Ok guys thanks for your help in advance!!!! 84 model 150 black max with 125 compression each. It runs great straight off trailer then after warming up after 10 or 15 minutes it loses 200 to 300 RPMs. It still runs smooth just not as much *** to it!!! and needless to say drops about 5 mph. Also...
Hey guys just bought a parts boat with good Mercury black max. boat is a 91 model and came with a johnson or evinrude. I know this from all the OMC stuff still in boat. anyway the black max has silver and grey stripe (that I know could of been changed) serial number is 6519825 can anyone help...
ok new to outboards....NOT new to boating just the outboard world got an inline 6 that spins over but no fire to plugs....all the stator and switch box stuff is new to me so i need to know where to start and what should have power via test light....this thing is nothing like a mercruiser 496 mag
