Inspecting And Replacing Anode(S); Checking Battery (For Electric Start Models) - Yamaha F50 Owner's Manual

7. Put a new gasket on the gear oil drain
screw. Insert and tighten the gear oil
drain screw.
Tightening torque:
9 Nm (0.92 kgf-m, 6.6 ft-lb)
EMU29316

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.
ECM00720
NOTICE
Do not paint anodes, as this would render
them ineffective.
TIP:
Inspect ground leads attached to external
anodes on equipped models. Consult a
Yamaha dealer for inspection and replace-
ment of internal anodes attached to the pow-
er unit.
EMU29323
Checking battery (for electric start
models)
EWM01902
WARNING
Battery electrolyte is poisonous and
caustic, and batteries generate explosive
hydrogen gas. When working near the
battery:
Wear protective eye gear and rubber

gloves.
Do not smoke or bring any other source

ZMU04721
of ignition near the battery.
The procedure for checking the battery var-
ies for different batteries. This procedure
contains typical checks that apply to many
batteries, but you should always refer to the
battery manufacturer's instructions.
ECM01920
NOTICE
A poorly maintained battery will quickly
deteriorate.
ZMU02820
1. Check the electrolyte level.
Maintenance
ZMU04722
93