Chamberlain C273 User manual

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Garage Opener
Contents
Preparation......................................2-5
Assembly .......................................6-10
Installation ..................................11-28
Install the Door Control............21-22
Install the Protector System®....23-26
Power......................................27-28
Adjustments.................................29-31
Battery Backup..................................32
myQ® Smartphone Control.................33
Operation.....................................34-37
Features .......................................35
Using your Garage Door Opener.....36
Remote Control.............................36
Homelink® ...................................36
To Erase the Memory .....................37
To Open the Door Manually ...........37
Maintenance .....................................38
Troubleshooting...........................39-40
Accessories........................................41
Warranty...........................................42
Repair Parts .................................43-44
Owner’s Manual
C273
Chain Drive
Garage Door Opener
FOR RESIDENTIAL USE ONLY
PRE-PROGRAMMED REMOTE CONTROL
INCLUDED
www.chamberlain.com
www.mychamberlain.com
• Please read this manual and the enclosed safety materials carefully!
• Fasten the manual near the garage door after installation.
• The door WILL NOT CLOSE unless the Protector System®is connected
and properly aligned.
• Periodic checks of the garage door opener are required to ensure
safe operation.
• The model number label is located on the front panel of your garage
door opener.
• This garage door opener is compatible with myQ® and
Security+b2.0® accessories.
• DO NOT install on a one-piece door if using devices or features
providing unattended close. Unattended devices and features are
to be used ONLY with sectional doors.


5CHGV[ 5[ODQN CPF 5KIPCN 9QTF 4GXKGY
6JKU ICTCIG FQQT QRGPGT JCU DGGP FGUKIPGF CPF VGUVGF VQ QHHGT UCHG UGTXKEG RTQXKFGF KV KU KPUVCNNGF QRGTCVGF
OCKPVCKPGF CPF VGUVGF KP UVTKEV CEEQTFCPEG YKVJ VJG KPUVTWEVKQPU CPF YCTPKPIU EQPVCKPGF KP VJKU OCPWCN
/GEJCPKECN
