The tachometer displays the engine speed in revolutions per minute (rpm).
Notice: If the engine is operated with the tachometer in the shaded warning area, the vehicle could be damaged, and the damages would not be covered by the vehicle warranty.
Do not operate the engine with the tachometer in the shaded warning area.
Speedometer and Odometer
Safety Belt RemindersChevrolet Cobalt Service & Repair Manual. Valve Spring Replace
This procedure is designed to
replace valve spring while head is attached to engine.
1.
Install a suitable flywheel holding
tool in order to prevent crankshaft rotation.
2.
Remove applicable spark plug from cylinder
...