SkyTrak 10054 Operation Manual - Manual (Page 139)

Section 7 - Lubrication and Maintenance
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4. If oil is low, remove oil fill cap (4) and add motor oil to bring oil up to the full mark
in the crosshatch area.
5. Replace oil fill cap and dipstick.
6. Close and secure engine access door.
Note: The standard service interval for engine oil and filter is 250 hours maximum.
If an extended service interval is desired, see your engine manual for specific
guidelines for optimizing oil change intervals.