KTM 250 EXC 2004 - Manual (Page 30)

ENGLISH
29
Check chain tension
Jack the motorcycle up on its frame so that the rear wheel no longer tou-
ches the ground.
Press the chain upward at the end of the chain sliding component. The
distance between the chain and the swing arm should be approx. 8 - 10 mm
(0.31 - 0.39 in). In the course of this procedure, the upper chain portion A
must be taut (see drawing). If necessary, correct the chain tension.
ƽ WARNING ƽ
– I F THE CHAIN TENSION IS TOO GREAT , PARTS WITHIN THE SECONDARY TRANSMISSION
( CHAIN , CHAIN WHEELS AND REAR WHEEL BEARINGS ) WILL BE SUBJECTED TO
UNNECESSARY STRESS , RESULTING IN PREMATURE WEAR AND EVEN CHAIN BREAKAGE .
– T OO MUCH SLACK IN THE CHAIN , ON THE OTHER HAND , CAN RESULT IN THE CHAIN
JUMPING OFF THE CHAIN WHEELS . I F THIS HAPPENS , THE CHAIN COULD ALSO BLOCK
THE REAR WHEEL OR DAMAGE THE ENGINE .
– I N EITHER CASE THE OPERATOR IS LIKELY TO LOSE CONTROL OF THE MOTORCYCLE .
Correct chain tension
Loosen collar nut 1 , loosen lock nuts 2 , and turn right and left adjusting
screws 3 equally far. Tighten lock nuts.
Before tightening the collar nut, verify that the chain adjusters 4 are sitting
close to the adjusting screws and that the rear wheel has been aligned with
the front wheel.
Tighten collar nut
1 to 80 Nm (60 ft.lb).
ƽ WARNING ƽ
– I F YOU DON ’ T HAPPEN TO HAVE A TORQUE WRENCH AT HAND , MAKE SURE YOU
HAVE THE TIGHTENING TORQUE CORRECTED BY A KTM DEALER AS SOON AS
POSSIBLE . A LOOSE AXLE MAY LEAD TO AN UNSTABLE DRIVING BEHAVIOR OF
YOUR MOTORCYCLE .
– T IGHTEN THE COLLAR NUT WITH THE REQUIRED TORQUE . A LOOSE WHEEL SPINDLE
MAY LEAD TO AN UNSTABLE BEHAVIOR OF YOUR MOTORCYCLE .
NOTE:
The large adjusting range of the chain adjusters (32mm) allows you to use
different secondary ratios in combination with the same chain length. The
chain adjusters
4 can be rotated by 180°.
! CAUTION !
A LWAYS MOUNT THE CHAIN TENSIONER EQUALLY ALIGNED .
2
3
B
4
1
4
B
3
2
8-10 mm
A