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STARTING COLD ENGINE
IMPORTANT: Check fluid levels before starting engine. Refer to Maintenance Schedule.
1 Turn on and run engine compartment bilge blower (if equipped) for five minutes. Or, open engine hatch to
air out bilge before attempting to start engine(s).
2 Place drive unit in full DOWN/IN position.
3 Place control handle in NEUTRAL.
4 If engine has not been run for a period of time and will not readily start with the standard starting procedure,
there is a hand pump/primer located on the engine to improve initial fuel supply. Refer to Maintenance - Fuel
System, Priming Fuel System and follow instructions given.
NOTE: The preheat devices (glow plugs) should operate at temperatures lower than –0°C (32°F). An engine
coolant temperature sensor will automatically control activation and duration of preheat cycle.
5 Turn key switch to RUN position to activate the glow plugs. Preheat cycle usually lasts 10 to 15 seconds.
Observe preheat indicator (glow plug) lamp. Lamp should be illuminated when engine cylinder temperature is
too low to sustain combustion. Engine can be started once preheat indicator lamp goes off.
NOTE: The engine should be started only after the lamp goes off.
IMPORTANT: After starting, the key switch should NOT be returned to the OFF position during engine
operation. If the starter switch is in the OFF position and the engine is operating, the battery will not be
charged, audio warning alarms will not be operational in the event of trouble and accessories may not
operate.
6 Turn key switch to START position. Release key when the engine starts. Allow switch to return to RUN
position. Do not operate the engine with the switch in the OFF position without first shutting down the engine,
using the engine stop switch.
CAUTION
Do not attempt to engage the starter while the engine is running as this will lead to starter pinion and
ring gear damage.
7 Ensure all instrumentation is functioning properly and indicating normal readings. Ensure charge indicator
and oil pressure warning lamps go off. Check oil pressure gauge immediately after engine starts. If oil pressure
is not within specified range (Refer to Specifications), stop the engine, locate and correct the problem, or see
your Authorized Mercury MerCruiser Dealer if you are unable to determine the problem.
CAUTION
Do not increase the engine speed until the oil pressure gauge indicates normal. Shut the engine down
if oil pressure does not register on the gauge within 20 to 30 seconds after start.
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