[moon55]

It's a friends Arctic cat 300 that's the culprit. I can get it started, but when I go press the thumb throttle it acts like it's starving for air and the engine stalls. I've cleaned the carb several times and the diaphram looks to be in good condition. I've flushed old fuel from the tank and I've cleaned the air filter. Like I said earlier, seems to be running rich and starving for air. I can take the air filter out and the RPM's increase like they're suppose to with minimal cutting out when I press the thumb throttle. Just looking for a little help.

Thanks.

 

[TRX2fiveO]

Welcome to the forums. see if this helps?

CV Carb Tuning

This also will apply to nearly every type of carb on these quads