See also:

How to Inspect the Engine Air Cleaner/Filter
To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains covered with dirt, a new filter is required ...

Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). ...

English and Metric Unit Conversion
To change the display units between English and metric units, see Driver Information Center (DIC) for more information. ...