English – KTM 250 EXC 2004 User 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