Engine (see Engine Removal/Installation chapter)
Cylinder Head (see Cylinder Head Removal)
Remove the cylinder.
If a new cylinder is used, use new piston ring.
Install the pins [A] and new cylinder gasket [B].
Apply engine oil to the cylinder bore.
Prepare two auxiliary head bolts with their head cut.
Install the two bolts [C] diagonally in the crankcase.
The piston ring openings must be positioned as shown in
the figure. The openings of the oil ring steel rails must be
about 30 – 40° of angle from the opening of the top ring.
[A] Top Ring
[B] Second Ring
[C] Upper Oil Ring Steel Rail [F] Hollow
Position the crankshaft so that all the piston heads are
Install the cylinder block [A].
Auxiliary Head Bolts [B]
Insert the piston rings with your thumbs.
Remove the cylinder (see Cylinder Removal).
Place a clean cloth under the pistons and remove the pis-
ton pin snap ring [A] from the outside of each piston.
[D] Oil Ring Expander
[E] Lower Oil Ring Steel Rail
ENGINE TOP END 5-29