10
OL944D 11/13
5. If the proper propeller is used, the engine should
reach its appropriate maximum RPM’s at full throttle
(2500 RPM). If the maximum rated RPM’s for your
engine application are exceeded at full throttle, then
your propeller is too small. If you cannot reach your
maximum rated RPM’s at full throttle, etiher your
propeller is too large or bottom growth is slowing
the boat.
6. To establish Maximum Cruising RPM: Establish
th RPM at full throttle and subtract 200-300 RPM.
This will promote engine life and reduce fuel
consumption.
SHUTDOWN
1. Run the engine for a three to five minute cool-down
period in neutral at 1000 RPM.
2. Return engine to low idle.
3. Turn the key switch counter clockwise as far as
possible to stop the engine.
4. Close the sea cock and fuel valves and put the
battery switch in OFF position.
Note: Do not turn the battery switch to OFF while
the engine is running.
ALARMS
1. Your unit is fitted with a warning system to indicate
high water temperature and low oil pressure.
Propulsion engines have warning horns to sound and
warn you of a problem.
Note: When the engine is not running the horn will
sound when the key is in the “on” position because
there is no oil pressure.
Do not rely on the alarms to the exclusion of
careful gauge monitoring. Checking the gauges
could prevent damage to the unit and dangerous
power losses.
Operating Procedures
STARTING
1. Put the gear control in the neutral position.
2. Move the throttle control to the full speed postion
and return back to idle.
3. Turn the key switch to the first position. Check the
voltage meter to see the condition of the batteries.
For starting, the voltmeter should not read below 12
volts. (24 volts for 24 volt systems.)
4. Turn the key to the next position; preheat for 5 to 10
seconds. Then turn the key to the starting position
and as soon as the engine starts, release the key.
Move the throttle up until the engine is running at
approximately 1000 RPM.
5. Do not crank the starter for more than 15 seconds
consecutively. If the engine fails to start with the
first attempt, be sure that the starter has stopped
completely before re-engaging.
Note: Never race a cold engine. Operate at 1000
RPM for a 3 to 5 minute warm-up period.
OPERATING
1. Check the oil pressure as soon as the engine has
started. Oil pressure must be above 15 PSI. The
engine must never be run if the oil pressure is below
15 PSI.
2. The D.C. voltmeter should read between
13 and 14 volts at 60° F (16° C) ambient temperature.
(26 to 28 volts for 24 volt systems.)
3. The water temperature gauge should not rise above
200° F (94° C). If it does, shut down the engine and
investigate the cause of overheating.
4. Do not exceed 800 RPM when shifting marine gear.
Repeated shifts at higher engine speeds can damage
the reverse gear.