'NGEVTKECN
9JGP [QW UGG VJGUG 5CHGV[ 5[ODQNU CPF 5KIPCN 9QTFU QP
VJG HQNNQYKPI RCIGU VJG[ YKNN CNGTV [QW VQ VJG RQUUKDKNKV[ QH
UGTKQWU KPLWT[ QT FGCVJ KH [QW FQ PQV EQORN[ YKVJ VJG
YCTPKPIU VJCV CEEQORCP[ VJGO 6JG JC\CTF OC[ EQOG
HTQO UQOGVJKPI OGEJCPKECN QT HTQO GNGEVTKE UJQEM 4GCF
VJG YCTPKPIU ECTGHWNN[
9JGP [QW UGG VJKU 5KIPCN 9QTF QP VJG HQNNQYKPI RCIGU KV
YKNN CNGTV [QW VQ VJG RQUUKDKNKV[ QH FCOCIG VQ [QWT ICTCIG
FQQT CPFQT VJG ICTCIG FQQT QRGPGT KH [QW FQ PQV EQORN[
YKVJ VJG ECWVKQPCT[ UVCVGOGPVU VJCV CEEQORCP[ KV 4GCF
VJGO ECTGHWNN[
9#40+0) 6JKU RTQFWEV ECP GZRQUG [QW VQ EJGOKECNU KPENWFKPI NGCF YJKEJ CTG MPQYP VQ VJG 5VCVG QH
%CNKHQTPKC VQ ECWUG ECPEGT QT DKTVJ FGHGEVU QT QVJGT TGRTQFWEVKXG JCTO (QT OQTG KPHQTOCVKQP IQ VQ
YYY29CTPKPIUECIQX
7PCVVGPFGF 1RGTCVKQP
6JG 6KOGTVQ%NQUG 66% HGCVWTG VJG O[35OCTVRJQPG %QPVTQN CRR CPF O[3 )CTCIG &QQT CPF )CVG /QPKVQT CTG
GZCORNGU QH WPCVVGPFGF ENQUG CPF CTG VQ DG WUGF 10.; YKVJ UGEVKQPCN FQQTU #P[ FGXKEG QT HGCVWTG VJCV CNNQYU VJG
FQQT VQ ENQUG YKVJQWV DGKPI KP VJG NKPG QH UKIJV QH VJG FQQT KU EQPUKFGTGF WPCVVGPFGF ENQUG 6JG 6KOGTVQ%NQUG 66%
HGCVWTG VJG O[3 5OCTVRJQPG %QPVTQN CPF CP[ QVJGT O[3 FGXKEGU CTG VQ DG WUGF 10.; YKVJ UGEVKQPCN FQQTU
%JGEM VJG &QQT
6Q RTGXGPV RQUUKDNG 5'4+175|+0,74;|QT &'#6*
z#.9#;5 ECNN C VTCKPGF FQQT U[UVGOU VGEJPKEKCP KH ICTCIG FQQT DKPFU UVKEMU QT KU QWV QH DCNCPEG #P
WPDCNCPEGF ICTCIG FQQT OC[ 016 TGXGTUG YJGP TGSWKTGF
z0'8'4 VT[ VQ NQQUGP OQXG QT CFLWUV ICTCIG FQQT FQQT URTKPIU ECDNGU RWNNG[U DTCEMGVU QT VJGKT JCTFYCTG
#..|QH YJKEJ CTG WPFGT ':64'/' VGPUKQP
z&KUCDNG #..|NQEMU CPF TGOQXG #..|TQRGU EQPPGEVGF VQ ICTCIG FQQT $'(14' KPUVCNNCVKQP CPF QRGTCVKPI
ICTCIG FQQT QRGPGT VQ CXQKF GPVCPINGOGPV
z&1 016 KPUVCNN QP C QPGRKGEG FQQT KH WUKPI FGXKEGU QT HGCVWTGU RTQXKFKPI WPCVVGPFGF ENQUG 7PCVVGPFGF
FGXKEGU CPF HGCVWTGU CTG VQ DG WUGF 10.; YKVJ UGEVKQPCN FQQTU
6Q RTGXGPV FCOCIG VQ ICTCIG FQQT CPF QRGPGT
z#.9#;5 FKUCDNG NQEMU $'(14' KPUVCNNKPICPF QRGTCVKPI VJG QRGPGT
z10.; QRGTCVG ICTCIG FQQT QRGPGT CV 8 |*\ VQ CXQKF OCNHWPEVKQP CPF FCOCIG
$GHQTG [QW DGIKP
 &KUCDNG NQEMU CPF TGOQXG CP[ TQRGU EQPPGEVGF VQ VJG ICTCIG FQQT
 .KHV VJG FQQT JCNHYC[ WR 4GNGCUG VJG FQQT +H DCNCPEGF KV UJQWNF UVC[ KP RNCEG
