Honda BF75D Owner's Manual page 62

When you check the oil level with the dipstick, you might notice the engine oil
appears milky or the oil level has increased. If you notice either condition,
change the engine oil. See the following table for an explanation of these
conditions.
Operating Method
Running the engine below
3,000 rpm for more than 30%
of the time so the engine does
not warm up.
Frequent starting and stopping
without allowing the engine to
warm up.
Result
• Water condenses in the
engine and mixes with
the oil, resulting in a
milky appearance.
• Unburned fuel mixes
with the oil, increasing
the volume of oil.
PRE-OPERATION CHECKS
Oil filler cap removal (Unlock):
OIL FILLER CAP
Effect
The engine oil
deteriorates,
becomes less
efficient as a
lubricant, and
causes an
engine
malfunction.
1)Turn the oil filler cap 90°
counterclockwise so the lug of the
cap sets horizontally.
2)Pull the cap to remove it.
Rib of the ACG cover
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