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Discussion Starter · #1 ·
I have a MF14 and it keeps breaking belts. I have broke three green gates belts already this year. I have about 1.5 acres I mow. The mower has been restored. Anyone else having any issues like this?
 

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Discussion Starter · #3 ·
I did notice a few nicks in it elsewhere but found nothing for it to catch on. I am on the verge of just going and getting a new mower
 

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They don't just break for no reason, there's got to be something rubbing, cutting into it, maybe bad bearing or deformed pulley???

I have sat on MF14 and MF16 cutting grass for a 3 to 4 hrs in 1 day, no problem with belts.

Oh BTW welcome, lots of good people here.
 

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Welcome to GTTalk! In case you are wondering- FHP = fractional horse power or in other words a light duty belt. If you try to pass a lot of power through one it will not last long.
 

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Discussion Starter · #7 ·
they are power rated belts. the pulleys seem to spin freely and smooth. They did not look deformed when I was spinning them. It would also just fling the belt off also before it broke. How tight are they supposed to be?
 

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BTW which belt is breaking, the one off the engine or the one on the deck?
 

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The 2 smaller pulleys on the mule drive, are they in good shape, no bends or dings in them, bearings good?

That belt has a few twists in it so anything not quit right is just going to make things worse.
 

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Discussion Starter · #13 ·
correct. they are good. now they do not run straight front to back. If they were tires the toe would be in if that makes sense
 

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I just took a look at mine and they are straight, parallel to one another, no toe in or out.

Hopefully some else chimes up and can give more info on how there suppose to be.
 

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I did notice a few nicks in it elsewhere but found nothing for it to catch on. I am on the verge of just going and getting a new mower
I'm in NC. Let me know if you don't want it.
 

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On a more helpful note, now that I have read beyond your second post, I'm going to say you MUST have some sort of pulley alignment problem. I rescued an older Massey with belt alignment problems and it would wear in one particular spot on the belt for some reason, I'm thinking that may be what you are experiencing. Can you get at those two mule drive, or guide pulleys and figure out why they have some "toe-in" as you called it? Might be bad bearings, might be a bent shaft. You can probably get replacement pulleys somewhere local.

Welcome to GTTAlk, by the way. We would love to see pics of your new tractor.
 

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I have a14 and 16 The 16 has the pulleys straight and had a belt throwing problem so I made an L shaped bracket for the drivers side pulley to keep the belt on. No problems since. The 14 had the toe in on the pulleys and never had a problem with the belts. I'm guessing the problem is the deck spindles with with bad bearings seizing. The spindles CAN be welded up and machined back to specs if that is the case. I'm guessing the toe or no toe was a change in design later on.

I was told by many that you can't do that but I remembered that I had a V8 crank welded and recut 50 years ago. All they have to do is weld the crank up, Flame heat and cool slowly to take out the temper, machine it, and reheat and retemper. l have a WW 2 machinist book that shows how to retemper by heating steel to different colors and cooling in oil.
 

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Discussion Starter · #20 ·
From what I was told from the previous owner, the deck bearings were replaced. I got the pulleys straightened out today at work and got a new belt. About 30mins of cutting the grass when I got home the belt broke. No other nicks in it this time. Also the belt was hot when I picked it up. Almost too hot to touch.
 
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