the trimmer line was allowed to wear too short; the string is tangled inside the spool (this is a very common problem); or the engine speed is too slow and must be increased by throttling the engine ...
Ryobi is one of the best brands for yard work and lawn projects, as it offers a lot of outdoor tools that can do the job. If you're using a Ryobi cordless battery string trimmer ($99 at Home Depot ...
During normal use of a Ryobi string trimmer or brush cutter ... but if you can't find the spark arrester, your owner's manual will have instructions for where it is located. Spray the spark arrester ...