How To Fix Bowflex Dumbbells

If you’re having trouble with your adjustable dumbbells, you’re not alone. Knowing how to fix Bowflex dumbbells can save you a costly replacement or repair bill. These space-saving tools are great until they start sticking, clicking, or not selecting weight properly. Let’s walk through the common problems and their solutions.

Most issues fall into a few main categories. The fixes range from simple cleaning to more involved part replacements. Always start with the easiest solution first.

Common Problems and Quick Checks

Before you take anything apart, do these quick checks. They solve many issues right away.

Dumbbell won’t select weight: Make sure you’re turning the dial to a valid number and that it clicks into place. The dial should not be between numbers.
Weights feel loose or rattle: This often means the selector dial isn’t fully engaged. Lift the dumbbell and turn the dial back and forth slightly to seat it.
Sticking or hard-to-turn dial: Dirt and dust are the usual culprits. A simple clean might be all you need.

Gathering Your Tools

You won’t need many tools for most fixes. Here’s what to have ready:

Clean cloths or paper towels
Mild dish soap
Silicone-based lubricant (like WD-40 Specialist Silicone)
A small brush (old toothbrush works)
Rubber mallet (for gentle tapping)
Phillips head screwdriver

Why Silicone Lubricant?

It’s important to use a silicone-based spray. Other lubricants like WD-40 (the standard kind) or grease can attract more dust and gunk over time. Silicone dries clean and won’t damage the plastic parts.

Step-by-Step Cleaning and Maintenance

Regular cleaning prevents most problems. Do this every few months if you use the dumbbells often.

Wipe Down: Use a dry cloth to remove any loose dust from the dials and the weight plates.
Clean the Dials: Dampen a cloth with a little soapy water. Wipe the selector dial and the number window carefully. Avoid getting water inside the mechanism.
Lubricate: Spray a small amount of silicone lubricant into the seam around the base of the selector dial. Turn the dial several times to work the lubricant in.
Dry and Test: Wipe away any excess lubricant. Test the dial to see if it turns more smoothly.

Fixing a Stuck or Broken Selector Pin

This is a very common issue. The pins inside that lock the weights can get jammed or break.

Identify the Problem: Look into the holes where the pins go. Do you see a pin stuck down? Or is one missing/broken?
Gentle Persuasion: For a stuck pin, try spraying silicone lubricant around it. Then, use a small tool like a paperclip to gently pry it upward while turning the dial.
Check for Obstructions: Sometimes a small piece of broken plastic or metal can block the pin. Use a flashlight to look inside and a brush to clean it out.

When a Pin is Broken

If a pin is broken, you’ll likely need a replacement part. You can contact Bowflex customer service for this. They sell repair kits for many models. Replacing it involves opening the dumbbell casing, which requires care.

Dealing with a Misaligned Dial

If the numbers don’t line up in the window, the dial might be misaligned on its shaft.

Turn the dial to the lowest setting (usually 5 or 10).
Remove the dumbbell from the stand. Look for a small screw in the center of the dial.
Loosen this screw just enough so you can adjust the dial.
Align the correct number perfectly in the center of the viewing window.
Tighten the screw back down firmly and test.

Repairing Cracks in the Housing

The plastic outer shell can crack from drops or impacts. This is a serious issue because it can effect the mechanism’s alignment.

Small Cracks: For hairline cracks, a strong epoxy plastic adhesive can sometimes seal it. Make sure the dumbbell is empty (set to the lowest weight) and clean before applying.
Large Cracks or Breaks: Unfortunately, a major break usually means you need a new housing. Contact Bowflex to see if they sell a replacement shell for your model. Gluing a major break is often not safe, as the forces involved during use are significant.

When to Contact Bowflex Support

Some problems are beyond a simple home fix. You should call or email Bowflex if:

You have a broken internal part (like a pin or spring).
The internal mechanism makes a grinding noise.
The housing is severely damaged.
One dumbbell is completely dead and non-responsive.

Have your model number and serial number ready. They’re usually on a sticker on the dumbbell or the stand. Being prepared makes the process much faster.

Preventative Care Tips

Taking good care of your dumbbells makes them last much longer. Follow these easy habits.

Always store them in their stand, not on the floor.
Avoid dropping them. Even on carpet, the impact can jar the internal parts.
Keep them in a dry place. Humidity can sometimes lead to corrosion inside.
Clean them every couple months, more often if you use them daily.
When adjusting the dial, lift the dumbbell slightly to take pressure off the pins. This reduces wear.

FAQ: Fixing Bowflex Dumbbells

Why are my Bowflex dumbbells not working?

The most common reasons are dirt in the dial mechanism, a stuck selector pin, or a misaligned dial. Start with a thorough cleaning and lubrication.

Can I fix broken Bowflex dumbbells myself?

Yes, many common issues like cleaning, lubricating, and freeing stuck pins can be done at home. For broken plastic parts or internal mechanisms, you may need a replacement kit from the manufacturer.

How do you fix Bowflex 552 dumbbells?

The process for the popular 552 model is similar to others. Clean the dials, use silicone spray on stuck pins, and ensure the dial is clicked fully into a number. The 552s have a good reputation, but they can still get gummed up with dust.

What if the weight is off on my adjustable dumbbells?

If the selected weight feels too light or heavy, a pin is probably not engaging correctly. Inspect the pin holes for obstructions. A broken pin will also cause an incorrect weight load, as some plates won’t be locked in.

Is there a warranty on Bowflex dumbbells?

Bowflex products typically come with a limited warranty, often for 2 years. Check your original paperwork. Even if your warranty is expired, their customer support can still help you order replacement parts for a fix.

Fixing your equipment can be satisfying and saves money. With a little patience and the right approach, you can often get your Bowflex dumbbells working like new again. Remember to always prioritize safety—if a repair seems unsafe or the structural integrity is compromised, it’s time to look for a professional solution or a replacement.