Checking Water In Engine Oil Tank; Inspecting Wiring And Connectors; Checking Propeller - Yamaha 40V Owner's Manual

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.
2. Once the engine has warmed up, verify
whether the idle speed is set to specifi-
cation. For idle speed specifications, see
page 9. If you have difficulty verifying the
idle speed, or the idle speed requires ad-
justment, consult a Yamaha dealer or
other qualified mechanic.
EMU29061

Checking water in engine oil tank

A translucent water drain hose is connected
from the bottom of the oil tank to the filler
neck. If water or foreign matter collects in this
hose, consult a Yamaha dealer.
1
1. Drain hose
2. Filler neck side
1
1. Drain hose
2
ZMU03416
2
ZMU04989
2. Filler neck side
EMU29114

Inspecting wiring and connectors

Inspect that each connector is engaged
●
securely.
Inspect that each ground lead is properly
●
secured.
EMU32112

Checking propeller

EWM01881
WARNING
You could be seriously injured if the en-
gine accidentally starts when you are
near the propeller. Before inspecting, re-
moving, or installing the propeller, place
the shift control in neutral, turn the main
switch to " " (off) and remove the key,
and remove the clip from the engine shut-
off switch. Turn off the battery cut-off
switch if your boat has one.
Do not use your hand to hold the propeller
when loosening or tightening the propeller
nut. Put a wood block between the anti-cavi-
tation plate and the propeller to prevent the
propeller from turning.
Maintenance
ZMU03240
75