Honda GP160H Manual page 91

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CYLINDER HEAD
CYLINDER HEAD
DISASSEMBLY/ASSEMBLY
Remove the cylinder head (page 12-3).
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 retainers while
the cylinder head is installed to the cylinder
barrel, or the valve will drop into the cylinder.
INSTALLATION:
Do not interchange the intake and exhaust
retainers.
IN
VALVE SPRING (2)
INSPECTION: (page 12-7)
ROTATOR
ROCKER ARM
PIVOT LOCK NUT (2)
10 N·m (1.0 kgf·m, 7 lbf·ft)
ROCKER ARM PIVOT (2)
(Threads and pivot)
VALVE ROCKER ARM
INSTALLATION:
Before installing the valve rocker arm, check for
wear on the surfaces of the rocker arm that contact
the pivot bolt, push rod, and valve stem.
12-4
EX
SPARK PLUG
INSPECTION: (page 3-6)
VALVE STEM SEAL
ROCKER ARM
PIVOT BOLT (2)
(Threads and seating surface)
24 N·m (2.4 kgf·m, 18 lbf·ft)
(Tappet surface and pivot)
[2]
[1]
CYLINDER HEAD
INSPECTION: (page 12-5)
PUSH ROD
GUIDE PLATE
PUSH ROD
INSPECTION: (page 12-8)
ASSEMBLY:
Before installing the push rods, check the ends of
the push rod for wear.
Be sure the ends of the push rods are firmly
seated in the lifters.
(Sliding surface
and stem end)
EXHAUST VALVE
INSPECTION: (page 12-7)
INSTALLATION:
Do not interchange with the intake valve.
The exhaust valve is smaller than the
intake valve.
(Sliding surface
and stem end)
INTAKE VALVE
INSPECTION: (page 12-7)
INSTALLATION:
Do not interchange with the
exhaust valve.
The intake valve is larger than the
exhaust valve.