URAL Motorcycles 2003 Retro Solo, Owner'S Manual

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Chapter 4
ENGINE DESIGN
The motorcycle is equipped with a two-cylinder four-stroke air-cooled engine. The opposed ar-
rangement of cylinders in the horizontal plane is the outstanding feature of the motorcycle design
which ensures proper cooling and balancing of the crank gear. The engine valves are located in
the cylinder heads.
In summer, carefully observe the heating condition of the engine, power transmission units and the
running gear mechanisms. Under normal heating conditions of the engine, the temperature 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 atten-
tion to the cooling fins as their fouling will impair the efficiency of the engine cooling. Check en-
gine crankcase, cylinders and cylinder heads for oil and fuel leaks. Check carburetor to cylinder
head adapter for any cracks or leaks. Visually inspect the alternator for any oil leaks.