MerCruiser 350 MAG Owner's Manual page 37

1. A circuit breaker provides protection for the engine wiring harness and the
instrumentation power lead. The circuit breaker can be tested by pushing the red
button. If the circuit breaker is functioning properly, the yellow lever will appear. Reset
the yellow lever after testing, or if tripped, by pushing the yellow lever back into the
housing.
2. A 90 amp fuse is located on the large post of the starter solenoid. This fuse is designed
to protect the engine wiring harness if an electrical overload occurs.
3. Four fuses are located on the port side of the engine. These fuses protect the main
power, fuel pump, ignition, and accessory circuits.
90-864195072 OCTOBER 2007
a
Yellow lever style circuit breaker‑typical
a - Yellow lever‑shown tripped
Section 2 - Getting to Know Your Power Package
b
22529
b - Red test button
mc74907-1
mc77602-1
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