English – KTM Supermoto 400/640LC4-E6 User Manual

Page 19

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ENGLISH

18

Checking and adjusting steering head bearing *

Check steering head bearing for play periodicaly. To check this put
motorcycle on a stand so that the front wheel is off the ground. Now try to
move the fork forward and backward. To adjust, loosen the five clamp
screws

1

of the top triple clamp and turn steering stem bolt clockwise

2

until there is no more play. Don’t tighten the steering stem bolt all the way,
otherwise the bearings will be damaged. With a plastic hammer, lightly rap
on the triple clamp to avoid tension. Re-tighten the five clamp screws with
15 Nm (11 ft.lb).

ƽ

WARNING

ƽ

I

F THE STEERING HEAD BEARING IS NOT ADJUSTED TO BE FREE OF PLAY

,

THE MOTOR

-

CYCLE WILL SHOW AN UNSTEADY DRIVING PERFORMANCE AND CAN GET OUT OF
CONTROL

.

!

CAUTION

!

I

F YOU DRIVE WITH PLAY IN THE STEERING HEAD BEARING FOR LONGER PERIODS

,

FIRST

THE BEARINGS AND THEN THE BEARING SEATS IN THE FRAME WILL BE DESTROYED

.

At least once a year, the steering head bearings should be greased.

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
preload accordingly

A

. 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

4

changes the spring preload by

approximately 1,75 mm (0,07 in).

Loosen the locking ring

3

with the hook wrench from the tool set. Change

the spring preload with the adjusting ring

4

and retighten the locking ring.

BASIC SETTING – SPRING PRELOAD
WP 0118V710.............A = 27mm

(400/640 LC4-E)

WP 0118V720.............A = 15mm

(640 LC4-E Supermoto)

Lubricating the shock absorber linkage

The bearings in the rocker arm must be greased (Shell Advance Grease) in
regular intervals. For this purpose, a grease nipple

5

is mounted on the

rocker arm.

!

CAUTION

!

A

FTER EACH TIME THE MOTORCYCLE IS WASHED

,

IT IS ESPECIALLY IMPORTANT TO

GREASE THE GREASE NIPPLE TO PUSH ANY WATER OUT OF THE BEARINGS

.

A

2

1

3

4

5

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