Reply To: 7.5 Mercury carb issues

[David Stanton]

Thanks for the tips!

Dave B. – I have not disassembled the fuel pump yet, but will check it now.  I assumed since the carb was getting gas and I couldn’t force it to leak with the primer bulb, that the problem was not over-pressure from the fuel pump.  I think I’ll just order the fuel pump kit.  I’ve had the carb apart 3 times and just want to get the thing out of here and back to my neighbor.

Bill W. – I notice that Marine Engine sells what they call the “needle and spring” and the photo shows the spring, and yes – I have seen this spring in several others and only this and my parts motor don’t have it.  I think I’ll just order the OEM one, because I only want to take it apart one more time.  Thx for the measurement info.  I have the factory Mercury shop manuals for 1966-1974, and 1975-1978, and they both have that same measurement photo which I have set the float to, and they both have the same adjustment dimensions and call the part an “Inlet Needle and Spring”, even though their exploded views show no spring.

Dave