
CHECKING THE ENGINE
AFTER OPERATION
• Check that the key switch is in the OFF
position and master battery switch (if
equipped) is turned to OFF.
• Fill the fuel tank. See Filling the Fuel
Tank on page 22.
• Close the seacock (if equipped).
NOTICE: Be sure to close the seacock.
Neglecting to close the seacock could
allow water to leak into the boat and
may cause it to sink.
• If there is a risk of freezing, drain the
seawater system. See Draining the
Cooling System on page 66.
• At temperatures below 0˚C (32˚F), drain
seawater system and connect the engine
heater (if equipped).
ENGINE OPERATION
GM Series Operation Manual 39
© 2007 Yanmar Marine International
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