Remove the air filter.
Disconnect rod 1 (see picture) drive, connecting rod 2 and cable 3 of the throttle valve drive.

Move the intermediate lever 4 until it stops against the engine mount support 5.
Start the engine and adjust the length of connecting rod 2 so that at a given position of the intermediate lever the crankshaft speed does not change.
By acting on the intermediate lever 6, move the limiter 7 of the carburetors until it stops.
Press the accelerator pedal 8 until it touches the forced downshift stop 9, without pressing the forced downshift switch. In this position, adjust the length of the drive rod 1.
[The text is based on materials from the website «BMWMAN»]
