Kuryakyn 1663 User Manual

INSTALLATION

FIXED MOUNTS FOR MULTI-PURPOSE BACKREST 1663

PARTS INCLUDED

1 Right Mount—Low Seat
1 Hardware Kit Containing
4 Spacers
2 5/16”-18 X 1” Button Socket Cap Screws
4 5/16”-18 X 2” Button Socket Cap Screws
12 5/16” Flat Washers
1 Installation Instructions

Please read and understand entire instructions before starting installation.

1 Left Mount—Low Seat

THANK YOU FOR CHOOSING K

IN ORDER TO PROTECT YOU AND OTHERS FROM POSSIBLE INJURY AND/OR
PROPERTY DAMAGE OR LOSS, PLEASE PAY CLOSE ATTENTION TO ALL
INSTRUCTIONS, WARNINGS, CAUTIONS AND NOTICES REGARDING THE USE
AND CARE OF THIS PRODUCT.

ϋRYAKYN!

THIS INDICATION ALERTS YOU TO THE FACT THAT
IGNORING THE CONTENTS DESCRIBED HEREIN CAN

RESULT IN POTENTIAL DEATH OR SERIOUS INJURY.

This indication alerts you to the fact that ignoring the
contents described herein may negatively affect product
performance and functionality.

This indication alerts you to the fact that ignoring
the contents described herein can result in minor or

moderate potential injury.

TOOLS SUGGESTED

Set of Hex Wrenches, Set of Torx Wrenches, Torque Wrench (FT/LBS) and Set of Hex Bit Sockets

STRICTLY OBSERVE THE FOLLOWING GUIDELINES IN ORDER TO USE THE
PRODUCT PROPERLY AND AVOID POTENTIALLY DANGEROUS ACCIDENTS.

IF INSTALLING THIS PRODUCT FOR ANOTHER PARTY,
PLEASE MAKE SURE THEY RECEIVE THIS COPY OF THE
INSTALLATION INSTRUCTIONS SO THEY ARE AWARE OF

THE IMPORTANT INFORMATION CONTAINED IN THEM.

STEP 1

installation. Park the motorcycle on a hard, level surface and turn off the
ignition.

-cont.-

1663-23HD-0613

Read and understand all steps in the instructions before starting the

INSTALLATION QUESTIONS

Küryakyn warrants that any Küryakyn products

sold hereunder, shall be free of defects in

materials and workmanship for a period of one

(1) year from the date of purchase by the

consumer excepting the following provisions:

● Küryakyn shall have no obligation in the event

the customer is unable to provide a receipt

showing the date the customer purchased the

●The product must be properly installed,

maintained and operated under

●Küryakyn makes no warranty, expressed or

consequential and incidental damages, including

labor and paint, resulting from failure of a

Küryakyn product, failure to deliver, delay in

delivery, delivery in nonconforming condition, or

for any breech of contract or duty between

●Küryakyn products are often intended for use in

specific applications. Küryakyn makes no
warranty if a Küryakyn product is used in

●Küryakyn electrical products are warranted for

one (1) year from the date of purchase by the

consumer. L.E.D.’S contained in components of

Küryakyn products will be warranted for defects

in materials and workmanship for 3 years from

components shall be warranted for one(1) year.

This includes, but is not limited to; control

modules, wiring, chrome & other components.

●Küryakyn makes no warranty of any kind in

regard to other manufacturer¹s products

distributed by Küryakyn. Küryakyn will pass on

all warranties made by the manufacturer and

where possible, will expedite the claim on behalf

of the customer, but ultimately, responsibility for

disposition of the warranty claim lies

For purchasing Küryakyn® products, you

can receive a complete catalog free of charge.

your address to: Küryakyn, P.O. Box 339,

Please indicate either Accessories Catalog for

Harley-Davidson® or GL & Metric Cruisers.

Be sure to ask your local dealer about other

Küryakyn® products, the motorcycle parts and

accessories designed for riders by riders.

©2005 Küryakyn USA® All Rights

CUSTOMER SERVICE

877.370.3604 (toll free)

[e-mail]

or call 715.247.2983

LIMITED WARRANTY

product(s).

normal conditions.

implied, with respect to any gold plated

●Küryakyn shall not be liable for any

Küryakyn and a customer.

applications other than intended.

the date of purchase where as all other

with the manufacturer.

ABOUT OUR CATALOG

Send the Proof-of-Purchase below with

Somerset, WI 54025.

reserved.

products.

NOTE:

correct mount height needed, measure the thickness of the front
of the passenger seat. Measure from the top of the rear fender to
the top of the passenger seat as in PIC 1. Over 6 inches need the
tall mounts, 6 inches and under will use the short mounts.

Due to the great variety of seats available, to determine the

STEP 2

Locate the left and right side (sitting on bike) mounting brackets. PIC 2

STEP 3

Remove the saddlebags to expose the rear fender struts.

STEP 4

Remove the three OEM fasteners on the right side shown in PIC 3.

STEP 5

button socket cap screws through one of the 5/16” flat washers and into
the front hole of the Fixed Mount. PIC 4 Loosely attach the Fixed Mount
to the front location on the strut.

