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    Could to much 2 stroke oil making engine die?

    Have an 89 Bayliner Arriva with a 1990 120hp Force motor. Motor starts real easy. The 30gall built in gas tank seemed to have to much oil in the gas, I think the previous owner put to much oil in the tank, probably thought you just poured it in if you know what I mean.. The gas was probably old...
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    Overheat warning horn wire hookup?

    Can you tell me what 2 colored wires hookup to the under dash warning horn? I have the 4 wire loom coming off of the US marine control on my 1990 Force 120hp that goes up to the dash. The wire bar loom extention has the 4 wires on it, purple, orange, red, and the black. Looked like the existing...
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    1970 Mercury 135hp rotor change out??

    The motor is a 1970 Merc 1350, #2842313. Is it very dificult to change out the rotor? the type that is mounted on a shaft? The motor I aquired had a shattered rotor, almost looked like someone thought it would just come off. The rotor was part# 393-3738 and I picked up a used distributer that...
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    Force 120hp tilt n trim question?

    I have a complete tilt unit that came with my boat, owner was going to have it switched out due to the other unit having a leak down problem. that never happened. I am putting power to this unit and no movement at all up or down, I thought it might have had air in it so I took out the front and...
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    Setting Timing question on 1990 Force 120hp???

    When the motor is idling in a test tank in neutral which mark should the stationary timing mark be hitting on the flywheel or where should it be landing (if in/between marks is the correct area). On the flywheel it has the TDC mark and to the left the other 3 grouped marks. Trying to get it...
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    Checking timing on 1990 120hp force??

    How do you tell if your timing is right on? I adjusted the upper screw right under the flywheel thinking it was an idle adjustment and then saw the low adj screw. Not sure if I screwed the upper screw back in as it was set before. Will this effect the timing? thanks for any help.
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    1990 Force 120hp tilt/trim questions?

    Looks to be a Prestolite pump. What would cause it to have that "bounce" effect when you are lowering it? Also I wanted to remove the lower valve system to remove it to have it rebuilt, (the system slowly bleeds down so I think it need a rebuild) It has 3 lines going into the side of it and the...
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    How much hyd fluid does it hold? Force tilt unit

    Does anyone know off hand how much hyd fluid ounces this trim reservor holds? 1990 force 120hp, 1201X90B. Its the prestolite system. i know how to fill it, just looking for the ounces it holds. I believe the part # is 820545. thanks for any info.
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    120hp ForceTilt n Trim leaking down??

    I know this is probably a common problem at times and has probably been asked a million times but on my 1990 120hp Force the tilt n trim will act great as far as power up/down but when it is in the up position very slowly it will come down on its own. Nothing is leaking on the ground and the...
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    Installing Boat drain Plug Question ?????

    My drain plug was leaking so I was trying to remove the 3 drain plug screws on my 89 bayliner and did the fun thing of breaking the screws off when I torqued them to hard to remove. I drilled them out and have to install a new one, one of the brass looking ones with the 3 screws, I'm sure you...
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    Keeping your boat interior nice, what do you use?

    Just wanted some opinions on what you think is the best stuff to use to keep your interior of your boat in good shape. I'm talking about the vinyl seats & side rails. I picked up an 89 bayliner with next to mint original interior and want to keep it looking that way. Some say leather care...
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    What spark plugs to use?? 1990 120hp Force

    The book shown UL-18V US and QL-76V Canadian. I have a 4 cyl. 1990 120hp force motor, 1201X90B. I have searched these numbers and find nothing. Are they called by another number now? thanks for any help.
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    Fuel/Water Separator Question?

    Bought this Attwood fuel/water separator, might be a silly question but does it also filter the gas just as a regular fuel filter would? thanks for any info.
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    Skeg is Bent, try to straighten?

    the skeg on my 90 120hp force is bent, you know it looks a little like Orka the killer whale's fin. I would say the tip is bent about 3/4" out from being perfectly straight. Should I try to straighten it? is this that much of an issue? thanks for any advise.
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    Electric choke not working? 1990 120hp Force

    Green wire is routed and hooked up correctly but when I push the key plunger no choke, do you have to jump another wire to the choke? it just has the yellow wire attached that look like it runs to the neutral safety switch area and under the battery hookup bolts. Starter engages fine when the...
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    1990 Force 120hp control cable end to short??

    I was hooking up the control cables and the distance between the slot in the cable end to where it clips to the motor is about 3/4 of an inch to short even turned out almost all of the way, the other cable is fine. In the swivel clamp with the 1 screw I have it tightened up on the rear of the...
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    Hooking up 120hp Force electrical diagram??

    hello, just wondering if anyone might have a wiring diagram for this motor? 1990 Force 120hp 1201X90B. Going to try and hook up the wiring harness to the motor, the boat had an OMC motor on it so now I just have the motor mounted and the US marine controller. I have the main harness and then the...
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    1990 120hp Force Parts book, manual? ??'s

    Does anyone know where I can get a parts book for a long shaft 1990 120hp Force motor? the model is 1201X90B. I am also looking for a book that would show the US Marine controller wireing hookup to the motor. I will probably end up getting a clymer book if all else fails. It would be nice to...
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    What is the weight of 1990 Force 120hp 1201X90B?

    Can you tell me the weight of this motor? 1990 Force 120hp long shaft 1201X90B. thank you
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    Force Trim n Tilt Pump not activating

    On this Force 1990 120hp 1201X90B the pump seemed to work fine both ways when I tested at the relay, I had to replace a broken steel hydrolic hose. I pulled the top off to make sure all was clean and everything did look real clean. After I put it together it acts like it is not getting power...
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