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I was just being cautious with end caps. I have never take them off before. rebuilt carbs, fuel pump, and did a link and sync when I got motor 6 years ago. Up until the end of last year motor has performed admirably. I looked at the tube and it all seems fine. Motor has always had a good...

Hey everyone. Posted an initial query, but now diving in deeper and wanted to post a more comprehensive thread. mid 80's 6c TOP 115. s# 6525632 Started out with 0 compression in cylinder 3. Powerhead off. Goal is to hopefully get engine going, but worst case, to learn a bit about it. I think...

Im gonna start a new thread. Ill post there. Thanks!

Scratch that. I just found it on the pic. Its under the flywheel

I am wondering if I should start another thread? I want to be conscientious of the forum. But, i'm well past the initial query of how to get powerhead off. I can go either way... I got some pics with a borescope that i am glad to post if helpful. I can see that 2 rings are off of cylinder 3...

I got powerhead off. I think I’m gonna start a new thread. Got water jacket and exhaust cover off. Not seeing any major cylinder damage from here, but missing, or can’t see two of the rings on that cylinder.

Thanks! Taking powerhead off to see if block is salvageable. No compression in C3. Looked inside and it looks like the rings, but this is new on my punch card. Hoping I can get away with a new piston and some work on the cylinder. She has been a great motor.

Hello all, Just doing a sanity check. i have the merc repair manual for this motor and am removing the powerhead. I have everything off..The only thing im not sure of, and want confirmation for, is the shift linkage. The only piece i saw to remove is the one included in the photo, taking...

More of the same...Is there some issue with quality control on these Mercury OEM parts? I got the Mercury water pump rebuild kit 18-3446 - Water Pump Kit 46-70941A3 Got the mercury impeller Drive key 28-8M0032835 Was reassembling water pump and spent 30 minutes trying to get impeller into...

I just found a suggestion that says the "lip of the seal should be facing the outside" in an online manual. I've always thought that with an oil seal of any type the lip would face the contained oil, but maybe its the other way around

I've ordered the 2 linked Ebay listings. They are both OEM mercury. I am assuming/hoping that the bushing was maybe an off brand, and that these will fit correctly together

Man. It is tough with these old parts. I ordered a shiftshaft seal from marineengine. OEM part from the parts list(all attached to my motor by serial number). Got it and tried to install it in the old bushing> I've never installed a shift shaft seal before. Tried to install using a mandrel...

Yeah.. Spent some more time with it, and it does go into reverse. Even with the shift shaft in without bushing or anything, its a little finicky. Sometimes it just doesn't want to go. I'm assuming maybe thats a worn out part of the gear box or something. Hopefully when I get the parts I can get...

It did shift into reverse before when I was using it, so I am assuming that is still the case. So if I'm able to get the shift shaft into the cam that is correct? I've never done it before. Trying to PASA(plan ahead, stay ahead) for when I actually resinstall in a week or 2

OK. I'm assuming this should stay in this topic. Still waiting for water pump to arrive. Shift shaft oil seal is leaky, so removed shift shaft and ordered a new seal and O-ring. Since I have some time before it arrives, I messed with trying to get the shift shaft seated again on the cam...

I am currently traveling for work, but plan to install the new waterpump when I'm back. Im getting concerned that, though the waterpump i installed might not be perfect, it is working, and that makes me think that the issue would be somewhere else. To this point I have -rebuilt water pump and...

I also seem to have an oil leak coming from the shift shaft. I don't want to throw any more money at this until I figure out the coolant issue(hopefully solved with new waterpump). I know I won't know for sure until i take this apart, but do the bushings tend to hold up? Would a leak typically...

by your definition it seems that the impeller/pump system is a bit weak. I was getting water, but nowhere near what he was getting. I'm including my video for reference. Looked like about 4-5" max. I also tried blowing air into the water tube and did get air coming out of engine block...

I was hoping that was the issue. I'm not getting enough water through the top spinning the drive shaft as in the video. I'm gonna rebuild waterpump again. Ordered an OEM part so should be able to use the base as well. I just can't figure out why the water pump isn't pumping enough water. the...

Just to make sure I'm clear, the impeller isn't sitting it the middle of the waterpump. As it spins, one side is closer to the side walls. Is this what you are saying? I guess my assumption was that the impeller would have the fins equidistant against the walls of the water pump