4hp yamaha 2 stroke. boggs down!

[stephens119]

engine runs great at idle and runs good at full throttle but then after 5 minutes it boggs down then stops running. After this happens I have to wait about 5 minutes until it starts. Any help out there would be appreciatted! Thanks.

 

[rodbolt]

Re: 4hp yamaha 2 stroke. boggs down!

sounds like either the on engine tank vent isnt open, the remote valve isnt in the right spot or the fuel pump is dying.
or its overheating and the pistons are sticking to the cyl bores.

 

[stephens119]

Re: 4hp yamaha 2 stroke runs rough

Re: 4hp yamaha 2 stroke runs rough

engine starts right up. runs good at half throttle. full throttle runs rough. any suggestions?