Maintenance
60
EMU29318
Inspecting and replacing anode(s)
Yamaha outboard motors are protected from corrosion by
sacrificial anodes. Inspect the external anodes periodically.
Remove scales from the surfaces of the anodes. Consult a
Yamaha dealer for replacement of external anodes.
NOTICE
ECM00721
Do not paint anodes, as this would render them ineffec-
tive.
TIP:
Inspect ground leads attached to external anodes on
equipped models. Consult a Yamaha dealer for inspection
and replacement of internal anodes attached to the power
unit.
EMU29324
Checking battery (for electric start models)
WARNING
EWM01903
Battery electrolyte is poisonous and caustic, and batter-
ies generate explosive hydrogen gas. When working
near the battery:
Wear protective eye gear and rubber gloves.
Do not smoke or bring any other source of ignition
near the battery.
The procedure for checking the battery varies for different
batteries. This procedure contains typical checks that apply
to many batteries, but you should always refer to the battery
manufacturer’s instructions.
NOTICE
ECM01921
A poorly maintained battery will quickly deteriorate.
1.
Check the electrolyte level.
2.
Check the battery’s charge. If your boat is equipped
with the digital speedometer, the voltmeter and low bat-
tery alert functions will help you monitor the battery’s
charge. If the battery needs charging, consult your
Yamaha dealer.
3.
Check the battery connections. They should be clean,
secure, and covered by an insulating cover.
WARNING!
Bad connections can produce shorting or arcing
and cause an explosion.
[EWM01913]
EMU42331
Connecting the battery
WARNING
EWM00573
Mount the battery holder securely in a dry, well-ventilat-
ed, vibration-free location in the boat. Install a fully
charged battery in the holder.
NOTICE
ECM01125
Do not reverse the battery cables. Otherwise, the electri-
cal parts could be damaged.
1.
Make sure the main switch (on applicable models) is
“
” (off) before working on the battery.
2.
Connect the red battery cable to the POSITIVE (+) termi-
nal first. Then connect the black battery cable to the
NEGATIVE (-) terminal.
3.
The electrical contacts of the battery and cables must
be clean and properly connected, or the battery will not
start the engine.
Connecting an accessory battery (optional)
If connecting an accessory battery, consult your Yamaha
dealer about correct wiring. For the fuse size, see ABYC (E-
11).
Tightening torque:
3.0 N·m (0.30 kgf·m, 2.2 lb·ft)
1. Anode
1
1
1. Red cable
2. Black cable
3. Battery
ZMU01
8
11
1
2
3
U6GR30E0.book Page 60 Thursday, April 12, 2018 9:28 AM
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2019 Yamaha Motor Corporation, U.S.A.
