TM 5-3810-307-24-1-2
Some units have a press-fit intake valve retainer. If
present, carefully remove it to prevent part damage.
Remove the intake valve.
Turn the head assembly over and set it on a clean
surface. Remove the center capscrew. This capscrew can
be re-used. Note that this capscrew is shorter than the
four corner capscrews.
Remove the cover, cover gasket, head and head gasket.
Remove the two wave washers, exhaust valve retainer
and exhaust valve. These wave washers must be
replaced.
12-22 Change-1