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  1. M

    91 Merc 40hp 4cy 2 carb....tweaking carbs.

    I have totally cleaned the carbs which did make a differnce in the running, but I am still not getting the top speed like it use to. I would be running 25 and out of the blue it would kick in run the norm of 32mph. I did try pumping the bulb during the 25 speed and did not help. My questions...
  2. M

    '91 40hp Merc Classic...No hole shot or plain out

    I tackled rebuilding the carbs on the motor. I have worked on car motors quite often so I took the challenge. The problem is that is it got where it would not run out of the hole nor as fast as it should basically not taking full throttle. I got a gasket set and need valve for the rebuild...
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