Tools Required: 

A #10 wrench A #8 allen wrench A new gearbox 

STEP 1: Use the #8 wrench to remove the 4 screws securing the gearbox 

Use the #10 wrench and #8 allen wrench to remove the screw securing the gearbox 

STEP 2: Replace the gearbox 

Securing the screws. 

STEP 3: Taking down the chain from the chain disc. 

Install the chain on the front gear first, then spin the wheel to set up chain on chain disc. 


Applicable to products: