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  1. HenHouse

    Force 120hp Major Overheat

    Test Results / Update The test at the lake went good but not perfect. The engine kept cool at idle and just cruising around. The pressure was good and consistent out of the exhaust relief ports. It only overheated once and that was at WOT for about 5 minutes. I shut the engine off and let it...
  2. HenHouse

    Force 120hp Major Overheat

    Alright, I’ve searched online for Franz Marine Service and the website is no longer up and they won’t answer the phone. There’s no donor units in my area under 1K. So what I’ve elected to do is patch the hole and get a new impeller. You can see the attached photos. I’ll test it on the lake...
  3. HenHouse

    Force 120hp Major Overheat

    The base doesn't seem to be available anywhere. It's no longer produced, and I can't find any old or used stock online. I think the only way to find one is a parts motor nearby. The p/o is 818074A1; any help locating one is appreciated. While I search for one, I'm going to replace the impeller...
  4. HenHouse

    Force 120hp Major Overheat

    Ok looks like I need a new water pump and base. Dose anyone have a clue on the correct one to get for this LU. We surmised that the engine is from 92 and I assume the lower unit is original. So get the 1992 pump and base?? I’ll attach better pictures of the LU for reference. What do yall think...
  5. HenHouse

    Force 120hp Major Overheat

    Thank you for the help so far. I tested it this evening on the hose and it ran perfectly, which rules out a blockage. You can see that in the video There appears to be oil/exhaust oil in the impeller and water tube. Also, the impeller is missing a fin. This leads me to think I have an exhaust...
  6. HenHouse

    Force 120hp Major Overheat

    I took it to the lake this evening to test, and it still overheated. The alarm sounded, and the temp never dropped on my infrared thermometer. I am completely baffled as to what the problem could be. I've been through the entire cooling system. I attached a video that shows the exhaust relief...
  7. HenHouse

    Force 120hp Major Overheat

    I pre-mounted it and used some grease around the top of the water line to indicate if it was sealing in the proper place. The grease made a perfect circle around the inlet hole. Also, with the new seal installed, it seemed to hold the plate off a little bit, so maybe the old one was just worn...
  8. HenHouse

    Force 120hp Major Overheat

    Update Finally got around and took the power head off this morning. Have the manual, gasket, and seals. After pulling the head and being able to inspect the top of the water line, the seal seems to be in perfect condition. I’ll attach pictures. I also removed the spacer and there’s no...
  9. HenHouse

    Force 120hp Major Overheat

    First off, thanks for the responses and help so far. Not sure what happened to the original ID tag. It looks like it fell off, but I'm unsure. The guy I purchased it from didn't seem to know a lot about boats; granted, neither did I three weeks ago. I am mechanically inclined, but don't have...
  10. HenHouse

    Force 120hp Major Overheat

    I found a stamp with a number above the bottom carb and below the starter solenoid, it reads 90. Attached is a photo of the starter and the stamp I mentioned. I would like to purchase a shop manual to help me, but I'm unsure which to get. The seller told me the engine was a 1992. I don't think...
  11. HenHouse

    Force 120hp Major Overheat

    I looked for a foundry stamp under the packs and coils and could not find one. Did spot one under the bottom carb with the numbers 900-817609C and BMP - AE, with the AE being in the middle of the stamp. I also found a number under the flywheel to the right of the packs 800-818154-C1 and another...
  12. HenHouse

    Force 120hp Major Overheat

    Attached is a video to demonstrate the leakage found at the top of the water tube when I attach a hose. Not sure if this is normal or not. Hope this helps with what I'm trying to describe.
  13. HenHouse

    Force 120hp Major Overheat

    Not sure on the exact year and model because the ID placard on the transom bracket is missing. From my own research, I think it's a 1993 or 92. It has power trim not sure if that changes anything. I'll attach pics Before changing the gaskets, I ran it with a hose hooked up to the water pipe...
  14. HenHouse

    Force 120hp Major Overheat

    Hello all, 3 weeks ago I bought my first boat with a Force 120hp outboard. I got a smoking deal and purchased it knowing it was overheating. I've done the following to solve it to no avail, and made a dumb mistake. This forum has been invaluable so far, and I appreciate all the help I can get...
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