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Set Screws and Chain NOT Included. Centrifugal Clutch 10 tooth, 3/4" bore, #40/41/420 chain with 3/16 key built in. Common clutch for 3.5-7hp engines using #40/41/420 chain. Mounts onto crankshaft using bolt and washer on the end of the crankshaft.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.