freed evinrude...should I lube before testing?

[danacman]

hey fellows

I bought a 115 hp evinrude 1974 model for 4o bucks yesterday!!!!!!

The guy said it was frozen but was running good before it got put up in storage. With the help found here in the archives, I managed to free her up with little effort.
All I did was put wd40 in thru the spark plug holes and wiggled it free but I'm sure its gonna need more work before it fires up
Should I pour some kind of oil in the cylinder before trying to rev her up and check compression?

If so what kind?

 

[TommyA]

Re: freed evinrude...should I lube before testing?

I think some Marvel Mystery Oil would be a big help. I is a good all around penetrating lubricant.

 

[tmcalavy]

Re: freed evinrude...should I lube before testing?

Yup, Marvel MO or Kroil or PB Blaster. The idea is to lube the cylinder walls and maybe free up a stuck ring, if one is stuck. After you get it running, put some Seafoam in the gas to decarbon the insides.