How To Lubricate A Horizon Treadmill

Learning how to lubricate a Horizon treadmill is a key part of keeping your machine running smoothly for years. Your Horizon treadmill likely requires a proprietary lubrication kit available directly from the manufacturer for best results. This simple maintenance task prevents belt wear, reduces motor strain, and ensures a quiet, consistent workout.

Neglecting this can lead to costly repairs. This guide will walk you through the entire process, from identifying your treadmill model to the final adjustment check.

The core process of lubricating your treadmill involves lifting the running belt and applying lubricant to the deck underneath. It sounds straightforward, but doing it correctly requires attention to detail. Using the wrong lubricant or applying it improperly can cause more harm than good.

First, you need to gather the right supplies. Having everything on hand before you start makes the job quicker and easier.

Gather The Necessary Tools And Lubricant

You cannot use just any household oil or silicone spray. Treadmills require a specific, high-viscosity silicone-based lubricant. For Horizon treadmills, this is especially important.

Horizon Treadmill Lubricant: The safest choice is to purchase the official Horizon Treadmill Lubricant kit. This ensures perfect compatibility with your belt and deck materials.
Allen Wrench Set: Most Horizon treadmills use Allen/hex keys to adjust the belt tension. The required size is often 5mm or 6mm, but a set is handy.
Clean Cloth or Paper Towels: For wiping away any old lubricant or debris.
Vacuum Cleaner with Brush Attachment (Optional but Recommended): To clean dust and dirt from around the motor cover and deck area before you begin.

If you cannot get the official lubricant, ensure any substitute is 100% silicone and labeled specifically for treadmill use. Never use WD-40, household oils, or spray silicone.

Prepare Your Treadmill For Lubrication

Safety is the first priority. Always unplug the treadmill from the electrical outlet before performing any maintenance. This prevents any accidental starts.

Unplug the Treadmill: Disconnect the power cord from the wall outlet.
Center the Running Belt: The belt should be centered on the deck. If it has drifted, you may need to adjust it later, but check its position now.
Clean the Area: Use your vacuum’s brush attachment to remove any dust, hair, or debris from around the sides of the belt and near the motor cover. This stops grit from getting trapped under the belt during lubrication.
Loosen the Running Belt: You need slack to lift the belt. Locate the two rear roller adjustment bolts at the back end of the treadmill. Using your Allen wrench, turn both bolts counter-clockwise (usually a quarter to half turn). Do not over-loosen.

How To Check Belt Tension

A properly tensioned belt should allow you to lift it about 2-3 inches off the deck at the midpoint. If it’s too tight, you won’t be able to lift it to apply lubricant. If it’s too loose, it will slip during use. The adjustment bolts control this tension.

Apply The Lubricant Correctly

This is the most critical step. Applying too much or too little lubricant can both cause problems. The goal is a thin, even layer.

Lift the Running Belt: Stand at the side of the treadmill. Lift the running belt from the middle, creating a gap between the belt and the deck.
Apply the Lubricant: Insert the lubricant tube or bottle nozzle under the belt. Apply a thin bead of lubricant down the center of the deck. Start about 6 inches from the front roller and go to about 6 inches from the rear roller. You do not need to lubricate the entire deck length.
Spread the Lubricant: Gently lower the belt. Then, to spread the lubricant evenly, plug the treadmill back in (keep safety key removed). Stand on the side rails, start the belt at a very slow speed (1-2 mph), and let it run for 60-90 seconds. The motion will distribute the silicone under the belt.
Wipe Away Excess: After spreading, unplug the treadmill again. Use a clean cloth to wipe any excess lubricant that may have seeped out from the edges.

Re-Tension And Center The Running Belt

After lubrication, you must restore the correct belt tension and alignment. A misaligned belt can wear quickly and feel uneven underfoot.

Check the Alignment: With the treadmill still unplugged, visually inspect the belt. It should have an equal amount of overhang on both the left and right sides of the deck.
Adjust if Necessary: If the belt is pulled to one side, you need to adjust it. The adjustment bolts work together. For example, if the belt is too far to the right, slightly tighten the left rear bolt (clockwise turn) OR slightly loosen the right rear bolt (counter-clockwise). Make tiny adjustments of an eighth of a turn at a time.
Set Final Tension: Tighten both rear adjustment bolts clockwise evenly until the belt has the proper 2-3 inch lift in the middle. Avoid overtightening, as this puts stress on the motor and rollers.
Final Test Run: Plug the treadmill back in, insert the safety key, and stand on the side rails. Run the belt at a moderate speed (3-4 mph) for a minute. Listen for smooth operation and feel for consistent movement.

