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HONDA
EP5000-EP6500S
5.
VALVE CLEARANCE
Valve clearance
inspection
and adjustment
must be per-
formed with the engine cold.
1) Remove the spark plug cap.
2) Remove the cylinder
head cover
bolt, cylinder
head
cover and
gasket.
NOTE
• After the cylinder
head cover is
removed,
engine oil
may
flow.
Be sure to wipe up any flowed
oil.
FEELER GAUGE
3)
Remove the recoil
starter.
4) Set the piston
at top dead center of the compression
stroke (both valves fully closed). The triangular
mark on
the starter pulley will align with the top hole on the fan
cover when the piston is at top dead center of the com-
pression or exhaust
stroke.
5)
Insert a feeler gauge between the rocker arm and valve
to measure valve
clearance.
IN
0.15
±
0.02
mm
Standard valve
(0.006
±
0.001 in)
clearance
0.20
±
0.02 mm
EX
(0.008
±
0.001 in)
6)
If adjustment
is necessary, proceed as
follows:
a.
Hold the rocker arm pivot and loosen the rocker arm
pivot lock
nut.
b.
Turn the rocker arm pivot to obtain the specified clear-
ance.
c. Retighten the rocker arm pivot lock nut
while
holding
the rocker arm pivot.
d. Recheck valve clearance
after
tightening
the
rocker
arm pivot lock
nut.
6.
CARBURETOR
1) Start the engine and allow it to warm up to normal
oper-
ating
temperature.
2)
With the engine idling, turn the pilot screw in or out to
the setting that produces the highest idle rpm. The cor-
rect setting will usuallvoe
obtained at approximately
the
following
number
of turns
out from
the fully
closed
(lightly
seated)
position.
EP5000
2 - 5/8 turns out
Pilot screw opening
EP6500S
2 - 1/4 turns out
VALVE
ROCKER
ARM
ROCKERARM PIVOT
LOCKNUT
\
ROCKER ARM PIVOT
To increase
valve
clearance, screw out.
To
decrease valve
clearance, screw in.
THROTTLE
STOP
SCREW
3-4
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