Backcheck
BC
Sweep
L
S
Latch
L
S
— 6 —
5=55BC
4=54BC
3=53BC
2=52BC
6=56BC
To identify your model:
3 - 6=51
1- 4=51BF
Arm Placement in Shoe
= 8 Turns As Shipped
CLOSED
70°
10°
Spring Power Adjust
51 (BF) only
PA
Adjustment Chart
EXTERIOR
EXTERIOR
INTERIOR
INTERIOR
Regular Arm
Top Jamb
Regular Arm
Top Jamb
Regular Arm
Top Jamb
Regular Arm
Top Jamb
Parallel Arm
Parallel Arm
Parallel Arm
Parallel Arm
FULL 360°
TU
R
N
S O
F
1/
8”
PO
W
ER
A
D
JU
ST
M
EN
T
SCREW
FULL 360°
TURNS OF
1/8”
PO
WER
ADJUSTMENT SCREW
51BF
51
DOOR
TYPE
OF
INST.
*
34”
(0.85M)
36”
(0.90M)
40”
(1.00M)
44”
(1.10M)
48”
(1.20M)
1
1
2
3
3
2
2
3
4
5
5
6
9
12
2
4
6
9
11
3
5
7
10
13
3
5
7
10
13
5
7
10
14
16
NOT
RECOMMENDED
USE 51
*
18 FULL (360°) TURNS MAXIMUM AVAILABLE
MAXIMUM DOOR SIZE
Number of Turns Required
3-6
BE
Date
Code
or
or
7-1/2 % Stronger
7-1/2 % Weaker
(Use 1/8” Hex Wrench for this Adjustment)
(Use 1/8" Hex Wrench for these Adjustments)
+
-
Size
Code
Size
Code
Stronger
+
Weaker
-
Slower
-
Faster
+
Slower
-
Faster
+
Weaker
-
Stronger
+
Adjustments Page
50 Series
80-9350-2502-010 (12-09)
An ASSA ABLOY Group brand
3000 Highway 74 East • Monroe, NC 28112
Tel: (800)-438-1951 • Fax: (800)-338-0965
www.yalecommercial.com
Yale ® is a registered trademark of Yale Security Inc., an ASSA ABLOY Group company.
Copyright © 2001, 2009, Yale Security Inc., an ASSA ABLOY Group company. All rights reserved.
Reproduction in whole or in part without the express written permission of Yale Security Inc. is prohibited.
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