How to Clean a Makita Vacuum Filter to Restore Suction

Short answer: to clean a Makita vacuum filter, switch the vacuum off, remove the battery, empty the tank, take out the filter and tap off loose dust, rinse it only if it is washable, dry it fully, then refit. Lost suction is nearly always a clogged filter rather than a failing motor, so this is the first thing to check.

Before you start

Always remove the 18V LXT battery before opening the unit — it stops any accidental start and is basic good practice on the Makita DVC750LZ. Empty the tank first (up to 7.5 litres of dry debris) so you are not working around a full bin. Do this outdoors or over a bag; fine plaster and wood dust travel.

Step by step

1. Power off and unclip the battery. Confirm the unit is dead before opening the head.
2. Empty the tank and knock out loose debris.
3. Remove the filter following the head-release on your model. Note which way it seats so it goes back correctly.
4. Tap, do not bash. Gently tap the filter against a bin edge to shed the bulk of the dust. A soft brush helps on pleats.
5. Rinse only if washable. If your filter is water-safe, rinse with clean cold water from the clean side outwards. Do not scrub the media and do not use detergent.
6. Dry completely. Let it air-dry fully before refitting — a damp HEPA element can clog fast and strain the motor.
7. Refit and test on Low, then High.

Wet pickup needs different filter handling

This is where owners go wrong. Before vacuuming liquid you generally remove the dry filter for wet pickup, then clean and dry the tank afterwards so residue does not turn sour or blind the filter on the next dry job. Keep within the 4.5 litre wet limit. If you switch between wet and dry a lot, a printable routine keeps a shared machine consistent across a team.

When cleaning is not enough

Filters are consumables. If suction stays weak after a proper clean and dry, or the media is torn, holed or permanently greyed, replace it rather than nursing it — a compromised L-Class filter no longer controls fine dust. Match the correct Makita replacement element for the DVC750LZ. Good filter discipline is also what keeps the machine feeling worth it over years of use; if you are still deciding, see are Makita vacuums worth the money.

Frequently Asked Questions

How do I clean a Makita vacuum filter to restore suction?

Switch off, remove the battery, empty the tank, take out the filter and tap off loose dust. If it is washable, rinse with clean cold water and dry it fully before refitting. Most cases of weak suction are a loaded filter rather than a motor fault.

Can I wash the DVC750LZ filter with water?

Only if your filter is the washable type. Rinse gently with cold water from the clean side, avoid detergent and scrubbing, and let it dry completely before refitting. A damp filter clogs quickly and can strain the motor.

Do I remove the filter for wet pickup?

Yes. Before vacuuming liquid you generally remove the dry filter, keep within the 4.5 litre wet limit, then clean and dry the tank afterwards so residue does not affect the next dry job.

How often should I clean the filter?

On heavy dust jobs such as plaster, check and tap out the filter daily; lighter use may only need a weekly clean. Replace the filter if it is torn or stays clogged after cleaning.