Mercury Freshwater Manual page 39

OWNER SERVICE ASSISTANCE
Symptom
Motor failure
(motor runs at partial
speed)
Motor failure
(motor does not run)
eng
Possible Cause
Electrical
Thermal protection
Damaged speed
potentiometer
Propeller is loose,
damaged, or off‑balance
Weak 12 volt trolling
motor battery
Loose or corroded
battery connections
Wiring or electrical
connection faulty
Electrical
Thermal protection
Three‑position switch is
damaged
Fuse on circuit breaker
is open
Magnets interfering with
armature
Boat wiring
35
Resolution
Connections in the top housing
may be loose or damaged.
Contact service center.
Temperature exceeds
specification. Contact service
center.
Contact service center.
Refer to Removing the
Propeller.
Check 12 volt battery charge.
Recharge or replace battery as
required.
Inspect battery connections for
cleanliness and tightness.
Wire gauge from the battery to
the trolling motor is insufficient.
6 gauge wire is recommended.
Check the connector for a
loose or damaged connection.
Contact service center.
Temperature exceeds
specification. Contact service
center.
Contact service center.
Replace the fuse or reset the
circuit breaker only after
determining the root cause of
the problem.
Turn off the power and
manually rotate the propeller.
If the propeller does not rotate
freely with a slight magnetic
drag, contact service center.
Contact service center.