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Compatibility
This part will fit the following 6 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
SimplicitySimplicity 551 M (1692320) - Simplicity 20" Snow Thrower, 5hp (SN: 10000 & Below)Auger & Drive (S/N 10, 000/20, 000 and Below)
SimplicitySimplicity 551 E (1692321) - Simplicity 20" Snow Thrower, 5hp (SN: 20001 & Above)Auger & Drive (S/N 10, 001/20, 001 and Above)
SimplicitySimplicity 1692978 - Simplicity 20" Minnesota Vikings Snow ThrowerAuger & Drive Group
SimplicitySimplicity 520 M (1694585) - Simplicity 20" Snow Thrower, 5hpAuger & Drive Group (178adg)
SimplicitySimplicity 1321 PP (1691099) - Simplicity Walk-Behind MowerPARTS LIST FOR MODEL 1321PP (1691099) & (1691261)-21" Mower
Description
The purpose of the Pulley or Sheave is to ensure smooth movement of the belts within your equipment or engine. Symptoms of a bad or failing pulley could include squealing during operations and sluggish or slipping belts. If you find damage to a pulley, like metal burrs or dents, also inspect the associated shaft and bearing for similar signs of impact or abrasion. When you replace a pulley, strongly consider replacing the associated belt so that you get the maximum performance improvement.