OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Trimmers and Brushcutters Ryobi Trimmers & Brushcutters Ryobi 31 cc trimmer

I own a Ryobi trimmer 7+ years. Normally two pulls on full choke, start and run on 1/2 choke with full throttle for about one minute, then no choke and it would trim and edge all I want (I have several attachments).
Last season it would only run on 1/2 choke position (or a little between 1/2 and no detent position). Now it will only run between the full and 1/2 position, and not enough power to really do any good. When I go to 1/2 choke it speeds up and dies. Won't run at all on no choke. I have cleaned spark plug, and looked at the zama carb ( I have not fiddled with any of the adjustments just looked inside from breather end and took off the side plate) and it looks clean.
Does anyone have any suggestions?

Try opening both the low speed screw & High speed screw by 1/4 turn (anti clockwise). Then open the low screw until it will run on idle without choke. After you have don that and it does not hesitate on the way to full throttle you then adjust the high speed screw until it runs at top speed then back off 1/8 turn.

Regards,
Bruce

Well, between replacing the screen on the side of carby ( accually I bought a kit and repaced all the parts) and adjusting the screws, seems to have done the trick!!!
Thanks!!!!

Hi, where did you by the kit ?
Thanks.

Hi Bruce,

The low speed screw & High speed screw are the Red and White funny looking screw? and where's exactly the place of the filter. (picture will help, website)

Regards,
Jack.

coj,
They are plastic covers on the screws, just take them off and make the adjustments to the jets and then put them back on.

Regards,

Bruce

I bought the kit from a local Oklahoma City lawn equipment, parts retailer.