KTM RC 390, Owner'S Manual

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18 SERVICE WORK ON THE ENGINE
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Main work
–
Remove the oil filler plug  with the O-ring from the clutch cover and fill up with
engine oil.
Engine oil (SAE 15W/50) ( p. 185)
Info
In order to achieve optimal engine performance, it is not advisable to mix differ-
ent engine oils.
We recommended changing the engine oil when necessary.
–
Install and tighten the oil filler plug with the O-ring.
Danger
Danger of poisoning Exhaust gases are toxic and inhaling them may result in
unconsciousness and/or death.
–
When running the engine, always make sure there is sufficient ventilation,
and do not start or run the engine in an enclosed space without an effective
exhaust extraction system.
–
Start the engine and check that it is oil-tight.
Finishing work
–
Check the engine oil level. ( p. 151)