PURSUIT 3070 EXPRESS Owner's Manual download pdf (Page 21)

3070 EXPRESS

Note: Always monitor the oil level in the tanks and only use 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 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 IMPELLER OR ENGINE COULD

RESULT.

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 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.

1-3

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 168 169

No comments

PURSUIT 3070 EXPRESS Owner's Manual Page 21