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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 method 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
n
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
3
m long
--
pipe inside diameter
30
mm
Less than
5m
long
---
pipe inside diameter
33
mm.
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.
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, run out and misalignment between the driven shaft and engine shaft must be
,--
minimized. Run out and misalignment tolerance are specified by the coupling manufacturer.
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58-