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  1. D

    volts up and down 150 V6 Blackmax

    I have a 1988 MERCURY V6 150 Blackmax on a 18ft mustang boat will do 100kms.. Question.......when my boat is running at idile it sits on 12.5volt when i raise the RPM it can get as high as 17volts. If i turn the stereo on it will lower the volts back down to 12 to 13 the louder the stereo the...
  2. D

    88 blackmax 115 gear problems

    Hi guys I have pulled my boat out of storage after 12 mths. I replaced the impella as I do every year put LU back on and found I only have forward? Pulled the LU off again and with vies grips turned the shift shaft CCW and find neutral turn CW and only have forward till I get neutral agian...
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