Can anyone help me with removing a flywheel?

tootallofwa

tootallofwa

Petty Officer 2nd Class
Joined
Feb 20, 2010
Messages
180
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

tootallofwa

Petty Officer 2nd Class
Joined
Feb 20, 2010
Messages
180
Crosbyman said:
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
Click to expand...
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

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
14,317
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
 
R

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
39,660
Post pictures of the threads on the crankshaft !----Remove coils and grind the hub so it comes off.
 
FLATHEAD

FLATHEAD

Rear Admiral
Joined
Dec 29, 2002
Messages
4,000
Calebc said:
Well, I tightened the puller as much as I could and it broke the flywheel off. Any suggestions from here?
Click to expand...
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.
 
C

Calebc

Cadet
Joined
Jun 9, 2026
Messages
7
saltchuckmatt said:
Besides being corroded on, your flywheel had to be rotten as well.

To much exposure to the atmosphere.
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It did sit outside for a number of years. I got the rest off and a used flywheel for $40 on eBay. I set the points so fingers crossed this fixes the spark problem.
 
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