90-MM6900 15
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES AND/OR SOLUTIONS
Loss of power
• The propeller may be fouled. Remove the propeller; clean or replace if necessary.
• The battery connections may be corroded.
• The battery may have low voltage. Recharge and test for a bad cell.
• The wire gauge from the battery to the trolling motor may be insufficient. (Six-gauge
wire is recommended.)
• A bad or faulty connection or pinched wire could exist in the boat wiring or trolling
motor wiring.
• The permanent magnets may be cracked or chipped. The motor will whine or grind.
• There may be water in the lower unit or oily residue inside the top housing.
Motor makes excessive noise or
vibrates excessively
• The propeller may be fouled. Remove the propeller; clean or replace if necessary.
• The propeller may be loose. Check to see if the propeller is secure.
• The armature may be bent. Remove the propeller and set the motor at medium
speed. Turn the unit on and look for the shaft to wobble.
• The magnets may be interfering with the armature. Turn the power is off. Turn the
prop by hand; it should turn freely with a slight magnetic drag.
• The bearings or bushings may be worn out.
Motor fails to run at any speed
• Check the trolling motor fuse/circuit breaker on the boat.
• Check for loose or corroded connections.
• Check the plug for a loose or bad connection.
• Test the on/off, bypass and micro switches.
• Make sure the power is off. Turn the prop by hand; it should turn freely with a slight
magnet drag.
Motor loses one or more speeds
• There may be loose connections in the top housing.
• The rotary switch may be bad.
• The propeller may be fouled. Remove the propeller; clean or replace if necessary.
• The speed coils in the lower unit may be burned.
Mount is hard to unlatch from
the run or stow position when
using pull rope
• Your bow mount is designed to easily release with a quick pull of the rope handle. If
it does not easily release, it is typically due to improper installation of the bracket.
o It is possible the bracket was not resting evenly on top of the rubber isolators
before it was tightened down.
o Once tightened, the bracket binds up causing the latch to function improperly.
o You can test this by loosening the screws slightly (start with the two
forward screws) and latching the bracket.
o You will usually find the problem area by alternately loosening each
screw until the bracket releases easily.
o The solution is to install shim washers (not provided) and then
retighten the screws.
• Apply general-purpose grease to the latch pins and clamp screws periodically.
Foot pedal is hard to turn
(Mechanical steer models)
• Check to see if the column is bent and binding against outer tube.
• The outer tube may be bent and binding against the column.
• The bottom bushing or bearing may be out of alignment, broken or dirty.
• The steering cable may be kinked; replace the steering cable.
Motor does not turn the full 400
degree rotation
(Digital models only)
• The foot pedal may need to be recalibrated. See page 13 in this manual for
calibration instructions.
Arrow backlight is off
(Digital models only)
• The arrow light turns off after 3 minutes of motor inactivity. If the light stays off,
press the momentary button to turn the light back on. If the light continues to stay
off, take your motor in fro service.
Battery drains
(Variable-speed Digital models
only)
• A slight voltage drain will occur if your variable speed motor remains continually
connected to your battery. Install a power disconnect switch or disconnect the
trolling motor.
Motor automatically throttles back
(Variable speed models only)
• Refer to your nearest Service Dealer for assistance with trolling motor repairs.
Refer to your nearest Service Dealer for assistance with trolling motor repairs.
INFORMATION
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