windsurfer
Registered user
In the process of checking the valve clearances found oil leaks from the cover gasket and the holding down screws. Much has been recorded about this failing and potential solutions. Believe I have seen some reference to the screws being modified but the screws supplied in the BMW gasket set are identical with existing. There is a significant difference in the actual gaskets themselves, they are approx. 1mm thicker which should result in a tighter squash when torqued down. The numbers embossed on the old and new outer Rotax gaskets are: 630561new and 630562 new. and for the inners are: 631570 old and 631571 new. Rainbow BMW Rotherham were extremely helpful and posted out in double quick time excellent service. Now optimistic that the leaky rocker cover seal will be history.