Why can't I get my lower unit off?

[gillyzonker]

I have a 60's model 3.9hp merc. I loosened both bolts that hold the lower unit in place and put the engine in F. However, the lower unit doesn't come off easily. Any recommendations/advice? Should I use some gentle persuasion in the form of a mallet?

 

[Laddies]

Re: Why can't I get my lower unit off?

It sounds like it's stuck on the driveshaft, with a block of wood for a dampener tap down on the cavitation plate.

 

[*EdC*]

Re: Why can't I get my lower unit off?

Gillyzonker..........
Laddies is a real pro. Been around helping people on this forum for a long time.
The only thing I can add, is to go "easy" Try to tap it where it's thicker metal. It's is very easy to crack the outer edges. I've done it!

 

[GregE]

Re: Why can't I get my lower unit off?

Could have corrosion in it too. I had a 1973 Merc 9.8HP my grandfather had. It was perfect when it went into storage for years, in a house that was flooded 3-4 feet deep during a hurricane 4 years ago. Salt water got into it and no one thought to do a routine flush after that storm, so it was 4 years later when I got it and found out how corroded it was from that.