Honda WB20XT2 Manual page 103

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CYLINDER HEAD
CYLINDER HEAD
DISASSEMBLY/ASSEMBLY
Remove the cylinder head (page 12-3).
INTAKE/EXHAUST VALVE SPRING RETAINER
REMOVAL:
Push down and slide the valve spring retainer (1) to
the side so that the valve stem (2) slips through the
hole at the side of the valve spring retainer.
Do not remove the valve spring retainer while the
cylinder head is installed to the cylinder barrel, or the
valve will drop into the cylinder.
VALVE GUIDE CLIP
VALVE SPRING (2)
LOCK NUT (2)
10 N·m (1.0 kgf·m, 7 lbf·ft)
12-4
(1)
EXHAUST VALVE GUIDE
INTAKE VALVE GUIDE
(Threads and pivot)
ROCKER ARM PIVOT (2)
(2)
SPARK PLUG
18 N·m (1.8 kgf·m, 13 lbf·ft)
CYLINDER HEAD
VALVE STEM SEAL
PUSH ROD GUIDE PLATE
ROCKER ARM PIVOT BOLT (2)
24 N·m (2.4 kgf·m, 18 lbf·ft)
VALVE ROCKER ARM (2)
INSTALLATION:
Before installing the rocker arm, check for wear on the surfaces of
the rocker arm that contact the pivot bolt, push rod, and valve stem.
WB20XT2•WB30XT2
(Sliding surface and stem end)
EXHAUST VALVE
INSTALLATION:
Do not interchange with the
intake valve.
The exhaust valve is smaller
than the intake valve.
(Sliding surface
and stem end)
INTAKE VALVE
INSTALLATION:
Do not interchange with
the exhaust valve.
The intake valve is larger
than the exhaust valve.
(Tappet surface and pivot)