Mercury 540 Bravo - Power Trim Does Not Operate (Motor Runs but Drive Unit Does Not Move); Electrical Analog Trim Gauge Malfunction; Remote Control Operates Hard, Binds, Has Excessive Free-Play or Makes Unusual Sounds

Power Trim Does Not Operate (Motor Runs But Drive Unit Does
Not Move)
Possible Cause Remedy
Trim pump oil level low. Fill pump with oil.
Drive binding in gimbal ring. Check for obstruction.
Electrical Analog Trim Gauge Malfunction
Possible Cause Remedy
Gauge indicates off‑scale high with no
self‑test
1.
function.
Check wires between the sender
and the trim module.
Replace defective trim sender.
Gauge does not indicate properly but
the self test
1
function works.
Index the trim sender, test the trim
sender circuit or replace defective
trim sender.
Remote Control Operates Hard, Binds, Has Excessive Free‑Play
or Makes Unusual Sounds
Possible Cause
Remedy
Insufficient lubrication on shift and
throttle linkage fasteners.
Lubricate.
Loose or missing shift and throttle
linkage fasteners.
Check all linkages. If any are loose
or missing, see authorized Mercury
Marine dealer immediately.
Shift or throttle cable kinked. Replace cable.
Friction adjustment excessive. Adjust friction.
1. Self‑test: When the key switch is placed to the "RUN" position, the pointer on the analog gauge will sweep from
the bottom of the scale to the top of the scale and then point to the actual trim position.
TROUBLESHOOTING
eng 105