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  1. ToonTy

    1985 Force 85hp (856F5A) spark plug questions

    I am looking to get the best performance out of my old Force 3 cylinder motor. I currently have Champion UL18V plugs in it and they seem to run fairly well. When I bought it the motor had NGK BUHW plugs in it. Yesterday I took it out and put the BUHW plugs back in it, but I could only get to...
  2. ToonTy

    Propeller questions on 85 Force 85hp

    Hello All! I swapped out a 40 hp Mercury/Force motor on my 24' pontoon for an 85 hp US Marine/Force this spring and I finally have it running well. That said the motor came with a 21 pitch and a 19 pitch propeller. Originally it had the 21 pitch on it (admittedly I thought it was a 17 pitch...
  3. ToonTy

    Electrical issue with 85 Force 85hp Prestolite Ignition

    Hello Everyone, I have an electrical issue that I am not 100% is one of my power packs. When I start the motor I have to keep it in fast idle to keep it from stalling. It will start and be revving at about 2000 rpms and then it bogs down to around 1000-1100 rpms. When doing this I put an...
  4. ToonTy

    85 Force 85hp starts, but will not stay running

    Hello Everyone, I have an 85 Force 85hp that I pulled off an old boat and put on my pontoon. The compression was checked at purchase this spring and it was good. I had it out and it started really hard and seemed to lose power at times after running it 3/4 throttle. I replaced all fuel lines...
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