How to tighten the belts?

Loosen the screw on the synchromesh gear

1

Loosen the screw on the synchromesh gear which drives the corresponding belt you want to tighten.

Hold the belt’s end

2

Hold the belt’s end reaching out from the black sliding block with a clamp.

Loosen the screws on the sliding block

3

Loosen the screws on the sliding block with the L-shape wrench, then use a clamp to tighten the belt properly. Finally, lock the screws back on sliding block and synchromesh gear.