🏷️ Basic Information

Make:

Yamaha

Model:

Bruin 350

Vehicle Code:

YFM350

Model Year:

2004

Vehicle Type:

All-Terrain Vehicle (ATV)

Drive Type:

2WD and 4x4

Engine Configuration:

Single-cylinder, 4-stroke

👋 Introduction

Target Audience:

Owners seeking to perform their own maintenance and repairs, DIY enthusiasts, independent repair shops.

Advantage:

Provides factory-level detail and coverage for a specific model year, offering comprehensive guidance beyond basic owner's manuals.

Navigation:

Clickable chapters for easy navigation.

Searchability:

Full text search functionality for quick information retrieval.

Accessibility:

Instant download availability.

Support:

Free replacement of lost manuals.

📋 Manual Details

Primary Focus:

Service and Repair

Additional Coverage:

Maintenance, Troubleshooting, Diagnostics

Related Models Covered:

2003-2006 Kodiak (with Bruin 350 updates), potentially newer models

Total Pages:

596

Type:

Factory Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

Complete engine tear down, rebuild, lubrication, valve clearance, piston, connecting rod, crankshaft, camshaft, ignition, charging system, magneto, starter, flywheel, rotor, cylinder, head, intake, exhaust, crankcase, crankcase seals

Fuel System:

Carburetor (carb), carburetor adjustments (pilot jet, main jet, mixture screw, idle), fuel pump, fuel tank, fuel lines, fuel filter, PGM-FI (mentioned as a possible related technology due to Kodiak overlap, though Bruin 350 is typically carbureted)

Transmission Drivetrain:

Transmission overhaul, gearshift mechanism, primary reduction gear, reverse gear, drive shaft, clutch, clutch components, drive train maintenance

Suspension Steering:

Front forks, rear suspension, swingarm (swinger), struts, triple trees, linkages, wheel bearings, steering system, handlebars, steering column

Brakes:

Brake system maintenance, brake calipers, brake pads, brake rotors, brake lines, hydraulic brakes, parking brake

Electrical System:

Ignition system, charging system (rectifier, stator, regulator), battery, starter motor, lights (headlights, taillights), switches, error codes, wiring diagrams (implied by comprehensive coverage), electronic components

Bodywork Chassis:

Frame, body panels, fenders, seat, storage, plastic components, hull (if applicable to certain parts)

Maintenance:

Scheduled maintenance, fluid changes (engine oil, coolant, brake fluid), lubrication schedule, filter replacement, battery maintenance, tire pressure checks

Troubleshooting:

Comprehensive troubleshooting guide, diagnosing common problems (e.g., no spark, starting issues, performance problems), error code interpretation

Repair Rebuild:

Complete tear down and rebuild procedures for all major components, engine rebuilding, transmission rebuilding, suspension repair, brake service

Installation Replacement:

Installation and replacement of parts, accessory installation (implied), component replacement procedures

Depth:

Highly detailed, covering complete disassembly, inspection, repair, and reassembly of all major vehicle systems.

Diagnostics Support:

Includes information on error codes and troubleshooting steps for identifying and resolving issues.

Visual Aids:

Includes pictures and part diagrams to aid in identification and assembly.

📊 Manual Specifications

Format:

PDF

Searchability:

Searchable text

Printing:

No restrictions on printing

Saving:

No restrictions on saving/burning to disc

Quality:

High-quality digital reproduction of factory documentation

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

4-stroke, SOHC, 2-valve

Displacement:

348cc

Bore X Stroke:

83.0 mm x 64.5 mm

Cooling System:

Liquid-cooled

Compression Ratio:

9.2:1

Horsepower:

Approx. 21-23 HP (Estimate based on similar models)

Torque:

Not explicitly stated in product info, but typical for this displacement.

Fuel Delivery:

Mikuni BSR33 carburetor

Recommended Fuel:

Unleaded gasoline (87 octane or higher recommended)

Carburetor Jetting Details:

Manual covers pilot jet, main jet, mixture screw, and idle adjustments.

Recommended Engine Oil Type:

Yamalube 4 (or equivalent SAE 10W-30 or 10W-40 API SG or higher, JASO standard MA)

Engine Oil Capacity:

Approx. 2.2 Liters (with filter change)

Ignition System:

CDI (Capacitor Discharge Ignition)

Starting Method:

Electric start and manual kickstart

🔧 Transmission

Type:

Automatic (CVT - Continuously Variable Transmission)

Gear Selection:

Forward, Neutral, Reverse (F-N-R)

Drive System:

Shaft drive

Cvt Fluid:

Yamaha recommends specific CVT fluid for optimal performance and longevity. Consult manual for exact specification.

📐 Dimensions

Dry Weight:

Approx. 248 kg (547 lbs) for 4x4 models

Wet Weight:

Not specified in product info, but generally higher than dry weight.

Ground Clearance:

Approx. 256 mm (10.1 inches)

Length:

Approx. 1995 mm (78.5 in)

Width:

Approx. 1090 mm (42.9 in)

Height:

Approx. 1155 mm (45.5 in)

Wheelbase:

Approx. 1260 mm (49.6 in)

Tire Size Front:

AT25x8-12

Tire Size Rear:

AT25x10-12

🛡️ Safety Features

Safety Standards:

Meets ANSI standards for recreational off-highway vehicles.

Braking System:

Hydraulic disc brakes front and rear, increasing stopping power and control.

4X4 System:

On-command 4WD for enhanced traction in challenging terrain.

Lighting:

Dual 30W headlights and a 30W brake/taillight for visibility.

Ergonomics:

Designed for rider comfort and control during operation.

💡 Technology Features

Infotainment System:

N/A (ATV focus on utility and performance, not infotainment).

Traction Control:

Limited Slip Differential (LSD) or differential lock in 4x4 models (depending on exact configuration, covered in manual).

Diagnostic Ports:

Diagnostic capabilities via error codes, detailed in the manual.

🔧 Maintenance

Engine Oil Change:

Every 100 hours or 6 months, whichever comes first (refer to manual for specific conditions).

Air Filter Cleaning:

Check and clean every 20 hours, replace as needed. More frequent cleaning in dusty conditions.

Spark Plug Maintenance:

Inspect and clean/gap at 100-hour intervals, replace as needed.

Valve Clearance Adjustment:

Inspect and adjust every 100 hours.

Engine Oil Viscosity:

SAE 10W-30 or 10W-40 API SG or higher, JASO standard MA

Coolant:

Permanent type antifreeze (ethylene glycol based) with corrosion inhibitor. Refer to manual for specific mixture ratio and type.

Brake Fluid:

DOT 3 or DOT 4 hydraulic brake fluid. Do not mix types.

Common Problems:

Carburetor adjustments/cleaning (common with age/usage), occasional starter solenoid issues, general wear and tear on suspension components. Manual provides detailed troubleshooting for these and more.

Troubleshooting Support:

The manual's troubleshooting section is invaluable for diagnosing and rectifying common and uncommon issues, including 'no spark' scenarios.

📚 Vehicle History

Heritage:

Yamaha has a long-standing reputation for producing reliable and high-performance powersports vehicles, including ATVs known for their durability and engineering.

Development:

The Bruin 350 built upon Yamaha's experience with models like the Kodiak, offering a balance of performance and utility for recreational riders.

Production Years Covered By Manual:

Primarily 2004, with applicability to 2003-2006 Kodiak and potentially later Bruin models.

🏆 Awards & Recognition

Industry Recognition:

Yamaha ATVs are generally well-regarded for their reliability, durability, and performance in the powersports industry.