Replacing a drive belt on a moped is a simple process that should be done at the first sign of wear or damage to the belt. Drive belts usually have a long lifespan but it's a good idea to change them at least once every six months to insure that your moped operates at peak performance.
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Things you need
- Drive belt
- 1-inch wedge
- Allen key Sockets
- Socket wrench
Determine the proper size of the drive belt you are installing by using the old one as a reference or by referring to the owner's manual for your moped.
Remove the crank casing, which is normally located on the left side of the moped by the kick start lever, using the Allen key and socket wrench. Put bolts aside in a cup or bowl so you don't lose them.
Locate the variator assembly on the left and the clutch assembly that is attached to the drive axle on the right.
Remove the old drive belt by griping your fingers around the outer clutch bell and the inner wheel. Squeeze them together while gently turning clockwise, and use your fingers to work the drive belt down to the axle shaft until it sits in place at the lowest position.
Pinch the middle of the drive belt to keep it in place with your left hand while you continue to squeeze the clutch with your right.
Slide your right hand to keep the slack on the drive belt and pull the end off the variator using your left hand. Keep the variator in position until you've put a wedge in the drive belt's place.
Allow the clutch bell and inner wheel to separate back into position gently as you pull the drive belt off the clutch.
Hang the new drive belt on the clutch and squeeze the clutch bell and the inner wheel together once again.
Pull the drive belt into place until it is sitting on the drive axle at the lowest position, and then pull the other side of the drive belt around the variator as you remove the wedge.
Make sure the pulleys spin properly by rotating the belt with your hand. The belt will sit loosely in place until the transmission is engaged.
Start the motor to engage the transmission. The variator and clutch will go back into position and the belt will tighten as the motor spins. Stop the motor and reattach the casing. Make sure all bolts are tightened securely.
Tips and warnings
- If the belt slips when running the motor, you can try a smaller belt.
- The teeth of the belt should be on the inner part of the belt loop. Improper installation may cause the belt to snap.
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