User Manual

22 | Westinghouse Portable Power
CLEANING THE SPARK ARRESTOR
Check and clean the spark arrestor after every 100
hours of use or 6 months.
1. Stop the inverter and let it cool for several minutes
if running.
2. Move the inverter to a at, level surface.
3. Remove the screws holding the muer cover in
place (see Figure 21).
4. Loosen the clamp holding the spark arrestor onto
the muer.
5. Slide the spark arrestor band clamp o the spark
arrestor screen.
6. Pull the spark arrestor screen o the muer
exhaust pipe.
7. Using a wire brush, remove any dirt and debris that
may have collected on the spark arrestor screen.
8. If the spark arrestor screen shows signs of wear
(rips, tears or large openings in the screen), replace
the spark arrestor screen.
9. Install the spark arrestor components in the
following order:
a. Place spark arrestor screen over the muer
exhaust pipe. Push on the screen until it fully
bottoms out.
b. Place the spark arrestor band clamp over the
screen and tighten with a athead screwdriver
10. Replace the discharge gate.
CHECKING AND ADJUSTING VALVE LASH
CAUTION
Checking and adjusting valve lash
must be done when the engine is cold.
1. Remove the rocker arm cover and carefully remove the
gasket. If the gasket is torn or damaged, it must be replaced.
2. Remove the spark plug so the engine can be rotated more
easily.
3. Rotate the engine to top dead center (TDC) of the
compression stroke. Looking through the spark plug hole, the
piston should be at the top.
4. Both the rocker arms should be loose at TDC on the
compression stroke. If they are not, rotate the engine 360°.
5. Insert a feeler gauge between the rocker arm and the push
rod and check for clearance (see Figure 22). See Table 2 for
valve lash specications
Figure 22
(1) Push Rod, (2) Feeler Gauge Area
(3) Rocker Arm, (4) Jam Nut, (5) Adjusting Nut
Table 2: Standard Valve Lash
Intake Valve Exhaust Valve
Valve Lash
.0023-.0039in
(.06-.10mm)
.0031-.0048in
(.08-.12mm)
Bolt Torque
8-12N.m 8-12N.m
6. If an adjustment is required, hold the adjusting nut and loosen
the jam nut.
7. Turn the adjusting nut to obtain the correct valve lash. When
the valve lash is correct, hold the adjusting nut and tighten
the jam nut to 106 in-lb (12 N•m).
8. Recheck the valve lash after tightening the jam nut.
9. Perform this procedure for both the intake and exhaust
valves.
10. Install the rocker arm cover, gasket and spark plug.
MAINTENANCE
Figure 21: Remove screws holding muer cover
1
2
3
4
5