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U.S. Patent 7,418,8000
4.
LEVER ARM ADJUSTMENT
4.1.
Attaching the Adjustment Arm to the Shoe
4.1.1.
Loosen nut on adjustment arm.
4.1.2.
Loosen the set screws in the clutch arm hub.
4.1.3.
Adjust length of adjustment arm so when door is shut and arm is engaged in shoe, the clutch arm
makes a 90-degree angle to wall.
4.1.4.
Bolt the adjustment arm in the center hole of the shoe bracket.
4.1.5.
Tighten the adjustment arm nut and the set screws in the clutch arm hub.
4.1.6.
Verify doughnut magnet is mounted to the side of clutch arm that faces the velcroed sensor 1/8” from
the clutch arm hub, centered on the arm. This triggers the motor to shut off when in operation.
