Crankcase gases are sucked off through hose 1 (pic. 2-75) into the intake pipe hose, and then through the throttle pipe and receiver into the intake pipe.
At low crankshaft speeds, with the throttle valve closed, the bulk of the crankcase gases are sucked off through hose 2 into the throttle pipe.
To flush the system, remove hose 1, cover 5 of the oil separator and wash them with kerosene or white spirit.
Blow out the inlet pipe hose connection.
Pic. 2-75. Engine crankcase ventilation scheme:
1 - exhaust hose;
2 - gas outlet hose;
3 - throttle pipe;
4 - oil level indicator;
5 - oil separator cover;
6 - oil pressure sensor;
7 - gasket;
8 - oil separator.