UWRRQTVGF GPVKTGN[ D[ KVU URTKPIU
 4CKUG CPF NQYGT VJG FQQT VQ EJGEM HQT DKPFKPI QT UVKEMKPI +H [QWT FQQT DKPFU
UVKEMU QT KU QWV QH DCNCPEG ECNN C VTCKPGF FQQT U[UVGOU VGEJPKEKCP
 %JGEM VJG UGCN QP VJG DQVVQO QH VJG FQQT #P[ ICR DGVYGGP VJG HNQQT CPF VJG
DQVVQO QH VJG FQQT OWUV PQV GZEGGF   OO 1VJGTYKUG VJG UCHGV[ TGXGTUCN
U[UVGO OC[ PQV YQTM RTQRGTN[
 6JG QRGPGT UJQWNF DG KPUVCNNGF CDQXG VJG EGPVGT QH VJG FQQT +H VJGTG KU C VQTUKQP
URTKPI QT EGPVGT DGCTKPI RNCVG KP VJG YC[ QH VJG JGCFGT DTCEMGV KV OC[ DG
KPUVCNNGF YKVJKP |HGGV  O VQ VJG NGHV QT TKIJV QH VJG FQQT EGPVGT 5GG RCIG 
Torsion
Spring Extension
Spring
OR
2TGRCTCVKQP


$GHQTG ;QW %QPPGEV YKVJ ;QWT 5OCTVRJQPG
/QPKVQT CPF EQPVTQN [QWT ICTCIG FQQT HTQO CP[YJGTG WUKPI VJG O[3 CRR ;QW YKNN PGGF C TQWVGT YKVJ 9K(K CPF C
UOCTVRJQPG QT QVJGT OQDKNG FGXKEG /CMG UWTG [QWT OQDKNG FGXKEG KU EQPPGEVGF VQ [QWT 9K(K PGVYQTM *QNF [QWT
OQDKNG FGXKEG KP VJG RNCEG YJGTG [QWT ICTCIG FQQT QRGPGT YKNN DG KPUVCNNGF CPF EJGEM VJG 9K(K UKIPCN UVTGPIVJ
Wi-Fi signal is weak.
The garage door opener will likely connect to your Wi-Fi
network. If not, try one of the options below.
No Wi-Fi signal. Try one of the following:
• Move your router closer to the garage door opener to
minimize interference from walls and other objects
• Buy a Wi-Fi range extender
• Buy a myQ Internet Gateway (828LG) see page 41
Check Signal Strength. If you see:
Wi-Fi signal is strong. You’re all set!
Install your new garage door opener.
5GG O[3 5OCTVRJQPG %QPVTQN RCIG  VQ EQPPGEV [QWT ICTCIG FQQT QRGPGT VQ [QWT 9K(K PGVYQTM
#FFKVKQPCN +VGOU ;QW /C[ 0GGF
5WTXG[ [QWT ICTCIG CTGC VQ UGG KH [QW YKNN PGGF CP[ QH VJG HQNNQYKPI KVGOU
z : 2KGEGU QH YQQF  /C[ DG WUGF VQ HCUVGP VJG JGCFGT DTCEMGV VQ VJG UVTWEVWTCN UWRRQTVU #NUQ WUGF VQ
RQUKVKQP VJG ICTCIG FQQT QRGPGT FWTKPI KPUVCNNCVKQP CPF HQT VGUVKPI VJG UCHGV[ TGXGTUKPI UGPUQTU
z5WRRQTV DTCEMGV CPF HCUVGPKPI JCTFYCTG /WUV DG WUGF KH [QW JCXG C HKPKUJGF EGKNKPI KP [QWT ICTCIG
z'ZVGPUKQP DTCEMGVU /1&'. # QT YQQF DNQEMU &GRGPFKPI WRQP ICTCIG EQPUVTWEVKQP
GZVGPUKQP DTCEMGVU QT YQQF DNQEMU OC[ DG PGGFGF VQ KPUVCNN VJG UCHGV[ TGXGTUKPI UGPUQT
