Withdrawal
Drain some of the coolant and remove the fluid chamber housing cover.
Remove the body of the bimetallic spring, having previously disconnected the electrical wire from it.
Installation
Install the spacer with the convex surface towards the carburetor.
Install the bimetal spring housing by attaching its loop to the drive lever.
Tighten the screw securing the body of the bimetallic spring, aligning the marks on it and on the body of the starting device.
Attach an electrical wire to the body of the bimetallic spring.
If necessary, replace the washer of the cover fastening screw and the sealing ring of the bimetallic spring housing.
Install the bimetal spring housing cover.
Add coolant to the correct level and bleed air from the engine cooling system.