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Question edited to add FULL make model (what it is).
Category moved from Washing Machines to Ryobi Trimmer.
Replace the spark plug. Strip and clean the carburetor. Replace the fuel with fresh. But hang on though, the RY40002 is electric and runs with a 40 volt battery, so no spark plug and carburetor! :>D Replace the battery, lubricate everything from the motor to the head. Check the motor with nothing attached to it. The carbon brushes may need replacing or its bearings need greasing.
Includes (1) RY40002 40V Power Head and (1) RY15523A Expand-It Trimmer Attachment · Compatible with All Ryobi 40V Lithium-Ion Batteries (Sold Separately) ...
US$119.90 · Out of stock
Have an assistant start and hold the trimmer. At idle, there should still be a little drag on the clutches to make the shaft spin on that split shaft trimmer with the accessory head removed. No need to rev it or do anything fancy, but teamwork will make it safer.
Now forget about the engine and clutches - does the accessory head spin freely when turned by hand (removed from engine still!) and with a clear rotation of the shaft end visible inside the connector socket? Is the shaft end square with sharply defines angles, or rounded off? Does swapping in a different accessory function normally and as expected?
Sometimes the nub end of the shaft wears. Worse, the socket on the engine side has eaten itself to pieces. Worse, worse yet, clutches in the engine side that engage the accessory shaft are worn and there is simply no transmission of power. Good luck, hopefully this info will set your boots in the right direction!
Either the cintrifugal clutch is not engaging(if that model has one). Or the drive cable is snaped, or the rotary head drive lug is stripped. Pull off the drive head(where the nylon cord goes) & behind it is a flexable cable that transmits drive from the motor to the drive head(bobbin).pull it out and see if its broken.Check The rotary drive head lug,its on the top of the drive head (bobbin) you removed.
hope this helps
Regards Andrew Porrelli
the head drive is probably craked or stripped or the driver is broke, to check this, remove the head and inspect, these replacement parts normally are pretty cheap.
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