If your mower starts creaking, squealing, and cutting poorly, it's time to replace the components. Rubber belts are subject to increased wear in most models. It's a good idea to stock up on them in advance so you can quickly reattach them and resume mowing. The replacement process can be daunting, but following the instructions in this article will ensure the desired results.

Preparatory Work
Park the mower on a level surface with the parking brake engaged. Disconnect the spark plug from the wire to prevent the motor from accidentally igniting. It's best to remove the ignition key to completely eliminate any unexpected consequences. You will also need:

Wooden blocks;
Work gloves;
Screwdriver.
To remove the deck, you'll need a wooden block; place it under the mower deck on both sides. The deck height is adjustable; you'll need the lowest position. This will ensure the deck is securely positioned on a pair of wooden blocks.

Replacement Process
Now the levers need to be disconnected from the deck, after which the rear element of the traction lever is disengaged. The drive belt is removed—this is the final step in disengaging the tractor from the deck. Carefully remove the wooden blocks. Remember not to allow the support wheels to touch the ground. Roll the deck out from under the lawn mower and store it in a safe place, out of the reach of unauthorized persons.

The belts are hidden under two covers, secured with mounting screws. Remove the screws and the belt covers from the deck. Loosen the pulleys, then gently pull the worn belt out of the mower. Replace the belt and rotate the new element around the pulleys. Next, proceed as follows:

Begin reassembly.
Screw the removed covers back into place.
Re-tighten the pulleys (this will secure the rubber belt). The manufacturer recommends maintaining a 10-meter distance when tightening the pulleys. Don't forget to adjust the deck height by moving the lever to the transport position. The deck is mounted on the mower. Remember that the lever should lower the deck, and the wooden blocks are placed under the deck surface. Next, install the pins and washers, and reattach the deck to the levers. The rear traction arm is reinstalled on the deck.

It's a good idea to take a photo of the assembly beforehand to avoid confusion. For your own safety, wear protective gloves to prevent potential cuts and scratches. The mower interior contains many sharp corners and edges. As you can see, changing the drive belt on a mower is much easier than you might think.

The important topic of checking belt tension after installation is missing. This is a critical step, as incorrect tension leads to either slippage or accelerated wear.
The claim that replacing a drive belt is much easier than it might seem seems overly general. In practice, the difficulty varies greatly depending on the specific model.

You can select belts for your model in advance to save time during the season. Specialized collections like https://udcparts.com/collections/mower-belt offer a variety of drive belt options for typical lawn mower models. They also offer size and compatibility comparisons, especially if your equipment is older and requires precise specifications.