Checking Wiring And Connectors; Exhaust Leakage; Water Leakage; Engine Oil Leakage - Yamaha F4 Owner's Manual

Maintenance
1. Oil filler cap
Engine oil grade/capacity:
See page 34
5. Start the engine and make sure that
there are no oil leaks.
6. Turn off the engine and wait 3 minutes.
Recheck the oil level using the dipstick
to be sure the level falls between the up-
per and lower marks. Fill with oil if it is
below the lower mark, or drain to the
specified level if it is above the upper
mark.
NOTE:
For disposal of used oil consult your
G
Yamaha dealer.
The oil should be changed more often
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when the engine is operated under ad-
verse conditions such as extended trolling.
EMU29112

Checking wiring and connectors

Check that each grounding wire is properly
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secured.
Check that each connector is engaged se-
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curely.
EMU29120

Exhaust leakage

Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
45
EMU29130

Water leakage

Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
1
EMU29140

Engine oil leakage

Check for oil leaks on the around the engine.
NOTE:
If any leaks are found, consult your Yamaha
ZMU02677
dealer.
EMU29171

Checking propeller

EWM00321
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 lanyard
from the engine stop 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
turning.
" (off) and re-