KTM 250 EXC, Owner'S Manual

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ENGLISH
30
MAINTENANCE WORK ON CHASSIS AND ENGINE
»
15 mm
3,5 mm
1
2
3
4
Mount the lower triple clamp, upper steering head bearing, protection ring,
O-ring, upper triple clamp and the blind screw.
Tighten the collar screw on the lower triple clamp to 80 Nm.
Mount the fork legs and tighten the clamp screws on the lower triple clamp
to 10 Nm in 3 stages.
Adjust the steering head bearing without clearance (see: Checking and adjust-
ing the steering head support) and tighten the clamp screws on the upper
triple clamp to 15 Nm in 3 stages.
Mount the front wheel fender and tighten the screws to 10 Nm.
Mount the hand brake cylinder and tighten the screws to 10 Nm.
Mount the staring number plate.
Mount the front wheel (see: Dismounting and mounting the front wheel).
Checking and adjusting the steering head bearing *
Check steering head bearing for play periodically. To check, put the motorcy-
cle on a stand so that the front wheel is off the ground. Now try to move the
fork forward and backward. For readjusting, loosen the five pinch bolts
[1]
of
the top triple clamp and turn steering stem bolt [2] clockwise 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 tap on the triple
clamp to release tension. Retighten the five pinch bolts to 15 Nm (SX) / 20
Nm (EXC, MXC).
IF 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.
IF YOU DRIVE WITH PLAY IN THE STEERING HEAD BEARING FOR LONGER PERI-
ODS, 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
(e.g. Motorex Long Therm 2000).