Yamaha F50D User Manual

Maintenance

below the lower mark, or drain to the
specified level if it is above the upper
mark.

Dispose of used oil according to local
regulations.

NOTE:

●

For more information on the disposal of
used oil, consult your Yamaha dealer.

●

Change the oil more often when operating
the engine under adverse conditions such

as extended trolling.

EMU29112

Checking wiring and connectors

●

Check that each grounding wire is properly
secured.

●

Check that each connector is engaged se-
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.

EMU29130

Water leakage

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

EMU29140

Engine oil leakage

Check for oil leaks on the around the engine.

NOTE:

If any leaks are found, consult your Yamaha

dealer.

EMU29161

Checking power trim and tilt system

WARNING

EWM00430

●

Never get under the lower unit while it
is tilted, even when the tilt support lever
is locked. Severe injury could occur if
the outboard motor accidentally falls.

●

Make sure no one is under the outboard

motor before performing this test.

Check the power trim and tilt unit for any
sign of oil leaks.

Operate each of the power trim and tilt
switches / the power tilt switches on the
remote control and engine bottom cowl-
ing (if equipped) to check that all switch-
es work.

Tilt the outboard motor up and check
that the trim and tilt rod is pushed out
completely.

Check that the trim and tilt rod is free of
corrosion or other flaws.

1. Lower level mark
2. Oil dipstick
3. Upper level mark

ZMU05091

1. Trim and tilt rod

ZMU03662