G
A U G E S A N D
S
W I T C H E S
5–1
C h a p t e r 5 : G a u g e s a n d S w i t c h e s
Yamaha Engine Instrumentation
D
IGITAL
S
PEEDOMETER
• Battery Voltage Indicator
This feature indicates the battery charge when the engine(s) off and the alternator output when
the engine is running. A reading of 12 or 13 volts with the engine(s) off is normal indicating a
fully-charged battery. Readings below 11 indicate a weak battery which may not start the
engines. A reading of 13 to 15 volts when the engine(s) is running is normal. Readings over
15 volts may indicate regulator problems. Low or fluctuating readings may indicate loose
connections or trouble in the regulator and alternator circuit.
• Clock
This feature is battery powered and may need to be reset if the battery select switch is turned
to the “off” position.
• Fuel Meter
This feature indicates the gas tank(s) fuel level. Remember two things when reading this
gauge:
• The accuracy of your gauge varies with the attitude of your boat in the water (trim or list).
• The fuel pickup tube inside the gas tank is not capable of withdrawing all of the fuel from
the tank.
For these reasons, never operate your boat at extremely low fuel levels.
• Low Fuel Warning Indicator
This feature indicates when the fuel level in the main fuel tank is becoming low.