Yamaha BR250 BR250F BR250TJ Bravo Snowmobile Complete Workshop Service Repair Manual 1981 1982 1983 1984 1985 1986 1987 1988 1989

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Basic Information Identification Make: Yamaha Model: Bravo Model Variant: BR250, BR250F, BR250TJ Product Type: Workshop Service Repair Manual Product Format: PDF Download Introduction Market Position Target User: Yamaha Bravo owners...

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类型: Snowmobile

斯库: 6849

标签: 1981 1982 1983 1984 1985 1986 1987 1988 1989 BR250 BR250F BR250TJ Bravo Bravo Models Powersports Snowmobile Snowmobiles Yamaha

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Description

Basic Information
Identification
Make:	Yamaha
Model:	Bravo
Model Variant:	BR250, BR250F, BR250TJ
Product Type:	Workshop Service Repair Manual
Product Format:	PDF Download

Introduction
Market Position
Target User:	Yamaha Bravo owners and independent snowmobile repair shops seeking comprehensive repair and maintenance guidance.
Competitive Analysis
Value Proposition:	Provides essential technical data and procedures that would otherwise be unavailable to the average owner, saving on costly dealer repairs.
Key Features
Features:	Detailed diagnostic charts, exploded views of components, accurate torque specifications, wiring schematics.

Manual Details
Coverage Areas
Model Years Covered:	1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989
Page Count
Estimated Pages:	Estimated to be comprehensive, typically 300-500+ pages for this era of Yamaha snowmobile manuals.
Manual Type
Type:	Complete Workshop Service Repair Manual
Language
Language:	English
Format
File Format:	PDF

Manual Coverage
Systems Covered
Engine System:	Complete engine overhaul, top-end rebuild, carburetor tuning, fuel system components, cooling system (air-cooled specifics).
Drivetrain System:	Clutch operation (primary and secondary), chaincase lubrication and adjustment, track drive system, rear suspension.
Electrical System:	Ignition system, lighting, starter system, battery charging, wiring diagrams, component testing.
Chassis And Body:	Frame inspection and repair, ski and spindle assembly, handlebar and steering components, seat and body panel removal/installation.
Brakes:	Brake system inspection, hydraulic fluid replacement, caliper and lever servicing.
Suspension And Steering:	Front ski suspension, rear torsion spring suspension, steering linkage and cables.
Procedures Included
Routine Maintenance:	Oil checks, lubrication points, spark plug replacement, air filter cleaning/replacement, track tension adjustment.
Troubleshooting:	Diagnostic procedures for common starting, running, and performance issues, symptom-based troubleshooting guides.
Repair And Overhaul:	Detailed step-by-step instructions for engine disassembly, component replacement, and reassembly.
Special Tools:	Identification of required special tools for specific tasks.
Technical Depth
Depth:	Comprehensive, covering everything from basic adjustments to complete engine and drivetrain rebuilds. Includes detailed torque specifications and clearances.

Manual Specifications
File Format
Quality:	High-resolution, searchable PDF with clear text and diagrams.
Print Quality
Printability:	Printable on standard home or office printers for easy reference.
Binding Type
Binding:	N/A (Digital PDF Download)
Paper Type
Paper:	N/A (Digital PDF Download)

Engine Specifications
Primary Engine
Engine Type:	Two-stroke, air-cooled single-cylinder (specific displacement may vary slightly by sub-model designation, but typically around 250cc class).
Bore X Stroke:	Refer to manual for exact specifications (typical for this class might be around 68mm x 68mm, but verification is crucial).
Cooling System:	Forced air-cooled, utilizing a fan shroud and cooling fins.
Performance
Horsepower Range:	Typically in the 20-30 HP range for this era and engine size, but consult manual for exact figures.
Torque Output:	Refer to manual for specific torque curves and peak output.
Fuel System
Carburetion:	Mikuni VM series carburetor (specific model number like VM30 or VM32 to be confirmed in manual).
Fuel Type:	Unleaded gasoline (typically 87 octane or higher, premixed with 2-stroke oil).
Oil Mixing Ratio:	Yamaha recommended 2-stroke oil to gasoline ratio (typically 40:1 or 50:1, consult manual for exact ratio).

Transmission
Standard
Type:	Automatic Continuously Variable Transmission (CVT) with centrifugal clutch system.
Optional
Gearbox:	N/A (CVT is standard)
Features
Clutch Engagement:	Variable engagement speed based on RPM, managed by primary and secondary clutch weights and springs.
Drive System:	Chain drive to the track.
Maintenance
Chaincase Oil:	Specific chaincase oil type and capacity, likely a gear oil or heavy-duty lubricant (e.g., SAE 80 or 90 gear oil, check manual for exact specification and part number).

Dimensions
Exterior
Overall Length:	Refer to manual for exact dimensions (typically around 80-90 inches).
Overall Width:	Refer to manual for exact dimensions (typically around 35-40 inches).
Weights
Dry Weight:	Refer to manual for exact dry weight (likely in the 350-400 lbs range).
Fuel Capacity:	Refer to manual for exact fuel tank capacity (typically 4-6 gallons).

Safety Features
Ratings
Crash Test Data:	N/A (Snowmobiles are not subjected to standard automotive crash testing).
Active Features
Braking System:	Mechanical disc brake operated by a handlebar lever, acting on a caliper mounted to the drive shaft.
Passive Features
Kill Switch:	Standard engine kill switch on the handlebar for immediate shutdown.
Throttle Safety Features:	Throttle limiter and return spring for safe operation.

Technology Features
Infotainment
Display:	Basic analog gauges for speedometer, tachometer (if equipped), fuel level, and warning lights.
Driver Assistance
Features:	N/A (No electronic driver assistance features typical for this era).
Connectivity
Features:	N/A (No electronic connectivity features).

Maintenance
Service Intervals
Oil Change Chaincase:	Recommended every 1-2 seasons or per hour of use (check manual for exact interval).
Spark Plug Replacement:	Typically every 100-200 hours of operation or annually (consult manual).
Clutch Inspection:	Recommended annually for wear and proper function of primary and secondary clutches.
Fluid Specifications
Chaincase Fluid Type:	Yamalube Gear Oil Hypoid API GL-5 SAE 80W-90 or equivalent specified by Yamaha.
Coolant Type:	N/A (Air-cooled engine)
Brake Fluid Type:	DOT 3 or DOT 4 hydraulic brake fluid (confirm specific type in manual).
Known Issues
Carburetor Fouling:	Common in older two-stroke engines due to fuel quality and oil mixtures, requiring regular cleaning and adjustment.
Clutch Belt Wear:	CVT belts are wear items and require periodic inspection for cracking, fraying, and proper tension.
Track Tension Adjustment:	Track can loosen over time, requiring adjustment to prevent excessive wear and slippage.
Suspension Bushings:	Wear in suspension bushings and ball joints can lead to imprecise steering and instability.

Vehicle History
Brand Heritage
Yamaha Motorsports:	Yamaha has a long and rich history in motorsports, dating back to its motorcycle and marine divisions, translating into reliable and well-engineered snowmobile products.
Model Evolution
Bravo Lineage:	The Bravo line was known for its utility and reliability, often positioned as a workhorse snowmobile suitable for trail riding, utility tasks, and entry-level riders. The 250cc engine provided adequate power for its intended purpose.
Production
Manufacturing Era:	The 1981-1989 production run signifies a stable and proven platform for the Bravo model during that decade.

Awards & Recognition
Recognitions
Industry Standing:	While specific awards are not typically publicized for individual model years of utility snowmobiles, the Bravo line was generally well-regarded for its durability and value in the utility segment.