Fuel Requirements; Gasoline - Yamaha F50 Owner's Manual

Recommended engine oil:
YAMALUBE 4M FC-W or 4-stroke out-
board 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 (without oil filter re-
placement):
1.9 L (2.01 US qt, 1.67 Imp.qt)
Engine oil quantity (with oil filter replace-
ment):
2.1 L (2.22 US qt, 1.85 Imp.qt)
If oil grades listed under Recommended en-
gine oil grade 1 are not available, select an
alternative oil grade listed under Recom-
mended 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
15W–40
Specifications and requirements
API
68 86 104 122˚F
20 30 40 50˚C
SG
SH
ZMU06854
API
68 86 104 122˚F
20 30 40 50˚C
SH
20W–40
20W–50
ZMU06855
EMU36360

Fuel requirements

EMU41331

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
recommends that you use alcohol-free gaso-
line (see Gasoline with Ethanol) whenever
possible.
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, we recommend that you switch to a
recognized high quality brand of gasoline,
such as a gasoline that is advertised as Top
Tier Detergent Gasoline. Failure to comply
with these recommendations may also result
in unscheduled maintenance, fuel system
damage, and internal engine damage.
Recommended fuel:
Regular unleaded gasoline
SE
Min. pump octane number (PON):
SF
86
SJ
ECM01981
SL
NOTICE
Do not use leaded gasoline. Leaded

gasoline can seriously damage the en-
gine.
Avoid getting water and contaminants

in the fuel tank. Contaminated fuel can
cause poor performance or engine
damage. Use only fresh gasoline that
has been stored in clean containers.
SJ
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
19