PROCEDURE
REPAIR VALVE SPRING SEAT
| *a | 1.0 to 1.4 mm (0.0394 to 0.0551 in.) |
If the seating is too high on the valve face, use 30° and 45° cutters to correct the seat.
| *a | 1.0 to 1.4 mm (0.0394 to 0.0551 in.) |
Intake Side:
If the seating is too low on the valve face, use 60° and 45° cutters to correct the seat.
| *a | 1.0 to 1.4 mm (0.0394 to 0.0551 in.) |
Exhaust Side:
If the seating is too low on the valve face, use 75° and 45° cutters to correct the seat.
Hand-lap the valve and valve seat with an abrasive compound.
After lapping the valve by hand, clean the valve and valve seat.