140 merc help

[scott killmon]

Hello all i have recently replaced my 120 mercruier with a 140 after thinking that i threw a rod bearing. Come to find out after putting a load on the 140 the same knock returned with some other surprises. When i hit 2000 on the tach the engine started sliping and increased rpms. My question is i know know that the gimble bearing is what was causing the knock but what futher damage have i caused with the sliping? I read that the engine coupler was rubber spined and i did smell rubber burning. I also had a problem when installing the 140 the engine coupler was bigger than the 120 and was hitting my water intake hose, I adusted this hose a much as possible and from what i can see it is not touching. Im not at a comple loss by replacing the 120 the 140 runs great!! This was my first engine replacement, and will be my first gimble replacementm, any thoughts will help. Thanks agian

 

[Fishermark]

Re: 140 merc help

This was my first engine replacement, and will be my first gimble replacement

When you replaced the engine, did you align it? If not, you may have learned an expensive lesson. The engine needs to be properly aligned with the right tool when you pull and replace it. It sounds like you ruined your coupler with a misaligned engine.

 

[scott killmon]

Re: 140 merc help

Thanks for the quick response Fishermark. I didnt align the engine, and i didnt drop the lower unit either. I had one of my friends say i couldnt replace the engine without removing the lower unit, and someone else said that i could. The engine was not forced in at all, lined right up. If i find that i did trash the coupler can i put the smaller one from the 120 on?

 

[Fishermark]

Re: 140 merc help

While it is physically possible to pull and replace the engine without removing the outdrive it is unwise to do so. What happened to you is proof.

Here's what you need to do:
-Remove outdrive. If you have never done it, you will find it is easy to do. Put unit in forward gear, remove the six nuts holding the outdrive onto the bell housing, remove the trim rams from the stern and pull the outdrive off.

-Pull engine.

-Replace coupler.

can i put the smaller one from the 120 on?

I don't know. You need the appropriate one for your engine. I don't know what that one is.

-Replace engine.

-Align engine using proper alignment tool.

-Reinstall outdrive.