QuestionI have a Ryobi trimmer model 775r with a Walbro "WT" carburetor. I have air bubbles showing in the fuel line. I have replaced the carb, fuel lines and filter. Is it normal to have air bubbles in the fuel line? If not, what could be the problem and how do I solve it? Thanks.
AnswerYou may have the fuel lines routed incorrectly, the carb has 2 covers
and should have 2 fuel nipples. And 1 primer bulb.
The nipple closest to the cover with one screw, goes to the fuel filter, the other one goes to the primmer. The primer actually
pulls the fuel through the carb, and sends the excess fuel back to the tank, so it needs to be hooked up that way, as the primer only goes one way.
Double check and let me know what you find....
