Draining The Float Chamber Of The Carburetor; Oil Circuit; Checking The Engine Oil Level - KTM 250 EXC RACING 2004 Owner's Manual

2
1
44
9
8
bk
bp
B
A
5
6
7
bn
bm
3
bo
bl
4

Draining the float chamber of the carburetor

Following every wet cleaning procedure, the float chamber of the
carburetor should be drained in order to remove any water that may have
penetrated into it. Water in the float chamber causes malfunctioning.
Perform this task on a cold engine.
Close the fuel tap and put one end of the hose
2
Open the drain plug (turning it counterclockwise) by serval turns, and
drain the fuel from the float chamber. Then, retighten the drain plug and
open the fuel tap.
WARNING
– F
UEL IS EASILY FLAMMABLE AND TOXIC
. N
THE UTMOST CAUTION EVER PERFORM ANY WORK ON THE FUEL SYSTEM NEAR
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 OF THE FUEL PROPERLY

Oil circuit

4
Via the long oil screen , the oil pump
sump of the transmission. This engine oil flows through an oil line
the cylinder head for camshaft lubrication
7
by the jet screw . An oil duct branches off to the long oil filter
the coarser particles contained in the engine oil are filtered away. Then, the
engine oil arrives at the short oil filter
Now, the purified engine oil is pumped past the bypass valve
bl
conrod bearing and sprayed from below onto the piston through a
bm
nozzle .
bn
The second oil pump draws the engine oil via the short oil screen
of the crankcase, thereby lubricating the transmission gears

Checking the engine oil level

The engine oil level can be checked with the engine 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.
!
I
NSUFFICIENT AMOUNTS OF OR LOW
.
THE ENGINE
1 into a collecting vessel.
. W ,
HEN HANDLING FUEL BE SURE TO EXERCISE
.
. I
MMEDIATELY CLEAN UP ANY FUEL
. M
ATERIALS SATURATED WITH FUEL ARE ALSO EASILY
.
.
3
draws engine oil from the oil
6
; the oil quantity is controlled
9
which also filters the fine particles.
CAUTION
-
GRADE ENGINE OIL LEAD TO PREMATURE WEAR IN
,
5
into
8
where
bk
to the
bo
out
bp
.
!