motor starts easy, no problem there, but when i give it full throttle, the motor bogs down when cutting and does not sound like it is operating at full throttle. Any ideas? Fuel is new and fresh and mixed properly.

Craig Hiter, June 2011

I had the exact problem. Here's how I fixed it.

There are two little nubs next to each other behind the "start/run" selector (aka choke) area on the carburetor. They are jets for your carb that control fuel/air mixture. If the world was a sensible place they would have slots for a screw driver - but it isn't - so they don't. You can still adjust them though.

The jet further away, or to the right as you're looking at it; is the one you need to adjust. It adjusts the running speed air/fuel mixture. The one on the left is to adjust the idle. Adjust the running speed jet first because after doing so you may not need to mess with the other one - it may idle fine or idle better.

Some people use a dremel to make a notch for a flat head screw driver, other people track down and order the elusive tool that supposedly lest you adjust it (called a pacman tool? Weird.) Anyway, I didn't get all technical with it, I marked the little nub with a pencil line so I could see the position, and then was able to use a little pair of needle nose pliers I had laying around to grab the thing and give it a half turn counter clockwise. Counter clockwise makes it richer (more fuel in the mix), clock wise does the opposite ("leans" it out.)

So half a turn ccw on that, fired it up, ran just fine. Was able to chop up a bunch of fallen trees and branches from the snowstorm we just had in Eugene. Idles fine too where before it would stall out if I didn't have the choke on.

Try this before you toss it, rebuild the carb, or go through some other extensive procedures. It's super easy and worked great with mine.

Thanks to the other people out there on the internet who's tips with similar problems with similar trimmers/pole saws/etc. showed me the way! Hope my comment might save someone else the hassle I was able to avoid.

Have a nice day and good luck!

Here's a couple photos of what I'm talking about.

http://imageshack.us/photo/my-images/163/ryobibc30carburatoradju.jpg/

http://imageshack.us/photo/my-images/822/ryobibc30adjustment.jpg/

http://imageshack.us/photo/my-images/36/ryobibc30withchainsawat.jpg/

ssk, March 2012