On-Command system (selectable 4WD, 2WD, and locked 4WD), often with an Ultramatic automatic transmission.

Gear Ratios:

Specific gear ratios for both the main and sub-transmission are detailed in the manual.

Clutch Type:

Centrifugal wet-type automatic clutch.

Transmission Fluid Type:

Yamaha's Ultramatic Fluid or equivalent automatic transmission fluid (ATF). Specific type and capacity detailed in manual.

📐 Dimensions

Overall Length:

Approximately 76.8 inches (1950mm) for YFM350; YFM400 may vary slightly. Exact dimensions in manual.

Overall Width:

Approximately 43.7 inches (1110mm) for YFM350; YFM400 may vary slightly. Exact dimensions in manual.

Overall Height:

Approximately 44.3 inches (1125mm) for YFM350; YFM400 may vary slightly. Exact dimensions in manual.

Dry Weight:

Around 562 lbs (255 kg) for YFM350; YFM400 may be slightly heavier. Exact figures in manual.

Ground Clearance:

Typically around 10.1 inches (257mm). Specific clearance values for different models and suspension settings detailed in manual.

Towing Capacity:

Often rated around 1,000 lbs (450 kg) for hitch towing. Check manual for specific limits.

Rack Load Capacity:

Front rack: 99 lbs (45 kg); Rear rack: 187 lbs (85 kg). Specific capacities are in the manual.

🛡️ Safety Features

Atv Safety:

ATVs have inherent safety considerations. Manual covers safe operating procedures, protective gear, and maintenance for safe operation.

Braking System:

Hydraulic disc brakes (often dual front, single rear) for reliable stopping power. Manual details maintenance and troubleshooting.

4Wd System:

Yamaha On-Command system provides enhanced traction and control in various terrains.

Chassis Design:

Durable frame construction designed for off-road use. Manual includes chassis inspection and repair.

💡 Technology Features

Features:

ATVs of this era typically do not feature advanced infotainment systems. Focus is on functional controls and basic instrumentation (speedometer, odometer, fuel gauge, warning lights).

Traction Control:

Limited to the mechanical aspects of the 4WD system. No electronic traction control in the modern sense.

Features:

No advanced connectivity features (e.g., Bluetooth, smartphone integration).

Ignition System:

CDI (Capacitor Discharge Ignition) system. Manual details timing and troubleshooting.

Starter System:

Electric starter system, often with a backup recoil starter. Manual covers starter motor, solenoid, and battery charging system diagnostics.

🔧 Maintenance

Oil Change Interval:

Recommended every 1,000 km (600 miles) or 6 months, whichever comes first. Regular inspection should be more frequent. Specific interval found in manual.

Air Filter Cleaning:

Recommended every 1000 km (600 miles) or more frequently in dusty conditions. Manual provides cleaning and replacement instructions.

Spark Plug Replacement:

Typically around 5,000 km (3,000 miles). Specific recommendations and gap settings are in the manual.

Brake Fluid:

DOT 3 or DOT 4 hydraulic brake fluid. Manual specifies exact type and bleeding procedures.

Coolant Type:

If liquid-cooled variant exists, Yamaha's specified coolant or equivalent mixture. Manual will detail capacity and type.

Common Wear Items:

Brake pads, tires, battery, air filter, and drive belts (if applicable) are common wear items. Manual guides on inspection and replacement.

Carburetor Cleaning:

Carburetors can require periodic cleaning and adjustment, especially if the vehicle sits for extended periods. Manual provides detailed procedures.

Electrical Connections:

Corrosion or loose connections in electrical systems can cause issues. The manual's electrical diagrams and troubleshooting sections are invaluable.

📚 Vehicle History

Manufacturer:

Yamaha Motor Corporation, known for its diverse range of powersports products, including motorcycles, ATVs, and marine engines.

Grizzly Lineage:

The Grizzly line is Yamaha's flagship series of ATVs, renowned for its ruggedness, reliability, and off-road capability. The 350 and 400 models represent mid-size offerings within this esteemed line.

Manufacturing Period:

Models covered span from 2003 to 2010, indicating a robust production run for these particular iterations.

🏆 Awards & Recognition

Model Reputation:

Yamaha Grizzly models are consistently recognized for their durability, reliability, and class-leading off-road performance within the utility ATV segment.