Manualshelf

Operation Manual

ManualsBrandsKubota ManualsMiscellaneousBX25
81828384858687888990
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
ENGINE
(1
)
3TMABAB1 P023B
3EEABAB1P057A
Top Clearance
1.
Remove the cylinder head. (Do not attempt
to
remove the
cylinder head gasket.)
2.
Move the piston up and stick a strip of fuse [1.5
mm
dia. (0.059
in. dia.), 5 to 7 mm long (0.197 to 0.276
in.
long)]
on
the piston
head at three positions with grease so as to avoid the intake and
exhaust valves and the combustion chamber ports.
3.
Lower the piston, and install the cylinder head and tighten the
cylinder head screws to the specified torque.
4.
Turn
the flywheel until the piston exceeds top dead center.
5.
Remove the cylinder head, and measure the thickness
of
the
squeezed fuses.
6.
If the measurement is not within the factory specifications, check
the oil clearance between the crankpin and crankpin bearing and
between the piston pin and small end bushing .
• NOTE
• After checking the top clearance, be sure to assemble the
cylinder head with a new cylinder head gasket.
0.50 to 0.70 mm
Top
clearance
IFactory spec.
0.0197 to 0.0276 in.
37.3 to 42.2 N'm
1ightening torque
Cylinder head screws 3.8 to 4.3 kgf·m
27.5 to
31.1
ft-Ibs
(1) Fuse
W1020190
1-S12