Ask the Editors: Idling a Breeze
The very first place to start with the automatic Yamaha Breeze is to adjust the throttle stop screw. Turn the screw in to increase engine speed, and out to decrease engine speed. If you have access to a diagnostic tach, proper engine idle speed should be between 1,650 – 1,750 rpm.
If this adjustment doesn’t solve the problem, the next place to look would be the carburetor. While the carburetor is often an intimidating device, the fact of the matter is any carb is a fairly simple mechanical device that can be fine tuned with ease with a basic understanding of what does what.
Start by giving it a good cleaning. There are a variety of vids and tutorials around the web on how to do this (like this one on Youtube) but even simply popping open the carb and blasting the interior out with a spray carb and choke cleaner is a good place to start.
Ordinarily idling issues can be fine tuned by simply adjusting the idle mixture screw on the carb. If memory serves, there should be 2 screws on your Breeze’s carb, one for idle mixture adjustment, the other to adjust air mixture. Small adjustments on these screws should make a big difference you’ll notice immediately. We usually turn the idle screw up until the machine is idling high then back it out until the engine starts to miss/ bog down. Once you’ve established those extremes, find the middle and make very small turns until it runs smooth.