How Often Should You Lubricate Your Horizon Treadmill

Frequency depends on use. A good general rule is to lubricate your Horizon treadmill every 130 miles or every 3 months, whichever comes first. If you use it daily or have multiple users, check it more often.

Signs your treadmill needs lubrication include:

A squeaking or squealing noise from the deck area.
The belt feels like it’s sticking or dragging during your run.
You notice increased friction when you try to manually move the belt with your hand.
The motor seems to be working harder than usual.

Troubleshooting Common Lubrication Issues

Sometimes, problems persist even after lubrication. Here are some common issues and their likely solutions.

The Treadmill Still Makes Noise After Lubrication

If squeaking continues, the noise might not be from the deck. Check the roller bearings or the motor drive belt. Also, ensure you used enough lubricant and that it was spread evenly. Dirt under the belt can also cause noise, so a thorough cleaning first is essential.

The Running Belt Slips Or Hesitates

This usually indicates the belt is too loose. Check the tension and tighten the rear adjustment bolts a small amount equally. Also, ensure the walking belt is not over-lubricated, as a greasy surface can sometimes cause traction loss.

You Applied The Wrong Type Of Lubricant

If you accidentally used a non-silicone oil, you need to clean it off. This involves loosening the belt, wiping the deck and the underside of the belt thoroughly with a mild soap solution and a cloth, letting it dry completely, and then applying the correct silicone lubricant. Incorrect lubricants can degrade the belt material.

Maintaining Your Treadmill Between Lubrications

Regular care extends the time between major lubrications and keeps your treadmill in top shape.

Clean After Each Use: Wipe down the console, handrails, and deck surface with a damp cloth to remove sweat and dust.
Vacuum Regularly: Monthly, vacuum around the motor cover and in the areas where the belt meets the deck to prevent dust buildup.
Check for Wear: Periodically inspect the running belt for signs of fraying or cracking and the deck for visible wear spots.
Avoid Moisture: Never spray cleaners directly onto the treadmill. Always apply them to a cloth first to prevent liquid from seeping into the motor or electronics.

FAQ: Horizon Treadmill Lubrication

Can I use silicone spray from a hardware store on my Horizon treadmill?

It is not recommended. Many hardware store silicone sprays have additives or lower viscosity that can attract dirt and may not provide the long-lasting protection the treadmill’s high-friction environment requires. The manufacturer’s lubricant is formulated for this specific purpose.

How do I know if my Horizon treadmill is self-lubricating?

Most Horizon treadmills are not self-lubricating. Some higher-end models may have a deck that requires less frequent lubrication, but you should always consult your owner’s manual. If you manual has instructions for manual lubrication, your model requires it.

What happens if I never lubricate my treadmill?

Failing to lubricate will cause excessive friction. This leads to premature wear on the expensive running belt and deck, forces the motor to work harder (potentially burning it out), and creates a slower, noisier, and less enjoyable workout experience. It will significantly shorten your treadmill’s lifespan.

Where can I buy genuine Horizon treadmill lubricant?

The best sources are the Horizon Fitness website, their authorized parts dealers, or major online retailers like Amazon. Ensure the product is labeled as official Horizon Treadmill Lubricant to guarantee compatibility. Always check you have the right kit for your model.

Is it normal for the belt to feel different after lubrication?

Yes, it is normal for the belt to feel slightly smoother and quieter immediately after lubrication. If it feels slippery or like it’s lagging, the belt tension may be too loose and need a minor adjustment. A quick test run will help you identify any issues.

Following these steps for how to lubricate a Horizon treadmill will protect your investment. Regular maintenance is simple, cost-effective, and ensures every run is as smooth as the first. Always refer to your specific model’s owner manual for any unique instructions, and when in doubt, contact Horizon Fitness customer support for guidance. Taking care of your equipment means it will take care of your fitness goals for a long time to come.