Honeywell hw400 User Manual

Page of 56
CLEANING SPARK ARRESTOR SCREEN
7-6
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 Honeywell Portable Electrical Generator Service Manual
7.5 CLEANING SPARK ARRESTOR 
SCREEN
The generator muffler is equipped with a spark arrestor 
screen, which must be cleaned according to the mainte-
nance schedule (see Table 7-1) to ensure prevention of 
sparks escaping generator.
1.
Stop the engine if it is running. Allow to completely 
cool.
2.
Place generator on a flat, level surface.
3.
Using a socket wrench with an 8 mm socket, remove 
the muffler cover bolts (muffler cover not present on 
HW3000 or HW3000L models).
4.
Remove muffler cover.
5.
Using a screwdriver, loosen and remove the spark 
arrestor clamp (A) screw.
6.
Slide off spark arrestor clamp.
7.
Using a socket wrench with a 7/32” socket, remove 
the retaining screw on spark arrestor screen cap (B); 
pull off cap. 
8.
Pull out spark arrestor screen (C).
9.
Inspect spark arrestor screen.
„
If screen is damaged or excessively worn, replace 
with new screen.
„
If screen is in good condition, clean using wire 
brush and then reinstall.
10.
Reinstall remaining spark arrestor components.
„
Spark arrestor screen cap and screw
„
Clamp and screw
„
Muffler cover
Muffler reaches temperatures that can cause serious 
burns if touched. NEVER touch hot surfaces.
To clean spark arrestor screen, you will need:
‰ 1/4” socket wrench
‰ 8 mm socket
‰ 7/32” socket
‰ #2 Phillips screwdriver
‰ Wire brush
FIGURE 7-14:  Remove Muffler Cover
WARNING
FIGURE 7-15:  Spark Arrestor Assembly
FIGURE 7-16:  Clean Screen 
A
B
C