ENGLISH
19
Chain maintenance
O-ring chains require only modest maintenance. The best way is to use lots
of water, but never use brushes or solvents. After letting the chain dry, you
can use a special O-ring chain spray (i.e. Shell Advance Bio Chain).
WARNING
N
O LUBRICATION IS ALLOWED TO REACH THE REAR TIRE OR THE BRAKE DISK
,
EITHER
-
WISE THE ROAD ADHERENCE AND THE REAR WHEEL BRAKING EFFECTS WOULD BE STRON
-
GLY REDUCED AND THE MOTORCYCLE COULD EASILY GET OUT OF CONTROL
.
!
CAUTION
!
W
HEN MOUNTING THE CHAIN JOINT
,
THE CLOSED SIDE OF THE SAFETY DEVICE MUST
POINT IN RUNNING DIRECTION
.
A
LSO CHECK SPROCKETS AND CHAIN GUIDES FOR WEAR
,
AND REPLACE IF NECESSARY
.
Chain wear
In order to check the chain wear, regard the following instructions:
Shift the gear into idling and pull the upper chain strand with approx. 10-
15 kilogramm (33 lb) upwards (see figure). Now one can measure a space
of 18 chain reels at the lower chain strand. The chain should be replaced at
the latest when a space of 272 mm (10,70 in) is measured. Chains do not
always wear off evenly, therefore repeat the measurement at different pla-
ces on the chain.
NOTE:
If you mount a new chain, the sprockets should also be replaced. New
chains wear faster if used on old used sprockets.
Maintaining chain tension eccentrics
To ensure trouble-free adjustment, take the chain tension eccentrics out at
least once a year for maintenance them. To do this:
– Remove rear wheel
– Loosen hexagon nuts
1
on the left and right swing arm fists
– Remove eccentrics
– Clean eccentrics and swing arm fists thoroughly and grease the slide
faces with a Molykote grease or spray
– Replace eccentrics (eccentric with the thread goes in the left swing arm
fist)
– Turn both eccentrics to the same position (marks should be aligned with
the notches in the swing arm fists
– Tighten hexagon nuts on the swing arm fists with 45 Nm (33 ft.lb)
– Mount the rear wheel, tighten the wheel spindle to 80 Nm (59 ft.lb) and
adjust the chain tension.
WARNING
I
F YOU DON
’
T HAPPEN TO HAVE A TORQUE WRENCH AT HAND
,
MAKE SURE YOU HAVE
THE TIGHTENING TORQUE CORRECTED BY A
KTM
DEALER AS SOON AS POSSIBLE
.
!
CAUTION
!
I
F THE ECCENTRICS ARE NOT ALIGNED
,
THE REAR WHEEL WILL REST AT AN ANGLE IN THE
SWING ARM
. T
HIS WILL STRESS THE REAR WHEEL AND SWING ARM BEARINGS AND
DAMAGE THEM IF NOT CORRECTED
.
✓ ✕
15 KG
max. 272 mm
1 2 3
16 17 18
1
Summary of Contents for DUKE 640 e
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Page 41: ...ENGLISH 39 Notices...
Page 42: ...ENGLISH 40 Schaltplan...
