Appearance Description Cause Solution
Improper installation
The belt ribs begin separating
from the joined strands. If left
unattended, the cover will often
separate, causing the belt to
unravel.
Improper belt installation is a
common cause of premature
failure. One of the outermost belt
ribs is placed outside the pulley
groove, causing a belt rib to run
without a supporting or aligning
pulley groove.
The belt should be
replaced immediately.
Ensure all ribs of the
replacement belt fit into
the pulley grooves.
Operate the engine. Then,
with the engine off and the
battery disconnected,
inspect the belt for proper
installation.
Misalignment
Sidewalls of the belt may appear
glazed or the edge‑cord may
become frayed and the ribs are
removed. A noticeable noise may
result. In severe cases, the belt
can jump off the pulley.
Pulley misalignment. Misalignment
forces the belt to kink or twist while
running, causing premature wear.
Replace the belt and verify
the alignment of the
pulley.
Chunk‑out
Pieces or chunks of rubber
material have broken off the belt.
When chunk‑out has occurred, a
belt can fail at any moment.
Chunk‑out can happen when
several cracks in one area move
parallel to the cord line. Heat, age,
and stress are the primary
contributors.
Replace the belt
immediately.
Uneven rib wear
The belt shows damage to the
side with the possibility of breaks
in the tensile cord or jagged
edged ribs.
A foreign object in the pulley can
cause uneven wear and cut into the
belt.
Replace the belt and
inspect all pulleys for
foreign objects or damage.
Cracking
Small visible cracks along the
length of a rib or ribs.
Continuous exposure to high
temperatures, the stress of bending
around the pulley leads to cracking.
Cracks begin on the ribs and grow
into the cord line. If three or more
cracks appear in a three‑inch
section of a belt, 80% of the life is
gone.
Replace the belt
immediately.
Battery
Refer to the specific instructions and warnings accompanying your battery. If this information is not available, observe the
following precautions when handling a battery.
!
WARNING
Recharging a weak battery in the boat, or using jumper cables and a booster battery to start the engine, can cause serious
injury or product damage from fire or explosion. Remove the battery from the boat and recharge in a ventilated area away
from sparks or flames.
Section 4 - Maintenance
Page 84 90-8M0145546 eng MAY 2018
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