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Your cart is empty.This a replacement O.S. Engines Woodruff Key. A Woodruff Key is a semi-disk that locks the Drive Washer to the Crankshaft. This Part Is Used With The Following O.S. Engines FS-72-a FS-70 Ultimate FS-56-a FS-52 Surpass Heli FS-52 Surpass FS-48 Surpass 91 SZ-H 91 SX-H 91 SX-H C-Spec 91 RZ-H DH 91 RZ-H 61 SFN-H 61 SX-H 61 SX-H WC 91 SZ-H PH 61 RX-H RE 61 RFN-H 50 SX-H 50 SX 40 PS NOTE: This part may be compatible with other O.S. engines. Please check your owner's manual and cross reference the part number to verify that this is the correct part for your engine.
Gregory S Meyer
Reviewed in the United States on October 21, 2023
Just what I needed.
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