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Maintenance
Installation
1.
Lower the top cowl over the engine. Bring the front of the cowl down first and engage the front hook, then lower the cowl
into its seated position with the bottom cowl.
2.
Apply some downward pressure on the bottom cowl and then lock the cowl in place by pushing in the cowl latch. Ensure
the top cowl is securely fastened by pulling up on the back of the cowl.
Fuel System
Fuel is flammable and explosive. Ensure that the key switch is off and the lanyard is positioned so that the engine cannot
start. Do not smoke or allow sources of spark or open flame in the area while servicing. Keep the work area well ventilated
and avoid prolonged exposure to vapors. Always check for leaks before attempting to start the engine, and wipe up any
spilled fuel immediately.
Before servicing any part of the fuel system, stop engine and disconnect the battery. Drain the fuel system completely. Use an
approved container to collect and store fuel. Wipe up any spillage immediately. Material used to contain spillage must be
disposed of in an approved receptacle. Any fuel system service must be performed in a well ventilated area. Inspect any
completed service work for sign of fuel leakage.
Fuel Line Inspection
Visually inspect the fuel line and primer bulb for cracks, swelling, leaks, hardness, or other signs of deterioration or damage. If
any of these conditions are found, the fuel line or primer bulb must be replaced.
Fuel Filter (Low Pressure)
Check the fuel filter for water accumulation or sediment. If water is in the fuel, remove the sight bowl and drain the water. If the
filter appears to be contaminated, remove and replace.
Removal
1.
Read Fuel System servicing information and Warning, preceding.
2.
Pull out the filter assembly from mount. Hold on to the cover to prevent it from turning and remove the sight bowl. Empty
contents into an approved container.
3.
Pull out the filter element and replace it if necessary.
a
b
c
d
Installation
1.
Push the filter element into the cover.
2.
Place the O‑ring seal into its proper position on the sight bowl and screw the sight bowl hand‑tight into the cover.
3.
Push filter assembly back into mount.
IMPORTANT: Visually inspect for fuel leakage from the filter by squeezing the primer bulb until firm, forcing fuel into the
filter.
Fuse Replacement ‑ Electric Start Models
IMPORTANT: Always carry spare SFE 20 amp fuses.
The electric starting circuit is protected from overload by an SFE 20 amp fuse. If the fuse is blown, the electric starter motor will
not operate. Try to locate and correct the cause of the overload. If the cause is not found, the fuse may blow again.
Page 1B-6
WARNING
!
9694
© 2016 Mercury Marine
a -
Cover
b -
Filter element
c -
O‑ring seal
d -
Sight bowl
90-8M0105568 eng MARCH 2016
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Troubleshooting
