1977 yamaha champ

Joseph Hopkins /

Hey thanks for the add. Just picked up a 1977 yamaha champ. It runs pretty well but seems to bog down if you give it any more than 1/4 throttle in 3rd gear. Any suggestions would be great. Thanks.

Re: 1977 yamaha champ

Thoroughly clean the carb .

It has to be pristine , inside .

All passages need to be clear .

All jets nothing but brass . ;)(edited)

Re: 1977 yamaha champ

Joseph Hopkins /

Will do...gonna replace the plug too

Re: 1977 yamaha champ

> Joseph Hopkins Wrote:

> -------------------------------------------------------

> Will do...gonna replace the plug too

Good idea . Don't forget to check for proper gap . ;)

Re: 1977 yamaha champ

Joseph Hopkins /

Just was gonna start tearing the carb off when I realized that the exhaust is loose where it connects to the port on the engine...causing a huge exhaust leak....would that have anything to do with it?

Re: 1977 yamaha champ

Maybe , but , it sounds more carb related .

Tighten the exhaust and give it a run .

You'll find out soon enough .

Re: 1977 yamaha champ

3rd gear...in a moped? Pic of bike?

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