🏷️ Basic Information

Make:

Yamaha

Model:

Grizzly Bruin 350

Year:

2008

Chassis Code:

YFM400FAR

👋 Introduction

Category:

Utility ATV

Target User:

Recreational riders, hunters, trail explorers, light farm work

Key Competitors:

Honda Rancher, Suzuki King Quad 300/350, Kawasaki Bayou 300

Engine Type:

Reliable air-cooled, single-cylinder engine

Transmission Type:

Automatic (CVT) for ease of use

Drivetrain:

selectable 2WD/4WD with Ultramatic transmission system

Suspension:

Comfortable and capable independent front suspension, solid rear axle

📋 Manual Details

Engine Coverage:

Complete engine disassembly, assembly, diagnosis, and repair

Transmission Coverage:

Automatic transmission (CVT) service, inspection, and adjustment

Chassis Coverage:

Suspension, steering, braking system, wheel hub, and axle service

Electrical Coverage:

Ignition system, charging system, lighting, starting system, wiring diagrams, and component testing

Bodywork Coverage:

Body panel removal/installation, seat, fuel tank, and cargo rack service

Estimated Page Count:

Approximately 400-500 pages (typical for comprehensive service manuals)

Type:

Service Manual / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Mechanical:

Cylinder head, valves, piston, crankshaft, camshaft, timing chain, lubrication system, cooling system

Fuel System:

Carburetor (Mikuni BSR33) specifications, cleaning, adjustment, fuel pump, fuel lines

Exhaust System:

Muffler, exhaust pipe inspection and replacement

Drivetrain:

Continuously Variable Transmission (CVT) clutch, drive belt, driven pulley inspection, maintenance, and replacement; final drive and differential service

Suspension System:

Front and rear suspension (independent front, solid rear axle), shock absorbers, control arms, bushings, service and adjustments

Steering System:

Handlebars, steering stem, tie rods, ball joints, rack and pinion (if applicable), service and adjustments

Braking System:

Hydraulic front disc brakes, rear drum brake (or disc depending on specific configuration), brake pads, calipers, master cylinder, brake fluid specifications, bleeding procedures

Electrical System:

Battery, starter motor, generator/stator, ignition coil, CDI unit, lights (headlight, taillight, brake light), fuses, switches, diagnostic codes

Cooling System:

Air-cooled engine with fan assist, cooling fins, fan shroud inspection and cleaning

Routine Maintenance:

Oil changes, filter replacements, spark plug inspection/replacement, air filter cleaning/replacement, chain adjustment, lubrication points

Troubleshooting:

Diagnostic flowcharts for common starting, running, and electrical issues

Engine Repair:

Top-end rebuilds, bottom-end overhauls, valve adjustments, decarbonization

Transmission Repair:

CVT clutch component replacement, drive belt replacement, gear oil change

Suspension And Steering Repair:

Shock absorber replacement, bushing replacement, tie rod end replacement, steering alignment checks

Brake System Repair:

Brake pad replacement, caliper service, brake line replacement, brake bleeding

Electrical Diagnostics:

Component testing (e.g., stator output, starter current draw), wiring harness inspection, troubleshooting electrical faults

Depth:

Comprehensive, from basic maintenance to full engine and component rebuilds

Detail Level:

Includes torque specifications, clearances, diagnostic values, and step-by-step instructions with diagrams

📊 Manual Specifications

Format:

PDF

Searchable:

Yes (typically)

Resolution:

High-resolution, suitable for printing

Type:

N/A (Digital Download)

Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Four-stroke, SOHC, 2-valve, air-cooled

Displacement:

348cc

Bore X Stroke:

83.0 mm x 64.5 mm

Compression Ratio:

9.2:1

Carburetor:

Mikuni BSR33, single

Ignition:

TCI (Transistor Controlled Ignition)

Starting System:

Electric starter

Horsepower:

Approximately 20-22 HP (estimated, not officially published for this model)

Torque:

Approximately 20-22 lb-ft (estimated)

Fuel Type:

Unleaded gasoline

Fuel Tank Capacity:

3.7 US gal (14 L)

🔧 Transmission

Type:

Yamaha Ultramatic® automatic (CVT)

Drive System:

Shaft drive

Gear Selection:

Forward, Neutral, Reverse

Features:

Engine braking system (part of Ultramatic)

Fluid Type:

Yamalube® 10W-40 or SAE 10W-40 API SG or higher transmission oil (refer to manual for exact specification and capacity)

📐 Dimensions

Length:

76.8 in (1950 mm)

Width:

43.7 in (1110 mm)

Height:

45.3 in (1150 mm)

Wheelbase:

49.2 in (1250 mm)

Ground Clearance:

10.5 in (267 mm)

Front Rack Capacity:

99 lb (45 kg)

Rear Rack Capacity:

176 lb (80 kg)

Curb Weight:

538 lb (244 kg)

Towing Capacity:

1102 lb (500 kg)

Weight Carrying Capacity:

275 lb (125 kg) total rider and cargo

🛡️ Safety Features

Atv Safety Standards:

Compliant with ANSI/SVIA 1-2010 and 2017 standards for ATVs

Braking:

Hydraulic disc front brakes, sealed drum rear brake

Engine Braking:

Integrated engine braking for downhill control

Lighting:

Dual 30W Krypton headlights, 8W/21W dual-function taillight/brake light

Ergonomics:

Comfortable seating position, accessible controls

💡 Technology Features

Features:

Basic instrumentation: speedometer, odometer, trip meter, neutral indicator, reverse indicator, oil change indicator.

Features:

Yamaha Ultramatic® transmission with centrifugal clutch and internal reducer gear providing natural engine braking.

🔧 Maintenance

Engine Oil Change:

Every 1,000 km (600 miles) or 6 months, whichever comes first. (Refer to manual for exact interval)

Air Filter Cleaning:

Every 100 hours or 1,000 km (600 miles), more often in dusty conditions.

Spark Plug Replacement:

At 3,000 km (1,800 miles) or 18 months. (Refer to manual for specific plug type and gap)

Cvt Drive Belt Inspection:

Every 100 hours or 1,000 km (600 miles) for wear and damage.

Engine Oil:

Yamalube 4-stroke motorcycle oil SAE 10W-40 API SG or higher, or equivalent.

Transmission Oil:

Yamalube 4-stroke motorcycle oil SAE 10W-40 API SG or higher, or equivalent.

Brake Fluid:

DOT 3 or DOT 4 hydraulic brake fluid.

Common Wear Items:

CVT drive belt wear, suspension bushings, wheel bearings, brake pads

Potential Performance Issues:

Carburetor clogging due to fuel varnish with infrequent use, potential for overheating in extreme conditions (though generally robust)

📚 Vehicle History

Manufacturer:

Yamaha Motor Company, known for innovation and reliability in motorcycles and powersports

Lineage:

The Grizzly Bruin 350 builds upon Yamaha's legacy of capable utility ATVs, offering a blend of the ruggedness of the Grizzly line with the user-friendly nature of the Bruin series. It served as a mid-range option for riders seeking versatility.

Manufacturing Location:

Typically manufactured in Japan or by Yamaha's international production facilities.

🏆 Awards & Recognition

Industry Standing:

Consistently rated as a reliable and capable utility ATV in its class by enthusiasts and publications.