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JASO T903 MA
TEMPERATURE
0°C
32°F
5W/40
10W/50
B
A
11
5
10
4
7
6
8
1
2
9
Engine oil
Automobile engine oil used to be used for four-stroke motorcycles before
there were separate motorcycle specifications. Different technical develop-
ments made it necessary to have a separate specification for four-stroke
motorcycles - the JASO T903 MA standard. Whereas car engines require
long changing intervals, motorcycle engines require a higher power output
at higher speeds. Most motorcycle engines also use the same oil to lubricate
the transmission and the clutch. The JASO MA standard responds to these
special requirements.
Only use fully synthetic engine oils that meet the JASO MA quality require-
ments (see information on the can).
KTM recommends Motorex Power Synt 4T in the 10W/50 viscosity (for
temperatures over 0°C, 32°F) or 5W/40 (for temperatures under 0°C, 32°F).
Checking the engine oil level
The engine oil level can be checked when the engine is cold or warm.
To check, place the motorcycle in an upright position on a level surface.
If the engine is cold, the oil level should be visible at the lower edge
the inspection glass.
If the engine is warm, the oil level should be visible at the upper edge
the inspection glass.
Add engine oil if necessary.
– I
NSUFFICIENT AMOUNTS OF OR LOW
IN THE ENGINE
– D
O NOT OVERFILL THE ENGINE CASE
– D
O NOT UNDERFILL THE ENGINE CASE
Oil circuit
The oil pump
12
the oil filter
4
, they inject motor oil to the piston pin bearing and the piston head. The
second oil line leads the main oil flow to the frame breast pipe
motor oil is cooled off. Then the motor oil flows through the fine screen
6
filter
that removes even the finest of contaminants from the motor oil.
The cleaned motor oil is pumped via an oil line and the clutch cover into the
crankshaft to the conrod bearing
case. A additional oil pump
and pumps it through the oil canal
4
gears. The motor oil reaches the oil sump via the gear wheels. The timing
chain
bk
cylinder head. The motor oil reaches the carnshaft
through the bore
3
!
CAUTION
-
GRADE ENGINE OIL LEAD TO PREMATURE WEAR
.
.
.
1
pumps the motor oil past the bypass valve
3
. Beyond the oil filter, one of the oil lines forks off to the jets
7
and drains from there into the crank
8
suctions the motor oil out of the crank case
9
to the gear wheels of the 4th and 5th
also dips into the oil sump and propels motor oil upwards to the
bl
.
A
of
B
of
!
39
2
and through
5
where the
bm
and the valves
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