Startingjstopping Procedure; Starting Procedure; Preheat; Start - Universal M3-20A Operator's Manual

STARTING/STOPPING PROCEDURE
STARTING PROCEDURE
Place the transmission in neutral and advance the throttle
control to slightly open.
A CAUTION:
Make certain the transmission is in neu-
tral. starting in gear could result in serious damage to
your transmission, your boat, and vessels nearby.
Turn the KEY SWlTCH to the ON position (2 o'clock)
PREHEAT: Depress the PREHEAT switch. The voltmeter and
panel lights, gauges and meters will be
aClivated.
The PRE-
HEAT switch should be depressed in accordance with the
following chart:
TemperatureJPreheat
Abnospheric Temperalure Preheating lime
+41°F(+5°C) or higher Approx. 10 seconds
+4n(+5°C) to 2n (-5°C) Approx. 15 seconds
+23°F(-5°C) or lower Approx. 20 seconds
Limit of continuous use 30 seconds before cranking
START: While still depressing the PREHEAT switch, depress
the START switch. This will engage the starter solenoid.
Upon engine starting, release the START switch. Do not
release the PREHEAT switch until the oil pressure reaches
15
psi.
Then as long as the high water temperature and low
oil pressure protective circuits do not activate, the engine will
remain energized and continue to run.
NOTE:
When starting:
A voltage drop will occur
when the preheat switch
is depressed.
VOLTAGE
DROP
Should the engine not start when the START switch is
depressed for 10 to 20 secol!ds, release both switches and
wait 30 seconds; repeat the procedure above and preheat
longer.
Never run the starter lor more than
30
seconds.
8
ACAUTloN:
Prolonged cranking intervals without the
engine starting can result in the engine exhaust system
filling with raw water. This may happen because the
pump is pumping raw water through the raw water cool·
ing system during cranking. This raw water can enter the
engine's cylinders by way of the exhaust manifold once
the exhaust system fills. Prevent this from happening by
closing the raw water supply through-hull Shut-off,
draining the exhaust muffler, and correcting the cause
of the excessive engine cranking. Engine damage result-
ing from raw water entry is not
a
warrantable issue; the
owner/operator should keep this in mind.
Once the engine starts, check instruments for proper oil pres-
sure and battery charging voltage.
NOTE:
Never attempt to engage the starter while the engine is
running.
NOTE:
Some unstable running may occur in a cold engine.
Depressing the Preheat switch/or /0-/5 second intervals 'will
help stabilize the engine RPM until the operating tempera-
ture reaches J70o-190°F (77°_88°C) and a propeller load
is
applied to the engine. When the engine
i~'
running and the
preheat switch is depressed, a charging load on the
DC
alter-
nator will be discernible.
STARTING UNDER COLD CONDITIONS
Make certain the lubricating oil confonns with the ratings for
the prevailing temperature. Check the table on the engine oil
section of this manual.
The battery should be fully charged to minimize voltage
drop.
Use a sufficient amount of preheat to aid in starting, see
Temperature/Preheat chart On this page.
STOPPING PROCEDURE
To stop the engine, bring the throttle to an idle position and
place the transmission in neutral. Allow the engine to idle for
a few moments to stabilize temperatures. Pull the STOP lever
to shut down the engine. Then turn OFF the key
10
close
down the electric fuel pump and accessories.
Made certain the key switch is in the OFF position (12
o'clock). If the Key Switch is left ON. the battery will diS-
charge. An engine alarm buzzer is provided to warn the oper-
ator of this condition (Key Switch ON). The best method of
preventing the battery from discharge is
to
remove the key
from the Key Switch after stopping the engine.