i took my baffel out and now the 66 wont idle so i need to rejet but was sizes to rejet i have no i dea because i have never done this before

 

i would turn out your idle fuel screw first before rejetting. on most yamahas it is a flathead screw on the bottom of the carb on the engine side. start by backing it out another 1/4 to 1/2 turn and see if it helps.

 

thanks for the help

 

The pilot screw is only for air/fuel mix at idle and just off idle (the one at the bottom of your carb).

I hope you are not trail riding without the baffle. Not to give you a lecture but this is part of the reason government is coming with so many rules and regulations and we are loosing so many trails. Just hope you are not part of that problem.

To rejet you will need how to do a correct WOT (Wide Open Throttle) test and also how to read your spark plug and how to do a chop on your spark plug. If you don't then it is just trial and error and possibly damage to your engine if you are approaching a melt down.

What little gain you may get with the baffle removed certainly in my opinion doesn't warrant the risk of ruining your engine.

If you are stricly using it on the track and for race purposes I could possibly help you. If you are using it on the trails then I don't feel I want to help you be part of a problem - not being a jerk, I just don't want any more legislation or loose any more riding areas from irresponsible riders or ones braking laws.

I might add, that if you are trail riding then it is not a matter of playing cat and mouse with the law but there are many other riders that will turn you in to protect there sport, I happen to be one of those people.

If you like to trail ride then you also need to think about what you are doing so that you can assure yourself a place to ride in the future.