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    1991 150 Black Max Water Pressure Gauge Install

    I have a 1991 Black Max 150 (ODO21340). I would like to install a water pressure gauge. I have the gauge and tube from a prior boat I would like to use if possible. My engine does not have a spot for installing a gauge so after researching my options it looks like I need to fit a tee in the...
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    150 Continues To Leak Oil After Valve Replacement

    My 2002 150 has the problem where it will not release the oil injection pressure when the engine shuts down and continues to push oil through the system. After researching the forum it seemed like my problem was likely the check valve on the engine beneath the starter. I replaced the valve...
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    2002 Mecury 150 - Blowing oil out of cylinder

    Well, I have never seen this before. I have a 2002 150 (carb.) that I bought really cheap with the knowledge it had run hot. I pulled the heads and all looked decent inside so I replaced gaskets. I was planing a rebuild but with how well everything looked I decided to see what she would do...
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    Cannot Get Shift Cable Properly Adjusted

    I have a 2002 Mercury 150 I have been fixing up. I have her running great and put it out to try in the water this past weekend. When I put it in reverse to back off the trailer I realized I had no reverse. I then tried forward to see if it would work. It would grind just a little, but not go...
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    Wiring older tachometer to Newer Engine

    I have a 1979 Skeeter Wrangler I am about to start using again. It originally had a 1980 Mercury 150. It now has a 2003 Mercury 150. I am wondering how to connect the wiring to the tachometer. It has a 5 pin connector from the tachometer that was used to connect to the 1980 control box. My...
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    What to use over Marine Tex hull repairs and worn gel coat spots?

    I have 1979 Skeeter Wrangler I have been doing some repairs to. I recently filled a few chipped areas in the hull with Marine Tex. I also have a few small places on the hull where the gel coat is completely worn off. What I am wondering is what can I use to cover these places? Is there a...
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    Determining what year model parts will work with other year models???

    I was wondering if anyone knows of any guide that details what parts will work with other year models. For instance, say you have a 2002 150 powerhead (carb). I would like to know what other year models this could be bolted to. Also, say you needed a lower unit. How would you know for sure...
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    Another Mounting Height Question

    I have searched for an answer to this question and I cannot seem to get anything definite. I have a 1979 Skeeter Wrangler I have redone. I picked up a Mercury 150 at a great price knowing it needed some work. I have it fixed and running great, but after mounting it I think I made a mistake...
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    Lower Unit Will Not Go Back On!!!!!

    So I took off the lower unit on my 2002 150 and replaced the impeller and gaskets with no problems. Today I went to put it back on and it will not go back on. I can get it about an inch from being on but it will not go any farther. I have turned the shaft, turned the flywheel, twisted...
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    Impeller installation questions

    I used to know this, but I have not been working on outboards for several years and I am now fixing one up. So, here are my questions about installing a new impeller. I have a 2002 Mercury 150 I am about to replace the impeller on. My question is - When you put the impeller in the housing...
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    Cylinder head bolts - Have to be replaced?

    My 150 says on the head not to use old bolts when replacing cylinder heads. Is this common? How important is it to replace them if nothing is wrong with them?
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    Dumb Torque question

    I am about to put a head a cylinder head on a 150 and the torque specs say 30 ft. lbs. + 90 degrees. I am sure there is a simple answer to what that means but I am unsure what it means. ???
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    2002 - 150 Head gasket (O-Ring) Question

    I am about to install a new set of cylinder head O-ring gaskets on a 2002 Mercury 150. After removing the head I noticed it appears something was applied where the head surface meets the block surface when it was initially installed. I have the o-rings, but I am wondering if I need to apply...
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    Compression test question

    Hello. I recently came across a 2002 Mercury 150 at a fairly cheap price. It needs several things, but before I start spending on it I wanted to check the compression and see if it is worth fixing. How can I turn it over so I can check the compression? It needs a key switch. If possible I...
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    Removing old paint and primer?

    Hello. I am currently restoring a Skeeter Wrangler. The owner before did a paint job over the original gelcoat. I am trying to remove all this paint and primer so I can apply my primer and paint unto the original gelcoat. My question is; Is there anything that can be applied to the old...
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    mercury 150 Won't go in gear

    Hello. I have a 1980 Mercury 150 that runs great. The problem is it will not go into forward or reverse. It had been kind of hard to put in reverse. I pushed it kind of hard to get in reverse and then it wouldn't go into any gear. I have checked all the connections to the shifter and they...
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