See also:

HEATING CONTROLS
For normal heating operation, set the air intake control to the fresh air () position and the air flow control to the floor () position. For faster heating, the air intake control should be set ...

System operation
Ventilation 1. Set the mode to the position. 2. Set the air intake control to the outside (fresh) air position. 3. Set the temperature control to the desired position. 4. Set the fan speed contro ...

Crankcase Emission Control System
The positive crankcase ventilation system is employed to prevent air pollution caused by blow-by gases being emitted from the crankcase. This system supplies filtered fresh air to the crankcase th ...