Clarke Floor Sander 07012A 2012 Drum Belt Replacement

Pull on the dust bag to remove it from the dust tube.

Pull up on the dust tube to remove it from the sander.

Use a long Phillips #2 screwdriver to remove the two screws securing the belt guard:

One 1/4-20 x 18 mm screw

One 1/4-20 x 30 mm screw

Remove the belt guard.

Carefully tilt the floor sander onto its side, exposing the sanding drum and the dust shoe plate.

Use a Phillips #2 screwdriver to remove the four screws on the underside of the sander securing the dust shoe plate.

Remove the dust shoe plate.

For the purposes of this repair, there is no need to fully remove any of the nuts in the following steps. Just loosen them enough to allow the motor to slide back and forth.

Use a socket wrench with an extension and a deep 1/2" socket to loosen the two nuts behind the dust shoe plate.

Use a 1/2" wrench to loosen the other two nuts securing the motor.

Slide the motor along its mounting slots toward the back of the sander until the fan belt is detensioned.

Remove the fan belt.

Pull the grip lever at the top of the handle to lift the sanding drum off of the floor, so that it can spin freely.

To remove the drum belt, pull it away from the sander while hand turning the belt on the drum pulley in a counter-clockwise direction. The belt will come off after a few rotations.

First, loop the drum belt around the wider half of the motor pulley (the side closest to the motor).

Then place the edge of the other end of the belt around the drum pulley, and manually drive the belt and pulleys in a counter-clockwise direction until the belt works itself back into alignment with the pulleys.