Not difficult. Take off the bolt holding the secondary clutch onto the jackshaft. Make sure you don't lose any of the washers! The clutch then slides right off. Frequently a large washer (like 1/2" thick) doesn't come out with the bolt, so it may drop out onto the floor as soon as you turn the clutch to a horizontal position.
Turn the secondary clutch over and lay it on the ground. Turn only the top sheave counter clockwise and hold it in place by squeezing the sheaves together with one hand. Hit the helix with a rubber mallet. Use a snap ring pliers to take the snap ring off. Let go of the sheaves and the helix will pop out. Grab hold of the helix and spring AS A SINGLE UNIT. Take note of what hole the spring is in the helix. Stock position is the #2.
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