How to Clean a DEWALT DWS780 Miter Saw and Dust Duct

Step-by-step instructions

Step 1: Check the recall and unplug before approaching the saw

Read the recall notice above and resolve an affected or uncertain saw through DEWALT before further use. Release the trigger, wait for the blade to stop, and unplug the power cord. Keep the plug under your control so another person cannot reconnect it during cleaning. Raise the head fully as directed by the matching manual, keeping hands away from the blade teeth. Do not treat the trigger being off, a dark worklight, or a stationary blade as electrical isolation.

Step 2: Remove loose chips from the table and base

With the saw stable and unpowered, collect loose sawdust and chips from accessible surfaces using a soft brush and appropriate dust collection. Include areas around and beneath the base and rotary table without tipping an unsecured heavy saw. Do not sweep your fingers across blade teeth or reach blindly behind a guard. Keep fasteners and small tools clear of the cutting area. A clean tabletop matters, but debris hidden under the turntable can still interfere with normal movement.

Step 3: Empty the dust bag and inspect the collection path

Detach the dust bag or extraction connection by its intended fitting. Empty the bag through its zipper into an appropriate waste container without creating an unnecessary dust cloud, then close it securely. Check the inlet and accessible hose for a blockage. Treat collection performance separately from motor operation: a full bag or plugged hose does not justify removing protective guards. If the bag is torn or its connection damaged, use the correct replacement instead of taping over a poor fit.

Step 4: Clear the dust duct and ventilation openings carefully

The DEWALT-authored manual reproduced by Manuals+ describes clearing the dust duct with the saw unplugged and head fully raised, using low-pressure air or its specified dowel method. For the air method, wear approved eye and dust protection and keep bystanders out of the dust path. Clear accessible vent buildup with dry air as directed. Do not insert metal tools into the motor housing or use powerful air jets to force a jam through a guard.

Step 5: Protect the guard when wiping exterior surfaces

DEWALT warns against cleaners and lubricants, especially sprays or aerosols, near the polycarbonate guard. Keep routine dust removal gentle and dry there. For permitted nonmetallic exterior wiping, use a cloth only lightly dampened with water and mild soap, avoiding any liquid entry. Never immerse the saw or hose it down. If wood is wedged between the blade and a guard, stop: the manual routes that problem through the blade-removal procedure. Have a competent operator or service center handle it rather than prying around sharp teeth.

Step 6: Clean the XPS worklight lens without solvent

Remove accessible sawdust from the worklight lens with a clean cotton swab while the saw remains unplugged. Work lightly; do not scrape the lens or spray a glass cleaner into the light assembly. Dust can obscure the blade-shadow indicator, but a damaged light is not a cleaning problem. Blade pitch removal is a separate task performed with the blade removed under the proper procedure. Do not flood an installed blade with resin remover where it can reach the guard or electrical parts.

Step 7: Inspect before returning the saw to service

Check that the guards and dust duct operate correctly, the collection connection is secure, and no tools remain on the table. Wipe away any exterior moisture and inspect the cord and plug. The cited manual requires no additional lubrication, so do not oil the mechanism indiscriminately. Keep the saw unplugged if a guard binds, a part is cracked, the recall status is unresolved, or electrical damage is present. Resume normal operation only after the saw is complete and the manufacturer's pre-use checks pass.