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    Marvel mystery oil

    has anyone ever run marvel mystery oil in there fuel system on premix engines I have force 120's (1990) and they run great now but I like preventive maintence also I have a 1999 40 hp merc. on my creak boat that has oil injection. basically Im just asking if it it safe for me to use Thanks
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    120 force steering problem

    hello all, I have a 1990 force engine (120hp) i disconnected the steering cable and the motor is hard to turn by hand, i put the grease gun on the nipple (opps can i write that)any way i pump it with the gun and it gets really hard then it pops the nipple out, there seems to be to much...
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    trim tilt

    i have a 1990 force outbd i need to take apart the tilt cylinder due to leaking does any one know how to do this, I have Clymer outbd manual but it does not say how to take apart to replace o rings any help would be great also does any one know if i can take off cylinder with out removing engine...
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    trim tabs

    I HAVE A 1990 TROPHY AND ONE OF MY STOCK TRIM TABS IS LEAKING FLUID OUT OF THE BOTTOM OF ACTUATOR, CAN I TAKE THIS APART TO FIX, ARE THERE O RINGS, OR DO I HAVE TO REPLACE AND WHERE CAN I GET LOCAL MARINE SHOP SAYS I CAN NOT GET THESE AND I NEED TO BUY UPDATED TRIM TABS ANY HELP WOULD BE GREAT :)
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    Force 120 bucking

    Past few days I posted a few questions about my 120 force. Ive replaced the hub in the propeller, I also had some one out to check for rott in transom. My problem is that the engine pops up in the engine bracket when i get over 2000 rpm, Under 2000 rpm it sounds and runs fine. Now I have to tell...
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    120 force doing strange things

    We posted a message yesterday got some sugges. 12footer recomended a few things,I checked motor mounts they are all really tight. I replaced spark plugs after spraying engine tune thru carbs, also replaced hub in prop. My problem is when i have boat in water it runs great untill i hit 2000rpm...
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