Yamaha 90B Outboard Motor User Manual


 
E
3-5
EMU01800*
FILLING OIL
This engine uses the oil injection system,
which provides superior lubrication by
ensuring the proper oil ratio for all operat-
ing conditions. No fuel premixing is need-
ed (except during break-in). Simply pour
gasoline into the fuel tank and oil into the
oil tank. Convenient indicator segments
indicate the status of the oil supply. For
details on reading the indicator segments,
see “Oil level indicator” in this chapter.
To fill the engine oil tank, proceed as fol-
lows:
w
Do not add gasoline into the oil tank. Fire
or explosion could result.
1) Turn the oil filler access cap on top of
the top cowling counterclockwise and
open it.
2) Open the oil tank filler cap by pulling
a tab on the cap.
While many additives available may
reduce deposits, Yamaha recommends
the use of Ring Free Fuel Additive, avail-
able from your Yamaha dealer. Ring Free
has repeatedly proven its ability to clean
combustion deposits from inside the
engine, notably the critical piston-ring-
land area, and fuel system components.
Follow product labeling for use instruc-
tions.
203014
203015
Engine oil tank capacity:
See Chapter 4, “Specifications.”
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