Yamaha BRUIN 350 4x2 2004 2005 2006 Service Manual ATV Workshop Repair Owners Manual

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Stichworte: 2004 2005 2006 ATV BRUIN 350 4x2 Bruin Models Powersports Yamaha

Produktvarianten

Beschreibung

The Bruin 350 4x2 is a mid-size, rear-wheel-drive All-Terrain Vehicle (ATV) produced from 2004 to 2006. This first-generation model features an air-cooled, 4-stroke, SOHC single-cylinder engine displacing 348cc, paired with an automatic Continuously Variable Transmission (CVT) offering forward (Hi/Lo), neutral, and reverse gears. Known for its reliability and ease of use, the Bruin 350 is well-suited for trail riding and light utility tasks. Its design includes independent front suspension for enhanced comfort and hydraulic disc brakes on both the front and rear for effective stopping power. This comprehensive service manual provides detailed information for the repair, service, maintenance, troubleshooting, and diagnosis of the Bruin 350 4x2. It covers all major systems, including the engine, transmission, drivetrain, chassis, suspension, steering, braking, and electrical systems, with step-by-step instructions, technical specifications, and diagnostic procedures. The manual is an essential resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their vehicle, offering expert-level guidance for a wide range of maintenance and repair tasks.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

Bruin 350 4x2

Model Years Covered:

2004, 2005, 2006

Vehicle Type:

All-Terrain Vehicle (ATV)

Drive Type:

4x2 (Rear-wheel drive)

Generation

Generation Designation:

First Generation

👋 Introduction

Market Position

Atv Segment:

Mid-size utility ATV, popular for trail riding and light work

Competitive Analysis

Key Competitors:

Honda FourTrax 350, Polaris Sportsman 330/350, Arctic Cat 300/350

Key Features

Engine Type:

Air-cooled, 4-stroke, SOHC, single-cylinder engine

Transmission Type:

Automatic (CVT-style) transmission with forward, neutral, and reverse gears

Suspension Type:

Independent front suspension (IFS) for improved ride comfort and handling

Braking System:

Hydraulic disc brakes front and rear

Drive System:

Shaft drive, 2WD (4x2)

📋 Manual Details

Coverage Areas

Manual Coverage Scope:

Comprehensive (Repair, Service, Maintenance, Troubleshooting, Restoration, Diagnosis)

Page Count

Estimated Page Count:

Not Specified (Digital Download, size up to 5GB)

Manual Type

Manual Type:

Service Manual, Workshop Manual, Repair Manual, Owner's Manual

Language

Language:

English

Format

Digital Format:

PDF (Downloadable)

📖 Manual Coverage

Systems Covered

Engine Systems:

Engine removal/installation, cylinder head, valve train, piston, crankshaft, lubrication system, cooling system, starting system, ignition system, carburetor overhaul and adjustment, fuel system, exhaust system

Transmission Drivetrain Systems:

Transmission overhaul, gearbox, final drive, drive shafts, clutch operation and adjustment, automatic transmission service (if applicable)

Chassis Suspension Steering Systems:

Front suspension (A-arms, shocks, steering knuckles), rear suspension (swingarm, shock), steering system (handlebar, steering shaft, tie rods), wheel bearing service, hub assembly

Braking Systems:

Hydraulic brake system, brake caliper service, master cylinder overhaul, brake pad replacement, brake fluid specifications and bleeding procedures

Electrical Systems:

Wiring diagrams, lighting system, starting and charging system (stator, regulator/rectifier, battery), ignition system, fuses, relays, switches, electronic control unit (ECU) diagnosis (if applicable)

Fuel System:

Fuel tank removal/installation, fuel pump operation, carburetor cleaning and adjustment, fuel filter replacement

Cooling System:

Radiator service, fan operation, coolant specifications and capacity, water pump inspection and replacement

Body Frame:

Body panel removal and installation, frame inspection and repair (if applicable)

Procedures Included

Maintenance Procedures:

Routine checks, fluid level checks and top-ups, lubrication points, air filter cleaning/replacement, spark plug inspection and replacement, chain adjustment (if applicable)

Troubleshooting Procedures:

Diagnostic charts for common problems (e.g., starting issues, engine performance, electrical faults), symptom-based troubleshooting guides

Repair Procedures:

Step-by-step instructions for component disassembly, overhaul, and reassembly for all major systems

Restoration Rebuilds:

Detailed guidance for comprehensive engine rebuilds, transmission overhauls, and component restoration

Technical Depth

Technical Depth Level:

Expert-level (Suitable for professional technicians and advanced DIY enthusiasts)

Diagnostic Capabilities:

Detailed diagnostic procedures, electrical schematics, component testing methods

Specifications Tolerances:

