KTM 250 1998 User Manual

1.5 Checking the setting of the TVC system
NOTE: THE FUNCTION OF THE TVC SYSTEM IS CHECKED WITH THE ENGINE RUNNING.
T
HIS 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 advan-
ce (tooth segment creeps upwards).
S
TART OF ADVANCE:END OF ADVANCE:
250: at 5400 rpm at 7550 rpm
300: at 5300 rpm at 7400 rpm
380: at 5200 rpm at 7200 rpm
– If necessary, turn the adjusting screw
1
.
N
OTE: 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
.
1
1

KTM 250 1998 Specifications

General

Displacement	249 cc
Engine Type	Single cylinder, 2-stroke
Bore x Stroke	66.4 mm x 72 mm
Cooling System	Liquid cooled
Lubrication	Premix (oil in fuel)