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 - Mercury 540 Bravo Manual

Power Trim Does Not Operate (Motor Runs But Drive Unit Does
Not Move)
Trim pump oil level low.
Drive binding in gimbal ring.

Electrical Analog Trim Gauge Malfunction

Gauge indicates off‑scale high with no
self‑test
1.
Gauge does not indicate properly but
the self test
Remote Control Operates Hard, Binds, Has Excessive Free‑Play
or Makes Unusual Sounds
Insufficient lubrication on shift and
throttle linkage fasteners.
Loose or missing shift and throttle
linkage fasteners.
Shift or throttle cable kinked.
Friction adjustment excessive.
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.
eng
TROUBLESHOOTING
Possible Cause
Possible Cause
function.
1
function works.
Possible Cause
Fill pump with oil.
Check for obstruction.
Check wires between the sender
and the trim module.
Replace defective trim sender.
Index the trim sender, test the trim
sender circuit or replace defective
trim sender.
Lubricate.
Check all linkages. If any are loose
or missing, see authorized Mercury
Marine dealer immediately.
Replace cable.
Adjust friction.
105
Remedy
Remedy
Remedy