To clean debris from the valves, remove both cylinder head screws. The cylinder head and
manifold body will separate. Check and clean for debris on both the valve seat and piston seal
face.
To re-assemble, verify the manifold body o-rings are in place, replace the cylinder head on the
manifold, (pins will aid in alignment). Tighten the cylinder head screws, making sure not to over
tighten or strip the screw. The cylinder head should be flush to the manifold body.