CHAPTER 3
PROPULSION SYSTEM
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34z
3.0
PROPULSION SYSTEM
3.1 GENERAL
Your 40z is propelled by twin QSD4.2 320 HP Cummins diesel engines
with Mercruiser Bravo 3x Outdrives. There are 3 Operating Manuals
CUMMINS ENGINE OPERATING AND MAINTENACE MANUAL (EOM)
CUMMINS OWNER’S MANUAL FOR SMARTCRAFT (SOM) Shows Control Levers on Cover
MERCURY OWNER’S MANUAL FOR SMARTCRAFT (MOM) Plain Black
Rather than try to duplicate the excellent instructions in each, this MJM Owner’s Manual will refer
to the appropriate pages in the following manner: See “EOM 22-23” meaning Engine Operating
Manual, pages 22-23.
Engines are accessed by raising the cockpit hatch using the electric lift black toggle switch on the
outboard wall inside the starboard cockpit seat locker.
NEW ENGINE BREAK-IN (See EOM 38-39)
While
running the engine for the first time and after shut-
down, check for proper engine oil pressure, diesel fuel
leaks, engine oil leaks, coolant leaks, proper operation
of the indicators and gauges, proper exhaust color,
engine vibrations and sounds, If temperature is high
(a) Is the raw water intake seacock properly open (b)
Are the raw water strainers clogged?
RAW WATER
INTAKE STRAINERS
See EOM 55-127 for
detailed description of
components.
COOLANT CAPS
OIL DIPSTICKS
(under panel)
DRIVE LUBE RESERVOIRS
(under engine top covers)
