Honda WT30XK4, Manual

Page: 103 / 124

CRANKCASE
13-8
PISTON DISASSEMBLY/ASSEMBLY
Remove the piston(page 13-5).
PISTON PIN CLIP
CUTOUT
END GAP
PISTON
ASSEMBLY:
Set the connecting rod upper
with the long end toward the
mark on the piston head.
LONG END
OIL RING
(COMBINATION
RING)
SIDE RAIL
SPACER
PISTON RING SET
TOP RING
SECOND RING
OIL RING
PISTON PIN CLIP (2)
WT30XK4: (18 mm)
WT40XK3: (20 mm)
PISTON PIN
TOP RING
SECOND RING
MAKER MARK
10 mm (0.4 in)
120°
120°
120°
ASSEMBLY:
Be sure that the top ring and second ring
are not interchanged.
Install the top ring and second ring on the
piston with the maker mark side facing up.
Check that the piston rings rotate smoothly
after installing them.
Space the piston ring end gaps 120
degrees apart, and do not align the ring
end gaps with the piston pin bore.
10 mm (0.4 in)
PISTON
ASSEMBLY:
Install by setting one end of the piston pin
clip in the groove of the piston pin bore,
holding the other end with long needle
pliers, and rotating the clip in.
Do not align the end gap of the piston pin
clip with the cutout of the piston pin bore.
(Chrome plated)
SIDE RAIL
MARK
CONNECTING ROD UPPER
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