Can anyone help me with removing a flywheel?

[saltchuckmatt]

Well, I tightened the puller as much as I could and it broke the flywheel off. Any suggestions from here?

Holy smokes.... That's crazy.

Is this a crack in the crank?

 

[tootallofwa]

Well what I saw was, that it's TOAST! Getting a stubborn flywheel removed can be trying. I don't think that I would have beat the HOLEY CRAP out of it. Sure it may be possible to save your engine...
2-Stroke 25's are pretty cheap. You still have to find the right flywheel.

 

[tootallofwa]

hum... why not grind away the top of the crankshaft to clean the threads down maybe 1/8 inch clean up the threads with the nut or use a proper die to recut them clean.

Clean up all that magneto !! check coils, plug wires condensers points etc...

dowload this book still good enough for your magneto service. find a used FW

https://www.socalaomci.com/library/johnson_service_manual_10th_edition.pdf

You need that 1/8" of threads. Triangle file and patients can fix those threads. Try a 3-fingered claw puller on what's left of the flywheel.

 

[jimmbo]

If there is a Crack at the end of the Crankshaft, I would be looking for another One. Get one for the 25, not an 18 or 20, as the Crank for the 25 was balanced better than the others, cause the 25's WOT Range was 1000 Rpms higher,
On the other hand it might be cheaper and easier to get another late 60s early 70s 25, and keep this one for Parts

I wonder how tight that Nut had been tightened the last time it was put back together

 

[racerone]

Post pictures of the threads on the crankshaft !----Remove coils and grind the hub so it comes off.

 

[FLATHEAD]

Well, I tightened the puller as much as I could and it broke the flywheel off. Any suggestions from here?

So much for brute force. Who knows what other surprises you’ll uncover.
I’d be looking for a replacement running motor if I were you.