The Worm Gear is an authentic Stihl replacement part designed specifically for the MS 500i and MS 500i?W chainsaws, identified by OEM No. 1147 640 7110. This precision-moulded gear is crafted from durable polymer, ensuring reliable performance and longevity. This essential component effectively transfers drive from the clutch side to the automatic chain oil pump, maintaining consistent lubrication for the bar and chain. By ensuring steady oil flow, the Worm Gear helps your chainsaw cut smoothly while minimizing premature wear on the cutting system.
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