Category:
Lightweight dual-sport/trials motorcycle.
Target Audience:
Off-road enthusiasts, urban riders seeking maneuverability, recreational riders.
Key Competitors:
Honda CRF250X, Kawasaki KLX250S, Suzuki DR-Z250.
Unique Selling Points:
Compact size, low seat height, accessible power delivery, agile handling, trials-inspired chassis.
Engine:
Top-end overhaul, piston and ring replacement, valve clearance adjustment, lubrication system, cooling system.
Fuel System:
Carburetor disassembly, cleaning, and adjustment; fuel pump; fuel tank and lines.
Ignition System:
CDI unit, ignition coil, spark plug replacement, timing.
Transmission:
Clutch operation, gearbox disassembly and reassembly, shift mechanism, lubrication.
Frame And Suspension:
Front fork (telescopic) maintenance and repair, rear shock absorber replacement, swingarm service, wheel bearing replacement.
Brakes:
Front and rear brake system inspection, pad replacement, caliper service, brake fluid bleeding, master cylinder overhaul.
Electrical System:
Wiring diagrams, charging system (stator, regulator/rectifier), lighting (headlight, taillight, indicators), battery service, starter motor.
Bodywork And Trim:
Fairings, fenders, seat, fuel tank removal and installation, decals.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment and lubrication, air filter cleaning/replacement, spark plug inspection, brake system checks.
Troubleshooting:
Diagnostic charts for common starting, running, and electrical issues.
Engine Repair:
Full engine disassembly, inspection, and reassembly for major internal components.
Suspension Rebuild:
Front fork seal replacement, oil change; rear shock absorber overhaul.
Electrical Diagnostics:
Component testing, wiring harness repair, fault finding using wiring diagrams.
Depth:
In-depth, suitable for professional technicians and advanced DIY mechanics.
Detail Level:
Step-by-step instructions with torque specifications, tolerances, and specialized tool requirements.
Engine Type:
4-stroke, SOHC, 2-valve, air-cooled
Bore X Stroke:
74.0 mm x 58.0 mm
Horsepower:
Approx. 18.2 HP @ 7,500 rpm (Note: Exact figures may vary by market and regulatory standards)
Torque:
Approx. 18.5 Nm @ 6,000 rpm (Note: Exact figures may vary by market and regulatory standards)
Carburetor:
Mikuni BSR28 (butterfly type)
Fuel Capacity:
7.2 Liters (1.9 US gal)
Fuel Type:
Unleaded gasoline
Safety Standards:
Meets applicable regulatory standards for motorcycles of its class.
Braking System:
Front: Disc brake, Rear: Disc brake.
Lighting:
Halogen headlight, LED taillight, front and rear turn signals.
Frame Construction:
Steel diamond frame, trials-inspired for rigidity and agility.
Display:
Digital LCD instrument cluster (Speedometer, Odometer, Trip Meter, Clock).
ABS:
Not equipped on the 2005 model.
Connectivity Features:
None (basic motorcycle electronics).
Engine Oil Change:
Every 3,000 km or 6 months, whichever comes first.
Oil Filter Replacement:
Every 3,000 km or 6 months (concurrent with oil change).
Valve Clearance Check:
First check at 1,000 km, then every 6,000 km.
Air Filter Cleaning:
Every 3,000 km (clean/replace as needed).
Spark Plug Replacement:
Inspect every 6,000 km, replace as needed (e.g., NGK CR7E or equivalent).
Chain Lubrication:
Every 1,000 km or as needed based on conditions.
Engine Oil Type:
Yamaha Yamalube 4 (10W-40) or equivalent API SG or higher, JASO MA certified.
Engine Oil Capacity:
1.5 Liters (without oil filter change), 1.7 Liters (with oil filter change).
Brake Fluid:
DOT 4 (for both front and rear brake systems).
Fork Oil Type:
SAE 10W or equivalent.
Fork Oil Capacity:
316 cc per leg.
Common Wear Items:
Chain and sprockets, brake pads, tires, air filter due to off-road use.
Carburetor Tuning:
May require occasional adjustment due to altitude or environmental changes.
Suspension Seals:
Front fork seals can be prone to wear with aggressive off-road use, leading to leaks.
Manufacturer:
Yamaha Motor Company, established 1955, renowned for innovation and performance in motorcycles and other powered vehicles.
Introduction Year:
2004 (Japan), 2005 (International markets).
Design Philosophy:
Designed to offer a unique blend of trail riding capability, urban maneuverability, and trials-like agility, making it accessible and fun for a wide range of riders.
Production Period:
2004–present (with updates).
