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11.
INSTALLATION
Engine life, ease of maintenance and inspection, frequency of checks and repairs, and operating
cost all depend
on
the way
in
which the engine is installed. Review
the
following instructions
carefully for installing the engine.
11
-
1
INSTALLING
When mounting the engine, carefully examine its position, the method of connecting it to a machine,
the foundation,
and
the mehtod
of
supporting the engine.
When determining its mounting position, in particular, make sure that gasoline and oil can easily
be
supplied and checked, the spark plug can easily
be
checked, the air cleaner can easily be serviced,
and that the oil can easily be discharged.
11
-
2
VENTILATION
Fresh
air
is necessary for cooling the engine and burning the fuel.
In
the case the engine is operated under a hood
or
in a small
room,
temperature rise in the engine
room
can
cause vapor lock, oil deterioration, increased oil consumption, loss
of
power, piston seizure,
shorter engine life, etc., making it impossible to operate the engine properly. It is necessary,
therefore, to provide a duct
or
baffle to guide cooling air to the engine
to
prevent recirculation
of
he hot air used for engine cooling, and temperature rise of the machine.
Keep the engine room temperature below 50°C even in the hottest period
of
the year.
11
-
3
EXHAUST
GAS
DISCHARGE
Exhaust
gas
is
noxious. When operating the engine indoors, be sure to discharge
the
exhaust gas
outdoors. If
a
long exhaust pipe
is
used in such a case, the internal resistance increases causing
loss of engine power. Thus pipe inside diameter must be increased in proportion to exhaust pipe
length.
Exhaust pipe :Less than
3m
long, pipe inside diameter
30mm,
Less than 5m long, pipe inside diameter 33mm.
11
-4
POWER
TRANSMISSION TO
DRIVEN
MACHINES
11
-4-
1
BELT
DRIVE
Take the following notes into consideration.
*
V-
belts are preferable to flat belts.
*
The driving shaft of the engine
must
be parallel to the driven shaft of the machine.
*
The driving pulley of the engine must be in line with the driven pulley
of
the machine.
*
Install the engine pulley as close to the engine as possible.
*
If possible, span the belt horizontally.
*
Disengage the load when starting the engine.
If
no clutch
is
used, use a belt tension pulley
or
the like.
11
-4-2
FLEXfBLE
COUPLING
When using a flexible coupling, runout and misalignment between the driven shaft and engine
shaft must be minimized. Runout and misalignment tolerance are specified
by
the coupling
manufacturer.
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