Page 14 - NSU Supermax Owner's Manual

Lubrication of the Engine Breathing
The pressure built up in the crankcase when the 'piston
is by means of the dry-sump system.
descends is relieved through passages drilled in the right­
hand crankshaft and in the crankcase leading to the rear
In this system the double gear pump comprises a scaven­ of the engine.
ging and a pressure pump. The scavenging pump has a
higher capacity than the pressure pump so that the oil The Carburettor
returning from the points of lubrication cannot accumulate is a Bing two-slide ca~burettor.
at the pump, but is returned to the oil tank. The oil passes
The control cables that operate the carburettor are ad­
through a filter on its way from the tank to the pressure justed .at the twist grip and the air control lever on the
pump, where it recommences its cycle. right hand side of the handlebars.
The wet air filter is so arranged that the air IS drawn
The oil for lubricating the crankshaft is forced by the in from the frame and enters the filter 10 a steady
pump through passqges drilled in the left-hand crank­ stream i there is practically no suction noise.
shaft, the left-hand flywheel, and the crank pin, to the
big-end bearing.

The cylinder walls and the gearbox are lubricated by
oil thrown off from the crankshaft assembly.

For lubricating the valve mechanism passages are pro­
vided in the crankcase, cylinder, and cylinder head which
lead the oil directly to the individual lubrication points.
The dipstick in the oil tank is provided with two notches
the cap of the oil tank.

-The return flow of the oil can be observed by removing
which indicate the maximum and minimum oil levels.
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