The hydraulic clutch linkage in your vehicle is self-adjusting. This system does not have its own reservoir. It receives fluid from the brake master cylinder reservoir.
See Brakes on for more information.
Chevrolet 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
...