Cylinder Head Disassembly/ Assembly - Honda GX240RT2 Service And Repair Manual

CYLINDER HEAD/VALVES
CYLINDER HEAD DISASSEMBLY/
ASSEMBLY
Remove the cylinder head (page
INTAKE/EXHAUST VALVE SPRING RETAINER
DISASSEMBLY:
Push down and slide the valve spring retainer
to the side so that the valve stem 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 SPRING
SEAT
PIVOT ADJUSTING
NUT (2)
10 N·m (1.0 kgf·m,
7 lbf·ft)
ROCKER ARM
PIVOT (2)
(Apply oil to the
threads and pivot)
gx240ut2_gx270ut2_gx340ut2_gx390ut2
12-3).
EXHAUST VALVE
GUIDE
VALVE
GUIDE
CLIP
PUSH ROD
GUIDE PLATE
PIVOT BOLT 8 mm (2)
24 N·m (2.4 kgf·m, 17 lbf·ft)
(Apply to the tappet surface and pivot)
VALVE ROCKER ARM
ASSEMBLY:
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.
CYLINDER HEAD
SPARK
PLUG
INTAKE VALVE GUIDE
SHROUD
VALVE STEM SEAL
6 x 12 (CT bolt)
VALVE SPRING (2)
PUSH ROD (2)
ASSEMBLY:
Before installing the push rods, check the ends of the push
rods for wear.
Be sure the ends of the push rods are firmly seated in the
valve lifters.
EXHAUST VALVE
ASSEMBLY:
Do not interchange
with the intake valve.
The exhaust valve is
smaller than the
intake valve.
VALVE HEAD
DIAMETER: 31mm
INTAKE VALVE
ASSEMBLY:
Do not interchange with
the exhaust valve.
The intake valve is
larger than the exhaust
valve.
VALVE HEAD
DIAMETER: 33mm