Ford 2003 Mustang Workshop Manual page 1204

5. Using the special tool compress the exhaust valve spring.
6. Remove the camshaft roller follower from the exhaust valve.
7. Repeat Steps 2, 3 and 4 to remove all the necessary roller followers. Inspect roller finger
followers and camshafts. For additional information, refer to Section 303-00 .
Installation
1. To install, reverse the removal procedure.