z(CUVGPKPI JCTFYCTG #NVGTPCVG HNQQT OQWPVKPI QH VJG UCHGV[ TGXGTUKPI UGPUQT YKNN TGSWKTG JCTFYCTG PQV
RTQXKFGF
z&QQT TGKPHQTEGOGPV 4GSWKTGF KH [QW JCXG C NKIJVYGKIJV UVGGN CNWOKPWO HKDGTINCUU QT INCUU RCPGN FQQT
z4CKN GZVGPUKQP MKV 4GSWKTGF KH [QWT ICTCIG FQQT KU OQTG VJCP  HGGV  O JKIJ
6QQNU 0GGFGF
3/16
7/16
1/2
5/32
5/16
5/8
9/16
1/4
7/16
2TGRCTCVKQP


%CTVQP +PXGPVQT[
5CXG VJG ECTVQP CPF RCEMKPI OCVGTKCN WPVKN VJG KPUVCNNCVKQP CPF CFLWUVOGPV KU EQORNGVG +PUVTWEVKQPU HQT VJG CEEGUUQTKGU
YKNN DG CVVCEJGF VQ VJG CEEGUUQT[ CPF CTG PQV KPENWFGF KP VJKU OCPWCN 6JG KOCIGU VJTQWIJQWV VJKU OCPWCN CTG HQT
TGHGTGPEG QPN[ CPF [QWT RTQFWEV OC[ NQQM FKHHGTGPV
# *GCFGT DTCEMGV
$ 2WNNG[
% &QQT DTCEMGV
& %WTXGF FQQT CTO
' 5VTCKIJV FQQT CTO 2CEMCIGF KPUKFG HTQPV TCKN UGEVKQP
( 6TQNNG[
016' $G UWTG VQ CUUGODNG VJG VTQNNG[ DGHQTG UNKFKPI QPVQ TCKN
) 'OGTIGPE[ TGNGCUG TQRG CPF JCPFNG
* 4CKN  HTQPV CPF  EGPVGT UGEVKQPU
+ *CPIKPI DTCEMGVU  2CEMCIGF KPUKFG VJG HTQPV TCKN UGEVKQP
, )CTCIG FQQT QRGPGT OQVQT WPKV
- 5RTQEMGV EQXGT
. p7q DTCEMGV
/ %JCKP CPF ECDNG
0 &QQT EQPVTQN  2WUJ DWVVQP
1 4GOQVG EQPVTQN   $WVVQP
2 6JG 2TQVGEVQT 5[UVGO
5CHGV[ TGXGTUKPI UGPUQTU YKVJ  EQPFWEVQT YJKVG CPF YJKVGDNCEM YKTG CVVCEJGF 5GPFKPI 5GPUQT 
4GEGKXKPI 5GPUQT  CPF 5CHGV[ 5GPUQT $TCEMGVU 
3 $CVVGT[ $CEMWR
016|5*190
9JKVG CPF TGFYJKVG YKTG
1YPGTU OCPWCN
*CTFYCTG
N
A
B
C
H
K
J
O
I
D
E
F
G
L
M
P
Q
2TGRCTCVKQP


*CTFYCTG
ASSEMBLY INSTALLATION DOOR CONTROL
Insulated Staples
(Not Shown)
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
Bolt
Nut 3/8" Lock Washer 3/8"
Master Link (2)
Threaded
Shaft Clevis Pin 5/16"x1-1/2"
Ring
Fastener (3)
Hex Bolt 5/16"-18x7/8" (4)
Lock Washer
5/16"-18 (5)
Nut
5/16"-18 (6)
Self-Threading Screw
1/4"-14x5/8" (2)
Clevis Pin 5/16"x1" Clevis Pin 5/16"x1-1/4"
Carriage Bolt
1/4"-20x1/2" (2)
Wing Nut
1/4"-20 (2)
Lag Screw 5/16"-9x1-5/8" (4)
Screw
6ABx1" (2)
Screw
6ABx1-1/2" (2)
Drywall
Anchors (2)
Screw
6-32x1" (2)
2TGRCTCVKQP


#UUGODN[
56'2  #UUGODNG VJG TCKN CPF KPUVCNN VJG VTQNNG[
6Q RTGXGPV +0,74; HTQO RKPEJKPI MGGR JCPFU CPF HKPIGTU CYC[ HTQO VJG LQKPVU YJKNG CUUGODNKPI VJG TCKN
6Q CXQKF KPUVCNNCVKQP FKHHKEWNVKGU FQ PQV TWP VJGICTCIG FQQT QRGPGT WPVKN KPUVTWEVGF VQ FQ UQ
