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42" Snowthrower Alignment Washers

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I have a Simplicity 42" snowthrower model #: 990745. I need to know how many washers there are between the drive pulley for the blower and the tube which the shaft goes through to drive the chain. I took the pulley off and lost them. These are the washers with the keyway cutout in them. Please let me know, thanks. Brandon

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It appears to be 7, three on sproket side and four on pulley side. Here is OM/PL http://bsintek.basco.com/BriggsDocumentDisplay/default.aspx?filename=heCBEN8arJ7rE3Cvh5kbp796Dq

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The parts manual, http://bsintek.basco.com/BriggsDocumentDisplay/default.aspx?filename=heCBEN8arJ7rE3Cvh5kbp796Dq shows 4 washers. The schematic shows the needle bearing outside of the washers which is wrong. The special notched washer part #8061012 is now #1729259. I use as many as necessary to have the best belt line up. Note that this model blower has the pulley hub toward the chain, the setup used for the 2 pulley hitch. If you're using the single pulley hitch, then the pulley hub should face outward.

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