Honda SH125 Manual page 198

DRIVE AND DRIVEN PULLEYWCLUTCH
TROUBLESHOOTING
Engine starts but scooter won't move
Worn drive belt
Damaged ramp plate
Worn or damaged clutch shoe
Broken driven face spring
Engine stalls or scooter creeps
Broken clutch shoe spring
Poor performance at
high
speed or lack of power
Worn drive belt
Weak driven face spring
Worn weight rollers
Contaminated pulley faces
10-5