A1 9
FIG.
5.
FUEL FILTER
A
-
Bleed screws
B
-
Replacable element
FIG.
6.
HIGH PRESSURE LIFT PUMP (ALL TURBO ENGINES)
FIG.
7.
I
/J
FUEL LIFT PUMP
-
(ALL N.A. ENGINES)
A
-
Priming lever
Timing and Maintaining
the
Fuel Injection Pump
The injection pump delivers an accurately metered quantity of fuel to each cylinder
to
suit any engines speed and
load conditions. The pump is a very accurately machined piece of equipment and requires careful handling and
maintenance, which is beyond the scope of normal owner servicing. Since this pump should not require
retiming
except when being removed and reinstalled, dnd this is beyond the scope of normal owner servicing, the procedure
will not be covered in this manual. Please contact your authorized Lehman Power distributor for this service.
Warranty claims resulting from owner mishandling of the fuel injection pump will not normally be considered.
Cooling System
Your engine is cooled by the circulation of fresh water (contained in the system) through the water jackets surrounding
the cylinders, cylinder head and exhaust manifold. The heated water flows by
thermo- syphonicaction, assisted
by a pump at the front of cylinder block around the tubes of a “heat exchanger” located above the fuel lift pump on
the starboard side
of
the engine. Raw water from outside the boat flows through the heat exchanger tubes, and
the heat from the fresh water is thus transferred to the raw water which is expelled overboard. Please see Figures
8
and 9. A Thermostat located in.the cylinder head under the expansion tank on naturally aspirated units and in a
separate unit on the starboard side of the turbo charged units promotes rapid warm up and maintains constant
engine temperatures.
The fresh water system is filled through a cap atop the expansion tank at front
of
engine. Water level should be
checked daily and maintained
to
the top of the aluminium pillar. These engines are fitted with a cooling system
de- airation service and no bleeding of the manifold is required during system filling.
When filling cooling system, fill
to
top of aluminium pillar, then run engine for several minutes
to
insure system is
completely filled. Add coolant as necessary.
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