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Replacing the old one on my SC4 was a breeze since it lines up exactly as item 157 shows on the parts list. The machining is clean and it fits tight without any play, so I’m glad I grabbed it.

Finally, a retainer that's machined to the right tolerance for the SC4—no wobble on the intermediate shaft. The part number matches the diagram exactly, so installation was straightforward.

I was relieved this part was listed as item 157 on the SC4 parts list—made it easy to confirm I’d ordered the right one. The retainer fit securely on the intermediate shaft without any play. My machine’s running smoothly again.