Download Yamaha Bruin 350 YFM350 04-06 ATV Service Repair Workshop Manual PDF

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Basic Information Identification Make: Yamaha Model: Bruin 350 Model Code: YFM350 Model Variant: 2WD / 4WD Generation Generation Designation: First Generation (2004-2006) Codes Chassis Code: YFM350 Engine Code: YFM350 Introduction...

Tipo: Powersports

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Sku: 27410

Tag: ATV Bruin Models Yamaha

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Description

Basic Information
Identification
Make:	Yamaha
Model:	Bruin 350
Model Code:	YFM350
Model Variant:	2WD / 4WD
Generation
Generation Designation:	First Generation (2004-2006)
Codes
Chassis Code:	YFM350
Engine Code:	YFM350

Introduction
Market Position
Segment:	Mid-size utility ATV
Target Audience:	Recreational riders, farmers, utility users.
Competitive Analysis
Key Competitors:	Honda FourTrax 350, Polaris Sportsman 400/500, Suzuki King Quad 300/350, Kawasaki Bayou 300.
Key Features
Engine Type:	Air-cooled, 4-stroke, SOHC, 2-valve.
Transmission Type:	Automatic (Ultramatic) with forward, neutral, reverse.
Drivetrain Options:	Shaft drive, available in 2WD and 4WD.
Suspension:	Independent front suspension, swingarm rear suspension.

Manual Details
Coverage Areas
Applicable Years:	2004, 2005, 2006
Vehicle Types:	All-Terrain Vehicle (ATV)
Powertrain Variants:	2WD and 4WD models
Page Count
Estimated Pages:	Hundreds (Specific count not provided, but typical for a comprehensive service manual)
Manual Type
Type:	Service Repair Workshop Manual
Language
Language:	English
Format
Format:	PDF (Digital Download)

Manual Coverage
Systems Covered
Engine Mechanical:	Full engine overhaul, top-end and bottom-end components, piston, rings, valves, camshaft, crankshaft, cylinder head, cylinder block.
Fuel System:	Carburetor (Mikuni BSR33) specifications, jetting, cleaning, adjustment, fuel pump, fuel tank, fuel lines.
Ignition System:	CDI unit, ignition coils, spark plug specifications, timing, troubleshooting.
Cooling System:	Radiator, fan, thermostat, coolant specifications, flushing, bleeding procedures.
Transmission:	Automatic transmission (Ultramatic), gear shifting mechanism, oil specifications, internal components, service.
Drivetrain:	Shaft drive, differentials (front and rear), CV joints, drive shafts, propeller shafts, final drive oil specifications.
Suspension:	Front and rear suspension systems, shock absorbers, springs, bushings, adjustment, rebuilding.
Brakes:	Hydraulic brake system, front and rear disc brakes, brake calipers, master cylinders, brake lines, brake fluid specifications, bleeding procedures, pad replacement.
Electrical System:	Wiring diagrams, battery specifications, starter motor, alternator/stator, lighting system, switches, fuses, relays, troubleshooting.
Steering:	Steering system components, tie rods, steering knuckles, grease points, adjustments.
Frame And Body:	Frame inspection, chassis components, body panels, fenders, rack assembly, seating.
Procedures Included
Routine Maintenance:	Oil changes, filter replacements, spark plug maintenance, air filter cleaning/replacement, lubrication points, tire pressure checks.
Troubleshooting:	Systematic diagnostic procedures for common and uncommon issues, fault codes (if applicable), symptom-based troubleshooting.
Engine Repair:	Complete engine teardown, inspection, reassembly, and tuning. Valve adjustments, decarbonizing.
Transmission Service:	Transmission fluid service, seal replacement, clutch adjustments (if applicable for automatic).
Brake System Service:	Brake fluid flush and bleed, pad and rotor replacement, caliper service.
Electrical Diagnostics:	Use of multimeters, testing circuits, identifying shorts and open circuits, component testing.
Suspension And Steering Repair:	Ball joint replacement, tie rod end replacement, shock absorber service, wheel alignment checks.
Technical Depth
Depth:	Comprehensive, covering from basic maintenance to complete engine and transmission overhauls.
Detail Level:	Includes detailed torque specifications, component tolerances, measurement values, and step-by-step repair instructions.
Illustrations:	Likely includes diagrams, schematics, and photographic illustrations for clarity.

