Yanmar 4jh3 te turbo 75cv,a che regime parte la turbina?

[kavokcinque]

(7) When operating the engine at low speed for long periods of time, race the engine once every 2
hours.
Racing the Engine
Morse Remote Control Handle
Pull out the handle lever (MT-3) or the free throttle button
(MV) and shift the engine speed from high t to low
several times.
→See 4.3.4(1)
Racing the engine removes carbon built up in the combustion
chamber and around the fuel injection valve.
Neglecting to race the engine will cause the exhaust to
turn black and lower the efficiency of the engine.