Draining Of Float Chamber Of The Carburetor; Oil Circuit; Checking Engin Oil Level - KTM 400 Owner's Handbook Manual

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B
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bk
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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 causes malfunction.
Perform this task on a cold engine. Close the fuel tap and place a cloth
underneath the carburetor, which is able to absorb any escaping fuel.
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Unscrew the plug and clean it with compressed air. Check the O-ring
and reinstall the plug. Open the fuel tap and check the 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
PROXIMITY OF OPEN FLAMES OR BURNING CIGARETTES
– A
LWAYS ALLOW THE ENGINE TO COOL OFF FIRST
WHICH MAY HAVE BEEN SPILLED
. I
FLAMMABLE N CASE YOU INGESTED FUEL OR FUEL SPLASHED INTO YOUR EYES
CONSULT A DOCTOR IMMEDIATELY
– D !
ISPOSE THE FUEL PROPERLY

Oil circuit

Via the long oil screen 2, the oil pump 1 draws engine oil from the oil
sump of the transmission. This engine oil flows through an oil line 3 into
the cylinder head for camshaft lubrication 4; the oil quantity is controlled
by the jet screw 5. An oil duct branches off to the long oil filter 6 where
the coarser particles contained in the engine oil are filtered away. Then, the
engine oil arrives at the short oil filter 7 which also filters the fine particles.
Now, the purified engine oil is pumped past the bypass valve 8 to the con-
rod bearing 9 and sprayed from below onto the piston through a nozzle bk.
The second oil pump bl draws the engine oil via the short oil screen bm out
of the crankcase, thereby lubricating the transmission gears bn.
Checking the engine oil level
The engine oil level can be checked with the engine being either warm or
cold. Place the motorcycle in an upright position and on a horizontal surface
(not on the side stand).
If the engine is cold, the engine oil must be visible at the lower edge of the
A
inspection glass .
If the engine is warm, the engine oil must be visible up to the upper edge of
B
the inspection glass .
Replenish the engine oil, if necessary.
CAUTION
!
I
NSUFFICIENT AMOUNTS OF OR LOW
.
THE ENGINE
. W ,
HEN HANDLING FUEL BE SURE TO EXERCISE
.
. I
MMEDIATELY CLEAN UP ANY FUEL
. M
ATERIALS SATURATED WITH FUEL ARE ALSO EASILY
.
!
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GRADE ENGINE OIL LEAD TO PREMATURE WEAR IN
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