Also available:

For lapping the valves, it is most convenient to use a special mechanical device (reversible drill)

Also available:

Carburetor parts are well washed from deposits with solvents for nitro paints No. 646, 647, 647, 650, acetone or toluene, but strong solvents should not get on plastic or rubber parts.

Also available:

Check whether the size group of the piston set matches the size group of the cylinder liners

Also available:

Vertical downdraft carburetor with balanced float chamber. Two-chamber carburetor, each chamber has two diffusers

Also available:

Removing and installing oil cooler

The oil cooler is installed in front of the radiator of the engine cooling system and is connected to the lubrication system with rubber hoses