Operation Manual
BX25,
RCK54(P)-23BX,
RCK60B-23BX,
LA240,
BT601,
WSM
ENGINE
Piston
1.
Turn the flywheel and bring the piston
to
top dead center.
2.
Draw out the piston upward by lightly tapping it from the bottom
of
the crankcase with the grip
of
a hammer.
3.
Draw out the other pistons after the same method as above.
(When reassembling)
• Before inserting the piston into the cylinder, apply enough engine
oil to the cylinder.
• When inserting the piston into the cylinder, face the mark on the
connecting rod
to
the injection pump .
• IMPORTANT
• Do
not
change the combination
of
cylinder
and piston. Make
sure
of
the position
of
each piston
by
marking. For example,
mark
"1"
on
the
No.1
piston.
• When installing the piston
into
the cylinder, place the gaps
of
all
of
the piston rings as
shown
in the figure.
• Carefully insert
the
piston
using
a piston ring
compressor
(1). Otherwise,
their
chrome-plated section may be
scratched, causing trouble inside the cylinder.
Models Mark
I0902-E2-BX-2
2A
3TMABAB1
P046F
(1) Piston Ring Compressor
(A) Top Ring Gap
(8)
Second Ring Gap
(e)
011
Ring Gap
(0)
Piston Pin Hole
(a)
0.785 rad (45
0)
(b) 0.785 rad (45
0)
(c) 1.57 rad (90
0)
(d) Mark
W10277450
1-836