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Old 06-17-2020, 07:16 AM
mrfred54 mrfred54 is offline
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Location: Michigan
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Keeps throwing deck belt off. New belt, all pulleys are good, tension spring is new. Spindle bearings seem to be good,they spin easily and no noise. This is the third belt and it just came off. Tried mowing at different heights and makes no difference. Open to suggestions from anyone. Thanks
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Old 06-17-2020, 08:36 AM
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ol'George ol'George is offline
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Can't say I've ever seen yer little type of lawnmower, much less worked on one.

But looking @ cubcadet parts lookup on our header page, it appears yer deck has 2 idlers, 1 is fixed and the other is on a movable assembly with attached tension spring.
I would first insure that both idler bearings are in good shape,then insure that the idler mounts are in good shape and not bent out of intended position.
The belt should run in, or close to, the center of the idlers.
Also insure that the tension idler pivot is lubricated and not worn out.
I would also look at the belt in operation, being careful not to put yourself in harms way, but watch the belt to see if it seems to be following it's intended path on the idlers/pulleys.

These suggestions are just what one would do to diagnose a belt problem you describe.
Also you made no mention of the belts you are purchasing.
Most run of the mill HWD store belts are useless in a lawn/garden application.
Some applications they work fine, others, not worth a shit.

Lets us know what you find, as it helps others.
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Old 06-17-2020, 03:58 PM
dbuck dbuck is offline
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Quote:
Originally Posted by mrfred54 View Post
Keeps throwing deck belt off. New belt, all pulleys are good, tension spring is new. Spindle bearings seem to be good,they spin easily and no noise. This is the third belt and it just came off. Tried mowing at different heights and makes no difference. Open to suggestions from anyone. Thanks
1st of all that is a lawn tractor.

A friend has aSLTX1050 which is the same tractor, the only difference is yours has a 54" deck and his a 50. The problem was the frozen idler and the wrong belt. Not a CC belt. The non CC belt did not have the right pitch, therefore it would not set down deep enough into the pulleys, riding high and with a frozen idler kept throwing the belt.

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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

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