Pressure timing & duration

Best care must be taken to set up pressure nipple on the crankcase near intake hole of the shaft. In the beginning stage of this system, pressure timing was withdrawn making use of import hole of the crank shaft directly, so the angular duration was around 110 degree. But, in such a condition, the system had malfunction of regulating especially the phenomena that slow to high, middle to high operation, some limpy action happened. After some experimental trials in the factory, it was possible to provide an reliable highest pressure signal by setting a additional groove near the hole only for the purpose.
As a matter of fact, the pressure working angle 55 degree between 105 ATDC and 160 ATDC was set as a normal angular value by the factory.
After establishment of this principle, only the highest pressure signal is effective for regulating pressurized fuel flow, no crazy reactions happened that had been gathered bad reputations.
Also, the value is not mattered by the displacement of the motor, so any other company made motors can be brought for this system, if the basic requirements might be fulfilled.
Consequently, the pressure timing and the working angle should be followed in the best precision if YS regulator system is invited and comfortable operation is desired.
Anyway, setting nipple on the front housing and engraving cavity on the crank shaft with the best concentration  are the shoulder-stick work every time.