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5.
INSTALLATION
Since the installation method affects the service life, ease of maintenance, frequency of check and reapir, and operating
costs
of
engine, the following contents should be carefully examined before installing your engine.
For details, refer to the separate “SALES MANUAL”-Engineering Information-.
5-1
MOUNTING
When installing the engine, its mounting position, coupling conditions with operating machines, and anchoring
or
supporting
methods must be carefully examined. Particularly when determining its mounting position, due care should be taken to
assure the convenience of such routines as replenishment and checking
of
fuel and oil, checking
of
spark plug and breaker
points, maintenance
of
air cleaner, and oil drainage.
5-2
VENTILATION
The engine must be supplied with .fresh air for cooling and fuel combustion.
If
engine is operated with a cover
or
in
a small
room, the engine room is heated, causing vapor lock, deterioration of oil, increase of oil consumption, power reduction,
seizure,
loss
of engine life, and thus proper engine operation can be expected
no
longer.
It is therefore necessary
to
provied a cooling air duct and a baffle plate for the purpose
of
preventing insufficient circulation
of heated air after cooling engine and or temperature-rise of operating machines.
The temperature
of
engine compartment should be kept below 4OoC even in mid-summer.
53
EXHAUST GAS EVACUATION
Since the exhaust gas from engine is toxic, it must be exhausted outside if engine is operated indoors.
As
the output power
of
an engine is considerably influenced by the length of exhaust duct, its diameter must be increased in
proportion to its length.
5-4
FUEL SYSTEM
When fuel tank is separated from engine, it must be located
so
that its bottom surface lies within 5-50cm
(2”-20”)
above
the fuel joint
of
carburetor.
If
the fuel tank
is
installed too low, fuel is not fed properly, and if it is too high, the carburetor
may overflow.
For fuel piping, carefully examine it for heat conductivity, diameter, bending, and leakage through fittings
so
as to eliminate
air lock and vapor lock.
It
is recommended
to
minimize piping length. The standard
ID
of
fuel pipe is 4-5mm
(5,2”-13/64“).
5-5
POWER
TRANSMISSION
to
DRIVEN
MACHINES
5-5-1
BELT
DRIVE
Be
careful with the following items.
*Ilse a V-belt rather than a flat belt.
*Set the driving shaft of engine and the driven shaft
of
driven machine in paralled with each other.
*Align the driving pulley
of
engine and the driven pulley
of
driven machine correctly with each other.
*Mount the driving pulley
as nearer to the engine as possible.
-8-