Flywheel removal

it is possible to remove flywheels without a flywheel holder,make sure you have the right puller for your machine,screw in puller untill it bottoms,then use a air or electric impact on the bolt,you can hold the flywheel with your hand by using this method,allso if you have a adjustable impact you can set it on the lowest setting and install the flywheel nut.be carefull not to break off the end of the crankshaft.i allso like to put blue locktite on the crank threads so the nut dosnt come loose.another tip to make the flywheel deat against the crankshaft is to remove the flywheel key and put some valve lapping compound on the crank taper then put the flywheel on and turn it with slight pressure this will lap the flywheel to the crank.be sure to clean all lapping compound before reassembley.

Excellent info, thanks for posting. Especially good is the part about lapping the flywheel taper to match the crankshaft taper. I think a lot of guys don't realize that it's actually the taper that holds the flywheel in place... the key is just an alignment piece and is not strong enough to hold the flywheel (notice that there is NO key on the other side of the crank to hold the primary gear in place... just the taper!).

If an engine is having trouble with the flywheel/nut coming loose and/or shearing the key... it's because of a poorly lapped taper, not because of a weak key or a loose nut. The true 'cure' is to lap the flywheel, not to over tighten the nut. You can actually split the flywheel doing that! Thanks again. Bravo!!