How to Replace the Drive Belt on a Husqvarna Zero Turn Mower

The drive belt is one of the major components of your Husqvarna mower and requires frequent checks and maintenance.

But just like any other components, drive belts are prone to wear and tear and need replacement regularly.

I am familiar with how to replace the drive belt on a Husqvarna zero-turn turn mower because I performed the task recently via the following steps:

  1. Set the parking brakes
  2. Undo the bolts
  3. Remove and replace the belt

Read on to find out how to perform these steps properly.

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Replacing Your Husqvarna Zero Turn Mower Drive Belt: Step-by-Step Guide

Step 1: Set Parking Brakes  

To remove your drive belt; first, you must not only ensure that your parking brake is on, but also that your mower itself is parked on a leveled surface with no inclination that may cause sudden movements. This is one of the most important aspects of lawnmower safety!

Step 2: Bolts

how to remove bolts on huszvarna zero turn mower

The next step is to remove the bolts from the belt shield, which is the casing in which the driving belt is enclosed. Removing the bolts should ensure the casing comes off easily.

Step 3: Belt Configuration

Once the casing comes off, you should see the drive belt and, most importantly, mentally note how it is routed and configured so that you may have a perfect guide once it’s time to replace it.

Step 4: Removing the Belt

remove the belt on a Husqvarna Zero Turn Mower

To remove the belt, you must first move the idler arm to ensure looseness and then go ahead and remove the belt by gently pushing it over the top of the housing pulleys.

Step 5: Replacing the Belt – Wrapping the Pulleys

replace the belt on a Husqvarna Zero Turn Mower

Once you’re done with the cleaning, maintenance, or total replacement of the belt, proceed to open the engine shaft again and then wrap the deck belt around the clutch pulley just as it was earlier.

Step 6: Idler Arms

idler arms on a Husqvarna Zero Turn Mower

Push in on the idler arm that was moved earlier (to ensure looseness) and once you’re done routing the belt, release the idler arm to its initial position to ensure fastening.

Step 7: Final Check

Confirm to see if your final routing configuration is the same as it was earlier. Make sure there aren’t any knots or hard twists on the belt.

Step 8: Replace Encasing

replace the casing on a Husqvarna Zero Turn Mower

Carefully replace the encasement removed earlier on the belt housing and make sure the major bolt spaces fall on the right surfaces.

Step 9: Replace Bolts

Replace and fasten the bolts on the drive shield casing.

And You’re Done. Check out this video below for a more in-depth how-to. Please note that Husqvarna has recalled certain riding lawnmower models.

How to Replace the Drive Belt on Husqvarna Zero Turn Riding Lawn mower

We hope you enjoyed our guide on how to replace the drive belt in your Husqvarna Zero Turn Mower. Feel free to leave comments below on your success and the challenges you faced. If your Husqvarna lawnmower isn’t in a repairable state or you’re just looking for a new riding mower, check out the most powerful Husqvarna zero-turn mower.


What Does a Drive Belt Do on a Lawnmower?

No matter how lawn mower is operated, they all have a belt that runs from the drive wheels to the engine. The belt is used to transfer power from the engine to the wheels, and when the belt is not tight, the mower will not move forward or backward as it should.

Why Does My Deck Belt Keep Breaking?

The most common cause of the deck belt breaking would be an idler or mandrel pulley not lined up properly or the bearings going out and making the pulley wobble, or the belt getting rubbed somewhere. Check the pullies on the deck to make sure they turn freely and are not loose and wobbling around.

What Causes a Mower Deck to Vibrate?

If the mower vibrates when you engage the cutting blades, there might be a problem with the blade drive system. Deck vibration can be caused by an unbalanced blade, worn pulley or mandrel, bad blade belt, or debris caught inside a pulley. Loose nuts or bolts on the pulleys, mandrels, or blades can also cause vibration.

Why Does My Lawnmower Keep Throwing the Belt?

A retaining bolt for the pulley has come loose, or you have bad bearings. Make sure all pulleys are still rotating smoothly. If one has bearings that have gone south, the pulley could be cocked, which will throw the belt. So, check the spindle bearings and check the tensioner pulley and the idler pulley if it has one.

How Do You Adjust a Tensioner Pulley?

Turn the adjustment bolt on the side, top, or bottom of the pulley counterclockwise with the ratchet and socket until the accessory belt is loose enough to remove. Tighten the tensioner pulley by turning the adjustment bolt clockwise with the ratchet and socket until the belt is tight.

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