Thanks for both responses and the help. Here's what I THINK I found out:
There are two different types of spacers made. One is like a collar, the spring does indeed fit inside it. I would think that it helps keep the spring from distorting laterally. (The Colt .45 recoil spring design has been improved this way on later models)
The second type of spacer is what I have. It is solid....looks like an aluminum pilot bushing , slides on the shaft and the O.D. matches the O.D. of the teaser Spring, and the length is approximately the same as well. I do believe that REPLACES the teaser spring....at least, that's the way I assembled it. I left the teaser Spring out. Clutch works like a charm.
The whole reason I did this is that the tesser spring broke and then would bind up the clutch and prevent it from disengaging SOME times. ((Drove me crazy figuring it out). When I watched some videos on YouTube, it seemed that upon disassembly, the teaser Spring was often broke (but not effecting clutch function). I usually dont like to deviate from stock (and I prefer OEM parts, too) but I'm not happy about pulling the motor to fix this 5 dollar problem....my grass is 10 inches tall. ☹
I can say this was the first time I worked on a Cub (any Cub) and learned a lot, and am VERY impressed with the way they were made back then, and just enjoyed the wrenchin'. Want to pull it all apart now, this winter.
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