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 ...

Exhaust Pipe and Muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration, or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace part ...

HEATING AND VENTILATION
1. Temperature control 2. Air conditioning switch (If Installed) 3. Air intake control switch 4. Air flow control 5. Fan speed control Fan Speed Control This is used to turn the blower fan o ...