Maintenance And

Servicing

Procedures not specifically explained in this manual must be performed only by a qualified technician.

To prevent serious injury

from accidental operation:

Disengage the Trigger and unplug the tool from its electrical outlet before performing any inspection, maintenance, or cleaning procedures.

To prevent serious injury from tool failure:

Do not use damaged equipment. If abnormal noise or vibration occurs, have the problem corrected before further use.

Cleaning, Maintenance, and

Lubrication

1.BEFORE EACH USE, inspect the general condition of the tool. Check for loose hardware, misalignment or binding of moving parts, cracked or broken parts, damaged electrical wiring, and any other condition that may affect its safe operation.

2.After Use, wipe external surfaces of the tool with clean cloth.

3.WARNING! If the supply cord of this power tool is damaged, it must be replaced only by a qualified service technician.

Carbon Brush Service

If the Carbon Brushes are damaged or worn, they must be replaced

by a qualified service technician.

Improper service may result in the double insulation system being compromised.

Chuck (1) Replacement

1.Disengage the Trigger and unplug the tool from its electrical outlet.

2.Open the Chuck Jaws fully.

3.Remove the Chuck Screw (44) inside the Chuck Jaws by turning it counterclockwise.

4.Switch the Direction Switch to the reverse direction. Plug the Power Cord into a suitable outlet.

5.Hold the Chuck Ring with a gloved hand and gently squeeze the trigger with your other hand.

6.The Chuck should come off in your gloved hand.

7.Install the new Chuck by reversing the above steps.

SKU 3273

For technical questions, please call 1-800-444-3353.

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Harbor Freight Tools 3273 Maintenance Servicing, Cleaning, Maintenance, Lubrication, Carbon Brush Service