20 Most Recent Ryobi 40-Volt Lithium-Ion Cordless String Trimmer Questions & Answers

If charger is good then the battery is in need of replacement.

Battery is weak. Those lights are really useless...more a marketing gimmick. It almost sounds like it developed a memory...this happens when certain types of batteries are not fully discharged before being placed on the charger. Replace the battery and make sure to follow charging directions for that particular type of battery

https://www.ryobitools.com/power-tools/support/contact manuals.ryobitools.com

You usually have to press a release on the spindle.

Question edited for clarity and toss in some CAPS. None Larry! It is a 2 stroke machine so the crankcase is lubricated by the oil that is mixed with the gas. I double checked to see if it had a gearbox. It is just an engine and a fan https://www.google.com/search?q=ryobi+ry09056+crankcase+oil Manual which includes maintenance https://www.manualslib.com/manual/1090412/Ryobi-Ry09056.html#manual ..

Sounds to me like there is either a connection fault Or a Safety Cut out Switch that keeps.... well..... Cutting out or In as the case would Be. A Google search on the Make & Model number on your Ryobi Ry40500 electric Chainsaw Could bring up some answers. My Guess is the Safety Guard Cut out safety Switch is faulty.

Phong Tran. It is better to write your own question rather than tagging on to an unanswered question from 7 years ago. Some help in the link for stripping down and repairing electrical issues. https://www.google.com/search?q=ryobi+40v+trimmer+bad+connection+problem ..

Take the machine apart and first check the status of the switch if it's attached. Follow the power chord to the bottom of the trimmer and ensure that they are attached as the detach due to strain

no there is not one here is a link to manual copy and paste https://www.manualslib.com/manual/682035/Ryobi-Ts1552la.html?page=8#manual

They are all the same irrespective of make. ..