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. Carefully observe the following
instructions 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
VENTJLATION
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 the 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 FLEXIBLE
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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