Hi all. Thanks in advance for taking the time to read this. I have a 1975 merc 500 50hp that I've finally got running. I cleaned the carbs and put new gaskets on them. The motor idles great but as soon as I add over half throttle the motor begins to run rough and hesitate badly. It acts like it...
Hi all I'm new here. I just got a hold of a 1975 merc 500. I get no spark and I think some parts are missing. I already have the wiring diagram and am working on re-wiring the motor. But, does anyone have an exploded diagram of the the upper unit? I just want to make sure all the parts are...
