Report "I have a ryobi x 430 string trimmer. The timing belt came off as mentioned in other postings and I put it back on according to online tips. It ran well for a while. Now, it is hard to start, but it does. It does not idle unless I am manually holding the throttle or trigger. The throttle appears to open all the way when I use the trigger, but the engine does not run at full speed and the head does not spin enough to cut one blade of anything. I removed the carb and cleaned it with carb cleaner as well. No difference"