KTM 65 SX Owner's Manual page 72

16 SERVICE WORK ON THE ENGINE
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 ventila-
tion, 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.
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