sheared flywheel key

M

mrcrw009

Seaman
Joined
Dec 26, 2010
Messages
73
well i sheared my flywheel key on my 1976 35 hp evinrude rope start. the flywheel is junk because it cracked it but i think i can clean up the crankshaft and make it work but its not to pretty. does anybody know of a boat junk yard or something that might have a flywheel for me?
 
A

AlTn

Commander
Joined
Mar 9, 2010
Messages
2,813
Re: sheared flywheel key

look under the Top Secret Files for salvage yards
 
L

Lyle29464

Lieutenant
Joined
Mar 10, 2009
Messages
1,261
Re: sheared flywheel key

Think about why it failed.

1. Flywheel may not have been lapped in. ( you need to do this)
2. Key might have caused bad fit.
3. incorrect torque.

when you install lap the parts. Then put flywheel on with out key. Draw a line around crank. Put key in and set wheel back on. The line will be in the same place if the key is not holding the wheel up. Do a good job with the lapping compound. The keys main job is to line things up, not prevent movement. Dont worry about the damage in the key way. Just make sure it has no high spots.
 
M

mrcrw009

Seaman
Joined
Dec 26, 2010
Messages
73
Re: sheared flywheel key

ok thanks for the advice and i'm pretty sure it failed because i had the flywheel off many times while troubleshooting ignition issues so it was probably the torque considering i did not use a torque wrench.
 
G

Georgesalmon

Lieutenant Commander
Joined
Apr 14, 2012
Messages
1,793
Re: sheared flywheel key

If the flywheel spun you really have to lap it in as Lyle said. Had this happen pnce and didn't know about lapping until I spun it several more times and learned that lesson the hard way.
 
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