Honda BF75 Owner's Manual page 30

Gear Oil Check/Change
Oil Level Check
Check the oil level when engine is in the vertical position. Remove the level
screw and see if oil flows out. If no oil comes out, fill through the drain screw
hole until the oil starts to flow out through the level screw hole. If the.re is
water in the oil, the water will flow out first when the drain screw is removed,
or the oil will be a milky color.
Oil Change
Remove the level screw and drain screw to drain the oil. Inject oil through the
drain screw hole until it starts flowing out through the level screw hole.
Reinstall and tighten the level screw and drain screw securely.
CAUTION: If water is detected in the oil, the unit should be inspected by an
authorized Honda dealer.
Recommended Oil: API standard (G L-4 or G L-5)
SAE 90 outboard motor gear oil
Oil capacity: 0.23 II (0.49 US pt) ,
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