Yamaha F90 - Trouble Recovery; Troubleshooting Common Issues

Maintenance
86
EMU32113
Checking propeller
WARNING
EWM01882
You could be seriously injured if the en-
gine accidentally starts when you are near
the propeller. Before inspecting, remov-
ing, 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.
Checkpoints
z Check each of the propeller blades for ero-
sion from cavitation or ventilation, or other
damage.
z Check the propeller shaft for damage.
z Check the splines for wear or damage.
z Check for fish line tangled around the pro-
peller shaft.
z Check the propeller shaft oil seal for dam-
age.
EMU30663
Removing propeller
EMU29198
Spline models
1. Straighten the cotter pin and pull it out
using a pair of pliers.
2. Remove the propeller nut, washer, and
spacer (if equipped). WARNING! Do not
use your hand to hold the propeller
when loosening the propeller nut.
[EWM01891]
ZMU08110
ZMU07854
ZMU08131
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