User manual LIFT-MASTER 65 7001

[. . . ] WARNING APPLICATION This modification is available to models J and DJ operators. [. . . ] Refer to installation on reverse side. FIGURE 1 CENTER MOUNT MODIFICATION NOTE: View shown as if looking through wall. Door Shaft Shaft Couplings (not provided) When performing this modification the door should be closed and no tension on the doorshaft 1 I N S TA L L AT I O N I N S T R U C T I O N S 1. Remove (2) frame connecting bracket bolts, be sure to leave bracket in same position (Figure 2). Install (2) 3/8-16 x 1" hex head bolts and (2) 3/8-16 serrated flange nuts to connect bracket, frame and connecting bracket (be sure the connecting bracket stays in the same position it was in when the bolts were removed in step one). Install (2) 3/8-16 x 1" hex head bolts, (2) flat washers and (2) 3/8-16 serrated flange nuts through the slotted holes in the bracket assembly. Install chain, pivot bracket assembly to tighten chain (allow some slack) and tighten bolts. Install operator into door shaft using shaft couplers (not provided) and provide suitable back hangs for the power head. [. . . ] (Typical on Both Sides) 01-12497B © 2005, The Chamberlain Group, Inc. [. . . ]