Changing The Spring Preload Of The Shock Absorber; Lubricate Shock Absorber Linkage; Checking Rubber Ring On The Rear Shock Absorber - KTM 640 LC4 Owner's Manual

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2
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min. 2,5 mm

Changing the spring preload of the shock absorber

KTM sets the shock absorber for a driver only, weighing approximately 75
kg (165 lb). If you want to take a passenger with you, of if you weigh
considerably more or less than 75 kg (165 lb), you should change the spring
A
preload accordingly . This is easily done.
NOTE:
– Before changing the spring preload note down the basic setting, e.g.
how many threads are visible above the adjusting ring.
– One rotation of the adjusting ring
approximately 1.75 mm (0.07 in).
1
Loosen the locking ring with the hook wrench from the tool set. Change
the spring preload with the adjusting ring
BASIC SETTING – SPRING PRELOAD:
WP 0118Y734 .............A = 23,5mm (640 LC4)
WP 0118Y733 .............A = 22mm
Lubricating the shock absorber linkage
The bearings in the rocker arm must be greased (Motorex Long Therm
2000) in regular intervals. For this purpose, a grease nipple
on the rocker arm.
!
A
FTER EACH TIME THE MOTORCYCLE IS WASHED
GREASE THE GREASE NIPPLE TO PUSH ANY WATER OUT OF THE BEARINGS
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 EVERE INJURIES COULD BE THE RESULT
2
changes the spring preload by
2
and retighten the locking ring.
(640 LC4 Supermoto)
CAUTION
,
IT IS ESPECIALLY IMPORTANT TO
CAUTION
3
is mounted
!
.
!
.