Cylinder Head Valves; Horsepower - DeWalt DW168F Manual

Cylinder Head Valves

6.5 h.p.
F7. Head Bolts (4)
G7. Cylinder head cover
G6. Spark plug
I7. Head gasket
J7. Gasket
K7. Valve cover bolts (4)
L7. Cylinder head
M7. Valve spring retainer (2)
N7. Valve rotator (2)
O7. Push rod guide
P7. Rocker arm (2)
Q7. Valve spring (2)
R7. Rocker arm pivot (2)
S7. Rocker arm pivot nut (2)
T7. Rocker arm pivot bolt (2)
U7. Exhaust valve
V7. Intake valve
w7. Oil seal
X7. Push rods (2)
Y7. Air shroud
Z7. Valve tappet (2)
A8. Shroud bolts (2)
Inspect valve
spring (Q7).
P7
CaUtIon: Do not
remove the valve spring (Q7)
while the cylinder head is
installed or the valves (U7, V7)
will drop into the cylinder.
Loosen and tighten
bolts in a crisscross
pattern, taking 2-3
steps.
J7
under Maintenance.
G7
w7
K7
Q7
m7
N7
X7
O7
T7
R7
S7
Check for wear on rocker arm
and push rods, replace if needed.
Clean spark plug. See spark plug
G6
L7
f7
Z7
A8
42
Do not interchange
the exhaust (U7) and
intake (V7) valves.
U7
I7
V7
before installation,
remove any carbon deposits
from the combustion
chamber and inspect the
valve seats. After assembly
measure the cylinder
compression.
Y7