Remove the temperature switch wire and connect it to ground.
Lift and remove the plastic cover (36).
Bring the engine speed up to 2500 rpm by lifting the throttle lever. Then use a small screwdriver through the adjustment slot on the body of the starting device - the drive lever (86). Press in the direction of the engine until you feel a noticeable stop.
Caution: Do not go over the stop.
Release the throttle lever while keeping the throttle lever on the stop.
The trigger lever (85) now rests on the stop with two projections of the stepped washer (87), also in the Pull-down position. Other parts: 88 - leash.
Check the warm engine speed and CO content in the exhaust gases using the instruments.
(Original material on the website MercedesMan)
If the set value is not reached, adjust the speed with the adjusting screw (41). Screwing in increases the speed, unscrewing it decreases it.
Note: The warm engine speed adjusting screw is the shorter of the two screws. If there is no adjusting screw, the speed is adjusted by shortening it (the number of revolutions drops) or extensions (the number of revolutions increases) connecting rod of the starting device. In this case, 1/2 turn corresponds to a change in the number of revolutions of approximately 200 rpm.
Adjust the CO content in the exhaust gases of a warm engine.
Remove the safety plugs by screwing a wooden or tin bolt of the appropriate diameter into the plug, and then pulling out the bolt and the plug with pliers.
Adjust the exhaust gas composition using the adjusting screw for the exhaust gas composition of a warm engine, turning it in makes the mixture richer, turning it out makes it leaner.
Insert a new blue safety plug.
Release the leash lever.
Check the heating of the incoming air.
Check the electric heating of the intake pipe.
Connect the temperature switch wire.