Question about Toro Lawn Mower With Toro Power Tools

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Toro lawn tractor 46in pto belt keeps falling off

Earlier in the spring the pto belt broke.. So I replaced the belt with one purchased at the dealer. Since then the belt falls off during every use.. I put the belt back in place it works fine for awhile and off it will go again.. I took the belt off again and now it's got flat and worn spots and it's less then a month old. why is it falling off and tearing up so quickly.. any solutions on how to keep this from happening?

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Ensure the pulleys are exactly in line.

Posted on Jul 14, 2017

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SOURCE: Toro self propelled mower rear wheel keeps falling off

Are these regular bolt on wheels? Have you changed the nut?

I would expectc to find a "Stover" nut on such an appllication. Stover nuts are similar to "NY-Lock" but without the nylon lock. Rather, Stover (and you have to ask for them at the hardware or auto parts place), are not round and/or have had a certain side portion punched to make the nut hard to put on. Some well meaning back yard mechanics (read me) have 'fixed' the Stover by running a tap through them maning them easier to get onto the threads ... but alas, it didnt stay. That was how I learned about Stover.

Let me know if this helps.

A

Posted on Sep 21, 2009

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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.

  3. Remove the metal rod guard below the engine pulley. It's held in place on one side with a bolt, and the other side with a cotter pin.

  4. Take a large pair of channel lock pliers (about 18 in long work great) and clamp them down directly on the engine pulley, but not so tightly you distort the pulley.

  5. Remove the bolt from the pulley. It's a right-handed bolt, so turn it counter-clockwise to remove.

  6. Slide the pulley down the shaft until you can work the belt off. If the belt is too tight, then remove the spring from the idler pulley under the tractor. It's hooked on a bolt near the side of the tractor. You can remove it by grabbing the end of the spring with a pair of needle-nose vise-grips and slipping the end off the bolt. Then remove the old belt from the tractor.

  7. Take a new belt (preferably Kevlar) and start at the back of the tractor (with the pulley under the cooling fan) and thread it through to the front of the tractor. The flat side of the belt rests against the idler pulley with the flat sides.

  8. Work the belt over the engine pulley and slide it back on the shaft. Tighten the bolt on the engine pulley hand tight. Then check the belt to make sure it hasn't slipped out of the groove on the cooling fan pulley.

  9. Clamp the engine pulley with the channel lock pliers and tighten the bolt.

  10. Make sure the belt is routed correctly on the idler pulleys. If you had to remove the spring on the idler pulley, replace it. You can do this by grabbing it with the needle-nose vise-grips and placing it on the bolt-make sure it's above the washer. Then remove the vise-grips and gently pry it over with a small screwdriver until it slips into place.

  11. Replace the metal guard below the engine pulley. Hook the mower deck back onto the deck hanger. Replace the battery compartment and battery. Unblock the mower.

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