Fuel System - Mercury 40 Operator's Manual

IMPORTANT: Read the safety and maintenance instructions which accompany your battery.
1. Turn off the engine before servicing the battery.
2. Add water as necessary to keep the battery full.
3. Make sure the battery is secure against movement.
4. Battery cable terminals should be clean, tight, and correctly installed. Positive to positive and negative to
negative.
5. Make sure the battery is equipped with a nonconductive shield to prevent accidental shorting of battery
terminals.

Fuel System

Avoid serious injury or death from gasoline fire or explosion. Carefully follow all fuel system service instructions.
Always stop the engine and do not smoke or allow open flames or sparks in the area while servicing any part
of the fuel system.
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.
ENGINE FUEL FILTER
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 proceeding.
2. Pull out the filter assembly from mount. Hold onto 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
a - Cover
b - Filter element
MAINTENANCE
WARNING
!
c -
d -
47
O‑ring seal
Sight bowl
ob00649