a – For cylinder; b – For cylinder exhaust flange; c – For rotary valve shaft; d – For ball bearing, rotary valve shaft; e – For oil seal rotary valve shaft (wihout oil pump), intake side; f – For oil seal rotary valve shaft (with oil pump), intake side; g – For inner oil seal rotary valve shaft, water pump side; h – For outer oil seal rotary valve shaft, water pump side; i – To press in the rotary seal; j – For rotary valve timing; k – To pull out the rotary seal - the inner steel bushing of the rotary seal has to be removed before demounting!; l – For fitting of piston pin circlip; m – For fitting of piston pin circlip (monohook circlip); q – To press in the rotary seal 850942 with the insertion jig