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    86 Johnson 150 stumble

    I had a whole bunch of problems with this 150. Long story short I tore the whole motor down and put all new power head gaskets in. New carb kits and jets. New valves below the carbs (can't remember what there called) New coils, power packs and stator. New voltage regultor and also plugs...
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    GT150 Problems

    Re: GT150 Problems Boat is a 17' 1986 Hydra-Sports. I need to redo the link an sync this week. All jets are new in the carbs. top end is pretty good, not as fast as I'd like but will play with that when I get it dialed in. My main concern is getting the idle / low end timing set. I raised the...
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    1986 Johnson 150 Check Valves / Recirculation valves Diagram

    Need help with a diagram. I put all new gaskets in my power because crank seal was leaking. Now putting new fuel lines in. I replaced all check valves but not sure on the routing of the lines. I attached a pic of how it was but does not match any diagrams i have found. Everything i see has lines...
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    Johnson 150hp crank bearings

    I have a 86 johnson 150 that was leaking between crankcase halfs. I split the case and spun crank to look at pistons and so. When I was done I noticed the there are 2 crank bearings kinda in the center of the case with what looks like sleeves over the bearings and there is what I think would be...
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    GT150 Problems

    Re: GT150 Problems 3 questions - 1st is my settings right for the timing in previous post? 2nd I was told my motor might be sitting to low to get top speed. Bottom of my motor to the bottom of my boat is approx 22". 3rd would a bigger pitched prop do me any good with only 4500 rpm? It's a 15...
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    GT150 Problems

    Re: GT150 Problems we'll I think i got it to idle. The low end timing was so far off. I'm trying to adjust it but it won't adjust according to the manual. I need a link n sync for dummy's. Here is what I did. I made sure the butterflies are all the way closed. and retightend the "C" screws (I...
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    GT150 Problems

    Re: GT150 Problems Still having problems with my boat. I took the coils off and had them tested and they tested good. Replaced the wires because the old ones had alittle rust in them. When I had the boat out tonight I noticed some I think mixed gas seepage by where I think the crankcase...
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    Force Motor identificaion

    Re: Force Motor identificaion
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    Force Motor identificaion

    trying to order parts for my dads 50hp force but where the serial number and model number are the tags is so distoreded can't make out a single number. I did see us marine but thats all I can find. Any other ways to tell?
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    GT150 Problems

    Been reading these forums for a few days and got some mixed feelings on some of my problems. I have a 1986 GT150 on a hydra sport. When I bought the boat of coarse the guy said it ran good. Well finally got it out and couldn't got more than 24 mph out of it and every time you stop you have to...
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