Chassis - Yamaha YZ250(W)/W1 Owner's Service Manual

Carburetor:
Type/Manufacturer
Spark plug:
Type/Manufacturer
Gap
Clutch type:
Transmission:
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Gear ratio: 1st
2nd
3rd
4th
5th

Chassis:

Frame type
Caster angle
Trail
Tire:
Type
Size (front)
Size (rear)
Tire pressure (front and rear)
Brake:
Front brake type
Operation
Rear brake type
Operation
Suspension:
Front suspension
Rear suspension
Shock absorber:
Front shock absorber
Rear shock absorber
Wheel travel:
Front wheel travel
Rear wheel travel
Electrical:
Ignition system
GENERAL SPECIFICATIONS
PWK38S/KEIHIN
BR8EG/NGK (resistance type)
0.5~0.6 mm (0.020~0.024 in)
Wet, multiple-disc
Gear
63/21 (3.000)
Chain drive
50/14 (3.571)
Constant mesh, 5-speed
Left foot operation
27/14 (1.929)
23/15 (1.533)
23/18 (1.278)
24/22 (1.091)
20/21 (0.952)
USA, ZA, AUS, NZ
Semi double cradle
26.9°
115 mm (4.53 in)
With tube
80/100-21 51M
110/90-19 62M
100 kPa (1.0 kgf/cm
Single disc brake
Right hand operation
Single disc brake
Right foot operation
Telescopic fork
Swingarm (link type monocross suspension)
Coil spring/oil damper
Coil spring/Gas, oil damper
300 mm (11.8 in)
315 mm (12.4 in)
CDI magneto
2-2
SPEC
EUROPE, CDN
←
27.1°
118 mm (4.65 in)
2 , 15 psi)
2