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Drive belt is too loose, already replaced belt and pulley. no drive power, plenty of deck power. Tractor is 8-10 years old, drive pulley portion of the double engine pulley split, so I replaced it and the drive belt. I can't make it up hills without a load that I used to , never mind pulling anything. Is there an adjustment? I tried pulling on the long spring (#55), but extra tension didn't seem to tighten the belt. (I was going to replace it.) Craftsman Model TRACTOR - 917258591

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  • rickhan Nov 18, 2010

    Didn't see any build up, so I looked further. Turned out that the rear pully on the transaxle was worn out -- I should have replaced it when I replaced the front one.
    I also replaced the tension spring. The old one was stretched compared to the new one. Easy to replace if you run a long, heavy wire through the chassi and stretch the spring that way.

  • Anonymous Mar 16, 2014

    I have lost drive and can't see how to access the drive belt pulleys to inspect or replace the belt

  • rickhan May 26, 2014

    Also, if you pull heavy loads, especially on hills, you will wear our your transaxle. They can be rebuilt or replaced. They really aren't heavy duty in this model. The current yard tractor has a transmission twice as powerful, or more.

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I had the same problem with my Craftsman Lawn Tractor. The Drive Belt (which is not adjustable) is only engaged when the Brake Pedal is released (the Brake Pedal is located on the left side of the tractor, near the foot rest on my Tractor).

The Symptoms: My Tractor lacked driving power, and would not go up an incline, but the mower deck was powerful and working fine, even though the Tractor seemed to lack power and moved slower than usual, and would not travel up an incline.

I too, changed the Drive Belt, which initially seemed to help somewhat for a very short period of time, and then the same, lack of power problem, re-appeared again. The belt was not the problem, but only seemed to work somewhat due to the rougher texture of the belt's surface against the pulleys.

I also changed the Plastic Clutch Pulleys that engage the Drive Belt, thinking that they may have been worn down to a point that the Drive Belt could not fully engage with these Pulleys. No Luck.

NO ONE, NOT EVEN SEARS ON-LINE REPAIR ADVICE CENTER HAD A SOLUTION. THIS WAS VERY FRUSTRATING INDEED.

There had to be a solution: After much investigation, I eventually discovered the problem, which actually was easy to solve, and I would like to share this simple solution with others facing this same Frustrating Problem.

The Brake Pedal, when released, causes the Drive Belt Clutch Pulleys to move, and thus Tighten the Drive Belt. When you look under the Tractor, there is a Protective Metal Plate mounted to the Bottom of the Main Tractor Frame which covers the Brake Pedal Shaft and attached Mechanisms. Over time, Grass Builds up in between the Protective Metal Plate and the Tractor's Main Frame Deck, creating a very narrow space between these two pieces of metal.

This area is very difficult to get at, and almost impossible to clean out. Over time, Grass Clippings accumulate in this hidden area, and harden to an almost rock hard clump.

These Hardened Clippings accumulated between the Brake Pedal Mechanism and its fully released metal stop position. Thus, preventing the Brake Pedal Mechanism from moving to its fully engaged position.

I used a long screw driver to break up the compacted grass clippings, and an Air Compressor Blow Gun to break up the packed grass and blow the area clear. It takes awhile to do this cleanup, and is a bit messy, so do it outside, but be patient, and be sure to clean out all the grass that is lodged in this hidden area.

What was happening was that the Packed Grass was so dense that the Brake Pedal could not Fully Release, thus only Partially Engaging the Clutch Pulleys and the Drive Belt, hence the appearance of a loose Drive Belt even when the Brake Pedal was released.

Once the Packed Grass Debris was cleaned out, you will immediately notice the Drive Belt being tighter than it was previously when the Brake Pedal is released, and when you test drive the Tractor you'll find that everything works perfectly, like it was brand new.

