Genie M-4500 Owner's Manual
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Contents
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11 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 headerbracket. Insert header clevis pin ( 1/4” dia.) through railend-stop and header bracket, then attach cotter ring toend of pin. (See Fig. 19A) Once rail is attached to header bracket, support openerpowerhead on ladder, or use the assistance of anotherperson to support opener powerhead high enough sodoor can open without hitting the rail.A. SECTIONAL DOORS AND ONE-PIECEDOORS WITH TRACK: Open garage door to fully opened position, and place a2x4 laid flat between the door and the rail. See Fig.20. The 2x4 provides an easy method of ensuring thecorrect mounting height of the opener.B. ONE-PIECE DOORS WITHOUT TRACK: Disconnect trolley by pulling down on emergency releaseknob. 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. DOORSHOULD NOT BE TILTED TOWARD THE BACK OF GARAGE. Position opener so that top of opener head is level withtop of opened door. To check for correct mounting height, temporarily positioncurved door arm as if connecting to door bracket. See Fig.21. The long side of the arm should be parallel to thefloor 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 tomount the opener to ceiling.8-6. POSITION OPENER FOR MOUNTING8-5. ATTACH RAIL TO HEADER BRACKETHeader BracketRail End-StopCotter Ring1/4 x 3-1/4”Clevis PinRailFig. 19Fig. 19AStepladder2x4 Laid FlatDoorStepladderDoorFig. 20Fig. 21Opener Box |
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