Engine Oil Requirements; Fuel Requirements; Gasoline - Yamaha F9.9 Owner's Manual

EMU39693

Engine oil requirements

Select an oil grade according to the average
temperatures in the area where the outboard
motor will be used.
Recommended engine oil:
YAMALUBE 4M FC-W or 4-stroke
outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Recommended engine oil grade 2:
SAE 15W-40/20W-40/20W-50
API SH/SJ/SL
Engine oil quantity:
0.8 L (0.85 US qt, 0.70 Imp.qt)
If oil grades listed under Recommended en-
gine oil grade 1 are not available, select an al-
ternative oil
Recommended engine oil grade 2.
Recommended engine oil grade 1
SAE
-4 14 32 50
-20 -10 0 10
10W–30
10W–40
5W–30
Recommended engine oil grade 2
SAE
-4 14 32 50
-20 -10 0 10
Specifications and requirements
grade listed
68 86 104 122˚F
20 30 40 50˚C
ZMU06854
68 86 104 122˚F
20 30 40 50˚C
15W–40
20W–40
20W–50
ZMU06855
EMU36361

Fuel requirements

EMU41333

Gasoline

Use a good quality gasoline that meets the
minimum octane requirement. If knocking or
pinging occurs, use a different brand of gas-
oline or premium unleaded fuel. Yamaha rec-
ommends that you use alcohol-free gasoline
(see Gasoline with Ethanol) whenever possi-
ble.
The use of a poor quality gasoline may result
in starting and running problems. If you en-
counter drivability problems, which you sus-
pect could be related to the fuel you are
using, Yamaha recommends that you switch
to a recognized high quality brand of gaso-
line, such as a gasoline that is advertised as
Top Tier Detergent Gasoline. NOTICE: Fail-
under
ure to comply with these recommenda-
tions may also result in unscheduled
maintenance, fuel system damage, and in-
API
ternal engine damage.
Recommended fuel:
SE
Regular unleaded gasoline
SF
Min. pump octane number (PON):
SG
86
SH
SJ
SL
ECM01982
NOTICE
 Do not use leaded gasoline. Leaded
gasoline can seriously damage the en-
gine.
API
 Avoid getting water and contaminants in
the fuel tank. Contaminated fuel can
cause poor performance or engine dam-
age. Use only fresh gasoline that has
SH
SJ
been stored in clean containers.
SL
Gasoline with Ethanol
Two types of gasoline are commonly avail-
able in the U.S.A. and Canada for use in au-
tomobiles and boats: conventional gasoline
[ECM04480]
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