Maintenance
58
2.
Remove the filter cup, catching any
spilled fuel in a rag.
3.
Remove the filter element, and wash it in
solvent. Allow it to dry. Inspect the filter
element and O-ring to make sure they
are in good condition. Replace them if
necessary. If any water is found in the
fuel, the Yamaha portable fuel tank or
other fuel tanks should be checked and
cleaned.
4.
Reinstall the filter element in the cup.
Make sure the O-ring is in position in the
cup. Insert the cup and O-ring into the fil-
ter housing. Lift up and hold the locking
tab to screw the ring nut onto the filter
housing until the ring is lightly seated.
5.
Tighten the ring nut approximately an
additional 1/4 turn until the ring nut is
tight. Align one of the four larger ring nut
tabs with the locking tab and release it to
lock the ring nut in position.
6.
Run the engine and check the filter and
lines for leaks.
NOTE:
If any water is in the fuel, the red ring in the
fuel filter unit will float. If so, remove the cup
and drain the water.
EMU29041
Inspecting idling speed
WARNING
EWM00451
●
Do not touch or remove electrical parts
when starting or during operation.
●
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
CAUTION:
ECM00490
This procedure must be performed while
the outboard motor is in the water. A
flushing attachment or test tank can be
used.
A diagnostic tachometer should be used for
this procedure. Results may vary depending
on whether testing is conducted with the
flushing attachment, in a test tank, or with the
outboard motor in the water.
1.
Start the engine and allow it to warm up
fully in neutral until it is running smooth-
ly.
1. Locking tab
2. Float
1. Filter cup ring nut
2. Float
3. Filter cup
4. O-ring
5. Filter element
6. Filter housing
2
1
ZMU04005
6
5
4
2
1
3
ZMU04836
✩✱✣✬✤✧✲✣ ✫
©
2019 Yamaha Motor Corporation, U.S.A.
