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    25hp mercury losses power after running 30 minutes

    i have a 25 mercury 92 model that will run fine at first , but after about 20 to 30 minutes the motor will bog down still idols fine but it seems to load up it starts out getting slower and slower till all you have is a idol.
  2. H

    1992 25 hp mercury runs great for ten minutes

    hello there i am hoping this motor is not hurt internally but that my next step unless someone has an ideal is to tear it down. the motor starts and runs fine for mabe 10 minutes then it starts to bogg down goes from full throttle down to mabe half throttle then only mabe quater throttle is all...
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    25 mercurey need some help

    i have a 92 model 25 mercurey and cant seem to figure out why it cuts out above 1/4 thottle .at the house running it with the water muffs on it back fires throught the prop above 1/4 throttle mabe every 15 seconds and in the water running it it seems to just load up or bog down either way i have...
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