Starting with the right side Fixed Mount, insert one of the 5/16”-18 x 1”

STEP 6

flat washer through each rear hole of the mounting bracket. Place one of
the included spacers over the threads of each screw (PIC 4) and attach
the rear of the Fixed Bracket to the motorcycle. Torque the front and
rear hardware to 14 FT/LBS.

Insert one of the 5/16”-18 X 2” button socket cap screws with a 5/16”

STEP 7

Repeat Steps 4, 5 and 6 for the left side.

STEP 8

Backrest should slide easily between the fixed mounts. If it slides in
easily, proceed to Step 10. If the Backrest seems to bind or you have to
spread the Fixed Mounts apart to insert the Backrest, proceed to the next
Step.

Test fit the Driver/Passenger Backrest between the fixed mounts. The

STEP 9

bike and insert one of the remaining 5/16” flat washers between the
Fixed Mount and each of the spacers and between the front of the Fixed
Mount and the strut, on each button head cap screw. PIC 5 and PIC 6
Torque to 14 FT/LBS.

Remove the button head cap screws securing each Fixed Mount to the

STEP 10

one of the supplied (with the backrest)
5/16”-18 X 7/8” countersunk socket head cap
screws through one of the supplied shoulder
washers, through the Fixed Mount and threading
it to the Driver/Passenger Backrest on each side.
PIC 7 Torque to 15 FT/LBS. If these

fasteners are loosened or removed, see
WARNING! on the next page!

Install the Driver/Passenger Backrest to the Fixed Mounts by inserting

PIC 4

SPACERS

PIC 1

PIC 2

PIC 3

FLAT WASHERS

LEFT SIDE

REMOVE THESE THREE FASTENERS

RIGHT SIDE

PAGE

MEASURE FROM
THE TOP OF
FENDER TO TOP
OF PASSENGER
SEAT

-cont.-

BUTTON SOCKET CAP SCREWS

2

FIXED MOUNTS INSTALLATION

BOTH PIVOT/HINGE SCREWS MUST HAVE THREADLOCK COMPOUND
RE-APPLIED AND RE-TORQUED ONCE REMOVED

AFTER INITIAL INSTALLATION. FAILURE TO DO SO
MAY RESULT IN UNINTENDED LOOSENING AND MAY
CAUSE SERIOUS INJURY OR DEATH. THE FEMALE
THREADS IN THE MULTI-PURPOSE BACKREST AND
THE THREADS ON THE REMOVED SCREWS WILL NEED
TO BE CLEANED TO REMOVE ANY THREADLOCKER
RESIDUE BEFORE RE-INSERTING. RE-APPLY
LOCTITE® THREADLOCKER BLUE 242® OR
EQUIVALENT, AS SHOWN IN PIC 8, RE-TORQUING TO
15 FT-LBS (20.3 NM) USING A TORQUE WRENCH AND
3/16” ALLEN/HEX KEY ATTACHMENT. LET CURE PER
THE THREADLOCK MANUFACTURERS INSTRUCTIONS
AFTER INSTALLATION. IF YOU DO NOT WISH TO
APPLY THREADLOCKER, THEN ORDER A NEW SERVICE
KIT, (P/N 991660) WHICH WILL CONTAIN SCREWS
WITH BLUE THREADLOCK ADHESIVE PRE-APPLIED.

STEP 11

to the straight out position. Lower or raise the backrest to the desired
location. Fold the locking levers over to lock them in place. Gently rock
the Backrest back and forth to ensure the locking pins are engaged in the
notches in the Fixed Mounts. Repeat for the other position of the
Backrest. Visually inspect the Shoulder Washers and Countersunk

Socket Head Cap Screws at the pivot point for any signs of
loosening before each ride. Küryakyn requires checking all
backrest attaching fasteners to the torque specifications defined
in these instructions every 3,000 to 5,000 miles.

NOTE: See instructions for Multi-Purpose Driver/Passenger Backrest,

P/N 1660 or P/N 1661, for adjustment procedures.

Check the operation of the Backrest by folding the locking levers (PIC 9)

THIS BACKREST IS NOT DESIGNED AS A SAFETY
RESTRAINING DEVICE. FAILURE TO HOLD ONTO THE
MOTORCYCLE MAY RESULT IN SERIOUS INJURY OR

DEATH.

Ensure that the installation of this product does not
interfere with the proper operation of the motorcycle
before riding.

It is the installer’s responsibility to ensure that all of the
fasteners (including pre-assembled) are tightened per these

Küryakyn will not provide warranty coverage on

instructions before operation of the motorcycle.

products or components lost due to improper
installation or lack of maintenance. Visually
inspect the Shoulder Washers and Countersunk
Socket Head Cap Screws for any signs of loosening
before each ride. Küryakyn requires checking all
Backrest attaching fasteners to the torque
specifications defined in these instructions every
3,000 to 5,000 miles.

PIC 9

Ride On!

PIC 5

PLACE SHIM
WASHERS
BETWEEN
MOUNTING
BRACKET AND
SPACERS ON
REAR AND
STRUT ON
FRONT

PIC 6

PIC 7

PIC 8

LOCKED

LOCKING LEVERS

SHOULDER
WASHER

COUNTERSUNK SOCKET
HEAD CAP SCREW

APPLY TREADLOCKER
TO SCREW

UNLOCKED

PAGE

3

FIXED MOUNTS INSTALLATION