PURSUIT 2470 CENTER CONSOLE Owner's Manual download pdf (Page 19)

2470 CENTER CONSOLE

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 (sea water) cooled. Water is pumped through the water inlets,

circulated through the engine block, and relinquished with the exhaust gases through the

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 seconds. In most outboard motors, some cooling

water is diverted through small 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.

NEVER RUN AN OUTBOARD MOTOR WITHOUT WATER FLOWING TO THE WA-

TER PUMP. SERIOUS DAMAGE TO THE WATER PUMP IMPELLER OR ENGINE

COULD RESULT.

Note: If the boat is used in salt or badly polluted water, the engine(s) should be flushed

after each use. Refer to the engine owner’s manual for the proper engine flushing

pro-cedure.

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 Pursuit will depend somewhat on your

application and expected average load. Propeller sizes are identified by two numbers stamped

on the prop in sequence. The 1st number in the sequence ( example 14 x 21) is the diameter of

the propeller and the 2nd number is the pitch. Pitch is the theoretical distance traveled by the

propeller in each revolution. 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.

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PURSUIT 2470 CENTER CONSOLE Owner's Manual Page 19