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post #1 of 5 Old 05-19-2019, 11:15 AM Thread Starter
243
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GT6000 throwing belt...

...this is back when I bought the GT ~2014 and with the exception of some minor problems it has worked well for yard duty.

I posted the photo because I forgot the year, maybe 92-94

It is throwing the blade belt constantly, I have to almost max out the tension pulley to put the belt back on so I "think" the belt is not stretched too much.

I searched the owners manual and don't see any belt guards associated with this belt.

I have the deck set LOW to keep as much light hitting the soil to help Bermuda to geminate, deck is about .75-1" above the concrete.

I can see the belt leaves the blade pulley at an angle upwards towards the idler and tension pulley, am I simply using the deck to low for it's intended purpose and that is causing the issue?

It does not look like the deck or spindlle are damaged.

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post #2 of 5 Old 05-19-2019, 12:30 PM
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Re: GT6000 throwing belt...

You may have the deck set too low for the belt operation angle.

Check with deck down as to how you would mow. See if there's one/two belt guide rods(keepers) along the belt length to see if they're possibly too short in length. You'll know immediately by seeing the belt being bent downwards towards the deck pulley off the belt keeper rod(s).

If so, you need to lengthen them to not keep pulling upwards on the belt, which could be one of the reasons of the belt being pulled off the deck's drive spindle pulley. Removing them is not a solution, as they also serve as belt deflectors and alignment from vibrations during operation.

Only other solution I can think of is to raise the deck some to where it won't have the deck's drive belt from rubbing on the belt's keepers and pulling the belt off deck pulley.

If there's a possibility that this is original or older deck belt, it may be stretched out too much, even though it looks good and under usage is stretching out more and being flung off. Replace belt.

I've got a '03 GT5000 and I save lots of money by going to Vbelts 4 Less to get all my belts for my mowers, as some of them are Kevlar bound, and are quite expensive at stores.

Del

1967 Cub Cadet 102-Kohler K241(10hp) Kept as original as possible.
1990 Kut Kwick CL20-60-Onan P220(20hp) Front deck/rear steer commercial mower
2003 Craftsman GT5000-B&S engine(24hp) Manual transaxle

Last edited by TriumphMan; 05-19-2019 at 12:39 PM.
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post #3 of 5 Old 05-19-2019, 05:50 PM Thread Starter
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Re: GT6000 throwing belt...

Del, thanks.

The belt is definitely angled upwards when it leaves the blade pulley, and there are no deflectors. I will get a picture and post it today.

Does your GT have the deflectors?
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post #4 of 5 Old 05-19-2019, 08:27 PM
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Re: GT6000 throwing belt...

I just went and looked at my motor/deck setup. '03 GT5000 model with a 48" deck, so yours could be configured differently.

The belt comes off the engine pulley(electric solenoid type) and belt goes to a free-wheeling 2-3" wide flat style pulley(this allows the belt to ride up/down according to deck height to keep drive belt in alignment) that's spring loaded for good tight belt tension. From there it goes to the right pulley(when seated on mower) that is a double drive pulley(top is deck drive and bottom pulley is for deck blade belt), then doubles back to another pulley at decks' rear center, then straight back to engine pulley.

On the motor end I didn't find any keepers for my system. Apparently, the one pulley that has the powerful spring keeps enough tension, they felt it didn't need any belt alignment/fling keepers.

My mom's DYT3000 w/hydro drive using a manual hand lever deck engagement system, does have some spring-steel flat belt keepers at the motor pulley and the drive pulley, along with a spring tension free-wheeling pulley.

1967 Cub Cadet 102-Kohler K241(10hp) Kept as original as possible.
1990 Kut Kwick CL20-60-Onan P220(20hp) Front deck/rear steer commercial mower
2003 Craftsman GT5000-B&S engine(24hp) Manual transaxle
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post #5 of 5 Old 05-19-2019, 08:49 PM
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Re: GT6000 throwing belt...

243, I just thought of a few things if it will work for your deck.

If your deck has some adjustability for bringing up the front of deck(higher in front than rear), you might get away with enough tilt for deck to still cut on deck's back side while front keeps the pulley in better alignment to not keep flinging off.

I know we should keep decks in level alignment, but if could get that front deck nose up, you might have a winner that's cheap on the pocket book while still giving you the cut you need for your grass. Only downside, is you might need to slow down some, but at least worth a shot.

This might also be a place where a farmer's trick of actually using bailing wire and a pair of pliers really does work to fix, if you can't adjust the deck's nose up enough from the deck hangers.

Another thought is removing, or fully adjusting upwards to not contact the ground, the deck's rear caster wheels while keeping the front caster wheels(if equipped and don't drag/cut into grass) in their lowest setting(heavily contacting ground) could also be a simple trick to try while the rear is free-hanging.

I see your mower picture, but don't know if your deck has a nose roller.

1967 Cub Cadet 102-Kohler K241(10hp) Kept as original as possible.
1990 Kut Kwick CL20-60-Onan P220(20hp) Front deck/rear steer commercial mower
2003 Craftsman GT5000-B&S engine(24hp) Manual transaxle

Last edited by TriumphMan; 05-19-2019 at 08:55 PM.
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