KTM 250 EXC RACING - Manual (Page 44)

ENGLISH
43
Cleaning the air filter *
A dirty air filter impairs the air-flow rate, reduces the engine performance,
and increases the fuel consumption. In extreme cases, dirt may even get
into the engine and cause damage. Therefore, change the air filter in
regular intervals.
For this purpose, rotate the two quick-release fasteners
1 counter-clock-
wise and pull them outward up to the stop, pull the filter box cover forward
and remove it. Unhook the filter holding brackets
2 at the bottom, swing
them sideways and take the air filter 3 together with the filter support 4
out of the filter box.
! CAUTION !
– D O NOT CLEAN THE AIR FILTER WITH FUEL OR PETROLEUM SINCE THESE WILL
DAMAGE THE FOAM . KTM RECOMMENDS THE PRODUCTS MADE BY “T WIN A IR “ FOR
AIR FILTER MAINTENANCE FOR CLEANING PURPOSES AND TO OIL THE AIR FILTER .
– N EVER START YOUR MOTORCYCLE WITHOUT ANY AIR FILTERS . O THERWISE , DUST
AND DIRT MAY PENETRATE AND CAUSE DAMAGE AND INCREASED WEAR .
Thoroughly wash the air filter in special cleaning fluid and allow it to dry
well. Only press out the filter, do not wring it out under any circumstances.
Oil the dry air filter with a high-grade filter oil. Also clean the air filter box.
Check the carburetor collar for damage and that it is filled correctly.
Mount the air filter on the filter support. Mount the filter together with the
filter support in the filter box, making sure to center them, properly and fix
them with the filter holding bracket.
Checking the adjustment of the hand decompression release
cable *
Start the engine and, at idling speed, slowly pull the hand decompression
lever until you can feel the thumping of the rocker arm on the lever. The
backlash until said thumping should be approx. 10mm, measured at the
lever's outer end. If necessary, correct this backlash.
To adjust, move back the protective cover
5 , loosen the counter nut 6 and
correct the adjustment screw 7 accordingly. Tighten counter nut and push
back protective cover.
! CAUTION !
T HE SETTING OF THE DECOMPRESSION CABLE SHOULD BE CHECKED REGULARY . I F THERE
IS NO PLAY IN THE DEKO - LEVER , THIS CAN RESULT IN ENGINE DAMAGE .
NOTE:
No adjustment need be made to the automatic decompressor.
Adjusting the throttle cables *
The throttle grip should always provide for a backlash of 3-5mm. Besides,
with the engine running, the idling speed must not change if you turn the
handlebar all the way to the left or right.
To adjust the throttle cables, dismount the seat and the tank together with
spoilers. Slide back the protection cover
8 . Loosen the counternut 9 and
turn the adjusting screw bk accordingly. Turning the adjusting screw
counterclockwise will reduce the backlash, turning the adjusting screw
clockwise will increase the backlash.
Tighten the counternut and check whether the throttle grip can be
actuated smoothly. Mount tank and seat.
3
2
4
10 mm
5
6
7
1
8
9
10