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5-38 ENGINE TOP END
Cylinder, Pistons
•
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.
Top R ing [A ]
Second Ring [B]
Upper Oil Ring Steel Rail [C]
Oil Ring Expander [D]
Lower Oil Ring Steel Rail [E]
Dent [F]
30 ∼ 40° [G]
•
Position the crankshaft at #2, 3 piston TDC.
•
Prepare two auxiliary head bolts with their head cut.
○
Install the two cylinder head bolts [A] diagonally in the
crankcase.
•
Install the cylinder block [B].
Pistons [C]
○
First insert the #2, 3 pistons, and then rotate the crank-
shaft at 90° angle.
•
Tighten the upper engine mounting bolts and engine
bracket bolts after cylinder head bolts tightend.
Piston Removal
•
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.
•
Remove the piston pins.
Special Tool - Piston Pin Puller Assembly [A]: 57001-910
•
Remove the pistons.
•
Carefully spread the ring opening with your thumbs and
then push up on the opposite side of the ring [A] to remove
it.
•
Remove the 3-piece oil ring with your thumbs in the same
manner.
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