Linhai HY510S Service Manual page 134

CHAPTER 3 ENGINE
Cylinder
Apply engine oil to piston skirt and cylinder wall;
Hold each piston ring with proper position, insert
piston into the cylinder;
Tighten the cylinder base bolts temporarily;
Note: When installing the cylinder and cylinder head,
pull the cam chain upward, or the chain will be caught
between sprocket and crankcase.
Install chain guide①;
Fit the dowel pin and new cylinder cover gasket;
Note: Use a new cylinder cover gasket to prevent oil
leakage
Cylinder Head
Install the cylinder cover, tighten the cylinder head
bolts diagonally to the specified torque.
Cylinder head bolt tightening torque: Initial: 25 N·m
Tighten the cylinder head nuts to the specified
torque;
Cylinder head nuts tightening torque:
M6: 10 N·m
M8: Initial 10 N·m
Final 25 N·m
Tighten the cylinder top nuts and cylinder base to
the specified torque;
Tightening torque: 10 N·m
Final: 40 N·m
LH500ATV-D SERVICE MANUAL14.0
CHAPTER 3 ENGINE PAGE. 3- 103