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    Torque Specs. for 91 50HP Force Head bolts

    Hi, its been a season or two since I last visited. Just a few thanks for some past help. You guys on this forum are great. Hope all is well. Decided to do a head gasket on my 91 50hp and found for one I have no thermostat in her and 2 dont know what exactly the torque specs for the head...
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    why no seal between water pipe and water pump?

    Just replacing the waterpump on my 91' force 50 and have been worried by the fact that there is no positive seal b'tween the pipe and plastic bit on the pump. Me being crafty, machined an o-ring groove in the "plastic bit" . But now am worried that maybe I might blow a gasket somewhere because...
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    Propshaft..how much end play?50hp

    I've got my 91' gearbox apart and there seems to be about .030" endplay in the propshaft is this normal? This means the front bearing will come apart this much... in reverse gear? The input bearing race seems to be spinning a bit in its bore. This race is to float? Any reassurance this is...
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    can't seem to get gear case off of lower end

    Hi guys, dustin cobb webs off the old 1991 50hp force and need to resolve water in the gear case problem from last season.., I loosened the two nuts (one near water pump, and the one near the gear) and can only get the lower case to split at the rear and not at the front! what am i missing? I...
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    Is a 93' 120 hp cdi the same as a 91' 50 hp?

    I may need one and aint gonna spend $300+ found one for less, for a 1993120hp need it for my 50hp 1991.
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    Super poor running force 50

    91 force 50hp. Steady decreasing performance! She won't idle anymore, new plugs, tried different oil, de-carbed, water pump good, float level good, idle mix screw good, fuel/oil good, f. pump ok, whats next? She idled great and ran ~smooth for the first 5 trips, since I bought it. Now...
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    Float level for 91' 50HP

    Does anyone know the propper float level for my carb. It's on a 91 force 50 ser# 507E91 and where is this measure taken
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    Idle mixture screw on a 91 50HP force

    I know tuning an engine can vary widely but I will ask this: Is 3/4 turn out too lean? Why I ask is that I am loading up and fouling plugs like mad. Will I ever get a tan colored plug?.. "Key" possible cause: trolling near idle... Any comments are appreciated
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    Spark plugs for 91 50hp Force?

    Hi all! Would appreciate some info on the plugs I need for my O.B. The manual says...Champion UL18V usa or QA76V canada.... I've looked alround and cant find an exact match/replacement. The conversion to NGK is BUHX and of course the closest match I can find is a BUHW. When I cross ref. back...
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    Alu. Erosion around hood gasket?

    I am doing a good once over my new ride. I noticed under the gasket, round the glass hood and the "tub", is rotten due to life in the salt chuck. I skuffed the chunks of "cheese" off the housing. How do I "RE" protect the ALUMINIUM? And should I put something between the gasket and housing...
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    Knock on deceleration, Force 50

    Ive got a 91 force 50 (ser?) When I rev the throttle (burp it) She has a pretty severe knock on deceleration... what causes this?
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    Has anyone tried to repair a tachometer?

    I have a tach. out of my Double Eagle with a 91 force 50 and US Marine control. The tach has no name . I opened it up and found a smoked resistor. Hard to say if anything else is burned. Other than replacing the resitor how can I check if it is repairable? I have moderate electronic skills and...
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    Where to find wiring diagram for U.S. Marine consol?

    Hi folks! I am trying to verify if all of the wiring in my newly aquired boat is correct. Just fixing some non operational electrics (winsheild wiper,lights, etc.) I know that the tach. isn't working and would like to troubleshoot it and suspect that the overtemp alarm is non functional as well...
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    want to know if this is a good buy?

    want to know if this is a good buy? Hi All I would apreciate some input on this... I am interested in buying my first fg boat. It is a double eagle 16' 1979 w/ 50hp force 1989 on an easyloader trailer.
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