MerCruiser Black Scorpion, User Manual

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Section 2 - Getting to Know Your Power Package
90-865253070 JUNE 2007 Page 25
Throttle Lever -
Throttle functions are controlled by the movement of the throttle lever.
Increase the RPM by moving the throttle lever forward. Achieve Wide Open Throttle (WOT)
by placing the throttle lever in its full forward position. Decrease RPM by moving the throttle
lever back. Achieve minimum RPM (idle) by placing the throttle lever in its full aft position.
Electrical System Overload Protection
If an electrical overload occurs, a fuse will blow or the circuit breaker will trip open. Find
and correct the cause before replacing the fuse or resetting the circuit breaker.
NOTE: In an emergency, when the engine must be operated and the cause for the
high‑current draw cannot be located and corrected, turn off or disconnect all accessories
connected to the engine and instrumentation wiring. Reset the circuit breaker. If the breaker
remains open, the electrical overload has not been eliminated. Further checks must be
made on the electrical system. Contact your authorized dealer.
1. A circuit breaker protects the engine wiring harness and the instrumentation power
lead. Test the circuit breaker by pushing the red button. If the circuit breaker is
functioning properly, the yellow lever will appear. Reset after testing, or if tripped, by
pushing the yellow lever back into the housing.
b
a
22529
Yellow lever style circuit breaker‑typical
a - Yellow lever‑shown tripped b - Red test button
2. A 90 amp fuse is located on the large post of the starter solenoid. This fuse protects
the engine wiring harness if an electrical overload occurs.
mc74907-1