33
Chapter 4
ENGINE DESIGN
The motorcycle is equipped with a two-cylinder four-stroke air-cooled en gine. The opposed
arrangement of cylinders in the horizontal plane is the outstanding feature of the mo tor cy cle design
which ensures proper cooling and balancing of the crank gear. The engine valves are lo cat ed in the
cyl in der heads.
In summer, carefully observe the heating condition of the engine, power trans mis sion units and the run-
ning gear mechanisms. Under normal heating con di tions of the engine, the tem per a ture of the cylinder
heads should not be over 356°F-428°F/180°C-220°C.
During everyday preventive maintenance, clean the engine of mud and dust, paying special
attention to the cooling fi ns as their fouling will impair the effi ciency of the en gine cool ing. Check en-
gine crankcase, cylinders and cyl in der heads for oil and fuel leaks. Check carburetor to cylinder head
compliance fi ttings for any cracks or leaks. Visually inspect the alternator for any oil leaks.
33
Chapter 4
ENGINE DESIGN
The motorcycle is equipped with a two-cylinder four-stroke air-cooled en gine. The opposed
arrangement of cylinders in the horizontal plane is the outstanding feature of the mo tor cy cle design
which ensures proper cooling and balancing of the crank gear. The engine valves are lo cat ed in the
cyl in der heads.
In summer, carefully observe the heating condition of the engine, power trans mis sion units and the run-
ning gear mechanisms. Under normal heating con di tions of the engine, the tem per a ture of the cylinder
heads should not be over 356°F-428°F/180°C-220°C.
During everyday preventive maintenance, clean the engine of mud and dust, paying special
attention to the cooling fi ns as their fouling will impair the effi ciency of the en gine cool ing. Check en-
gine crankcase, cylinders and cyl in der heads for oil and fuel leaks. Check carburetor to cylinder head
compliance fi ttings for any cracks or leaks. Visually inspect the alternator for any oil leaks.
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