Manual Specifications
File Format
File Type:	PDF
Searchability:	Typically search-enabled text within the PDF for quick information retrieval.
Printability:	Printable pages for workshop use.
Print Quality
Quality:	High resolution for clear diagrams and text.
Binding Type
Binding:	N/A (Digital Download)
Paper Type
Paper:	N/A (Digital Download)

Engine Specifications
Primary Engine
Engine Type:	4-stroke, SOHC, 2-valve, single-cylinder
Displacement:	348 cc (21.2 cu. in.)
Bore X Stroke:	83 mm x 64.5 mm (3.27 in x 2.54 in)
Cooling System:	Air-cooled with fan assist
Compression Ratio:	9.2:1
Carburetor:	Mikuni BSR33, single
Starter System:	Electric starter
Oil Type:	Yamalube 4 (or equivalent) 10W-40, API SG or higher, JASO MA
Oil Capacity:	2.20 L (2.3 US qt) with oil filter change
Performance
Horsepower:	Approximately 21 HP @ 6000 RPM (Estimated, not officially published in all specs)
Torque:	Approximately 27 Nm (19.9 lb-ft) @ 5000 RPM (Estimated)
Fuel System
Fuel Type:	Unleaded gasoline (91 octane or higher recommended)
Fuel Tank Capacity:	12.0 L (3.2 US gal)

Transmission
Standard
Type:	Automatic (Yamaha Ultramatic)
Gear Selection:	Forward (Hi/Lo range), Neutral, Reverse
Drive System:	Shaft drive
Features
Engine Braking:	Features strong engine braking due to the Ultramatic design.
Final Drive Oil Type:	Yamalube Gear Oil (or equivalent) SAE 80 API GL-4
Final Drive Oil Capacity:	0.22 L (0.23 US qt)

Dimensions
Exterior
Length:	1990 mm (78.3 in)
Width:	1065 mm (41.9 in)
Height:	1165 mm (45.9 in)
Wheelbase:	1285 mm (50.6 in)
Ground Clearance:	180 mm (7.1 in)
Weights
Dry Weight:	260 kg (573 lbs) for 4WD model; 250 kg (551 lbs) for 2WD model
Curb Weight:	Approximately 270-280 kg (595-617 lbs) depending on configuration.
Cargo
Front Rack Capacity:	40 kg (88 lbs)
Rear Rack Capacity:	80 kg (176 lbs)

Safety Features
Ratings
Atv Safety Standards:	Designed to meet ANSI/SVIA standards for recreational ATVs.
Active Features
Braking System:	Hydraulic disc brakes front and rear for reliable stopping power.
Lighting:	Dual 30W headlights, 8W taillight/brake light for visibility.
Passive Features
Ergonomics:	Designed with rider comfort and control in mind, including handlebar grips and control placement.
Guarding:	Footwells and guards to protect rider from debris and moving parts.

Technology Features
Infotainment
Infotainment System:	N/A (Basic utility ATV, no integrated infotainment system)
Driver Assistance
Driver Assistance Features:	N/A (No electronic driver assistance features)
Connectivity
Connectivity Options:	N/A (No connectivity features)
Other Tech
Engine Management:	Basic CDI ignition system with automatic timing advance.
4Wd System:	On-Command 4WD system allowing manual selection between 2WD and 4WD.

Maintenance
Service Intervals
Engine Oil Change:	Every 1000 km (600 miles) or 6 months; check level more frequently.
Air Filter:	Clean every 500 km (300 miles) or 3 months; replace as needed.
Spark Plug:	Inspect every 1000 km (600 miles) or 6 months; replace as needed.
Final Drive Oil:	Change every 2000 km (1200 miles) or 12 months.
Brake Fluid:	Flush and replace every 2 years.
Grease Points:	Lubricate every 500 km (300 miles) or 3 months (refer to manual for specific locations).
Fluid Specifications
Engine Oil Specification:	Yamalube 4 (or equivalent) 10W-40, API SG or higher, JASO MA
Brake Fluid Specification:	DOT 3 or DOT 4 hydraulic brake fluid
Final Drive Oil Specification:	Yamalube Gear Oil (or equivalent) SAE 80 API GL-4
Coolant Specification:	Permanent type antifreeze coolant (50% solution) or Yamaha Yamalube Coolant
Known Issues
Carburetor Performance:	Mikuni BSR33 can sometimes experience wear or clogging, requiring cleaning or jetting adjustments.
Starter Clutch:	Some owners have reported starter clutch wear over time, leading to a grinding noise or difficulty starting.
Suspension Bushings:	As with many ATVs of this era, suspension bushings can wear and require replacement for optimal ride quality.
Cv Boots:	CV joint boots can be susceptible to tears, which can lead to damage if not addressed promptly.

Vehicle History
Brand Heritage
Yamaha Atv Legacy:	Yamaha has a long-standing reputation for producing reliable and capable ATVs.
Model Evolution
Bruin Introduction:	The Bruin 350 was introduced as Yamaha's mid-size utility ATV, offering a balance of power, comfort, and capability.
Predecessor:	Successor to models like the Timberwolf 250, and positioned below the Grizzly line.
Successor:	Eventually replaced by the more modern Grizzly 350/450 models.
Production
Production Period:	2004-2006
Manufacturing Location:	Primarily Japan (Yamaha Motor Co., Ltd.)