1. Using a special tool (09221-3F100A) remove the valve guides from the cylinder head.
2. Bore a hole in the cylinder block for a new repair size to press on a new guide bushing.
3. Using a special tool (03221-3F100 A/B), press in the valve guide. The guide sleeve must be pressed through the top of the cylinder head. Note that the intake and exhaust valve guides are different lengths (intake 39 mm, exhaust 43 mm).
4. After pressing the guide bushing in, insert a new valve and check the gap between the valve stem and the guide bushing as described above.
5. After replacing the guide bushing, make sure the valve is firmly seated in the seat. If necessary, bore out the valve seat.