How to put a belt on a John Deere lawnmower

A John Deere lawnmower can help you maintain a good-looking lawn. Though this is a quality machine, you may sometimes experience some issues while using it.

This lawnmower has a pulley system and belt that are meant to transfer power to the blades and wheels. If the belt is worn out, you should consider replacing it with a new one. Start by placing the mower on a flat surface, using the parking brake, and then lowering the cutting deck to a low setting. Remove components such as the washers and spring pins before removing the cutting deck. You can now put the new belt on the mower. Once you do this, slide the cutting deck back, then check the connections before starting the engine.

Follow the steps below to put a belt on this lawnmower

If you have been using a John Deere lawnmower for a while, the belt is bound to wear out. This can make the lawnmower slow down unexpectedly. Replacing the belt of this mower is a bit technical since you need to remove some components. Start with the following.

Get the right equipment

You need to gather the right tools to make the process comfortable. Some of them include pliers, wrench, screwdrivers, gloves, and the replacement belt. Choose a belt that matches the old one in terms of shape and length to avoid problems with the belt getting lose from the pulleys.

Pack the mower

Before you start replacing the belt on the lawnmower, you should place it on a level surface. Ensure you disconnect the cables to prevent the engine from starting accidentally. Use the parking brake to prevent the mower from rolling. Once you do this, you can set the cutting deck to a low setting. This is the part that holds the blades.

Remove any attached components

Once you set the cutting deck to a low position, you should see the different pats that hold the belt, such as the spring pins and connecting rods. Use the pliers to remove the spring clip from the engagement drive cable. Remove the cable spring from the pulley bracket. Once you eliminate the washers and spring lock pins, you can now remove the existing belt.

Removing the current belt

For you to achieve this on some lawn mower models, you must remove the cutting deck. Remove the washer and spring pin from the deck bracket. This should enable you to remove the belt. You can now roll the old belt around the pulley and then slide the deck from beneath the lawnmower. Loosen the screws that attach the belt shields. Use a wrench to remove the bolts on the pulleys.

Put the new belt

Before you proceed with this, it is important to clean some of the components, such as the pulleys. You should then use the old belt pattern for you to install the new belt on the John Deere lawnmower. Use the wrench to tighten the bolts on the pulleys. You can then tighten the belt shields over the pulleys using screws. Once you have put the new belt in, you should grease it to extend the life of the drive pulleys.

Slide the cutting deck

At this point, you should now reattach the cutting deck. Take your time to fasten the drive rods correctly before sliding the cutting deck beneath this lawnmower. Confirm if the new belt is working properly and that there is no movement restriction. You should also ensure that the new belt is not touching any other components of the lawnmower.

Check all connections

Before you start the lawn mower’s engine, you should first check all the connections. Reattaching the last components should only take you a few more minutes. You should put the lift links and rear draft arm on the deck. You can then slide the drive cable below the brake rod and belt. You can then pull the drive cable forward then use a spring clip to secure it to the frame. Once you reattach the spark plug cable, you should then start the engine.

Here are some of the belts that you can get for a John Deere lawnmower

Compatible with
Call to action
Replacement drive belt
John Deere M155343
Kevlar replacement drive belt
John Deere M144044

D&D power drive belt
John Deere M144044



The drive belt of the John Deere lawnmower connects this machine’s engine with the blades and wheels. When the belt gets damaged or wears out, it needs replacements. Follow the steps we have highlighted above for you to replace it.


What makes the belt in my lawnmower keep on coming off?

The tension on the belt could be weak. Wear and tear can also make the belt stretch.

What signs can tell that the lawnmower belt is not working correctly?

Check out for signs like uneven cutting, vibrations, or noisy blades.

William Smith

William Smith has been rendering his services to a botanical garden for the better part of his adult life and has recently moved to landscaping firms. His love for gardens has been nurtured since he was a kid, evident from the various garden centers and estates that have benefited from his services. Smith is a natural when it comes to gardening and when combined with his acquired degree in landscape design, you can expect a high-quality professional job, thanks to his experience and expertise. During his free time, Smith does gardening as a hobby and runs forums where he offers expert ideas on gardening.

Leave a Comment