6JG HTQPV TCKN JCU C EWV QWV pYKPFQYq CV VJG FQQT GPF 6JG TCKN VCD /756 DG QP VQR QH VJG TCKN YJGP CUUGODNGF
 4GOQXG VJG UVTCKIJV FQQT CTO CPF JCPIKPI DTCEMGV RCEMCIGF KPUKFG VJG HTQPV TCKN CPF UGV CUKFG HQT
+PUVCNNCVKQP 5VGR  CPF  016' 6Q RTGXGPV +0,74; YJKNG WPRCEMKPI VJG TCKN ECTGHWNN[ TGOQXG VJG UVTCKIJV
FQQT CTO UVQTGF YKVJKP VJG TCKN UGEVKQP
 #NKIP VJG TCKN UGEVKQPU QP C HNCV UWTHCEG CU UJQYP CPF UNKFG VJG VCRGTGF GPFU KPVQ VJG NCTIGT QPGU 6CDU
CNQPI VJG UKFG YKNN NQEM KPVQ RNCEG
 2NCEG VJG OQVQT WPKV QP RCEMKPI OCVGTKCN VQ RTQVGEV VJG EQXGT CPF TGUV VJG DCEM GPF QH VJG TCKN QP VQR (QT
EQPXGPKGPEG RWV C UWRRQTV WPFGT VJG HTQPV GPF QH VJG TCKN
 #U C VGORQTCT[ UVQR KPUGTV C UETGYFTKXGT KPVQ VJG JQNG KP VJG UGEQPF TCKN UGEVKQP HTQO VJG OQVQT WPKV CU
UJQYP
 %JGEM VQ DG UWTG VJGTG CTG  RNCUVKE YGCT RCFU KPUKFG VJG KPPGT VTQNNG[ +H VJG[ DGECOG NQQUG FWTKPI
UJKRRKPI EJGEM CNN RCEMKPI OCVGTKCN 5PCR VJGO DCEM KPVQ RQUKVKQP CU UJQYP
 5NKFG VJG VTQNNG[ CUUGODN[ VQYCTF VJG UETGYFTKXGT CU UJQYP
 5NKFG VJG TCKN QPVQ VJG p7q DTCEMGV WPVKN KV TGCEJGU CNN VJG UVQRU QP VJG VQR CPF UKFGU QH VJG p7q DTCEMGV
Wear Pads
Front Rail Section
(TO DOOR)
“U” Bracket
(TO MOTOR UNIT)
Trolley
Rail Tab
On Top
Slide to stops
on top and sides
of “U” bracket
Screwdriver


#UUGODN[
56'2  (CUVGPVJG TCKN VQ VJG OQVQT WPKV
6Q CXQKF 5'4+175 FCOCIG VQ ICTCIG FQQT QRGPGT WUG 10.; VJQUG DQNVUHCUVGPGTU OQWPVGF KP VJG VQR QH VJG
QRGPGT
 +PUGTV C Z DQNV KPVQ VJG EQXGT RTQVGEVKQP DQNV JQNG QP VJG DCEM GPF QH VJG TCKN CU UJQYP 6KIJVGP
UGEWTGN[ YKVJ C  NQEM PWV &1 016 QXGTVKIJVGP
 4GOQXG VJG DQNVU HTQO VJG VQR QH VJG OQVQT WPKV
 7UG VJG ECTVQP VQ UWRRQTV VJG HTQPV GPF QH VJG TCKN
 2NCEG VJG p7q DTCEMGV HNCV UKFG FQYP QPVQ VJG OQVQT WPKV CPF CNKIP VJG DTCEMGV JQNGU YKVJ VJG DQNV JQNGU
 (CUVGP VJG p7q DTCEMGV YKVJ VJG RTGXKQWUN[ TGOQXGF DQNVU  &1 016 WUG CP[ RQYGT VQQNU 6JG WUG QH
RQYGT VQQNU OC[ RGTOCPGPVN[ FCOCIG VJG ICTCIG FQQT QRGPGT
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
HARDWARE
“U” Bracket
Cover
Protection
Bolt Hole
Bolt
1/4"-20 x 1-3/4"
Lock Nut
1/4"-20
Bolts (Mounted in the
garage door opener)


#UUGODN[
56'2  +PUVCNN VJG KFNGT RWNNG[
