Vehicle Segment:
Sport ATV (All-Terrain Vehicle)
Target Audience:
Enthusiast riders, recreational users, and DIY mechanics seeking to maintain and repair their Yamaha Raptor 250.
Competitors:
Honda TRX250X, Kawasaki Mojave 250, Suzuki LT-Z250.
Vehicle Focus:
Designed for sporty trail riding and recreational use, offering a balance of performance and manageable power for its class.
Benefit To Owner:
Empowers owners to perform essential maintenance, diagnose issues, and carry out repairs, saving time and money on dealership service costs.
Systems Covered:
Engine, General Information, Transmission, Chassis, Lighting, Steering, Seat System, Clutch, Suspension, Locks, Brakes, Lubrication, Electrical System, Frame, Fuel System, Battery
Estimated Page Count:
Varies based on specific model year compilation, typically 300-500 pages for a comprehensive service manual.
Type:
Service Repair Workshop Manual
Format:
Digital (Adobe Acrobat PDF)
Engine:
Detailed disassembly, assembly, inspection, diagnosis, and repair of the 250cc engine, including top-end (cylinder, piston, valves), bottom-end (crankshaft, connecting rod, bearings), and timing components.
Transmission:
Information on the 5-speed constant mesh transmission, clutch operation, lubrication, and inspection of internal components.
Electrical System:
Wiring diagrams, ignition system, charging system (stator, rectifier/regulator), lighting circuits, starter motor, and diagnostic procedures for electrical faults.
Chassis Suspension Steering:
Front and rear suspension (shocks, springs, linkages), steering system components (handlebars, steering stem, bearings), and chassis alignment.
Brakes:
Front and rear brake systems (hydraulic calipers, master cylinders, brake lines, rotors), bleeding procedures, and pad replacement.
Fuel System:
Carburetor (likely Mikuni VM series) disassembly, cleaning, adjustment, fuel tank, fuel lines, and fuel filter.
Maintenance:
Regular maintenance checks, oil changes, filter replacements, spark plug servicing, chain adjustment, and general lubrication.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon problems, including engine performance issues, electrical faults, and brake system malfunctions.
Repair Overhaul:
Detailed step-by-step instructions for component disassembly, repair, reassembly, and adjustment for most major systems.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls, with detailed torque specifications and tolerances.
Format:
Adobe Acrobat PDF
Searchability:
Likely text-searchable, allowing for quick access to specific information.
Quality:
Designed for clear printing of text and diagrams.
Binding:
Digital download, printable for self-binding (e.g., 3-ring binder).
Recommendation:
Print on durable paper for workshop use; individual pages can be disposed of after use.
Engine Type:
Four-stroke, SOHC, air-cooled, single-cylinder
Bore X Stroke:
74.0 mm x 58.0 mm
Horsepower Estimated:
Approximately 16-18 HP (this is a general estimate, exact figures may vary and are usually not published by manufacturers for ATVs).
Torque Estimated:
Approximately 14-16 lb-ft (estimated).
Carburetor Type:
Mikuni VM26 (typical for this model)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Ignition System:
CDI (Capacitor Discharge Ignition)
Type:
5-speed constant mesh with automatic clutch (or manual clutch depending on specific sub-model, but most 250R variants are automatic clutch for ease of use).
Final Drive:
O-ring sealed chain
Clutch Type:
Wet, multi-disc (automatic clutch operation for primary engagement).
Reverse:
Not typically equipped on the Raptor 250.
Length:
Approximately 1785 mm (70.3 in)
Width:
Approximately 1170 mm (46.1 in)
Height:
Approximately 1050 mm (41.3 in)
Wheelbase:
Approximately 1250 mm (49.2 in)
Dry Weight:
Approximately 153 kg (337 lbs)
Fuel Capacity:
Approximately 10.0 L (2.6 gal)
General Safety:
ATVs are inherently off-road vehicles and require proper protective gear and adherence to safe riding practices. No formal crash ratings like cars.
Braking System:
Hydraulic disc brakes front and rear.
Throttle Limiter:
While not always present, some ATVs have throttle limiters for novice riders; not a standard feature emphasized for the Raptor 250.
Operator Safety:
Manual emphasizes use of helmet, eye protection, protective clothing, and avoiding riding on public roads or in unsuitable terrain.
Features:
Basic instrumentation: speedometer (often not present on base models), odometer, trip meter, neutral indicator, and essential warning lights.
Features:
No advanced electronic driver assistance systems. Focus is on mechanical performance and rider input.
Features:
No connectivity features.
Engine Oil Change:
Every 1000 km (600 miles) or 6 months, whichever comes first. Refer to manual for specific hours of use if applicable.
Air Filter Cleaning:
Clean every 500 km (300 miles) or more frequently in dusty conditions.
Spark Plug Replacement:
Inspect at 1000 km (600 miles), replace as needed. Recommended plug NGK CR7E or equivalent.
Chain Maintenance:
Inspect and lubricate chain every 200 km (120 miles) and adjust tension as needed.
Engine Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SG or higher, JASO MA compliant)
Engine Oil Capacity:
Approximately 1.70 L (1.8 US qt) without filter change; 1.80 L (1.9 US qt) with filter change.
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Common Wear Items:
Brake pads, tires, wheel bearings, chain and sprockets, and clutch components (especially in heavily used units) are common wear items.
Carburetor Tuning:
Carburetors can sometimes require fine-tuning or cleaning due to fuel quality or debris ingress, affecting idle and throttle response.
Yamaha Atv:
Yamaha has a long history of innovation in the ATV market, with the 'Raptor' nameplate signifying performance and sport capability.
Raptor Lineup:
The Raptor 250 was introduced as a smaller, lighter, and more accessible sport ATV compared to its larger siblings like the Raptor 660R and 700R, targeting a broader audience.
Manufacturing Origin:
Yamaha Motor Corporation, often manufactured in Japan or other Yamaha global facilities.
