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I have a Sears snow thrower model 536.887993. How is the impeller secured to shaft?

The impeller is spinning freely on the shaft. It won't throw snow. Is it attached to the shaft by set screws or key or what?

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Manage My Life
The impeller is held to the shaft with 2 roll pins. To replace them you will have to remove the auger and gear case from the snow thrower and drive the broken parts of the roll pins out of the shaft with a drift punch.

The part number of the roll pins is STD572512, and the cost is around $2.16 for a pack of 2.
by Manage My Life
January 6th, 2009
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