Precautions - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

Precautions

Always disconnect battery cables from battery before working around electrical
system components to prevent injury to yourself or damage to electrical system.
Avoid short circuits. It may be necessary to remove instrument panel from dash-
board to gain access to instruments and switches. Do not allow wires to come in
contact with metal or other wires.
Switch and sender testing involves the use of intense heat. Failure to follow
appropriate procedures or warnings can cause burns which can result in severe
personal injury. While performing the following test, observe these general
precautions:
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Use only clean, dry sand such as used for general sandblasting purposes. Use of
sand containing contaminants could result in hazards such as fire, short circuiting,
hot-spots or other hazards.
90-860074--1 FEBRUARY 2002
Wear personal protective clothing such as rubber gloves, a non-flammable
apron and eye protection - preferably full face shield or safety glasses.
The appropriate heat source should only be electric. Heat source should be
operated by a qualified person. Follow all instructions of the manufacturer of
the heat source. The heat source should be checked each time it is used to
ensure it is functioning properly.
The thermometer used in the test should be a high- temperature thermometer
with a maximum reading of at least 150°C (300°F). Under no circumstances
should the operator allow temperatures to exceed test specifications.
Perform test only in a well ventilated area.
Use a suitable container, such as metal, to hold the sand. Avoid use of glass
containers unless the operator first confirms for himself/herself that the
glass container is an appropriate high-temperature vessel.
Because the components will reach high temperatures Do NOT handle mate-
rials or components until COMPLETELY cooled.
WARNING
CAUTION
WARNING
WARNING
INSTRUMENTATION
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