Yamaha XC125 Service Manual page 157

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Model XC 125S
Spark Plug:
Type/Manufacturer U20FSR-U (N.D.)
Gap 0.6 "" 0.7 mm (0.024 _ 0.028 in)
Clutch Type Dry, Centrifugal Automatic
Transmlss_on :
Primary Reduction System Helical gear
Primary Reduction Ratio 43/14 (3.071)
Secondary Reduction System Spur gear
Secondary Reduction Ratio 36/14 (2.571)
Transmission Type V-Belt
Operation Automatic
Chassis:
Frame Type Steel Tube Underbone
Caster Angle 27 °
Trail 78 mm (3.07 in)
Tire:
Type Tubeless
Size (F) 3.50-10 4PR
Size (R) 3.50-10 4REINF
Cold Tire Pressure:
Maximum Load=X - 168 kg (370 Ib)
Front Rear
Up to 75 kg (165 Ib) load "_ 147 kPa 196 kPa
(1.5 kg/cm 2, 21 psi) (2.0 kg/cm 2, 28 psi)
90 kg (198 Ib) _ Maximum load _ 147 kPa 294 kPa
(1.5 kg/cm 2, 21 psi) (3.0 kg/cm 2 ' 43 psi)
Brake:
Front Brake Type Durm Brake
Operation Right Hand Operation
Rear Brake Type Drum Brake
Operation Right Foot Operation
Suspension:
Front Bottom Link Fork
Rear Unit Swing
Shock Absorber:
Front Coil Spring, Oil Damper
Rear Coil Spring, Gas-Oil Damper
Wheel Travel:
Front 85 mm (3.3 in)
Rear 70 mm (2.8 in)
Electrical:
Ignition System Full Transistor Ignition
Generator System AC Magneto
Battery Type or Model GM7CZ-3D
Battery Capacity 12V 7AH
Headlight Type Bulb
-X- Load is the total weight of cargo, rider, passenger, and accessories
7-2