Precise specifications for all adjustable components, wear limits, torque values, and measurement tolerances

📊 Manual Specifications

File Format

File Format Details:

Adobe PDF (.pdf), may be zipped (.zip) requiring extraction with WinZip or WinRAR

Print Quality

Print Save Options:

Printable, savable to any device (computer, tablet, etc.), no printing restrictions

Binding Type

Binding Type:

Not Applicable (Digital Download)

Paper Type

Paper Type:

Not Applicable (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Displacement:

348cc

Engine Type:

Air-cooled, 4-stroke, SOHC, 2-valve

Bore X Stroke:

83 mm x 64.5 mm

Compression Ratio:

9.2:1

Carburetor Model:

Mikuni BSR33/1, 33mm constant velocity

Ignition System:

CDI (Capacitor Discharge Ignition)

Starting System:

Electric starter

Performance

Horsepower:

Approximately 20-22 HP (estimated, actual figures may vary)

Torque:

Not specified in product info (typically around 20-22 lb-ft)

Fuel System

Fuel Type:

Unleaded gasoline

Fuel Tank Capacity:

3.2 US gal (12 L) including reserve

🔧 Transmission

Standard

Transmission Type:

Automatic Continuously Variable Transmission (CVT)

Gear Selection:

Forward (Hi/Lo), Neutral, Reverse

Features

Drive Engagement:

Automatic centrifugal clutch

Final Drive:

Shaft drive to rear wheels

📐 Dimensions

Exterior

Length:

75.2 in (1910 mm)

Width:

42.1 in (1070 mm)

Height:

44.1 in (1120 mm)

Wheelbase:

49.2 in (1250 mm)

Weights

Dry Weight:

549 lbs (249 kg)

Curb Weight:

Not specified (typically ~570-580 lbs with fluids)

Ground Clearance:

10.5 in (267 mm)

🛡️ Safety Features

Ratings

Safety Certification:

Not typically rated by governmental safety agencies like NHTSA/IIHS (ATVs are recreational vehicles)

Active Features

Braking System:

Hydraulic disc brakes front and rear

Throttle Limiter:

Thumb throttle with throttle stop screw (for limiting speed, especially for younger riders)

Passive Features

Lighting:

Dual 30W headlights, 8W brake/taillight

Operator Controls:

Handlebar design for rider control, ergonomic seating position

💡 Technology Features

Infotainment

Infotainment System:

Not applicable (basic ATV design, no digital infotainment)

Driver Assistance

Driver Assistance Features:

Not applicable (no electronic driver aids beyond basic throttle control)

Connectivity

Connectivity Options:

Not applicable

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 3000 km or 1 year, whichever comes first (refer to manual for specific hours)

Air Filter Cleaning:

Check every 500 km or 3 months; clean as needed

Spark Plug Check:

Check every 2000 km or 1 year

Valve Clearance Check:

Every 4000 km or 2 years

Fluid Specifications

Engine Oil Type:

Yamaha Genuine Yamalube 4 (10W-30) or equivalent API SG, SF, SE (or higher) classification, SAE 10W-30 recommended

Engine Oil Capacity:

1.70 L (1.80 US qt) without oil filter change; 1.80 L (1.90 US qt) with oil filter change

Brake Fluid Type:

DOT 3 or DOT 4 hydraulic brake fluid

Gear Oil Type:

Yamaha Genuine Gear Oil (hypoid gear oil GL-4, SAE 80) or equivalent

Gear Oil Capacity:

0.13 L (0.14 US qt) for final drive

Known Issues

Common Wear Items:

Brake pads, wheel bearings, tie rod ends, drive belts (CVT), shock absorbers

Potential Performance Issues:

Carburetor gumming if fuel sits for extended periods, CVT belt wear impacting acceleration

Electrical Quirks:

Less common, but potential issues with regulator/rectifier or stator if experiencing charging problems

📚 Vehicle History

Brand Heritage

Yamaha Atv Legacy:

Yamaha has a long history in powersports, pioneering many ATV innovations since the early 1980s.

Model Evolution

Bruin Introduction:

The Bruin 350 replaced the Grizzly 350 2WD in Yamaha's lineup, offering a more affordable and lighter-weight utility ATV.

Predecessors:

Yamaha Timberwolf 250, Yamaha Wolverine 350 2WD

Production

Manufacturing Location:

Primarily manufactured in Japan, with some components potentially sourced globally.

🏆 Awards & Recognition

Recognitions

Industry Awards:

No specific major awards typically highlighted for this utility model, valued for reliability and ease of use.

Ratings

Consumer Reviews:

Generally well-received for its intended purpose, praised for a comfortable ride and user-friendly operation.