Checking Rubber Ring On The Rear Shock Absorber; Checking Chain Tension; Correct Chain Tension; Chain Maintenance - KTM Supermoto 640LC4 Owner's Manual

18
B
A
2 3
✓
min. 2,5 mm
16:42
A = 0 mm
17:42
3
4 4
2
1
Checking rubber ring on the WP rear shock absorber
A rubber ring mounted on the rear shock absorber serves as a vibration
damper. This ring gets pressed together with time and loses its shock
absorbing quality.
Measure the distance between the two discs at various points around their
circumferences. The space should be at least 2.5 mm (0,1 in) wide. Have
the rubber ring replaced by an KTM dealer when compaction due to wear
has exceeded this lower limit.
!
N
OT REPLACING THE RUBBER RING IN TIME CAN RESULT IN DAMAGE TO THE REAR SHOCK
.
ABSORBER
WARNING
T
HE DAMPING UNIT OF THE SHOCK ABSORBER IS FILLED WITH HIGH COMPRESSED
. N
NITROGEN EVER TRY TO TAKE THE SHOCK ABSORBER APART OR TO DO ANY
. S
MAINTENANCE WORK YOURSELF

Checking chain tension

Support the motorcycle on the center stand or side stand, respectively.
Switch transmission to neutral.
Push the chain upwards appr. 30 mm (1,2 in) from the end of the chain
sliding component until the upper part of the chain is tensioned (see
illustration)
A
Now, the distance between chain and swingarm should be 0 mm. The
B
upper part of the chain must be tight (see illustration).
Correct chain tension, if necessary!
WARNING
– I
F CHAIN TENSION IS TOO GREAT
( ,
MISSION CHAIN CHAIN SPROCKETS
WILL BE SUBJECTED TO UNNECESSARY STRESS
.
EVEN CHAIN BREAKAGE
– T
OO MUCH SLACK IN THE CHAIN
JUMPING OFF THE CHAIN WHEELS
THE REAR WHEEL OR DAMAGE THE ENGINE
– I
N EITHER CASE THE OPERATOR IS LIKELY TO LOSE CONTROL OF THE MOTORCYCLE

Correct chain tension

Loosen collar nut 1 , loosen counter nuts
adjusting screws 3 equally far. Tighten counter nuts
Before tightening the wheel spindle, verify that the chain adjusters
sitting close to the adjusting screws and that the rear wheel has been
aligned with the front wheel.
Tighten collar nut 1 with 80 Nm (60 ft.lb).
WARNING
I '
F YOU DON T HAPPEN TO HAVE A TORQUE WRENCH AT HAND
THE TIGHTENING TORQUE CORRECTED BY A
LOOSE AXLE MAY LEAD TO AN UNSTABLE DRIVING BEHAVIOR OF YOUR MOTORCYCLE

Chain maintenance

For long chain life, good maintenance is very important. X-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 X-ring chain spray (Shell Advance Bio Chain).
WARNING
N
O LUBRICATION IS ALLOWED TO REACH THE REAR TIRE OR THE BRAKE DISK
THE ROAD ADHERENCE AND THE REAR WHEEL BRAKING EFFECTS WOULD BE STRONGLY
REDUCED AND THE MOTORCYCLE COULD EASILY GET OUT OF CONTROL
!
W
HEN MOUNTING THE CHAIN JOINT
.
POINT IN RUNNING DIRECTION
Also check sprockets and chain guides for wear, and replace if necessary.
CAUTION
EVERE INJURIES COULD BE THE RESULT
,
PARTS WITHIN THE SECONDARY POWER TRANS
,
TRANSMISSION AND REAR WHEEL BEARINGS
,
RESULTING IN PREMATURE WEAR AND
, ,
ON THE OTHER HAND CAN RESULT IN THE CHAIN
. I ,
F THIS HAPPENS THE CHAIN COULD ALSO BLOCK
.
2 , and turn right and left
2 .
,
MAKE SURE YOU HAVE
KTM
DEALER AS SOON AS POSSIBLE
CAUTION
,
THE CLOSED SIDE OF THE SAFETY DEVICE MUST
!
.
-
)
.
4 are
. A
.
,
EITHERWISE
.
!