HONDA Outboard Motor BF90A - Manual (Page 39)

37
Cooling System Indicator OTHER FEATURES
Overrev Limiter
Anodes
CONTROLS AND FEATURES
COOLING SYSTEM INDICATOR
ANODE
(each side)
ANODE
(stern bracket)
The engine is equipped with an
overrev limiter to prevent the
possibility of mechanical damage
from excessive engine speed.
The overrev limiter may be activated
during operation, limiting engine
speed, if the outboard motor is tilted
excessively, or when propeller
ventilation occurs during a sharp turn.
If the overrev limiter is activated,
check the trim angle of the outboard
motor.
The anodes are made of a sacrificial
material that helps to protect the
outboard motor from corrosion.
Water should flow from the cooling
system indicator while the engine is
running. This shows that water is
circulating through the cooling
system.
If water stops flowing while the
engine is running, that indicates a
cooling system problem, such as
clogged water intakes, which will
cause engine overheating.
There are two anodes on the gear
case, one on the stern bracket, and
two small anodes in the water
passages of the engine block.
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