[deckmaster01]

hi people my mates got a fantic k-roo 1993 212cc,we have just rebuilt the engine today.started it up and it sounded like the points needed a little adjustment so we go the flywheel pully on it and removed it no problem,done the adjustement to the pointsand put the flywheel back on but i noticed he started the bike up without tightning the flywheel nut up,the points were still not right so we put the pully back on and now it wont budge and its bent the pully,any ideas to whats happened?thanks james

[B40RT]

what sort of puller are you using ?

[deckmaster01]

brought the puller from machine mart,its got 2 bolts that screw into the flywheel and a large center bolt with a pointed tip that you wind up and its ment to push against the cog that the flywheel slides onto.

[B40RT]

might be better with the appropriate one from http://www.trialsbits.co.uk/index.php?cPat...t=2a&page=3
if your not sure email Amanda who is really good and will fix you up.

[deckmaster01]

thanks mate will give that a go,do you think it might have got tight because the bike was started with the flywheel just being pushed on and not tightned up with the bolt?

[B40RT]

Hard to say, but they usually put a bit of resistance then come off with a crack.

[deckmaster01]

thats the mad thing bout it,we had allready taken it off once and it just popped of the bar with hardley any pressure

[hewson]

Do K roos have points ?

[deckmaster01]

points or timing i dont know the difference my mate is ment to be the expert i just ride bike lol cheers

[Lee Harris]

hewson, on Feb 23 2009, 07:53 PM, said:

Do K roos have points ?

no, no points on fantic since 1978. The stator is moved to adjust the timing. If you started the bike without tightening the crank nut , in the best case you ahve sheared the woodruf key. in the worst cast you have destroyed the crankshaft. Dont use two arm pullers as the yre sheiyt. get a puller from someone like steve goode. Its a later type he will know which one. Then look for the sheared key. The bit remaining in the crank slot will be stuck as it cold formed prior to shearing. DONT USE A HAMMER. Try heating with a hot air gun and use a SHARP centre punch to move it out the slot. if this doesnt work, i suggest you go to an engineering shop and let them remove it. Hammering the end of crankshafts is not to be done without thinking.

If the crank has cracked around the slot...you need a new one.
L

[deckmaster01]

thank you mate your discription is spot on,if the crank is broken will it still kick over,the bike still kicks but feels quite tight,cheers james

[Lee Harris]

yes it will turn over but wont start as the flywheel is rotating on the crank. I saw two go like that. one cost a woodruf key for 2 quid and the other ok the crank!

hope its just the key

L