Westinghouse iGen4000c User Manual page 24

MAINTENANCE
REPLACING THE FUEL FILTER
See Figure 22.
Overtime, the fuel filter may become dirty or clogged. To
reduce the risk of engine failure, replace the fuel filter ac-
cording to the figures specified in the maintenance schedule
or the engine manual (if applicable).
l Turn the generator off and allow the engine to cool for
30 minutes.
l Drain the fuel tank as described previously.
l Remove the screws securing the control panel.
l Remove the control panel.
l Locate the fuel filter and note the filter's orientation.
l Using pliers, squeeze the fuel line clips and slide the fuel
lines away from the filter.
l Install the fuel lines onto the new filter. Ensure the fuel
filter is oriented correctly.
l .Replace the control and tighten screws securely.
CHECKING/ADJUSTING THE VALVE
CLEARANCE
See Figures 23 - 24.
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
0.031 – 0.005 in
Clearance
(0.08 – 0.12 mm)
Torque
l If an adjustment is necessary, loosen the jam nut.
l Slide the appropriate feeler gauge between the rocker
arm and the valve stem.
l Tighten the adjustment screw onto the push rod to obtain
the specified clearance.
NOTE: You should be able to feel the rocker arm touch
the feeler gauge.
24 | English
Exhaust Valve
0.005 – 0.007 in
(0.13 – 0.17 mm)
8 –12 Nm 8 –12 Nm
FIG. 22
A - Fuel Line
B - Fuel Filter
FIG. 23
B
C
A - Rocker Arm Cover
B - Bolt
C - Gasket
FIG. 24
A - Adjustment Screw
B - Jam Nut
C - Feeler Gauge
D - Rocker Arm
E - Valve Stem
F - Push Rod
l Hold the adjustment screw in place and tighten the nut.
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.
B
A
A
A
D
B
C
F
E