ENGLISH
20
Checking and adjusting the steering head bearing *
Check steering head bearing for play periodically. For check put motorcycle
on stand so that the front wheel is off the ground. Now try to move the
fork forward and backward.
To adjust, loosen the collar screw
1
and the 6 clamping screws
2
+
3
on
the upper triple clamp. Insert a pin (6 mm)
4
in the adjusting nut
5
and
adjust as required. Do not tighten the adjusting nut since this might damage
the bearings. Tighten the collar screw
1
to 40 Nm and check the bearing
for easy action. Tap the upper triple clamp with a plastic hammer to avoid
distortion, tighten the clamping screws
2
to 20 Nm and the clamping
screws
3
to 10 Nm.
WARNING
I
F THE STEERING HEAD BEARING IS NOT ADJUSTED TO BE FREE OF PLAY
,
THE MOTORCYCLE
WILL EXHIBIT UNSTEADY DRIVING CHARACTERISTICS AND CAN GET OUT OF CONTROL
.
!
CAUTION
!
I
F YOU DRIVE WITH PLAY IN THE STEERING HEAD BEARING FOR LONGER PERIODS
,
THE
BEARINGS AND SUBSEQUENTLY THE BEARING SEATS IN THE FRAME WILL BE DESTROYED
.
The steering head bearings should be regreased at least once a year
(i.g. Motorex Long Therm 2000)
Adjusting the fork offset (caster) *
The fork offset (center fork legs – center steering head bearing) can be
adjusted to adapt the handling to the race course.
To adjust, loosen the clamping screws
5
on the fork stabilizers. Insert a pin
(6 mm) in the adjusting nut
6
and turn the fork tube 180° in a counter-
clockwise direction (not clockwise or you will change the positioning of the
steering head bearings). The groove
A
must match the slot on the upper
triple clamp. Tighten the clamping screws to 20 Nm.
If the groove
A
is on the left, the offset is 12.5 mm and the caster
97.4 mm. This setting will give you better handling in curves.
If the groove
A
is on the right, the offset is 7.5 mm and the caster
99.2 mm. This setting will give you better driving stability on straight
stretches.
WARNING
T
HE GROOVE
A
MUST ALWAYS MATCH THE SLOT IN THE UPPER TRIPLE CLAMP
. I
F NOT
,
THE MOTORCYCLE WILL RUN OFF TRACK WHICH LEADS TO UNSTABLE HANDLING
.
MAINTENANCE WORK ON CHASSIS AND ENGINE
1
2
2
4
12,5 mm
7,5 mm
A
3
3
5
6
6
5
Summary of Contents for 660 SMC SUPERMOTO 2003
Page 30: ......
Page 31: ......
Page 32: ...KTM SPORTMOTORCYCLE AG 5230 Mattighofen Austria Internet www ktm at...
