Cleaning The Air Filter; Exhaust System; Cleaning The Spark Arrestor (Exc Usa); Draining Of Float Chamber Of The Carburetor - KTM 125SX Owner's Handbook Manual

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EXC
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Cleaning the air filter *

The air filter must be cleaned prior to every race or whenever the motorcycle
has been exposed to great quantities of dust.
For this purpose, rotate the two quick-release fasteners
and pull them outward up to the stop, pull the filter box cover forward and
remove it. Unhook the filter holding brackets
sideways and take the air filter
the filter box.
!
D
O NOT CLEAN AIR FILTER WITH FUEL OR PETROLEUM SINCE THESE WILL DAMAGE THE
. KTM
FOAM RECOMMENDS THE PRODUCTS MADE BY
.„A C
MAINTENANCE CTION LEANER
.
OIL THE AIR FILTER
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 carburetor collar for damage and that it is filled correctly.
Mount the air filter on the filter support. Apply grease to the face
filter to improve its sealing properties. Mount the filter together with the fil-
ter support in the filter box, making sure to properly center them, and fix
them with the filter holding bracket.

Exhaust system *

5
Silencers whose caps is detachable are filled with glass-fiber yarn. Let this
package be ckecked at least after 4000 km or at once a year. Glass-fiber
yarn that is too loose may cause a drop in performance and curtail the silen-
cer's silencing effect.
To replace the glass-fiber yarn packing
7
off the outer tube . Use adhesive tape to attach the new glass-fiber yarn
packing to the inner tube, and slide on outer tube. Mount silencer cap.
Glass-fiber yarn packings are available at your authorized KTM dealer.
WARNING
T
HE EXHAUST SYSTEM BECOMES VERY HOT WHILE THE MOTORCYCLE IS RUNNING
NOT START WORK ON THE EXHAUST SYSTEM UNTIL IT HAS PROPERLY COOLED DOWN
.
AVOID BURNS

Cleaning the spark arrestor (EXC USA) *

With these models, the spark arrestor is part of the exhaust silencer. Clean it
every 4000 km (2500 miles) to guarantee proper functioning. Also clean the
spark arrestor when replacing the glass fiber yarn filling.
After assembling the silencer, remove the plug
Close the opening of the muffler with a rag and press the accelerator
approximately 20 times. The carbon deposits will be blown out through the
opening. Then turn off the engine and let the exhaust system cool down.
Grease the plug with molycote grease and mount the plug.

Draining of float chamber of the carburetor

Following every wet-cleaning procedure, the float chamber of the carbure-
tor should be drained in order to remove any water that may have penetra-
ted into it. Water in the float chamber leads to engine malfunction.
Make sure you do this while the engine is cold. Close the fuel tap, and place
a cloth under the carburetor, which is capable of absorbing the leaking fuel.
9
Unscrew the plug , and clean it with compressed air. Then, mount plug
together with gasket, open fuel tap, and check float chamber for leaks.
WARNING
F
UEL IS EASILY FLAMMABLE AND TOXIC
. N
THE UTMOST CAUTION EVER PERFORM ANY WORK ON THE FUEL SYSTEM IN THE PRO
XIMITY OF OPEN FLAMES OR BURNING CIGARETTES
. I
COOL OFF FIRST MMEDIATELY CLEAN UP ANY FUEL WHICH MAY HAVE BEEN SPILLED
M
ATERIALS SATURATED WITH FUEL ARE ALSO EASILY FLAMMABLE
FUEL OR FUEL SPLASHED INTO YOUR EYES
D !
ISPOSE THE FUEL PROPERLY
1 counter-clockwise
2 at the bottom, swing them
3
together with the filter support
CAUTION
PUTOLINE
" „A
FOR CLEANING PURPOSES AND
6
, remove the silencer cap and pull
8
and start the motorcycle.
. W ,
HEN HANDLING FUEL BE SURE TO EXERCISE
. A
LWAYS ALLOW THE ENGINE TO
. I
N CASE YOU INGESTED
,
CONSULT A DOCTOR IMMEDIATELY
4
out of
!
FOR AIR FILTER
F "
CTION LUID TO
A of the
. D
O
,
TO
-
.
.