Instrument; Tachometer - Tayana -48 Owner's Manual

（3） Marine Growth
In order to obtain maximum speed, the bottom of the boat
must be kept free of marine growth, including moss. Any growth
on the boat's bottom will significantly increase the resistance of
the boat as it move through the water and thus decreased the
speed. The use of a good anti fouling paint is advised.
（4） Damage Underwater Equipment
Loss of speed and excessive vibration can result from
damaged propellers, shaft or struts. If it occurs have this
investigated immediately.
With normal care and maintenance, the engine will maintain
peak efficiency. However, if they are neglected, the power will
fall off and expensive repairs may become necessary.

3.14 Instrument

Engine Instrument
Your TAYANA48DS has several sets of performance gauges
mounted on the instrument panel. These gauges will help you
aware of the statue of the engine system. Please refer to
"Engine Operation and Maintenance Manual " for detail.

3.15 Tachometer

The tachometer indicates the engine speed in revolutions per
minute (RPM). This is the most important instrument fitted to the
boat. You should set your running speed with reference to the
RPM. You will have a continuous indication of the efficiency of
your engines and propellers.
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