Kubota M105S, Workshop Manual

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1-S30
M105S, WSM ENGINE
Cylinder Head and Tappet
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.
6. Remove the tappets (4) from the crank case.
(When reassembling)
• Replace the head gasket with a new one.
• Before installing the tappets (4), apply engine oil thinly around
them.
• When mounting the gasket, set it to the knock pin hole. 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.
• 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 “Valve
Clearance”.
• It is not necessary to retighten the cylinder head screw after
running the engine for 30 minutes.
IMPORTANT
■
• When replace the piston, piston pin bush, connecting rod or
crankpin bearing, select the cylinder head gasket thickness
to meet with the top clearance refer to the “Selecting
Cylinder Head Gasket”.
NOTE
■
• Mark the cylinder number to the tappets to prevent
interchanging.
W1038522
Tightening torque
Cylinder head mounting
screw
98.1 to 107.9 N·m
10.0 to 11.0 kgf·m
72.3 to 79.6 ft-lbs
(1) Return Pipe
(2) Fuel Filter
(3) Fuel Pipe
(4) Tappet A : Gear Case Side
B : Flywheel Side
KiSC issued 03, 2007 A