Segment:
Utility/Recreational Snowmobile
Target Audience:
Owners and technicians performing maintenance and repairs on Yamaha Bravo 250 snowmobiles.
Competitors:
Other snowmobile manufacturers' models from the same era (e.g., Ski-Doo, Arctic Cat, Polaris) in the utility segment.
Manual Value:
Provides essential factory-level information for accurate and efficient servicing, saving time and money.
Diagnostic Capability:
Empowers users to diagnose and resolve issues effectively, enhancing reliability.
Maintenance Efficiency:
Streamlines maintenance tasks, ensuring optimal performance and longevity of the snowmobile.
Engine Overhaul:
Complete engine teardown, inspection, repair, and reassembly procedures for the 250cc engine.
Fuel System:
Carburetor adjustment, cleaning, and overhaul; fuel pump operation and testing; fuel line routing and inspection.
Ignition System:
Ignition coil testing, spark plug specifications, CDI unit diagnostics, and timing adjustments.
Cooling System:
Radiator inspection and cleaning, coolant specifications, thermostat operation, and fan system testing.
Drive System:
Clutch inspection and adjustment (primary and secondary), drive belt inspection and replacement, chain and sprocket maintenance.
Suspension:
Front and rear suspension component inspection, lubrication, and adjustment; shock absorber specifications and testing.
Brakes:
Brake pad inspection and replacement, caliper service, brake fluid specifications and bleeding procedures, parking brake adjustment.
Electrical System:
Wiring diagrams, battery testing and maintenance, lighting system troubleshooting, starter and charging system diagnostics.
Steering:
Handlebar and steering post inspection, linkage lubrication, and adjustment procedures.
Bodywork:
Panel removal and installation, seat maintenance, and plastic component repair.
Scheduled Maintenance:
Detailed maintenance schedules for routine servicing, including oil changes, filter replacements, and lubrication points.
Troubleshooting Guides:
Comprehensive diagnostic flowcharts and symptom-based troubleshooting for common and uncommon issues.
Repair Instructions:
Step-by-step instructions with clear diagrams for all major repair and replacement operations.
Tune Up Procedures:
Guidance on performing full tune-ups, including carburetor, ignition, and engine adjustments.
Technical Specifications:
Provides all essential technical data, torque specifications, clearances, and fluid capacities.
Depth:
Covers basic maintenance to complete engine and transmission rebuilds, including advanced electrical diagnostics.
Engine Type:
2-stroke, air-cooled
Displacement:
Approximately 249cc (specific variant may vary slightly)
Bore X Stroke:
Refer to manual for specific dimensions
Compression Ratio:
Refer to manual for specific ratio
Carburetor Model:
Single Mikuni VM34SS or similar (verify with manual)
Horsepower:
Approx. 20-25 HP (estimate, actual may vary)
Torque:
Refer to manual for specific torque figures
Fuel Type:
Unleaded gasoline (typically 87 octane minimum)
Fuel Mixture:
Typically 50:1 ratio of unleaded gasoline to 2-stroke oil (verify with manual)
Oil Type:
API-TC rated 2-stroke oil (verify with manual for specific Yamaha recommendations)
Transmission Type:
CVT (Continuously Variable Transmission) with forward, neutral, and reverse
Drive Mechanism:
Drive belt to driven clutch
Gear Ratios:
Variable, managed by CVT system
Clutch Type:
Centrifugal clutch (primary) and roller clutch (secondary)
Overall Length:
Refer to manual for specific dimensions
Overall Width:
Refer to manual for specific dimensions
Overall Height:
Refer to manual for specific dimensions
Dry Weight:
Approx. 400-450 lbs (estimate, actual may vary)
Weight Distribution:
Refer to manual for specific distribution data
Crash Test Data:
N/A (Snowmobiles are not typically crash-tested like automobiles)
Braking System:
Hydraulic disc brake (rear), mechanical parking brake
Throttle Safety:
Self-returning throttle lever with safety lockout
Lighting:
Headlights, taillight/brake light
Hood Safety:
Securely fastened hood with latches
Engine Stop Switch:
Handlebar-mounted emergency engine stop switch (lanyard type on some models)
Display Type:
Basic analog gauges (speedometer, tachometer, engine temperature) and indicator lights.
N A:
No electronic driver assistance features expected in this model era.
N A:
No modern connectivity features like Bluetooth or GPS are standard.
Oil Change Interval:
Refer to manual; typically annually or after a specified number of operating hours/miles.
Drive Belt Inspection:
Every 500-1000 miles or annually; replacement as needed.
Spark Plug Replacement:
Refer to manual; typically every 1000-1500 miles or as needed.
Coolant Type:
Ethylene glycol based antifreeze, typically 50/50 mix with distilled water.
Brake Fluid Type:
DOT 3 or DOT 4 (verify with manual)
2 Stroke Oil Spec:
API-TC rated, JASO FD certified 2-stroke oil recommended for optimal performance and lubrication.
Carburetor Fouling:
Common with older 2-stroke engines due to fuel quality or improper storage; requires cleaning and adjustment.
Drive Belt Wear:
Belts can degrade over time and with heavy use, leading to slipping or breakage.
Ignition Component Failure:
CDI units, coils, and stators can fail over time, leading to no-spark conditions.
Cooling System Clogging:
Radiator and cooling fins can become clogged with debris, leading to overheating.
Manufacturer:
Yamaha Motor Corporation, Japan
Legacy:
Yamaha has a long history of innovation in powersports, including snowmobiles, motorcycles, and marine engines.
Bravo Series:
The Bravo series is known for its reliability and utility, often favored for work and trail riding in demanding conditions.
250Cc Era:
The 250cc engine size provided a good balance of power and fuel efficiency for its class.
Manufacturing Origin:
Likely manufactured in North America (e.g., Canada or USA) for the North American market, based on Yamaha's snowmobile production facilities.
Production Period:
The Bravo 250 was produced for a significant period, with the 2007-2011 range representing later iterations.
