I've put on a bunch of rings by hand. Just start them on the top of the piston, and gently work them around until the end of the ring goes into the 1st groove. Work it out of the groove before the other end gets into the top groove. Then do the same to the second groove. Then work it out of the second groove into the third groove. Don't allow the entire ring to fit into the groove until it reaches the groove it belongs into. Then install the oil ring then the last ring goes into the top groove. It should just take a few seconds when everything is going good. I was always cautioned against expanding the rings too much, since they may either expand too much or break.
I am sure that other members may have different advice. I used to build chevy and ford race motors in the seventies.
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John
Proud Owner of a Model 100 and a Model 124.
A homemade cart, 2 x 42" mower decks, a 38" deck,
a 42" front NF blade, and a lawn sweeper!
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