tire size YAMAHA YZ125LC 2005 Owners Manual

2-2
SPECGENERAL SPECIFICATIONS
Carburetor:
Type/Manufacturer TMXχ
38SS/MIKUNI
Spark plug:
Type/Manufacturer BR9EG/NGK (resistance type)
Gap 0.5~0.6 mm (0.020~0.024 in)
Clutch type: Wet, multiple-disc
Transmission:
Primary reduction system Gear
Primary reduction ratio 64/19 (3.368)
Secondary reduction system Chain drive
Secondary reduction ratio 48/13 (3.692)
Transmission type Constant mesh, 6-speed
Operation Left foot operation
Gear ratio: 1st 31/13 (2.385)
2nd 29/15 (1.933)
3rd 27/17 (1.588)
4th 23/17 (1.353)
5th 24/20 (1.200)
6th 23/21 (1.095)
Chassis:USA, ZA, AUS, NZEUROPE,CDN
Frame type Semi double cradle←
Caster angle 25.5° 25.6°
Trail 104 mm (4.09 in) 107 mm (4.21 in)
Tire:
Type With tube
Size (front) 80/100-21 51M
Size (rear) 100/90-19 57M
Tire pressure (front and rear) 100 kPa (1.0 kgf/cm2, 15 psi)
Brake:
Front brake type Single disc brake
Operation Right hand operation
Rear brake type Single disc brake
Operation Right foot operation
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (link type monocross suspension)
Shock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/Gas, oil damper
Wheel travel:
Front wheel travel 300 mm (11.8 in)
Rear wheel travel 315 mm (12.4 in)
Electrical:
Ignition system CDI magneto
2
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7-13
TUNSETTING
EC72N000
Drive and driven sprockets setting parts
EC721003
Tire pressure
Tire pressure should be adjust to suit the road
surface condition of the circuit.
9Under a rainy, muddy, sandy, or slippery condi-
tion, the tire pressure should be lower for a larg-
er area of contact with the road surface.
9Under a stony or hard road condition, the tire
pressure should be higher to prevent a flat tire.
Part name Size Part number
Drive sprocket
1 1
(STD) 13T 9383B-13218
Driven sprocket 2 2
47T
1C3-25447-00
(STD) 48T1C3-25448-00
49T1C3-25449-00
50T1C3-25450-00
51T1C3-25451-00
52T1C3-25452-00
Standard tire pressure:
100 kPa (1.0 kgf/cm
2, 15 psi)
Extent of adjustment:
60~80 kPa
(0.6~0.8 kgf/cm
2, 9.0~12 psi)
Extent of adjustment:
100~120 kPa
(1.0~1.2 kgf/cm
2, 15~18 psi)
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