Help Kristi fix son's quad!

[kristi]

My nine year old just spent his life savings on his first quad-a used 2005 honda trx 90. He is the third owner. I figured asking the big boys my question would be the way to go since you all probably started young too! The problem is, it is revving high. When i turn the choke down to where it has a good sounding idle, several minutes later it is idling high again. If I turn it waaaaay down, several minutes later it will die if he stops. Here's the twist: The first owner lived in the mountains in Colorado. We are in a valley. How do I adjust it for our altitude, if that is what needs to happen? What else can I try? I'd appreciate every suggestion available...no advice would be too elementary either. Thanks!

[yfzgirl]

I really admire him for being so young & responsible enough to buy his own quad, good for him :) I like that! First off you have to find out what type of altitude your in to set the jetting right and also check the idle on the quad.There should be a little screw on the engine that's loose and moves easily that's idle screw, I'm sure know that but just in case a little info helps.Get back to me and let me know what happens.

[kristi]

(Sorry for the delay...) Thank you for your response. My son was elated to read your comments. :-)
We found the idle screw and tweaked it. It seemed to have done the trick! Thank you so very much!! You really saved the day and the quad!
Thanks again!

[yfzgirl]

Your very welcome! I just want to let him know to be safe when riding and to always wear a helmet & protective gear.Keep riding and keep the sport alive always fun while your riding.I'm glad everything worked out for you guys ;) .