185s stuck flywheel

[ZeeZee]

Picked up a 1981 185s last March, and went from sitting to running thanks to this site!

Put the machine to work prepping the deer lease this past summer. Saved my butt a lot of walking and packing gear in and out, but she's better put to use ripping up the trails! Anyway, the honeymoon is over, and I have her torn apart for a top end rebuild.

Everything was going well until I decided to pull the flywheel to replace the lighting coil. I cannot get this flywheel to budge, and now the crankshaft is starting to mushroom!

First attempt with the flywheel puller, the flywheel did not budge, so I tipped the engine on it's side and filled the flywheel nut cavity with penetrating oil and let it soak overnight. No luck, flywheel still didn't budge.

Have since tried moderate heat to the flywheel, lots of heat to the flywheel, cycling heat/penetrating oil, and whacking the puller/flywheel with a with the puller bolt cinched tight. Nothing!

What else can I do?

I need a hail Mary as I think I screwed myself by applying too much heat and ruining the excitor coil. She's no longer ohming to spec. If I can't remove the flywheel this engine is dead!

Thanks!







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[shortline10]

Usually tension from the puller and a light wack of the will remove the most stubborn ones .
As a last resort as to not destroy the crankshaft I would just cut the flywheel off with a cut off wheel and replace everything .

[ZeeZee]

Dang, easier said than done. Looks like I'll have to cut away the left/flywheel cover first to cut away the flywheel. But I think I'm at that point. Then fingers crossed that I can repair the threads!

Looking at flywheels/covers on eBay. Were these all stored in saltwater ?

Thanks for the input.

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[ATC King]

Have you tightened the puller and left it to sit overnight?

In case it pops loose during the night, a box with rags or other soft items could be used to catch it if it falls off. That'll prevent the flywheel from hitting the floor and possibly cracking the magnets.