KTM 400 SX - Rear Suspension and Chain Maintenance

ENGLISH
17
Changing the spring preloading 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 preloading
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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
2 changes the spring pretension by approxi-
mately 1,75 mm (0,07 in).
Loosen the locking ring
1 with the hook spanner from the tool set. Change the
spring preload with the adjusting ring
2 and re-tighten the locking ring.
BASIC SETTING – SPRING PRELOAD
SX: 17 mm (0.7 in) / SC, EGS: 23 mm (0,9 in)
Lubricate rear suspension linkage
The bearings in the link lever must be greased in regular intervals. For this pur-
pose, a lubricating nipple
3 is mounted on the link lever.
!
CAUTION
!
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FTER EACH TIME THE MOTORCYCLE IS WASHED, IT IS ESPECIALY IMPORTANT TO GREASE
THE LUBRICATING 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 cir-
cumferences. 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.
!
CAUTION
!
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 NITROGEN.
NEVER TRY TO TAKE THE SHOCK ABSORBER APART OR TO DO ANY MAINTENANCE WORK
YOURSELF
. SEVERE INJURIES COULD BE THE RESULT.
3
min. 2,5 mm
1
2
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