Maintenance work on chassis and engine, English – KTM 50 SX JUNIOR User Manual

Page 29

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MAINTENANCE WORK ON CHASSIS AND ENGINE

»

ENGLISH

28

Changing the seat height

The saddle can easily be raised by 25 mm (1 in). This lets you adjust the

height as your child grows.

Figures A and B show the fork and shock absorber positions for a low seat

position. The fork tubes extend approx. 17 mm (0.7 in) (H) above the upper

fork stabilizer. The shock absorber is attached to the upper hole in the frame.

Tighten the clamp screws on the fork stabilizers to 25 Nm (top) and

10 Nm (bottom), the screw on the shock absorber to 45 Nm.

Figures A and B: low seat position

Figures C and D: high seat position

Figures C and D show the fork and shock absorber positions for a high seat

position.Fork tubes are plane with top of upper fork stabilizer. (Screw cap

(Aluminium) protrudes from the top of the upper fork stabilizer)

The shock absorber is attached to the lower hole in the frame. Tighten the

clamp screws on the fork stabilizers to 25 Nm (top) and 10 Nm (bottom), the

screw on the shock absorber to 45 Nm.

The fork tubes may not be lowered any further than as described above, oth-

erwise the clamping on the upper fork stabilizer will no longer be adequate.

Adjusting the throttle cable *

There must always be a 3 to 5 mm (0.1 to 0.2 in) play in the throttle cable.

To check this, move back the protective cover

[1] on the throttle grip. You

must be able to lift the outer covering of the cable 3-5 mm from the adjust-

ing screw

[2], until resistance is felt.

To adjust, loosen the counter nut

[3] and turn the adjusting screw accord-

ingly. Finally tighten counter nut and slide the protective cover back on.

Adjusting the idle speed Dell’Orto PHVA 14 DS (50 SX Junior) *

The idle speed can be adjusted with screw

[4].

The idle speed is increased by turning clockwise.

The idle speed is reduced by turning counter-clockwise.

Adjusting the idle speed Dell’Orto PHBG 19 BS (50 SX) *

The idle speed can be adjusted with screw

[5].

The idle speed is increased by turning clockwise.

The idle speed is reduced by turning counter-clockwise.

3-5 mm

3

1

2

4

5

C

D

H

B

A

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