Mercury Zeus User Manual

Section 7 - Troubleshooting
Page 130 90-879172181 eng FEBRUARY 2011
Steering System
Symptom Remedy
Steering wheel operates without resistance,
but steers boat.
Starboard key switch turned off. Turn starboard key switch on.
The circuit breaker for the helm circuit is tripped. Reset the circuit breaker.
Steering wheel does not steer the boat.
Station is not active; transfer helm to the station required.
For contingent operation, change to joystick for directional control if limited
RPMs are sufficient. In strong currents or high winds use the ERC levers to
steer by gear selection and throttle requirement. Contact your Authorized
Cummins MerCruiser Diesel Repair Facility.
Check steering actuator fluid level and fill if necessary. See Section 5,
Maintenance.
Refer to Contingent Operations, Steering and Trim—Manual Override or
contact your Authorized Cummins MerCruiser Diesel Repair Facility.
Steering works, but boat is not as responsive.
Turn the key switch to off and back to on.
Check that all engines are running.
Check trim tab function.
Check steering actuator fluid level and fill if necessary. See Section 5,
Maintenance.
Contact your Authorized Cummins MerCruiser Diesel Repair Facility.
Steering wheel turned past end stop.
Key off and key on to restore steering wheel self‑centering, Autopilot, steering
wheel feedback, and to attempt to erase fault code.
Trim Tabs
Symptom Remedy
Automatic trim tabs not working.
Ensure that the trim tab switch is in the automatic position.
Check steering actuator fluid level and fill if necessary. See
Section 5, Maintenance.
Contact your Authorized Cummins MerCruiser Diesel Repair
Facility.
Automatic trim tabs working, but erratic.
Check steering actuator fluid level and fill if necessary. See
Section 5, Maintenance.
Contact your Authorized Cummins MerCruiser Diesel Repair
Facility.
Boat Response Changes
Symptom Remedy
Boat response sluggish
Check that all engines are on and functioning properly. Restart any stopped engine.
Check VesselView for fault codes.
Check fuel quality.
Check and drain the water separating fuel filter.
Boat vibrates or is slow to respond
following a noise or impact.
1. Shut down engines and check for damage in the engine room.
2. Check in the engine room or under the boat for damage to the drives.
3. Return to dock at reduced speed.
4. Contact your Authorized Cummins MerCruiser Diesel Repair Facility if impact damage
is found or suspected.

Mercury Zeus Specifications

General

Brand	Mercury
Model	Zeus
Category	DC Drives
Language	English