Kubota M6800S Workshop Manual page 107

M6800 · M6800S · M8200 · M9000, WSM
Cylinder Head and Tappet (Engine Serial Number :
below YY0470)
1. Loosen the pipe band, and remove the water return pipe (1).
2. Disconnect the fuel pipe (3) first and then the fuel filter (2).
3. Remove the IN. / EX. manifold.
4. Remove the cylinder head screw in the order of (18) to (1), and
remove the cylinder head.
5. Remove the cylinder head gasket and O-ring (4).
6. Remove the tappets (5) from the crank case.
(When reassembling)
• Replace the head gasket with a new one.
• Before installing the tappets (5), apply engine oil thinly around
them.
• When mounting the gasket, set it to the knock pin holes. Take
care not to mount it reversely.
• The cylinder head should be free of scratches and dust.
• Take care for handling the gasket not to damage it.
• Install the cylinder head, using care not to damage the O-ring (4).
• Tighten the cylinder head screw gradually in the order of (1) to
(18) after applying engine oil.
• Be sure to adjust the valve clearance. See the page 1-S19.
• Retighten the cylinder head screw after running the engine for 30
minutes.
• After retighten the cylinder head screw, check and adjust the
valve clearance. See the page 1-S19.
IMPORTANT
• Cylinder Head Gasket between Engine Serial Number :
below YY0470 and above YY0471 are NOT convertible. The
Pistons and Piston Ring Assembly are also NOT convertible
between Engine Serial Number : below YY0470 and above
YY0471.
Engine Serial Number : below YY0470
Part Name
Cylinder Head Gasket
NOTE
• Mark the cylinder number to the tappets to prevent
interchanging.
Cylinder head mounting
Tightening torque
screw
(1) Return Pipe
(2) Fuel Filter
(3) Fuel Pipe
(4) O-ring
(5) Tappets
1-S22
Part Code
V3300-E · V3300-TE · V3300-TIE
1C010-03310
98.1 to 107.9 N·m
10.0 to 11.0 kgf·m
72.3 to 79.6 ft-lbs
A : Gear Case Side
B : Flywheel Side
ENGINE
W1050411
KiSC issued 03, 2008 A