Good Luck...
Rayko

Posted on Nov 15, 2010

  • rickhan Nov 18, 2010

    Couldn't find any build up in mine, so I looked further. Turns out the rear pulley on top of the transaxle was very worn--I should have replaced it when I replaced the front one.
    I also replaced the tension spring. The old one was very stretched compared to the new one. It was easy to install if you stetch the spring by threading a heavy wire through the chassi.

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I need help putting rear end back together on a 10 hp30 Murray riding lawnmower


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My lt1000 craftsman riding mower belt broke. I bought a new one and can not seem to find the manual to see how to replace it. Can you show me a diagram please?


On your mower, lift up the seat and you will find a silver sticker with numbers on it. There is a 9 or 10 digit model number. It will look like 123.456789 Go to www.searspartsdirect.com and input your model number and perform a "model" search. I am assuming that the belt you are referring to is the deck belt. Go to the deck section and you will see a basic pattern of what shape the belt will have when installed. There are 2 kinds of pulleys on your deck...V-groove & flat side. The v-groove pulleys go on the inside of the belt, the flat side will go on the outside of the belt.

If the mower is more than 3 or 4 years, it is probably a good idea to replace the drive belt(s) also.

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I'm having trouble replaceing the motion drive belt on my LT1000 lawn tractor. The mowing deck is off, the old drive belt is off. I can't get the belt around the transaxle pully. Any suggestions?


Often there is a keeper on the back of the pulley, and the belt must go inside the keeper. Get an inspection mirror up in there to look if necessary. Start by putting the belt on the transaxle pulley, then on the PTO pulley, then on the idler, last have someone sit on the mower and depress the clutch pedal while you put the belt over that pulley.

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2 Answers

The belt dry rotted and flew off without me being able to remove it myself, now I need to know how to install the new drive belt.


To install the drive belt you will have to remove the drive belt first.
Follow the procedure: ---
Park the tractor on a level surface. Set the parking brake and remove the key from the ignition. Study the belt replacement guide decal located underneath the left foot board for proper belt routing instructions.
Remove the mowing deck by first moving the attachment clutch lever to the disengaged position (toward you). Move the attachment lift lever all the way forward to lower the mower housing to its down position.
Crawl beneath the tractor and roll the drive belt off engine pulley (it hangs directly beneath the engine). Remove small retainer clip that holds the clutch spring to the pulley bolt located at the center of the mowing deck. Remove the large retainer springs (two of them), then slide the belt collar away from the mower housing and off the housing bracket.
Disconnect the anti-sway bar rods from the chassis brackets by removing the retaining cotter pins. Disconnect front links from the mower deck by removing retaining cotter pins. Disconnect the suspension arms from the rear mower deck brackets by removing the two cotter pins.
Move the attachment lift lever all the way to the forward position to raise the mower suspension arms to the full up position. Slide the mower deck out from beneath the tractor.
Crawl beneath the tractor and roll the drive belt off of the stationary idler pulley and the clutching idler pulley. They are both located immediately adjacent to the engine pulley. Be sure the belt is already away from the engine pulley, as well.
Push the drive belt slack toward the rear of tractor. Remove the drive belt from the Trans axle pulley by taking it over the trans axle pulley while compressing the movable belt keepers surrounding it. Remove the old belt from the tractor by pushing it clear of the center span keeper (located beneath the Trans axle pulley).
Install a new drive belt by following the reverse of the instructions for removal. Test the tractor and mower for normal operation.
 Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.
 
 
 

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1 Answer

I have a Toro LX466 riding mower. The drive belt


How to replace the drive belt on a Toro LX466 Lawn Tractor

1. Jack up the front of the mower-place a couple of blocks under the front wheels (retaining wall blocks from your flower bed work great). Block the back wheels so the mower won't roll off the front blocks.

  1. Remove the battery and battery compartment from under the seat. You can now see the cooling fan blade under the seat. The belt runs from the pulley directly under the fan to the front of the tractor.

  2. Lower the mower deck to its lowest position. Remove the deck hanger rod from the slots in the front of the mower deck.

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Belt diagram


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l l
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/ l_______
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Hi there,

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