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    1996 200EFI intermittent alarm (Oil issue) ??

    Hello, Working on a 1996 200EFI merc and its giving the intermitent alarm ,looking for suggestions because I have tried about everything I can think of. Here is what we have checked: 1) Oil cap on resivoir,tested and its good 2) Had new spare alarm module so we slapped that on 3)Removed oil...
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    mercruiser 3.0 wont start, Head issues??

    Hello, Got a 3.0 Mercruiser that we are trying to get running and here is what we have done. Checked spark- good checked timing-good checked compression- cylinders seemed dry so we squirted oil in each cylinder and compression is at roughly 100 on each cylinder Did a blowdown test- seemed...
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    Yamaha F115 Alarm sounding

    Just put on a 2002 F115 yammi and it ran great the first time we had it out.The second time this past weekend the audible came on and I lifted the hood and saw oil on the front of the intake plastic,come to find out the oil pressure sensor was loose. I tightened the oil pressure sensor and the...
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    2006 25 merc 4 dtroke cooling issue?

    Hello, I have a 25hp merc four stroke(2006) that I changed out a full waterpump kit on and also checked the thermostat, it still will not shoot water out the tatel tale. Ive done tons of water pumps so i am sure thats on correctly (had it off 3 times) and also removed all screens to make sure...
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    Going from Evinrude to yammy F115 ?'s

    I am going to switch motors out on a boat and it has a late 80's 110HP Evinrude and I want to put on a 2003 F115 Yamaha.Can anyone tell me what all needs to be changed in the process. I am mainly wondering about the wiring and controls/tach. Thanks in advance for the help
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    electrical gurus need your help please

    I am building a project where I need a voltage regulator/rectifier that can handle at least 45 volts AC , need the volt regulator to bring voltage down to 12 volts and the rectifier to charge DC. Any ideas for a volt regulator/rectifier would be great. Thanks in advance
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    Mercury 100 questions, gear ratio?

    1)What is the gear ratio on a 1976 merc 100? 2) Roughly how many foot lbs of torque would this motor have? Thanks
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    50 HP 4 cylinder merc ??

    Motor runs great at Idle but when I get it around 1/2 to 3/4 throttle it pops and carries on and I noticed that the head gasket is leaking when it pops. Why would air pressure be coming popping out of the head gasket since this motor just has a water cover not a removeable head.?? My...
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    1989 Force 85 hp locks up???

    The motor works great at low speeds, when you get into the throttle a little farther it seems like the motor makes a clunking noise alomost like you hit a rock or log with the lower unit and then it comes out of it. I took the lower unit apart and it looks fine, any other suggestions are...
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    21 pitch shooter prop,what does it fit

    Anyone know what a shooter prop might fit, its a 21 pitch. Are they for evinrude or merc?
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    1999 Merc 75 HP stalling

    I have a 1999 merc 75 HP that will start and run for a few seconds then stall out, any suggestions are appreciated.
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    1989 V6 150 Evinrude ignition probs

    I am having some ignition problems with this motor, here is what Ive done, replaced the powerpack with a new OEM pack. Stator has good voltage and passes resistance tests, The timer base is what i am questioning, the resistance on the timer base from the black/white wire to the white wire...
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    1980's merc 50HP 4 cylinder, blowing powerpacks???

    I am working on a merc 50 hp , I believe it is a mid to early 80's 50 HP ,4 cylinder, it keeps blowing the powerpack on the top two cylinders, I was wondering if this could be the voltage regulator/stator/trigger or combination of all three, it has blown three packs so far and Im looking for the...
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    2002 merc 4 stroke 115 powerhead

    where can you buy a 4 stroke powwerhead that is remanufactured or rebuilt? How much money are they, also what is a 115 merc worth with a blown motor(hole in the block).
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    1985 Yamaha 115 ?'s

    The control unit underneath the oil resivoir on the motor, it has a switch on it, I was wonmdering what that is for?? I see its plugged into the level indicator but whatis its function? Thanks in advance for any info. Stew
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    1985 Yamaha V115 oil mess

    I have a 1985 115 Yammi V4 and the oil resivoir on the motor is spilling everywhere like its pressuring up or overfilling and spilling out, Im thinking the level indicator is bad but Im wondering what the contol unit does. If this has happened to you or know the issue any help is appreciated in...
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    Evinrude fuel primer solenoid?'s

    I was wondering when I have the red lever on the fuel solenoid in the running position(lever points toward the VRO pump) and my motor runs fine, if I turn the lever into the opposite position my motor stalls almost instantly, why is this happening? I thought it was just for priming and once the...
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    1998 Mariner 135 optimax , TPS issues

    working on a 98 optimax 135 Mariner and it seems to work great other than once in a while it will completely stall on me. I took it to the dealer and they hooked it up to the computer and it comes up as the TPS sensor. I have had it to 3 seperate dealers and they all say the same thing but it...
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    Evinrude 90 HP ignition problems "not solved"

    I have a 1987 90 HP evinrude that is giving me problems ,here is the diagnosis. The motor is freshly rebuilt and compression is top notch , the motor starts fine but after about 30-45 seconds of running it will cough and sometimes its enough to kill the motor.It seems to me like some sort of...
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