English, Maintenance work on chassis and engine – KTM MXC User Manual
Page 32
ENGLISH
31
MAINTENANCE WORK ON CHASSIS AND ENGINE
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Check chain tension
Jack the motorcycle up on its frame so that the rear wheel no longer touches
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.
– EXCESSIVE TENSIONING OF THE CHAIN WILL PUT ADDITIONAL LOAD ON THE
COMPONENTS OF THE SECONDARY DRIVETRAIN (CHAIN, BEARINGS OF TRANS-
MISSION AND REAR WHEEL). ASIDE FROM RESULTING PREMATURE WEAR, IF
WORST COMES TO WORST THE CHAIN MAY RUPTURE OR THE COUNTERSHAFT
OF THE TRANSMISSION MAY BREAK.
– TOO MUCH SLACK IN THE CHAIN, ON THE OTHER HAND, CAN RESULT IN THE
CHAIN JUMPING OFF THE CHAIN WHEELS. IF THIS HAPPENS, THE CHAIN COULD
ALSO BLOCK THE REAR WHEEL OR DAMAGE THE ENGINE.
– IN 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.
To ensure the correct alignment of the rear wheel, the marks at the left and
right chain adjusters must be positioned identically in relation to the
reference marks
[B]. Tighten the counter nut of the adjusting screws.
Before tightening thr 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.
– IF 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 BEHAV-
IOR OF YOUR MOTORCYCLE.
– TIGHTEN 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°.
8-10 mm / 0,3-04in
A
2
2
3
1
4
B
B
3
4