Numerous hotels and homes depend on Kirby vacuums to do their jobs. Today’s Kirbys, which are renowned for their dependability and weight, have the same upright design as the business’s first electric models, which were created in the 1920s and 1930s. There isn’t much you can do if your Kirby’s motor is having issues because the steel-encased machine cannot be serviced by the user, but there are plenty of other places to check if it suddenly stops picking up dirt.
About Kirby Vacuum Cleaners

With a variety of feature-rich vacuum cleaner models to suit each individual’s specific needs, Kirby has been in business for more than 100 years and never fails to astound their customers.
Since Kirby’s has an online presence and authorized dealership stores all over the United Kingdom, their products are simple to find.
How to Fix Kirby Vacuum Cleaner is Not Sucking
Check the Toe-touch Height Contro
Check the toe-touch height control on the left side of the tank behind the “power nozzle” — the broad front end of the upright. When you push it across the floor, it should make rumbling noises. Step on it to raise it, then tap it gently until you hear a change in sound, which means the brush is beating the carpet to extract dirt.
Turn the Machine Over
If the drive belt is engaged, turn the machine over to check. The figure-eight twist should be snug between the brush and motor shaft. Reattach a disengaged drive belt or replace a broken one.
Take the Power Nozzle Off
By removing the power nozzle from the engine housing, you can inspect the drive belt, motor shaft, and brush. To avoid slipping and burning, replace worn belts. Examine the brush and motor shaft. Lint, string, or hair accumulation around the brush’s center or the shaft will cause the fan belt to slip, abrade, and wear, which will reduce the amount of debris the machine can pick up. Scissor the twisted fibers and remove them.
Check the Brush Bristles for Wear
When the bristles are too short, you won’t be able to lower the power nozzle head far enough to make up for it. If the bristles aren’t long enough to “beat” the carpet, less dirt will rise up.
Unclog Obstructions in Hoses
Using a screwdriver or your fingers, clear clogs in hoses or attachments. Additional areas to check for hair, string, or fiber tangles are the intake above the brushes in the power nozzle and the turn the exhaust makes into the Mini Em-Tor, which is made to catch large objects.

Look at the Dirt Bag
The dirt-collecting capacity of Kirby bags is predetermined. The bag is prominently marked with the level. Above that point, the machine loses suction and begins to leave more dirt behind than it collects. Despite being fairly expensive, the bags should be changed frequently for the best suction and the advantages of the high-efficiency particulate absorption materials in the bags.
Inspect Gaskets for Broken Or Worn Areas
Check gaskets for cracked or worn areas that could leak air and cause suction to decrease. Replace the large gasket that wraps around the base of the power nozzle, the rounded gasket on the engine housing, or the worn Em-Tor gasket that connects the exhaust port to the dirt bag. Any attachments should have their suction control slide closed.

Conclusion
Your Kirby vacuum may not be sucking to its full capacity for a variety of reasons. All of these explanations, along with others like a clogged air filter and a blocked blower wheel, have been covered above.
You must examine each of these parts of your vacuum one at a time to determine where the issue is.
You can quickly fix your Kirby Sentria by paying attention to the above-mentioned advice. However, you must seek out a professional for additional help if you continue to experience problems.