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11. INSTALLATION
Engine life, ease of maintenance and inspection, frequency of checks and repairs, and operating cost
are 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
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 5 m long, pipe inside diameter 33 mm.
NOTE:Fit safety covers to the exhaust pipe and to the muffler.
11-4 FUEL SYSTEM
If the fuel tank removed from the engine, set the height of the bottom of fuel tank and the fuel joint of
carburetor to a level between 5 cm and 50 cm.Pay attention that the too low level of fuel tank allows fuel
not to be supplied and the too high may cause the carburetor overflow.
When piping, in addition, pay attention to the pipe for its heat transfer thickness, bend and leaking
in joints to prevent air-lock and vapour-lock.And length of the pipe should be as short as possible.
Содержание EY15-3
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