ENGINE
M6040, M7040, WSM
1-S39
Injection Nozzle Oil Seal (if necessary)
1. Remove the injection nozzle oil seal (2) from cylinder head
cover (1).
(When reassembling)
• When installing the injection nozzle oil seal, use new one.
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Cylinder Head
1. Remove the cylinder head screw in the order of (10) to (1), and
remove the cylinder head.
2. Remove the cylinder head gasket.
(When reassembling)
• Replace the head gasket with a new one.
• 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
(10) after applying engine oil.
• Be sure to adjust the valve clearance. (See page 1-S14.)
• It is not necessary to retighten the cylinder head screw after
running the engine for 30 minutes.
• When replacing a piston, piston pin bush, connecting rod
or crankpin bearing, select the cylinder head gasket
thickness to meet with the top clearance. (See page 1-S40.)
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(1) Cylinder Head Cover (2) Injection Nozzle Oil Seal
Tightening torque
Cylinder head mounting
screw
187 to 196 N·m
19.0 to 20.0 kgf·m
138 to 144 lbf·ft
A: Front Cover Side B: Flywheel Housing Side
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