WHY does my Riding LAWNMOWER BELT keep coming off, getting DAMAGED? BAD BELT or SOMETHING ELSE?

Jeff's Little Engine Service checks and inspects a Craftsman Riding Lawnmower that the CUTTING DECK BELT keeps coming off and is getting DAMAGED , belt breaks. Is it just the cheap , faulty AFTERMARKET belt or is something else going on? Inspection, belt routing, pulley check , bearings test lawn mower Briggs and Stratton Kohler Tecumseh model engine horsepower
UPDATE 9/12/19 : IT WAS THE cheap ass aftermarket BELT. IT WAS CRAP!
Tutorial by Jeff's Little Engine Service
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Видео WHY does my Riding LAWNMOWER BELT keep coming off, getting DAMAGED? BAD BELT or SOMETHING ELSE? канала Jeff's Little Engine Service