Hey

Got another problem: if i tighten all bolts of the case halfs the crank does not spin easy, they spin but you have to turn pretty hard. The same is with the gears.

If i don't have the bolts tightened it runs as smooth as it should.

Maybe someone knows whats to do

Greets

Dani

Edited September 22, 201312 yr by tirolean

You do not have the crank pressed all the way on the bearing/and or centered. You might get by with a couple of well placed hits with a mallet on the end of the crank. Do not screw up the threads in haste.

Thanks for the fast answer. But why don't the gears spin hard too?

As said above. your bearings are not fully in place, probably the same with gear box, or you have put a thrust washer in the wrong place.

I assume you are using a gasket in the joint.

TLTEL

Crank and trans two different issues.

Also do you have the transmission in neutral?

Yes, i do have a gasket between both halfes.

trabsmission is in neutral

The crankbearings are in place correctly. I had an eye on that

Bearings in the case first? Bearings have to be on the shaft all the way and centered.

Yes, i put the bearings first in the case, so that they line up with the case. and then i put the other half on (i put in the kick start feather correctly) and it went in normal. it spins normal when i don´t have the bolts tightened but if i tighten them, it´s hard to turn the crank and the gears. it also doesn´t make a gap when i loosen the bolts

Do you already have the clutch (primary gear) in place? And why the rebuild in the first place? Just trying to under stand where you are at with this.

Yesterday i took the engine togheter, to see if it's dense. Then i also tried with the skickstarter to pull it down. And i felt like it isn't harder than before. So may it be right, that the crank goes harder to turn than in another engine? The bearings are also harder to turn then for example the ones at my yz 250.

I rebuilt it because the bearing of the 5and6 gear failed.

Thanks again!

Just the crank alone should have spun fairly free.