Tools Required

Important: 

•	Before you remove the valve locks, rotate the engine so that the piston in the cylinder you are working on is at (TDC) top dead center. This will eliminate the possibility of the valve accidentally falling inside the cylinder.

•	Break the spark plug loose, and clean any dirt and debris from the spark plug recess area before removing.

•	Do not remove the spark plug when the engine is hot.

1. Remove the spark plug. Refer to Ignition System.
2. Install J 22794 into the spark plug port. Apply compressed air in order to hold the valves in place.
3. Remove the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .



4. Compress the valve spring with J 38606 .



5. Remove the valve locks.
6. Remove the valve cap.
7. Remove the valve spring.
8. Inspect the valve spring for damage. Replace the spring if it is damaged.
9. Remove the spring seat/valve stem oil seal.

Tools Required

1. Install the valve stem oil seal/spring seat.

•	Use a suitable driver.

•	Press over the valve guide boss.

2. Install the valve spring.
3. Install the valve cap.



4. Compress the valve using J 38606 .
5. Install the valve locks. If necessary, hold the valve locks in place with grease.
6. Release the valve spring.
7. Make sure that the valve locks are seated.
8. Install the valve rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .
9. Release the air pressure and remove J 22794 .
10. Install the spark plug. Refer to Ignition System.