MerCruiser Axius 350 MAG, User Manual

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Section 2 - Getting to Know Your Power Package
90-899883234 JANUARY 2008 Page 29
JOYSTICK AND TRIM CONTROL
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Typical joystick
While using the Axius joystick, the best boat control is achieved when the sterndrives are
in the full down (in) position. Full down (in) trim maximizes propeller efficiency allowing the
boat to move parallel with the joystick command. The joystick will function while the
sterndrives are trimmed up (out), however control of the boat may be limited or altered
because the inefficiency of the propellers at or near the top of the water surface.
TRAILER AND TRAILER LIMIT POSITION
On digital throttle and shift controls, the trim button (if equipped) also functiones as a trailer
button that trims the sterndrives to a limited up (out) position suitable for trailering purposes
only. Based upon engine RPM, the system limits the amount of trim up (out) and the
availabilty of trailer position. The trailer limit function is designed to prevent damage to swim
platforms.
Depending on the type of control or panel, the trailer position includes a single integral
button to operate both sterndrive units simultaneously or separate buttons for each
sterndrive unit.
Trim without Key
!
CAUTION
The Trim Without Key mode allows trim operation after the ignition key switch is turned
off. To avoid injury or product damage, do not attempt any engine‑ or sterndrive‑related
repairs or maintenance until performing the Wide Open Throttle Reverse operation to
end the Trim Without Key mode.
Trim without key is a method of allowing trim operation after the ignition key switch is turned
off. The command module and PCM remain powered and process trim requests for up to
15 minutes after the key switch is turned off. The command module does not process any
requests other than trim during this period. Once the 15 minute period expires, the
command module sends a command through the CAN lines to shut down the PCM. On
multi‑engine applications, the time‑out is managed separately for each engine.
The trim without key period may be ended at any time by moving the control handle to Wide
Open Throttle Reverse (WOTR) with the key off. To end the 15 minute period for the center
engine in a shadow mode application, ensure all ignition key switches are in the "OFF"
position and both remote control handles are in the Wide Open Throttle Reverse (WOTR)
position.
Electrical System Overload Protection
If an electrical overload occurs, a fuse will blow or the circuit breaker will trip open. You
must find and correct the cause before replacing the fuse or resetting the circuit breaker.