Master Lock BAO0415 - User Manual

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Instructions for installation of knob or lever locksets

Backset is the distance from the door edge to the center of the hole on the door face. Master Lock door locks are supplied

with an adjustable latch which can fit 2-3/8”

(60mm) or 2-3/4” (70mm) backset.

Follow steps below to change backset.

To convert to 2-3/4" backset

Backset

a. This latch is for 2-3/8" (60mm) backset.

b.Keep spindle cam in correct position as illustrated. Pull spindle cam all the way to the right.

c. Your latch is now set for 2-3/4" (70mm) backset.To reset 2-3/8" backset,push spindle all the way back to the left.

Mark door with template Drill holes

Measure one half of door thickness from doorstop

and mark for the vertical centerline of strike. Drill

1" hole, 1/2" deep at the intersection of the

horizontal and vertical centerlines.

Close door to mark horizontal

centerline of strike.

Insert latch in

hole, mark

outline of face

plate and

chisel

11/64" (4mm) deep.

Select 2-3/8" or 2-3/4" (60mm or 70mm)

backset as desired and mark center of hole

on door face.

Drill 2-1/8" (54mm) hole on door face from both sides

to avoid wood splitting. Drill 1" (25.4mm) hole for latch.

Install latch

" 2

Attach the latch face that matches the mortise in the edge of your door

Fin

Floating Sleeve

Round Face Plate

Locate floating sleeve and round

face plate and proceed.

To change latch faces:

1. Use a flat screwdriver to separate the face plate.

2. Snap selected latch face onto backplate.

For drive in installation:

Push latchbolt to the end and hold. Align the round face

plate opening with the fin on the latch. Push to the end

and rotate the round face plate counter-clockwise. After

assembly,

release latchbolt to fully extend. Move the

floating sleeve toward the round face plate until the

edge fits into the ring opening of the round face plate.

Back Plate

Face Plate

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Summary

Backset Adjustment

Changing Backset Mechanism

Adjusts the latch mechanism for 2-3/8" or 2-3/4" backset.

Latch Face Attachment

Replacing Latch Faces

Separates and snaps selected latch face onto backplate.

Drive-In Latch Installation

Instructions for installing a drive-in latch with a round face plate.

Door Preparation for Lock

Marking Door Holes

Uses template to mark backset and hole center on door face.

Drilling Door Holes

Drills 2-1/8" face hole and 1" latch hole.

Latch Installation

Strike Plate Installation

Installing the Strike Plate

Matches screw holes on strike with jamb centerlines, marks and chisels.

Knob and Lever Installation

Install Outside Knob or Lever

Inserts spindle through latch and presses flush against the door.

Install Inside Knob or Lever

Installs inside knob or lever and tightens screws until lock is firm.