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Replacement Engine for Allis 21" Push Mower

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Picked up a fairly decent (for being 25+ years old) Allis-Chalmers 21" push mower. It runs, but the little 3.5 HP Briggs smokes pretty bad. Owner has re-ringed once already. I'd like to just go get a new motor and bolt on it, but would want an original model number. Anyone familiar with these with these 3.5's and any advice on what to do? Thanks Jack

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Well I don't know much about what motor those old mowers have but the price of this motor would be cheaper than a rebuild if you had to have machine work done to it.There is another one listed here as well for $10 more.Check this link out [url]http://www.smallenginewarehouse.com/product.asp?PN=BV35LM-7811316[/url]

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