Kubota B1830, Workshop Manual, Page: 142 / 548

ENGINE B1830,B2230,B2530,B3030, WSM
1-S41
Rocker Arm and Push Rod
1. Remove the rocker arm bracket nut.
2. Detach the rocker arm assembly (1).
3. Remove the push rods (2).
(When reassembling)
• When putting the push rods (2) onto the tappets (3), check to
see if their ends are properly engaged with the dimples.
IMPORTANT
• After installing the rocker arm, be sure to adjust the valve
clearance.
9Y1210003ENS0057US0
Cylinder Head
1. Loosen the hose clamps (1), and remove the water return hose
(2).
2. Remove the cylinder head screw in the order of ( n or r ) to ( a ).
3. Lift up the cylinder head to detach.
4. Remove the cylinder head gasket.
(When reassembling)
• Replace the cylinder head gasket with new one.
• When mounting the gasket, set it to the pin pipe holes. Take
care not to mount it reversely.
• The cylinder head should be free of scratches and dust.
• Install the cylinder head, using care not to damage the gasket.
• After applying engine oil to the thread of screws, tighten them in
several steps and specified sequence ( a ) to ( n or r ).
NOTE
• Do not use O-ring on the pin pipe.
• It is not necessary to retighten the cylinder head screw and
to readjust valve clearance after engine warmed up.
9Y1210003ENS0058US0
Tightening torque Rocker arm bracket nut
21.6 to 26.5 N·m
2.2 to 2.7 kgf·m
15.9 to 19.5 lbf·ft
(1) Rocker Arm Assembly
(2) Push Rod (3) Tappet
Tightening torque Cylinder head screw
63.7 to 68.6 N·m
6.5 to 7.0 kgf·m
47.0 to 50.6 lbf·ft
(1) Pipe Clamp
(2) Water Return Pipe
(3) Pin Pipe (n or r) to (a):To Loosen
(a) to (n or r):To Tighten
KiSC issued 05, 2012 A