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    3V2(MFS9.8A3) Will NOT Stay in Neutral

    MFS 9.8A3 Will NOT stay in neutral, will go into forward on its own. Backstory - I had the lower unit apart, to replace a leaking prop shaft seal and the impeller. While it was apart, replaced upper water pipe seal, gaskets/seals/o-rings under water pump, o-ring inside prop shaft housing, I...
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    Stalling out

    I have a 2004 f50tlrc, ser# 62y1006609. I do not have a tach. It seems that about midrange, on takeoff, it wants to stall out. If I back out of the throttle, get back in it, it will usually do better. It does not seem to matter how hard you push the throttle. does it regardless. it is cold...
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    oil change on f50

    Changing the oil on a 2004 f50tlrc ser# 62y1006609. When i took the drain plug out, their was no gasket. Their was a thick metal washer. Was that the gasket? Thanks
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    How to read serial #'s

    Getting an '04 yam 50hp 4 stroke. This is what was found for Ser#'s. Three different areas on the plate. 62YF50TLRC L1006609 T Also what spark plugs are recommended? New to the 4 stroke scene. Planning on changing oil, plugs, lower unit fluid, and anything else recommended when i get it. Thanks
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    '04 50 hp

    Going tomorrow to look at a boat with a '04 50hp yamaha w/pt. What do i need to look for on this? I have a compression gauge, what range do i want to see/ what is acceptable? Any help/input appreciated. If i like the boat, we are taking it to a lake to run it. If all works out, will be my first...
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    Water in lower unit

    Pulled the drain plugs today to change the fluid in the lower unit. Came out very milky. Last summer i did have some discoloration, I put new seals for the drain plugs in, also changed the water pump. I changed the fluid after a couple trips after changing the impeller, just to make sure i put...
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    "Hop up" a 25hp?

    Is it recommended to hop up an engine? What all is involved ? Would like a little more out of the engine. It is a '95 merc 25hp, ser# og157655. Any input, good or bad, is appreciated. I'm no mechanic, have rebuilt the carb, replaced the stator& rectifier and a few other parts. Thank You.
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    '84 merc 40hp, kicks up when in reverse

    My dad just bought a '84 merc 40 hp, when you put in reverse it kicks up. Is there a locking pin of some sort that could be broke? I'm waiting on him to get me the serial #. He ordered a repair manual, any extra help is welcome. On 7.10 I posted a thread for a 25hp merc, Thank you to racerone...
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    25hp not "peeing" constantly

    Was getting outfished by my 8 year old yesterday, which I LOVED. Let her drive for a while (sitting bedside her) I looked back at the engine and noticed it would peee for a while, then taper off, start again. repeated this cycle. Gave it a little more gas to see if would change. The on again...
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    thank you to Galamb

    :)I wrote in a while back about "no fire". You where correct. I replaced the rectifier and stator, after testing. Also a new starting battery as the other was tested and found to be bad. As for popping the 20 amp fuse, i pulled the control box apart, no problems there. Can i attribute the fuse...
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    no fire

    Had boat out last week. was running fine then spit and sputtered, like it was out of fuel. Still had half a tank though. wouldn't refire. inline fuel filter had some small black items in it. Replaced all fuel lines, and bulb, took carb off and cleaned, still no fire. pulled plugs and had wife...
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