KTM 125 SX Motorcycle User Manual


 
ENGLISH
19
MAINTENANCE WORK ON CHASSIS AND ENGINE »
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 60 Nm.
Mount the fork legs and tighten the clamp screws on the lower triple clamp
to 12 Nm in 3 stages.
Adjust the steering head bearing with zero clearance (see section on check-
ing and adjusting the steering head support). Hold the middle clamp screw
[A] in place with Loctite 243. Tighten the clamp screws on the upper triple
clamp to 17 Nm in 3 stages.
Hold the middle clamp screw [A] in place with Loctite 243.
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. To adjust the 5 clamping screws [1] and [3], loosen
the upper triple clamp and turn the end screw [2] until no play is left. Don’t
tighten the steering stem bolt all the way, otherwise the bearings will be dam-
aged. With a plastic hammer, lightly tap on the triple clamp to release ten-
sion. Hold the middle clamp screw [3] in place with Loctite 243. Retighten
the five pinch bolts.
17 Nm (
pinch bolts
1)
Loctite 243 + 17 Nm (
pinch bolts
3)
If the steering head bearing is not adjusted to be free of play, the motorcy-
cle will exhibit unsteady driving characteristics and can get out of control.
Hold the midddle clamp screw [3] in place with Loctite 243.
If you drive with play in the steering head bearing for longer periods, the bear-
ings 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 Term 2000).
How to change the handlebar position
The handlebar position can be readjusted by 22 mm. Thus, you can put the
handlebar in the position that is the most convenient for you.
2
1
1
A
3