Maintenance & Technical > KX500 Original

Repeatedly shearing flywheel key

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mxaniac:
If it is a tapered shaft then the key is for alignment only.  As mentioned it needs lapped and properly torqued.

kxpegger:

--- Quote from: Motorrad on April 27, 2012, 02:45:43 PM ---
--- Quote from: kxpegger on April 27, 2012, 01:18:45 PM ---I'm just guessing but either the key slots are out of spec or it's a poor quality key. You may be able to find an oversize key and file it down for a nice snug fit?

--- End quote ---

flywheel key doesnt hold on the flywheel.. the taper does...     Keyway is just for alignment.


Lap your flywheel to your crank..  Valve lapping compound works great.

--- End quote ---
No more just guessing posts from me! Lol!

martyestes:
Just an update.  I gave up on the Steahly weight, carefully cleaned the end of the crank and inside of the flywheel and added about 10% extra torque with the torque wrench.  Viola - it worked.

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