Kubota B1220 Workshop Manual page 97

B1220, B1620, B1820, WSM
Cylinder Head and Cylinder Head Gasket
1. Loosen the pipe clamps (1), and remove the water return pipe
(2).
2. Remove the cylinder head screw in the order of (n or j) to (a).
3. Remove the cylinder head gasket.
(When reassembling)
• Replace the cylinder head gasket with a 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 j).
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.
Tightening torque Cylinder head screw
(1) Pipe Clamp
(2) Water Return Pipe
(3) Pin Pipe
Tappets
1. Remove the tappets (1) from the crankcase.
(When reassembling)
• Visually check the contact between tappets and cams for proper
rotation. If defect is found, replace tappets.
• Before installing the tappets, apply engine oil thinly around
them.
IMPORTANT
• Do not change the combination of tappet and tappet guide.
(1) Tappet
1-S28
ENGINE
38 to 42 N·m
3.8 to 4.3 kgf·m
28 to 31 lbf·ft
A : Gear Case Side
(n or j) to (a) : To Loosen
(a) to (n or j) : To Tighten
[a] Z482
[b] D722 and D782
9Y1210272ENS0035US0
9Y1210272ENS0036US0
KiSC issued 07, 2011 A
(EU)