Linhai T-Boss 550 Service Manual page 119

CHAPTER 3 ENGINE
1st and 2nd rings have letter "R" marked on the side.
Be sure to bring the marked side to the top when
fitting them to the piston.
Position the gaps of the three rings as illustrated on
the right. Before installing the piston into the cylinder,
check that the gaps are so located.
Apply a light coat of moly oil to the piston pin;
Install piston pin into holes of piston and conrod
small end.
Note: When installing the piston, the "IN" mark on piston
top is located to the intake side.
Place a clean rag beneath piston and install piston
pin circlip ①
Note: while rotating crankshaft, pull the cam chain
upward, or the chain will be caught between sprocket
and crankcase.
Install the dowel pins and the new cylinder gasket;
Note: Use a new cylinder gasket to prevent oil leakage
T-Boss550 SERVICE MANUAL20.0
CHAPTER 3 ENGINE PAGE. 3- 94