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7. 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 .
7-1 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 .
7-2 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 .
7-3 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 .
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