If the brush rolls on your Shark DuoClean vacuum have stopped spinning, but the floor-head lights are still working and you can hear or feel the motor running inside the head, you may have a broken drive belt.
This is an important distinction. If your Shark has no floor-head lights and no brush-roll movement, you're more likely to be dealing with an electrical supply problem. But if the floor head is receiving power and its motor is running while the rollers remain stationary, it's worth checking the belt.
In this guide I'll show you how to dismantle a Shark DuoClean floor head, remove a broken belt and fit its replacement.
The vacuum demonstrated in my video is a Shark AZ950. Other Shark AZ and AX models can be very similar, although Shark has produced many different floor-head designs, so screw positions, belt types and internal components can vary between models.
How Do I Know If My Shark DuoClean Belt Has Broken?
Before taking the floor head apart, pay attention to what the vacuum is doing.
A broken belt becomes a likely cause when:
- The floor-head lights still illuminate.
- The brush rolls aren't spinning.
- You can hear or feel the brush-roll motor running inside the floor head.
- The rollers themselves aren't obviously jammed with hair or debris.
If the lights aren't working either, don't automatically buy a belt. That combination of symptoms can indicate that electrical power isn't reaching the floor head at all.
Does Every Shark DuoClean Use the Same Belt?
No. This is very important. Shark has used different belts across its large range of vacuum cleaners and floor heads.
Some use grooved belts, others use toothed belts, and dimensions can differ even when two floor heads look similar from the outside.
One popular size is the EPH205 belt, which is used on a number of Shark models including certain HV390UKT, NV801UKT, AZ910UKT and AZ950UKT machines.
You can find our Shark EPH205 replacement belt here.
Please check your existing belt and model compatibility before ordering. The EPH205 is a popular Shark belt size, but it does not fit every Shark or every DuoClean floor head.
What Tools Do You Need?
The exact screws depend on your Shark model. On the floor head demonstrated here, you'll need:
- A coin for the sole-plate fasteners
- Torx T20 screwdriver
- Torx T10 screwdriver
- Phillips screwdriver
Before beginning, disconnect a corded vacuum from the mains or remove the battery from a cordless machine.
1. Remove the Shark DuoClean Sole Plate
Start by removing the soft front roller where applicable.
Use a coin to turn the plastic fasteners securing the sole plate. Once released, lift the sole plate away from the floor head.
This exposes the screws required to separate the main floor-head casing.
2. Remove the Floor-Head Screws
On the Shark AZ950 demonstrated in the video, there are several T20 Torx screws around the underside of the floor head, including one that's relatively easy to miss near the corner.
There are then smaller T10 Torx screws around the front section.
If you're working on another Shark model, don't assume the screws will be in exactly the same positions. Shark has produced many different versions of its DuoClean floor heads.
Don't Force the Shark Floor-Head Cover
Once all the correct screws have been removed, the casing should separate without excessive force.
If you're pulling hard enough that it feels as though the plastic is about to break, stop and look for another screw. There's a good chance you've missed one.
3. Remove the Clear Brush-Roll Section
With the outer cover removed, you'll find further screws securing the clear front section containing the main brush roll.
Remove these screws and carefully lift the section away.
On the model shown, there's also a small electrical connector for the floor-head lights. Disconnect this carefully rather than pulling on the wires.
You should now be able to access the belt and brush-roll drive system.
4. Remove the Broken Shark Belt
If the belt has snapped, remove the remaining pieces from inside the floor head.
Before immediately fitting a replacement, take a moment to inspect the brush roll and motor drive.
The brush roll should rotate freely. If it's extremely stiff or seized, investigate that problem first because excessive resistance could potentially have contributed to the belt failing.
5. Loosen the Brush-Roll Motor
On this floor-head design, there are two screws securing the brush-roll motor.
Loosen these screws without completely removing them. This gives the motor enough movement to make installing the replacement belt considerably easier.
6. Fit the New Shark DuoClean Belt
Fit the correct replacement belt around the motor drive first.
Then begin positioning the other end of the belt around the brush-roll pulley.
Slowly rotate the brush roll while guiding the belt into position. As you continue rotating it, the belt should gradually work its way fully onto the pulley.
Once correctly seated, tighten the motor screws again.
Turn the brush roll by hand and make sure everything moves freely and the belt remains correctly positioned.
7. Reassemble the Shark Floor Head
Before replacing the covers, make sure any seals around the floor head are correctly seated.
Also check that all electrical wires are sitting back inside their proper channels. It's very easy to trap a wire between two pieces of plastic when reassembling the head.
Reconnect the floor-head light connector and refit the clear brush-roll section.
The casing should then fit back together easily.
If you have an unexplained gap between the two halves of the casing, don't tighten the screws in an attempt to pull it together. Take it apart again and check that a wire, seal or other component hasn't become trapped.
8. Refit the Sole Plate and Soft Roller
Replace all the screws in their correct positions and refit the sole plate, securing the plastic fasteners with a coin.
Finally, reinstall the front soft roller where fitted. Make sure the geared end is correctly engaged before clipping it into position.
Once everything is securely reassembled, reconnect the vacuum's power or battery and test the floor head.
Why Did My Shark Vacuum Belt Snap?
Although a belt can simply fail with age and use, it's worth checking the rest of the brush-roll mechanism before fitting a replacement.
If the main brush roll has become stiff, jammed or difficult to rotate, the additional load placed on the belt can cause problems.
Remove wrapped hair, thread and debris and make sure the brush roll can move properly before completing the repair.
Shark Brush Not Spinning? Check the Symptoms Before Buying a Belt
A Shark brush bar that doesn't spin doesn't automatically mean the belt has broken.
If your floor-head lights are still working and you can hear the motor running, checking the belt makes sense.
If you've lost the lights and the brush-roll movement at the same time, investigate the electrical connections, wand and floor-head wiring instead.
And remember that Shark belts aren't universal. If your machine uses the common EPH205 size, you can find our Shark EPH205 replacement belt here, but always confirm compatibility with your particular Shark model before ordering.