Cylinder Head knock-down and fix on

Cylinder Head backout:Give engine cooling water out.Backout all the accessories of Cylinder Head.
Dismantle Cylinder Head screw cap from the both sides symmetrically.Take out Cylinder Head and Cylinder gasket.
If it's difficult to take Cylinder Head down,percuss Cylinder Head by using a numb hammer or rocking-turn crank.
Utilizing Cylinder inner gas heat to impact Cylinder Head.Also may revolve old spark plug soldering gripe into spark plug seat hole,so that it's easy to knock down.
Fix and restore Cylinder Head:Slick side of Cylinder gasket should be fixed to Cylinder body.Bofore fixing you should check over if there is any swag in Cylinder body.
Screw cap or bolt of Cylinder Head should be screwed from middle to both ends at twice in order not to metamorphose the Cylinder Head.
Cast iron Cylinder Head should be tightened before heat engine and after cold engine each.