KTM Super Duke 990s - Manual (Page 28)

ENGLISH
27
MAINTENANCE WORK ON CHASSIS AND ENGINE
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Adjusting the basic position of the hand brake lever
The basic position of the hand brake lever can be modified by turning the
adjusting screw [1]. This lets you adapt the position of the pressure point (the
resistance you feel on the hand brake lever when the brake pads are pressed
against the brake disk) to fit any hand.
AT THE HAND BRAKE LEVER, FREE TRAVEL MUST AT LEAST BE 3 MM (0.12 IN).
ONLY THEN MAY THE PISTON IN THE HAND BRAKE CYLINDER BE MOVED (TO BE
RECOGNIZED BY THE GREATER RESISTANCE OF THE HAND BRAKE LEVER). IF
THIS FREE TRAVEL IS NOT PROVIDED, PRESSURE WILL BUILD UP IN THE BRAK-
ING SYSTEM, AND THE FRONT WHEEL BRAKE MAY FAIL DUE TO OVERHEATING.
Checking the front brake fluid level
The brake fluid reservoir for the front brake is located on the left side of the
handlebar and has a "MIN" and a "MAX" mark. The brake fluid level may not
fall below the "MIN" mark when the vehicle is parked in a vertical position.
– IF THE BRAKE FLUID LEVEL DROPS BELOW THE MINIMUM EITHER THE BRAKE
SYSTEM HAS A LEAK OR THE BRAKE PADS ARE COMPLETELY WORN DOWN.
IN THIS CASE, CONSULT AN AUTHORIZED KTM DEALER IMMEDIATELY.
– HAVE THE BRAKE FLUID CHANGED AT AN AUTHORIZED KTM WORKSHOP
EVERY 2 YEARS.
Refilling front brake fluid *
It is not necessary to refill brake fluid under normal conditions (see General
information on KTM disk brakes).
However, brake fluid must be refilled as soon as the brake fluid level reaches
the MIN mark.
Remove the screws [2] and cover [3] with the rubber boot [4]. Move the hand
brake cylinder in a horizontal position and add DOT 5.1 (Motorex Brake Fluid
DOT 5.1). Press the rubber boot together and remount the cover. Wash off
any overflowing or spilled brake fluid with water. Actuate the front brake until
you feel the pressure point.
– ACTUATE THE FRONT BRAKE UNTIL YOU FEEL THE POINT OF PRESSURE.
– NEVER USE DOT5 BRAKE FLUID! IT IS BASED ON SILICONE OIL AND OF A PUR-
PLE COLOR. SEALS AND BRAKE HOSES MUST BE ESPECIALLY ADAPTED
TO IT.
– STORE BRAKE FLUID OUT OF REACH OF CHILDREN.
– BRAKE FLUID CAN CAUSE SKIN IRRITATION. AVOID CONTACT WITH SKIN AND
EYES. IF YOU GET BRAKE FLUID IN YOUR EYES, RINSE WITH PLENTY OF WATER
AND CONSULT A DOCTOR.
– DON’T LET BRAKE FLUID GET IN CONTACT WITH PAINT, IT IS AN EFFECTIVE
PAINT REMOVER.
– USE ONLY CLEAN BRAKE FLUID TAKEN FROM A TIGHTLY SEALED CONTAINER.
Checking the front brake pads
The brake pads can be inspected from below. The linings must be at least
1 mm (0.04 in) thick.
AT THEIR MOST WORN POINT BRAKE PAD LININGS SHOULD NOT BE THINNER
THAN 1 MM, OTHERWISE THEY COULD LEAD TO BRAKE FAILURE. FOR YOUR OWN
SAFETY DON’T PUT OFF HAVING YOUR BRAKE PADS CHANGED.
IF THE BRAKE PADS ARE REPLACED TOO LATE WHEN THE LINING IS PARTLY OR
COMPLETELY WORN OFF, THE STEEL PARTS ON THE BRAKE PADS WILL GRIND
AGAINST THE BRAKE DISKS. THIS SIGNIFICANTLY DECREASES THE BRAKING
EFFECT AND DESTROYS THE BRAKE DISKS.
min. 3 mm
1
2
3
4
min.
1 mm