Valve to valve guide clearance
If the valve guides are worn beyond the service limit given below, the cylinder head must be replaced.
Valve stem to guide clearance
| Inlet | 0.010 - 0.040 mm |
| Service limit | 0.078 mm |
| Exhaust | 0.030 - 0.060 mm |
| Service limit | 0.098 mm |
Valve guides
If a valve guide is found to be worn beyond the service limit, the complete cylinder head must be renewed.