 .C[ VJG EJCKPECDNG DGUKFG VJG TCKN CU UJQYP )TCUR VJG GPF QH VJG ECDNG CPF RCUU CRRTQZKOCVGN[  
EO QH ECDNG VJTQWIJ VJG YKPFQY #NNQY KV VQ JCPI WPVKN #UUGODN[ 5VGR|
 4GOQXG VJG VCRG HTQO VJG KFNGT RWNNG[ 6JG KPUKFG EGPVGT UJQWNF DG RTGITGCUGF +H FT[ TGITGCUG VQ GPUWTG
RTQRGT QRGTCVKQP
 2NCEG VJG KFNGT RWNNG[ KPVQ VJG YKPFQY CU UJQYP
 +PUGTV VJG KFNGT DQNV HTQO VJG VQR VJTQWIJ VJG TCKN CPF RWNNG[ 6KIJVGP YKVJ C  NQEM YCUJGT CPF PWV
WPFGTPGCVJ VJG TCKN WPVKN VJG NQEM YCUJGT KU EQORTGUUGF
 4QVCVG VJG RWNNG[ VQ DG UWTG KV URKPU HTGGN[
 .QECVG VJG TCKN VCD 6JG TCKN VCD KU PGCT VJG KFNGT RWNNG[ QP VJG HTQPV TCKN UGEVKQP 7UG C HNCV JGCF UETGYFTKXGT
CPF NKHV VJG TCKN VCD WPVKN VJG VCD KU XGTVKECN 
Rail
Idler Pulley
Grease Inside
Pulley
Bolt
Chain/cable
Lock Washer
Nut
Bolt Nut 3/8" Lock Washer 3/8"
HARDWARE
Rail Tab


#UUGODN[
56'2  +PUVCNN VJG EJCKP
6Q CXQKF RQUUKDNG 5'4+175 +0,74; VQ HKPIGT HTQO OQXKPI ICTCIG FQQT QRGPGT
z#.9#;5 MGGR JCPF ENGCT QH URTQEMGV YJKNG QRGTCVKPI QRGPGT
z5GEWTGN[ CVVCEJ URTQEMGV EQXGT $'(14' QRGTCVKPI
 2WNN VJG ECDNG CTQWPF VJG KFNGT RWNNG[ CPF VQYCTF VJG VTQNNG[
 %QPPGEV VJG ECDNG VQ VJG TGVCKPKPI UNQV QP VJG VTQNNG[ CU UJQYP (KIWTG 
C 2WUJ RKPU QH OCUVGT NKPM DCT VJTQWIJ ECDNG NKPM CPF VTQNNG[ UNQV
D 2WUJ OCUVGT NKPM ECR QXGT RKPU CPF RCUV RKP PQVEJGU
E 5NKFG VJG ENQUGF GPF QH VJG ENKRQP URTKPI QXGT QPG QH VJG RKPU 2WUJ VJG QRGP GPF QH VJG ENKRQP
URTKPI QPVQ VJG QVJGT RKP
 9KVJ VJG VTQNNG[ CICKPUV VJG UETGYFTKXGT FKURGPUG VJG TGOCKPFGT QH VJG ECDNGEJCKP CNQPI VJG TCKN VQYCTF VJG
OQVQT WPKV CTQWPF VJG URTQEMGV CPF EQPVKPWKPI VQ VJG VTQNNG[ CUUGODN[ 6JG URTQEMGV VGGVJ OWUV GPICIG VJG
EJCKP (KIWTG 
 %JGEM VQ OCMG UWTG VJG EJCKP KU PQV VYKUVGF VJGP EQPPGEV KV VQ VJG VJTGCFGF UJCHV YKVJ VJG TGOCKPKPI OCUVGT
NKPM
 6JTGCF VJG KPPGT PWV CPF NQEM YCUJGT QPVQ VJG VTQNNG[ VJTGCFGF UJCHV
 +PUGTV VJG VTQNNG[ VJTGCFGF UJCHV VJTQWIJ VJG JQNG KP VJG VTQNNG[ $G UWTG VJG EJCKP KU PQV VYKUVGF (KIWTG 
 .QQUGN[ VJTGCF VJG QWVGT PWV QPVQ VJG VTQNNG[ VJTGCFGF UJCHV
 4GOQXG VJG UETGYFTKXGT
HARDWARE
Master
Link
Threaded Shaft
Figure 3
Threaded
Shaft
Outer
Nut
Inner
Nut
Lock
Washer
Master Link
Master
Link
Figure 2
Sprocket
Figure 1
a.
