GAS GAS EC 250 2021 Owner's Manual page 133

SERVICE WORK ON THE ENGINE 18
Danger
Danger of poisoning Exhaust gases are toxic and inhaling
them may result in unconsciousness and death.
–
Always make sure there is sufficient ventilation when
running the engine.
–
Use effective exhaust extraction when starting or run-
ning the engine in an enclosed space.
–
Start the engine and check for leaks.
Finishing work
–
Check the gear oil level. ( p. 128)
131