Battery Inspection; Fuse Replacement - Mercury 150 EFI Service Manual

Battery Inspection

The battery should be inspected at periodic intervals to ensure proper engine starting
capability.
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 posi-
tive and negative to negative.
5. Make sure the battery is equipped with a nonconductive shield to prevent accidental
shorting of battery terminals.

Fuse Replacement

IMPORTANT: Always carry spare SFE 15 and 20 AMP fuses.
The electrical wiring circuits on the outboard are protected from overload by fuses in the
wiring. If a fuse is blown, try to locate and correct the cause of the overload. If the cause
is not found, the fuse may blow again.
1. Open the fuse holder and look at the silver colored band inside the fuse. If band is
broken, replace the fuse. Replace fuse with a new fuse with the same rating.
2. The fuses and circuits are identified as follows:
1. Smart Craft Data Bus Circuit – SFE 15 Ampere Fuse
2. Fuel Injector Harness, Electric Fuel Pump and Oil Pump
3. Main Power Relay, Remote Control Harness and Power Trim
4. Ignition Coils
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90-883728 JULY 2001
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MAINTENANCE
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