- Place the Flex Lock in the neutral position so that spur gear is not engaged in the rack.
- Remove the plug, as shown below, so that you can spot the location of the set screw.
- Turn the spur gear until youcansee the set screw in the hole on the side of the gear box.
- Use a 2.5mm hex wrench to gently adjust the set screw in.

Plug
(2.5mm Set screw inside)