[dirtdad]

so this quad has not been run in about 3 years, took the car apart and cleaned everything with carb cleaner spray, it now starts fine, and idles ok if I keep the choke on, but as soon as I take the choke off, I need to keep it running with the throttle, if I ride it for a while, it seems to do better. I would like to know the carburetion adjustment procedure, such as initial settings, what should the mixture screw be set at, ans so forth. Thanks.

 

[Helmut]

Sounds like there's still some debris in the carb to me, in the idle circuit since you have to keep the choke on, but here are the adjustment procedures.

 

[dirtdad]

what should the throttle stop control knob be set at? are these the only 2 adjustments possible? thanks for your help

 

[Helmut]

what should the throttle stop control knob be set at? are these the only 2 adjustments possible? thanks for your help

There isn't a certain amount of turns specified for the throttle. It's supposed to be set at 1,400 RPMs with a tachometer, but I always just guess at the idle speed. And yes, those are the only two adjustments, air/fuel ratio (pilot screw) and idle speed (throttle stop screw/knob).

 

[TRX2fiveO]

Idle is 1400RPM I think? But if you are only able to idle with the choke on the Air feul screw orfice is stopped up you need to remove that screw, spring, o-ring and tiny washer. clean the needle on the end of the screw and take a small wire like from a wire brush and clean the orfice. also remove the slow jet and hold it up in the light I gaurantee the little hole in the center is clogged or some of the little holes along the sides are.