- 1 Cover
- Lock ring
The engine rocker arm cover can be equipped with a decompression device which compresses the exhaust valve at the TDC (top dead centre), lowering it of abt. 1mm. during the starting phase. The lowering is adjusted by the gaskest thickness 2. Make sure that the lever turns for abt. half a stroke before it actuates the valve.
The use of decompression to stop the engine may cause serious damages.