Look, I'm just trying to find good homes for these orphan parts, next stop for them is the dumpster. Save the earth- buy this part!!

IF YOU ARE LOOKING FOR OTHER PARTS THAT WERE REMOVED FROM THIS UNIT, PLACE 
"SHINDAIWA 575 / 1015900" IN EBAYS SEARCH BAR

Genuine OEM part!! 
NOT AFTERMARKET OR "WILL-FIT" PART

alternate number:
P021022060 3/8" pitch rim 7 drive tooth

includes:
22150-51520 17503314731 68210 rim
22155-51530 V311000120 rim cover

FITS:
SHINDAIWA 575 / 1015900
550,Clutch Drum, Brake 
575,Clutch 577,Clutch Shoe 
577P,Clutch, Clutch Cover 
577PEMC,Clutch, Clutch Cover 
680,Clutch Drum, Brake 
695,Clutch

This part was harvested from a SHINDAIWA 575  with a serial number in the 1015900 range
it had cold compression exceeding 110 psi
It had excellent ignition (thick blue spark jumping a 10mm gap)

Free returns are available, but abuses of ebays return policy will be reported
(sorry, been there, been burnt)