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  1. #1
    New Member
    Join Date
    May 2013
    Posts
    1
    Location
    Clarkdale GA.
    Tractor
    Sabre 1338GS

    Default keeps throwing deck belts

    I have a saber lawn tractor 1338 GS Model 13 horsepower Briggs and Stratton. it's starting to throw the deck belt, when the PTO arm is engaged I see the belt bouncing all Steins and the tensioner pulley bouncing up and down before it throwS the belt off. can the tensioner pulley be adjusted to tighten and stop bouncing and throwing the belt?

  2. #2
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    47,509
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: keeps throwing deck belts

    check all pullies for slop.. spindles included. also check spindles for drag.. a high drag can throw a belt.

    check for off axis bends too. IE.. un-aligned pullies. belt may show wear on one side or another from this

  3. #3
    Platinum Member
    Join Date
    Jun 2004
    Posts
    815
    Location
    Armstrong, BC
    Tractor
    Kioti DK35 SE HST (2011)

    Default

    I had a kubota that kept throwing the fan belt. After much frustration I spoke with someone who said the internal cords could be broken. The belt looked fine, but I replaced it and the problem was fixed. It is something to try after all other options.

  4. #4
    Veteran Member
    Join Date
    Dec 2000
    Posts
    1,673
    Location
    Southern VT, Southern ME
    Tractor
    John Deere 4100 HST /410 FEL, R4s

    Default Re: keeps throwing deck belts

    I had an engine pully belt that kept coming off...new belt cured that

  5. #5
    Veteran Member yelbike's Avatar
    Join Date
    Nov 2011
    Posts
    1,416
    Location
    Near Winnipeg, Mb, Canada
    Tractor
    John Deere 2305, 2320,Z465

    Default Re: keeps throwing deck belts

    Sounds like the tensioner, possibly needs a new spring. But also check the pulleys are all on the same plan, a long level works great. Hand spin each spindle and pulley looking for tight or wobble. Check for a bent deck also, cracked weld is a possibility also. Good luck.
    Carefull what you aim for, Aim for nothing and you will achieve it with amazing accuracy.

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