MZ/MuZ Riders

I'll be taking the engine out of my bike tomorrow hopefully to replace the balance shaft which means splitting the crankcase halves.

I understand there is a special tool for holding the clutch, also I've seen one in the original manual for the actual process of splitting the cases. But I have to ask, can the operation be done without the tools?

I know the 251/301 engines can be teased apart with soft mallets gently beating on the halves very carefully, but the Rotax is a new beast to me. Can anyone advise?

Thanks, Dave.

On some bikes you can wedge a penny between the crank gear and the clutch gear and take it off with impact driver.
Cool.
Srinath.

watch the nuts and make sure you do not turn one the wrong way
i have not been in the rotax too deep but there may be some reverse threaded nuts in there
dave

I split it yesterday, not too bad all-in-all. Basically remove everything clutch-side, you can leave the alternator side stuff alone unless you need the gearbox or crank out.

Remove all the bolts from the alternator side, put a thin drift into 2 of the front and back bolt holes (all the way to the bottom), welly it with a soft mallet and the clutch side case will come away quite easily.

I'd recommend getting the clutch tool, I don't have one and it was a pig of a job getting the center nut undone. It's a standard thread by the way, not a left hander, there is a tab washer to contend with too.

Dave.