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You didn't specify a tractor model or serial number, but..... If it is an older handstart or very early electric start tractor (starter on the top), there is probably a groove near the outer end of the crank that you can use to pry the crank outward and force the flywheel in. That way you can do it by yourself using a couple of long screwdrivers. You might have to remove the cranking ratchet from the flywheel to get to the groove. If you have access to some long shim stock, you can stick two pieces of .0075" Starrett stock between the flywheel and the spacer, pry the crank shaft out through the slightly tightened bolts until it is taught, then tighten the bolts, wiggle out the shims, and you have a .007-.008" setting. If it is a newer electric start only flywheel, the steel nut is used to draw the crankshaft outward while forcing the flywheel inward, and after the endplay is verified , lock to two large bolts down to their correct torque, stake the tin/steel nut fast so it doesn't turn at a later date, re-check the endplay and you are done. I set the flywheel endplay to .005-.010" using a dial indicator. Frank
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