KTM 250 SX - Manual (Page 18)

Repair manual KTM 250 / 300 / 380
Art No 3206004 -E
2-4C
Checking the setting of the TVC system
The function of the TVC system is checked with the engine running.
This test checks the start of advance and the end of advance.
– For this, remove the left control cover.
– Connect a rev counter (either to the ignition cable or to the blue/white
cable in the electronics box, depending on the rev counter design).
– Start engine, accelerate gently and observe when the TVC system
starts to advance (tooth segment creeps upwards).
– If necessary, turn the adjusting screw 1 .
NOTE: Twisting the adjusting screw in delays the commencement of
adjustment by the TVC system, twisting the adjusting screw out means
that the TVC system will perform the adjustment earlier.
Bleeding of the hydraulic clutch
– Take off cover together with rubber bellows.
– At the slave cylinder of the clutch, remove the bleeder nipple
2 . It its
place, mount the bleeder syringe 3 which is filled with SAE 10
hydraulic oil.
– Refill oil, until oil is discharged from the bore 4 of the master cylinder
in a bubble-free state. Make sure that the oil does not overflow.
! CAUTION !
– H AVING COMPLETED THE BLEEDING PROCEDURE , YOU HAVE TO VERIFY THAT THE
OIL LEVEL IN THE MASTER CYLINDER IS CORRECT .
– KTM USES BIODEGRADABLE HYDRAULIC OIL FOR THE HYDRAULIC CLUTCH
CONTROL . N EVER MIX BIODEGRADABLE HYDRAULIC OILS WITH MINERAL OILS .
– A LWAYS USE BIODEGRADABLE HYDRAULIC OIL SAE 10 TO FILL UP THE MASTER
CYLINDER . N EVER REFILL WITH MINERAL HYDRAULIC OIL OR BRAKE FLUID .
1
start of advance end of advance
250 Model 1999 5400 U/min 7550 U/min
250 from Modell 2000 on 5000 U/min 7000 U/min
300 up to Modell 2000 5300 U/min 7750 U/min
300 from Modell 2001 on 5900 U/min 7750 U/min
380 5200 U/min 7200 U/min
2
3
4