Troybilt mower suddenly won't go fast

dgpopSeptember 15, 2012

I have a Troybilt (MTD) riding mower model 13AZ609H063. A week ago my daughter was mowing and suddenly it wouldn't go forward. I found that the spring holding the idler pulley at the transmission had broken/fallen off. While I waited for the part, I simply used string and strong rubber bands :-) to keep tension on the pulley and she was able to mow fine. Once the spring arrived I installed it and now you can push the drive pedal about as hard as you can and you move along a slow pace - simply can't go any fast and can't push the pedal any harder. This is a variable drive (I guess that's the right term) with just forward/neutral/reverse and the speed comes from how far you push the drive pedal. I've looked underneath the mower and the pedal seems to be doing what it's supposed to do - tightening the whole drive belt system so that power transfers from the engine pulley to the transmission pulley in the back. Seems like the new spring is too strong and not allowing the belt at the engine pulley to get tight enough but that's just a guess. Any suggestions?

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tomplum

Well, there is that question of whether or not you have the proper spring. There are many to choose from. Did you have the old one to match up? Any question that the spring is hooked up in the proper places? It goes from the tension arm then to the frame rail or some have a extra nutted bolt it hooks to rather than directly in the frame. If it drove fine w/ the temporary set up you had, it would indicate that the rest is Ok. In theory if it is hooked up properly, the VS pulley sticking is the next likely cause. Try running the pedal through the motions whilst still in neutral first, then with it in gear.

    Bookmark   September 16, 2012 at 6:36PM
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btotzeck

I have a troy bilt lawnmower GTX-2446, We bought it used and I can walk faster then it moves. Is there a way to make it move faster?

    Bookmark   May 4, 2013 at 9:48AM
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tomplum

Likely worn traction belts /stuck variable speed pulley. Should you choose to go further, be sure to use the OEM belts and if you replace the front belt- do the rear at the same time. MTd would like you to always replace both at once. Know that your brake fully releases as well. If not, you could try walking slower,,,,

    Bookmark   May 4, 2013 at 8:19PM
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tomplum

Likely worn traction belts /stuck variable speed pulley. Should you choose to go further, be sure to use the OEM belts and if you replace the front belt- do the rear at the same time. MTd would like you to always replace both at once. Know that your brake fully releases as well. If not, you could try walking slower,,,,

1 Like    Bookmark   May 4, 2013 at 9:15PM
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