Joyner JNSZ1600QL, Owner'S Manual

Page: 52 / 215

51
Fig.47 Fig.48(A dowel B cyclinder head gasket)
Cylinder head bolts removal
：
——Rotate camshaft until keyway is rightly upside.
——Loosen cylinder cover bolts in order as specified in diagram.
——Note
：
Cylinder cover bolts must be replaced after removed and are not
permitted to reuse.
Cylinder head assembly reinstallation
：
——Check whether cylinder head contact surface roughness is 0.15mm or less.
——Clean the tapped holes in cylinder block
，
there should not be deposits in tapped
hole
，
or fluid pressure resulting from bolts screwing may possibly results in cylinder
block cracking.
——Rotate crankshaft until no.1 cylinder piston is 20mm or so under the deck of
cylinder block to keep the valves in cylinder head assembly from contacting piston
head.
——Match cylinder head gasket with dowels. Note
：
For cylinder head gasket mark, 1
teeth indicates 480 ,and position cylinder head gasket with part number side upside.
——Install cylinder head into place with camshaft keyway perpendicularly downward. Note
：
Cylinder
head gasket may only be used once
，
gasket should be replaced if cylinder head is removed.