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  1. J

    rx4 150

    i have a rx4 150 blackmax motor runs and ideals good untill i go to plane it out. it spits and sputters and then dies. if i take the cowling off the motor and run it the problem goes away. dont understand what is going on anyone know why?
  2. J

    wtb flywheel

    i am looking for a flywheel for a 1989 mercury rx4 150. thanks
  3. J

    150 blackmax

    i have a 150 blackmax that has troble getting on plane and will not run over 4000 rpm. while trying to find the problem i found that part of one of the magnets on the inside of the flywheel was broke. is this my problem? if so where would i find one at a reasonable price? looked up a new...
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