Exhaust Leakage; Water Leakage; Checking Propeller - Yamaha 20D Owner's Manual

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EMU29120

Exhaust leakage

Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EMU29130

Water leakage

Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EMU32110

Checking propeller

EWM01610
WARNING
You could be seriously injured if the en-
gine accidentally starts when you are
near the propeller.
Before inspecting, removing, or install-
G
ing the propeller, remove the spark
plug caps from the spark plugs. Also,
place the shift control in neutral, turn
the main switch to "
move the key, and remove the cord
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 pro-
G
peller when loosening or tightening the
propeller nut. Put a wood block be-
tween the anti-cavitation plate and the
propeller to prevent the propeller from
ZMU03737
Checkpoints
G
G
G
G
" (off) and re-
G
Maintenance
turning.
Check each of the propeller blades for
wear, erosion from cavitation or ventila-
tion, or other damage.
Check the propeller shaft for damage.
Check the splines for wear or damage.
Check for fish line tangled around the pro-
peller shaft.
Check the propeller shaft oil seal for dam-
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