PDA

View Full Version : Changing a crank



matty moo
05-09-2006, 03:13 AM
how hard is it to change the crank and wat else should i change wile i do it,i do hav experence on care engins plz help and tips welcome

RS_Patrick
05-09-2006, 03:49 AM
Use a workshop manual, that should help you a lot in how to do it.
In any case you need new crankshaft bearings and oilseals and gaskets for the engine, maybe even need new bearings for the whole gearbox.
New piston rings might also be a good thing if your not replacing the cilinder kit dependingf on how much miles it has done.

williamr
05-09-2006, 09:34 AM
The main difference is that the bike motor is assembled end-on rather than from the bottom, with roller bearings instead of 1/2 shells. The oil/air seals are critical on a 2-stroke as any air leak will fuck up the mixture - possibly weakening it to the point where the motor won't run at all.

Heating the cases makes it easier to insert bearings and seals.

Rob

matty moo
05-10-2006, 04:38 PM
thanks people:happy: