Order of execution
1. Using the valve guide installer, press the valve guide out of the cylinder head towards the cylinder block.
2. Attach a new oversized valve guide to the cylinder head bore.
3. Using the valve guide installer 09221-22000, press the valve guide into the cylinder head. The device ensures that the bushing is pressed to a strictly defined depth. Measure the protrusion of the top of the valve guide from the cylinder head. Note that valve guide protrusion is different for inlet (47.2 mm) and graduation (39.1 mm) valves.
4. After pressing in the valve guides, insert the new valves and check the clearance.
5. Check and, if necessary, replace the valve seats each time the valve guides are replaced.