See also:

Check Spark Plugs and Ignition System
Inspect your spark plugs and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way. ...

Tire Chains
Tire chains, if necessary, should be installed on the front wheels. Be sure that the chains are installed in accordance with the manufacturer's instructions. To minimize tire and chain wear, do ...

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 ...