© Öhlins Racing AB. All rights reserved. Any re-
printing or unauthorized use without the written
permission of Öhlins Racing AB is prohibited.
Printed in Sweden.
Mounting Instructions YA639_0 Issued 2007 01 18
These instructions and other documents
can be downloaded from
www.ohlins.com
Mounting Instructions
Kit Contents:
Part no. Pcs.
Shock absorber YA639 1
Öhlins Sticker 00192-01 2
Memo Notes Sticker 01180-01 1
Owner’s Manual 07242-01 1
Before installing this shock absorber,
check the contents of the kit listed
below. If anything is missing, please
contact your nearest Öhlins dealer.
SHOCK ABSORBER YA639
for Yamaha R6
During storage and transportation,
especially at high ambient tempera-
ture, some of the oil and grease used
for assembling may leak and stain
the packaging. This is in no way det-
rimental to the product, wipe off the
excessive oil/grease with a cloth.
Before installing this product, read the Öhlins Owner’s Manual!
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Öhlins Racing AB, Box 722, S-194 27 Upplands Väsby, Sweden.
Phone +46 8 590 025 00 Fax +46 8 590 025 80
www.ohlins.com
WITH SET-UP DATA
Set-up Data
Spring preload 13 mm
Compression 12 clicks
Rebound damping 10 clicks
Shock absorber length 294
+4
mm
Stroke 60 mm
Spring 21040-31
(95 N/mm)
Free spring length 160
0
mm
-2
-3
4
4
NOTE!
When delivered the Öhlins shock absorber is
dialed to the recommended settings for the
specifi c vehicle model. If you have changed the
setting, reset according to the following:
The adjuster has a right hand thread. Turn the
adjuster clockwise to fully closed (pos. zero
[0]). Turn counter clockwise to open and count
the clicks until you reach the recommended
number (see Set-up Data).
CAUTION!
Do not use force, delicate sealing surfaces can
be damaged. Handtighten only.
Length Adjustment
We advise to remove the shock absorber
from the vehicle before adjusting the
length. Use two 24 mm wrenches. Hold
the upper nut with one hand and at the
same time loosen the lock nut (lower nut).
Turn the end eye/bracket to the desired
length. Tightening torque: 40 Nm
WARNING!
Remember to lock the lock nut after
adjusting the length.
WARNING!
The adjustable end eye/bracket must not
be threaded out more than that the groove
is fully visible beneath the lock nut. This
is maximum length. After adjusting, make
sure that the lock nut is tightened.
HOW TO INSTALL
1
Put the motorcycle on a workstand so that the
rear wheel barely touches the ground.
WARNING!
Make sure the vehicle is securely supported so
that it will not tip.
2
Remove the seat and the tank side panel.
3
Loosen the brake fl uid reservoir.
4
Remove the two lower screws on the sub
frame.
5
Loosen, but do not remove, the upper, screws
of the sub frame.
6
Remove the screws, one in the front and one
on each side, on the tank.
7
Fold up the tank and loosen the upper attach-
ment nut of the original shock absorber.
8
Remove the screw holding the pull rods to the
swing arm. Remove the lower shock absorber
attachment.
9
Fold up the rear frame. Hold the frame in an
upward position to reach the upper attach-
ment of the shock absorber. Loosen the upper
attachment of the original shock absorber.
Remove the original shock absorber.
NOTE!
Recommendation! Before installing the Öhlins
shock absorber:
• clean the vehicle thoroughly
• adjust the length of the shock absorber (check
the headlight angle after adjusting the length!)
10
Install the Öhlins shock absorber in the same
way as the original unit. Use the original
screws.
NOTE!
Lower the motorcycle so that the shock
absorber is sligthly compressed, before tighten-
ing the screws.
WARNING!
It is advisable to have an Öhlins dealer install the
shock absorber.
!
1
4
5
3
6
9
8
2
x 2
x 2
x 2
x 2
x 2
11
Reinstall the rear frame, tank, side cover, seat
and brake fl uid reservoir. Make sure that all
removed parts are installed in the same way as
they were before the installation.
WARNING!
Make sure that all screws are tightened to the
correct torque and that nothing fouls or restricts
movement of the shock absorber when the sus-
pension is fully compressed or extended.
7
ADJUSTMENTS
1
2
Spring Pre-load
Turn the Hydraulic Adjuster knob to set
the spring pre-load. Turn clockwise to
increase the pre-load and turn counter
clockwise to decrease.
Compression Damping
Adjust by turning the gold knob labelled
“COMP” on the cylinder head (1). Or,
use a 14 mm socket T-bar and turn the
hexagon nut on the adjuster knob (2).
Turn clockwise to increase damping, turn
counter clockwise to decrease.
Rebound Damping
Adjust by turning the black knob labelled
“REB” on the cylinder head (1). Or, use
a 14 mm socket T-bar and turn the
hexagon nut on the adjuster knob (2).
Turn clockwise to increase damping, turn
counter clockwise to decrease.
C
O
M
P
R
E
B
C
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M
P
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E
B
1
C
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P
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E
B
2
3
2
3
3
/