1. Rotate the reamer clockwise the full length of the valve guide bore.

1. Continue to rotate the reamer clockwise while drawing it from the bore.

1. Thoroughly wash the guide in detergent and water to remove any cutting residue.

1. Check the clearances with a valve. Verify that a valve slides in the intake and exhaust valve guides without being stuck.

1. Inspect the valve seating, if necessary, renew the valve seat using a valve seat cutter.