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    1989 merc black max xr4 prop questions

    I have a 1989 cheetah limited surface tunnel hull with a mercury 150 black max xr4, the boat gets out of the hole fine, but dont want to go much more than 5k rpm and only around 45-50 mph if that. Current prop is a 3 blade 14 1/4 x 22. trying to figure out if i have a prop problem or a...
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    1989 mercury 150 black max xr4 oil issue

    good evening i have a 1989 20' cheetah limited surface tunnel boat with a 150 merc black max xr4, compression is 140 across the board, we had just got this boat about 2 weeks ago, boat runs great on the hose but previously under load it would collapse the primer bulb, since fixed. Boat has had...
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    Insuficient charging

    Good morning everyone here is my issue..... I have a 1986 Champion bass boat with a 175hp black max and the problem i am having is that the system does not seem to be putting adequate power back into the battery. I have noticed that when fishing at night when you run the nav lights the voltage...
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    1986 175 blackmax problems need help

    i have a 1986 champion bass boat with a 175 blackmax outboard on it and the problem i am having is this..... took the boat out 2weeks ago and the boat ran great then last week took the boat back out and as soon as it fire off in the water i could tell something was wrong.....the engine was...
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    temp alarm issues

    ok guys here is my problem i have 1986 175hp merc blackmax and the temp alarm sounds off....the solid beep. have had this problem for awhile now and did research after i had virtually replaced entire cooling system did the water pump, impellar, and thermastats, and just did the poppet valve...
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