Source for a flywheel nut?

Gas Giant

Gas Giant

Petty Officer 1st Class
Joined
Aug 8, 2010
Messages
239
My flywheel nut has gotten boogered up, partly due to me, and partly due to the previous owner. The engine is a '61 Evinrude Lark III. I haven't had a whole lot of luck with an Internet search, largely because I haven't found a website with a parts diagram for an engine this old - so I don't know what part number it takes. I replaced the points under the flywheel on Saturday, but I don't think I'll be able to get the proper torque on this thing with the corners as rounded off as they are.

So, does anyone know where to get a flywheel nut for this engine, or have one they are willing to part with?
 
S

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Source for a flywheel nut?

I would think any well established BRP/OMC dealer could get you a nut.
A model number the only thing necessary.I do think the early 40s used the 35hp nut
with 60-65 ft lbs of torque your 61 likely uses the 40 hp nut with 100-105 torque.
Just found my 61 pts. catalog.
61 parts catalog shows 307965 nut.
 
Gas Giant

Gas Giant

Petty Officer 1st Class
Joined
Aug 8, 2010
Messages
239
Re: Source for a flywheel nut?

Great! Exactly the info I was looking for. Thank you!
 
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