b.
c.


#UUGODN[
56'2  6KIJVGP VJG EJCKP
 5RKP VJG KPPGT PWV CPF NQEM YCUJGT FQYP VJG VTQNNG[ VJTGCFGF UJCHV CYC[ HTQO VJG VTQNNG[
 6Q VKIJVGP VJG EJCKP VWTP VJG QWVGT PWV KP VJG FKTGEVKQP UJQYP
 9JGP VJG EJCKP KU CRRTQZKOCVGN[ GXGP YKVJ VJG DCUG QH VJG TCKN CV KVU OKFRQKPV TGVKIJVGP VJG KPPGT PWV VQ
UGEWTG VJG CFLWUVOGPV +/2146#06 &1 016 QXGTVKIJVGP VJG EJCKP
5RTQEMGV PQKUG ECP TGUWNV KH EJCKP KU VQQ VKIJV QT VQQ NQQUG 9JGP KPUVCNNCVKQP KU EQORNGVG [QW OC[ PQVKEG UQOG EJCKP
FTQQR YKVJ VJG FQQT ENQUGF 6JKU KU PQTOCN +H VJG EJCKP TGVWTPU VQ VJG RQUKVKQP UJQYP YJGP VJG FQQT KU QRGP FQ PQV TG
CFLWUV VJG EJCKP
016' &WTKPI HWVWTG OCKPVGPCPEG #.9#;5 RWNN VJG GOGTIGPE[ TGNGCUG JCPFNG VQ FKUEQPPGEV VJG VTQNNG[ DGHQTG
CFLWUVKPI VJG EJCKP
Outer
Nut Lock
Washer
Trolley
Threaded
Shaft
Inner Nut
To Tighten
Inner Nut
To Tighten Outer Nut
Base of Rail Mid length of Rail
Chain
Chain even with base
of rail at mid length
56'2  +PUVCNN VJG URTQEMGV EQXGT
6Q CXQKF RQUUKDNG 5'4+175 +0,74; VQ HKPIGT HTQO OQXKPI ICTCIG FQQT QRGPGT
z#.9#;5 MGGR JCPF ENGCT QH URTQEMGV YJKNG QRGTCVKPI QRGPGT
z5GEWTGN[ CVVCEJ URTQEMGV EQXGT $'(14' QRGTCVKPI
 2QUKVKQP VJG URTQEMGV EQXGT QXGT VJG URTQEMGV CU UJQYP CPF HCUVGP VQ VJG OQWPVKPI RNCVG YKVJ Z JGZ
UETGYU RTQXKFGF
;QW JCXG PQY HKPKUJGF CUUGODNKPI [QWT ICTCIG FQQT QRGPGT 2NGCUG TGCF VJG HQNNQYKPI YCTPKPIU DGHQTG
RTQEGGFKPI VQ VJG KPUVCNNCVKQP UGEVKQP
Hex Screw #8x3/8"
(Packed with the sprocket cover)
HARDWARE
Hex Screw
Sprocket Cover