Edgewater Networks 388CC, Owner Assistance Manual

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Do not paint your outboard’s lower units with paints designed for boat hulls. Some can
cause severe damage to your engine. Check with your engine manufacturer to get their
recommendation.
Do not attempt control adjustments unless you are very familiar with their function, operation
and adjustment. Failure to properly adjust the system components can adversely affect your
boat’s performance and safety. Mis-adjustment can also cause severe control, engine or lower
unit damage.
Please return all warranty cards for boat, engines and other related items. This will assist
you in the event you have a warranty problem.
3.2 Engine Cooling System
Most outboard engines are cooled by water taken in through ports in the lower part of the drive
section. Make sure these ports are free of debris or other items that might cause the flow to be
restricted. Maintain a routine vigilance to see that the visual inspection streams have a steady
flow of water. If they do not, shut down the engine to see if they are clogged or if there is a more
serious problem. Be especially watchful if you have gone through an area of vegetation or
shallow water as the intake ports can become clogged with weeds, dirt or other debris.
Do not run your outboards without water coming into the lower unit. The water pump
impellers can be damaged in only seconds of this type of operation.
3.3 Propellers
A turning propeller moves the boat through the water, forward or backward. They should
always be clean and free from nicks or dings, which can adversely affect performance. Your
dealer can assist you in the proper selection of a propeller for your boat. This selection is based
on the horsepower of the engine and its relationship to the size and weight of the boat.
Propeller sizes are determined by two numbers, which appear on different propellers at various
locations. They are listed in sequence, for example 13 x 17. The first number is the diameter of
the propeller and the second is the pitch. Pitch is the theoretical distance the propeller moves
through the water with each complete revolution, the larger the number the greater the theoretical
movement. It also follows that the larger the number the greater horsepower is required to turn it.
With a load which is “normal”, or usual for your boating activities, the engine should be able to
reach its maximum operating RPM range at wide open throttle (WOT) and full trim. With a light
load on smooth water, the engine should reach its manufacturer’s rated maximum operating RPM
at wide-open throttle (WOT) and maximum trim. If it does not, you may have a propeller that has
too much pitch. If it goes beyond the maximum recommended RPM range, you may have too
little pitch. Neither condition is good for the engine. You will get shorter engine life and poorer
performance than your boat and motor were designed to provide.
If your boat came from the factory with a propeller selected by EdgeWater Power Boats
LLC and Yamaha® Engineering, it should already be optimized for the performance of
your boat. Before changing the pitch or diameter of your propeller, always check with your
dealer to determine how the changes will affect your boat and engine performance. Certain
modifications such as bottom paint or options that affect weight balance and/or wind resistance
may lower peak rpm. Always check with your dealer first if optimum rpm cannot be attained.