1 Introduction
This manual is written to document every possible system option.
Your system may not include every available option for single or twin screw reverse reduction gear
applications.
Only those sections that apply to your specific installation are relevant to your vessel.
If additional options described within this manual are desired, contact your dealer for availability/
compatibility with your system.
1.1 Basic Theory of Operation
The ClearCommand Marine Propulsion Control System (hereafter referred to as ClearCommand or System) is
electronic and requires a 12 or 24 VDC power supply, one Processor per engine/clutch and one Control Head
per remote station. The ClearCommand commands the vessel’s throttle and shift using a single Control Head
lever.
One electric cable per Control Head lever connects the remote station(s) to the Processor(s). Only one remote
station will have command at a given time and the Station-in-Command is indicated by a red light located on
the Control Head. Station transfer is accomplished by pressing the Control Head mounted transfer button.
1.1.1 9120 Processor (Throttle-Servo 2, Shift-Solenoid) or 9122 Processor (Throttle-Servo 2,
Shift-Solenoid, Troll-Solenoid).
The 9120 or 9122 System is designed for pleasure and light commercial marine vessels that require
remote control of:
9120
• mechanically actuated engines
• solenoid activated clutches
9122
• mechanically actuated engines
• solenoid activated clutches
• solenoid activated trolling valves
The 9120 or 9122 Processor is typically mounted in the engine room area and is connected
mechanically to the vessel’s main engine throttle selector lever with standard 33C type push-pull
cables.
The 9120 Processor controls the electrical Ahead and Astern Shift Solenoids at the transmission, via
electric cable.
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