AS MOTOR AS 510 4T A Operator's Manual page 22

For 4-stroke devices:
Engine
A
Before and after each use.
B
Annually or every 50 h.
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By the user when the engine is not running.
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By the user when the engine is running.
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By the authorised service centre.
22
For reliable information, see the operating manual of the en-
gine manufacturer.
Check oil level (see operator's manual of the engine
manufacturer).
Oil change.
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