How to Put Belt on John Deere Mower Deck?

To put a belt on a John Deere mower deck, first remove the old belt. Next, thread the new belt through the pulleys and around the deck spindle. Finally, tension the belt by adjusting the spring-loaded idler pulley.

  • Park the John Deere mower on a level surface, and engage the parking brake
  • Remove the old belt from the deck, being careful not to damage any of the pulleys
  • Clean any debris from the deck and pulleys
  • Install the new belt around the bottom of the deck, making sure it is routed correctly through all of the pulleys
  • Adjust the tension on the new belt according to your John Deere mower’s specifications


How To Replace The Mower Belt on a John Deere Riding Mower | Belt Replacement John Deere E120

How Do You Install a Mower Deck Belt?

Installing a mower deck belt is a relatively easy process that anyone with basic mechanical skills can do. The first step is to disconnect the battery and spark plug wire, then tip the mower onto its side so you can access the underside of the deck. Next, locate the tension pulley and release any tension on the belt by moving it away from the deck.

Once the tension is released, you can remove the old belt and install a new one in its place. Make sure to route it through all of the correct pulleys before re-engaging the tension pulley and reconnecting the battery and spark plug wire.

How Do You Put a Belt on a John Deere 54 Inch Deck?

Assuming you are referring to a John Deere 54” deck mower: Locate the idler arm on the right side of the deck. The idler arm is a triangular-shaped metal bracket that has a circular pulley at the apex.

There is also an idler arm on the left side of the deck; however, this one does not have a pulley. Find the end of the drive belt that is closest to the operator’s position. This end of the belt will be routed around the circular pulley on the right idler arm.

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Wrap this end of the belt around clockwise until it meets itself. You may need to pull on both ends ofthe belt in order to get it tight enough to meet. Now, locatethe other endof t he drivebelt.

Thisend shouldbe positionednear t hepulleyson bot hthesideofthe engineand underneat hthedeck whereitconnectstothe transmission(thesearebothlocatedontheleftside). Wrapthisendofthebeltaroundcounterclockwisetightlyuntilitismeetingitselfagainandpullingtightlyontheothersideatthesame time.

How Do You Tighten a John Deere Deck Belt?

Assuming you are talking about a John Deere riding lawn mower, the process for tightening the deck belt is as follows: 1. Park the mower on a level surface and shut off the engine. Disengage the mower deck by pulling on the deck lever.

This will cause the blades to stop spinning. 2. Locate the tension pulley near the center of the mower deck. The tension pulley is a large, metal pulley with a spring-loaded arm attached to it.

3. Place your hand on top of the tension pulley arm and push down firmly while you pull out on the deck belt. This will release any slack in the belt and allow you to tighten it properly. 4. Wrap the excess belt around one ofthe other pulleys onthe mower deck, then insertthe end ofthe beltintooneofthe slotsonthetensionpulleyarmandreleaseyourhand fromthespring-loadedarmtoallowittoreturn tonormalpositionandtightenthebeltautomatically.

How Do You Put a Lawnmower Belt Back On?

If your lawn mower belt has come off, you’ll need to put it back on before you can continue mowing your lawn. It’s not a difficult task, but it is one that requires a bit of know-how. Here’s a step-by-step guide to putting a lawn mower belt back on:

1. First, locate the point where the belt came off. This is usually at the pulley system beneath the deck of the mower. 2. Take a look at how the belt is routed through the pulleys.

You’ll need to replant it in exactly the same way. 3. If there are any damaged or frayed parts of the belt, you’ll need to replace them before continuing. Otherwise, thread the belt through the pulleys, making sure that all of the grooves line up correctly.

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4 Once you’ve got the belt threaded through all of the pulleys, give it a good tug to make sure that it’s tight enough and won’t come off again while you’re mowing. And that’s it!

How to Put Belt on John Deere Mower Deck?


Replacing Belt on John Deere 100 Series

It’s inevitable. Sooner or later, the belt on your John Deere 100 series mower is going to need to be replaced. Here are some tips on how to do just that:

First, of course, you’ll need to purchase a replacement belt. Be sure to get the right size for your mower model – if you’re not sure, consult your owner’s manual or ask at your local John Deere dealer. Next, remove the old belt from the mower deck.

You’ll likely need a socket wrench to loosen and remove the bolts that hold the deck in place. With the deck removed, it will be easier to access and replace the belt. Thread the new belt around all of the pulleys according to their proper routing (again, consult your owner’s manual).

Make sure that the belt is tight but not too tight – you should be able to deflect it about an inch with moderate pressure from your finger. Once everything is in place and tightened down, reattach the deck and give it a test run!


If you own a John Deere mower, you may need to put a belt on the deck from time to time. This is a relatively easy process that anyone can do with a little bit of know-how. First, locate the tensioning arm and loosen the nut that secures it.

Next, slide the old belt off of the pulleys and dispose of it properly. To install the new belt, feed it through the pulleys starting at the bottom and working your way up. Once the belt is in place, tighten down the tensioning arm and make sure everything is secure.

With a new belt in place, your John Deere mower will be ready to tackle any lawn.