You might be able to get the assembly out in one piece if you remove the top cover of the SM 420 transmission first. Even then it would be a tight fit. Make a sheet metal cover plate, or even use heavy cardboard to keep dirt and crud out of the transmission.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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