Welcraft 232 Coastal, Owner'S Manual

Page: 21 / 98

Always monitor the oil level in the remote tanks before
each cruise by checking the gauge or indictor lights in
the helm (not available on all engine installations) or
visually checking the oil level using the reference marks
on the tanks.
When additional oil is needed, use only the type of oil
specified by the engine manufacturer. Refer to the
engine owner’s manual for oil specifications and
additional information on the oil injection system.
Note: Always monitor the oil level in the tanks
and only use the type of oil specified by
the engine manufacturer.
4-cycle outboard engines have an oil sump in the
crankcase that must be kept full of the type and grade of
oil recommended by the engine manufacturer. It is
normal for 4-cycle engines to consume a small amount of
oil. Therefore, the oil must be checked before each use
and changed at regular intervals as instructed by the
engine owner’s manual. As with 2-cycle engines, use only
the type of oil specified by the engine manufacturer.
1.4 Engine Cooling System
Outboard engines are raw water (seawater) cooled.
Water is pumped through the water inlets, circulated
through the engine block, and relinquished with the
exhaust gases through the propeller hub. The pump uses
a small impeller made of synthetic rubber. The impeller
and water pump cannot run dry for more than e few
seconds. In most outboard motors, some cooling water is
diverted through ports below the engine cowling. This
allows the operator to visually check the operation of the
cooling system. When the engine is started, always
check for a steady stream of water coming out of those
ports.
Note: If the boat is used in salt or badly
polluted water, the engines should be
flushed after each use. Refer to the
engine owner’s manual for the proper
engine flushing procedure.
1.5 Propellers
The propellers convert the engine’s power into thrust.
They come in a variety of styles, diameters and
pitches. The one that will best suit the needs of your
Wellcraft will depend somewhat on your application
and expected average load. Propeller sizes are
identified by two numbers stamped on the prop in
sequence. The 1
st
number in the sequence (example
14 x 21) is the diameter of the propeller, and the 2
nd
number is the pitch. Pitch is the theoretical forward
distance traveled by the boat in each revolution of the
propeller.
Always repair or replace a propeller immediately if it
has been damaged. A damaged and therefore out of
balance propeller can cause vibration that can be felt
in the boat and could damage the engine gear
assembly. Refer to the engine owner’s manual for
information on propeller removal and installation.
21