Hitachi EX20UR-2 Manual page 320

W05-02-04
ENGINE/Engine
Head cover
Packing
Shim
Tappet
Gasket
Inlet
manifold
Exhaust
manifold
Cam bracket
Camshaft
Cylinder head
Head bolt
Gasket
3KR2 models
The encircled numbers indicate disassembly steps.