Genie M-4700, M-4500 owner manual Attach Rail to Header Bracket, Position Opener for Mounting

8-5. ATTACH RAIL TO HEADER BRACKET

■Support opener head slightly off the floor.

■Lift the opposite end of the rail up to the header bracket.

■Position rail end-stop within the openings in the header bracket. Insert header clevis pin ( 1/4” dia.) through rail end-stop and header bracket, then attach cotter ring to end of pin. (See Fig. 19A)

8-6. POSITION OPENER FOR MOUNTING

■Once rail is attached to header bracket, support opener powerhead on ladder, or use the assistance of another person to support opener powerhead high enough so door can open without hitting the rail.

A. SECTIONAL DOORS AND ONE-PIECE DOORS WITH TRACK:

■Open garage door to fully opened position, and place a 2x4 laid flat between the door and the rail. See Fig.20.

■The 2x4 provides an easy method of ensuring the correct mounting height of the opener.

B. ONE-PIECE DOORS WITHOUT TRACK:

■Disconnect trolley by pulling down on emergency release knob. Move trolley toward opener head.

■Open door all the way so that it is parallel to the floor, or slightly tilted toward the front of the garage. DOOR SHOULD NOT BE TILTED TOWARD THE BACK OF GARAGE.

■Position opener so that top of opener head is level with top of opened door.

■To check for correct mounting height, temporarily position curved door arm as if connecting to door bracket. See Fig. 21. The long side of the arm should be parallel to the floor when door is fully opened. Raise or lower power- head so that arm will be parallel to floor.

■Temporarily support head at this height, and prepare to mount the opener to ceiling.

Fig. 20

Door

2x4 Laid Flat

Stepladder

Fig. 21

Door

Stepladder

Fig. 19

Fig. 19A	Header Bracket
	Rail End-Stop
Cotter Ring

1/4 x 3-1/4” Clevis Pin

Rail

Opener Box

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