1955 Evinrude Fleetwin 7.5 Hp Low Speed Knobs

[jelsman]

It seems that my motor will not start unless low speed valve is shut off. After starting, opening low speed valve even a little bit causes engine to stall out. Any ideas? Thanks!

 

[Vic.S]

Re: 1955 Evinrude Fleetwin 7.5 Hp Low Speed Knobs

The knob probably pulls off. Then you can adjust the setting for best running and put the knob back in its mid position,

See http://forums.iboats.com/showthread.php?t=167352

 

[blakeman]

Re: 1955 Evinrude Fleetwin 7.5 Hp Low Speed Knobs

book dont say and knob is not broke

 

[Sea18Horse]

Re: 1955 Evinrude Fleetwin 7.5 Hp Low Speed Knobs

Your carburator may have a gasket on the main nozzle inside the float bowl. That gasket may have deteriorated and come apart. In any case I'd suggest pulling the carb off and having a look in there. Get a carb kit and a float and overhaul it. Being sure to clean everything out thoroughly (meaning remove the "freeze" plugs) and blow all the passages out with compressed air. Good luck

Cheers..................Todd

 

[tmcalavy]

Re: 1955 Evinrude Fleetwin 7.5 Hp Low Speed Knobs

Have a 57 Big Twin 35 hp that had a similar problem, but it was the high speed needle. Only way I could start it was to pump carb bowl full of gas and shut off the high speed needle completely...opening it even a tiny bit flooded and killed the motor. Went through that carb several times, checked and rechecked the float, recleaned it, checked the tips/end of both needles...thinking the high speed was grooved/ruined. Finally gave up and bought a used, rebuilt carb...runs like a top...carb bodies/castings wear out too apparently. Hope this help you figure out/solve your problem.