Table of Contents
Advertisement
MAINTENANCE
CHECKING/ADJUSTING THE VALVE
CLEARANCE
See Figures 38 - 39.
NOTICE
Checking and adjusting valve clear-
ance must be done when the engine is cold.
l Turn the generator off and allow the engine to cool for
30 minutes.
l Place the generator on a level surface in a well-ventilated
area.
l Remove the rocker arm cover and carefully remove the
gasket. If the gasket is torn or damaged, it must be re-
placed.
l Remove the spark plug so the engine can be rotated more
easily.
l Pull the recoil handle to rotate the engine to top dead
center (TDC). Looking through the spark plug hole; the
piston should be at the top (both valves are closed).
l Both rocker arms should be loose at TDC on the com-
pression stroke. If they are not, rotate the engine 360°.
l Insert a feeler gauge between the rocker arm and the
valve stem to measure valve clearance.
Intake Valve
Valve
0.0031 – 0.0047 in
Clearance
(0.08 – 0.12 mm)
Torque
l If an adjustment is necessary, hold the rocker arm pivot
and loosen the pivot adjusting nut.
l Slide the appropriate feeler gauge between the rocker
arm and the valve stem.
l Turn the rocker arm pivot to obtain the specified clear-
ance. Hold the rocker arm pivot and re-tighten the pivot
adjusting nut to the specified torque.
Torque: 106 inch-pound (12 Nm)
l Recheck valve clearance.
l If no further adjustments are needed, perform this proce-
dure on the other valve.
l When finished, install the gasket, rocker arm cover, and
spark plug.
32 | English
Exhaust Valve
0.0051 – 0.0067 in
(0.13 – 0.17 mm)
8 – 12 Nm
8 – 12 Nm
FIG. 38
A
B
A - Gasket
B - Rocker arm cover
C - Bolt
FIG. 39
A
A - Valve stem
B - Rocker arm
C - Pivot adjusting nut
D - Rocker arm pivot
C
B
C
D
Advertisement
Table of Contents
