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Somewhere a long the lines of that's not how any of this is supposed to happen... The motor to deck belt is getting tighter and tighter to put back on at it throws the belt, don't even need to engage the idler pulley it so tight have the correct belt size B-85, with a B-86 belt it flips the belt before to throws it off currently every is loosened up and it's still tight. The engine to transmission is the correct belt of B-41 with the correct belt deflection. This has been going on for about 2 or so years now. Very frustrating and mind boggling







I want to get this issue taken care of before we install new seals in the hydro gear pumps

That's how I've been getting the belt on and off with the 1.5" wrench and screwdriver ? why and how is it tightening up it shouldn't be doing this at all, boss doesn't want to send it out to a certified Dixie dealer for them to fix

Actually measure the belt. Specs B x 88" (B85K)Many after market can be short. One of my vendors were sending me belts up to three inches short. Of course I no longer use them for any belt now other than the Briggs OEM belts.

Also note that since this is a deck deck belt it should be a Kevlar belt.

I'm just guessing but if belt is correct, maybe replacing springs would help? After so many heat and cool down cycles, springs might look OK, but they change their molecular structure, so maybe giving too much tension on the belts? If not that, check for play in rear axle bearings/bushings. Maybe axle bushings are so worn away, the axle is now farther away from the pulley and therefore tighter?

Huffy Dude said:

I'm just guessing but if belt is correct, maybe replacing springs would help? After so many heat and cool down cycles, springs might look OK, but they change their molecular structure, so maybe giving too much tension on the belts? If not that, check for play in rear axle bearings/bushings. Maybe axle bushings are so worn away, the axle is now farther away from the pulley and therefore tighter?

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Wrong way round
Springs get weaker over time not stronger.
ORiginally the spring was soft wire you could bend between your fingers.
After being wound on the mandrel it is heat treated to make it springy
Over time the heat treatment wears off
To do it with heat you need to cook the spring at 400C or better and if the mower is getting that hot you got bigger problems to worry about .

Got the new B85k from tractor supply have yet to field test it yet due to weather but it does appear to operate and shut the deck off when disengaged without throwing the belt off. Famous last words, right.

Only thing it's doing when someone snaps the the deck off the belt comes off the main deck pulley, I've told them to slowly disengage it

JCT268 said:

Only thing it's doing when someone snaps the the deck off the belt comes off the main deck pulley, I've told them to slowly disengage it

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It may be necessary to make a set custom belt retainer for that deck pulley. It would not be the first time I had make a set for some mower that kept throwing belts.

StarTech said:

It may be necessary to make a set custom belt retainer for that deck pulley. It would not be the first time I had make a set for some mower that kept throwing belts.

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Have a picture of the belt retainer?

JCT268 said:

Have a picture of the belt retainer?

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Sorry I thought I was dealing a mower tech. Maybe someone else has the extra time to explain what a belt retainer is and how to make custom ones as I am just back to the replacemen NZTR stter links and the mods need to get the steering straight; unless, the pavement hits 140 as that where I start getting blisters.

I'm just mechanically inclined we don't have a designated mechanic at work so they just throw me in to try to fix things

Got the belt to stay on while snapping it off, I had to adjust the idler pulleys tighter, all is golden now