the most common cause of the deck belt breaking would be a idler or mandrel pulley not lined up properly or the bearings going out and making the pulley wobble or the belt is getting rubbed somewhere. check the pullies on the deck to make sure they turn freely and are not loose and wobbling around.Click to see full answer. Keeping this in view, can you fix a broken lawn mower belt?The mower won’t move with a broken or worn drive belt. Replace the drive belt with a manufacturer-approved replacement part if it’s worn or broken. This drive belt replacement procedure works for common Craftsman, Toro, Troybilt, MTD, Husqvarna, Poulan, Murray and Ariens front-wheel drive walk-behind lawn mowers. what is the difference between a deck belt and a drive belt? deck belts usually last about 1/2 the time a drive belt does they also get more debris around the pulleys and take much more punishment than drive belts. Thereof, do lawn mower belts shrink? OK you can be too tight end result of that belt snaps belts do not shrink nor do they stretch.How many belts are on a riding lawn mower?Most mowers have at least two drive belts. There are two belts on most riding lawnmowers. One belt connects the transmission of the lawn tractor to the driveshaft pulley and the other belt connects the mower deck to the driveshaft pulley.
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