Mercury Freshwater - Page 39

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