Tiara Yachts C49, Owner'S Manual

Page: 26 / 152

Section 1 Propulsion Systems
1-2
43 LS
1.3 Engine Lubrication
Four-cycle engines have an oil sump in the
crankcase. Use the oil type, grade, and level
recommended by the engine manufacturer.
It is normal for 4-cycle engines to consume a
small amount of oil. Check the oil level before
each use and change it following the engine
manufacturer’s recommendation.
Refer to section 3, Fuel Systems, and the
engine owner’s manual for oil specifications
and additional information on the oil injection
system.
NOTICE
!
Use only the oil recommended by the
engine manufacturer, and monitor the
oil level. The use of any other type
of oil can cause severe damage or
engine malfunction.
1.4 Engine Cooling System
Outboard engines are raw water (sea water)
cooled. Water is pumped through the water
inlets, circulated through the engine block,
and expelled with the exhaust through the
exhaust port, water port and propeller hub.
The water pump uses a small impeller made
of synthetic rubber. The impeller and water
pump cannot run dry for more than a few sec-
onds. In most outboard engines, some cool-
ing water is diverted through the ports below
the engine cowling. This allows the operator
to visually check the operation of the cooling
system. When the engine is started, make
sure a steady stream of water is present.
If the boat is used in salt or badly polluted
water, flush the engines after each use to
reduce corrosion. Refer to your engine pack -
age owner’s manual for the proper engine
flushing procedure.
CAUTION
!
DO NOT operate an engine out of the
water, even momentarily. Water must
be supplied to the cooling system
of the power head and water pump,
or serious damage will result. If it is
necessary to run the engine out of the
water, connect it to an engine flush
attachment designed for your specific
engine.
1.5 Engine Flush System
Your boat is equipped with an automatic
engine flush system, installed in the mechan -
ical space. The system provides a freshwater
flush to each outboard motor in a sequence.
See the Reverso
®
Automatic Outboard Flush -
ing System owner’s manual for more infor-
mation.
To flush the engines:
1. Connect the provided adapter to a fresh-
water hose.
2. Insert the adapter into the Reverso hose
connection, located on the transom just
forward of the starboard engine.
Engine flushing system hose connection
3. Press the start button on the engine
flushing system unit, installed in the star -
board aft mechanical space.