"My Evinrude 6hP twin cyl star
"My Evinrude 6hP twin cyl starts and runs fine at mid to high speeds but the low rpm is quite rough running. I have mixed fresh fuel at 50:1, compression tested( both cyls at 110 pulling over by hand) and replaced the plugs, gapped at 0.040. The plugs are NGK BS6 I think although the manual reccommends Champion plugs with a fancy code. I am not a fan of champion as I have had loads of failures but will give them a try if you think its worth it. i overhauled the carb which was as clean as a whistle. I say overhauled but mean cleaned it out ( no new gaskets ). The only thing is that the mixture screw can be adjusted right in and the engine runs a bit better but does not die. If I disconnect the fuel, the engine runs a lot smoother and the revs pick up as the fuel runs out which seems to me like the carb is at fault. Any suggestions most welcome. Thanks."
"My Evinrude 6hP twin cyl starts and runs fine at mid to high speeds but the low rpm is quite rough running. I have mixed fresh fuel at 50:1, compression tested( both cyls at 110 pulling over by hand) and replaced the plugs, gapped at 0.040. The plugs are NGK BS6 I think although the manual reccommends Champion plugs with a fancy code. I am not a fan of champion as I have had loads of failures but will give them a try if you think its worth it. i overhauled the carb which was as clean as a whistle. I say overhauled but mean cleaned it out ( no new gaskets ). The only thing is that the mixture screw can be adjusted right in and the engine runs a bit better but does not die. If I disconnect the fuel, the engine runs a lot smoother and the revs pick up as the fuel runs out which seems to me like the carb is at fault. Any suggestions most welcome. Thanks."