C
A
B
Figure 4-3. Air Filter Assembly
Service Spark Plug
To service spark plug:
1. Clean area around spark plug.
2. Remove and inspect spark plug.
3. Inspect electrode gap with wire feeler gauge and
reset spark plug gap to 0.028 - 0.031 in (0.70 - 0.80
mm). See Figure 4-4.
Figure 4-4. Spark Plug
NOTE: Replace spark plug if electrodes are pitted,
burned or porcelain is cracked. Use ONLY recommend-
ed replacement plug. See Specifications.
4. Install spark plug finger tight, and tighten an
additional 3/8 to 1/2 turn using spark plug wrench.
Inspect Muffler and Spark
Arrestor
NOTE: Use ONLY original equipment replacement
parts.
Inspect muffler for cracks, corrosion, or other
damage. Remove spark arrestor, if equipped, inspect
for damage or carbon blockage. Replace parts as
required.
1
4
Inspect Spark Arrestor Screen
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces could
result in severe burns or fire.
1. Loosen clamp (A) and remove screw. See Figure
4-5.
2. Inspect screen (B) and replace if torn, perforated or
otherwise damaged. If screen is not damaged, clean
with commercial solvent.
3. Replace spark arrestor cone (C) and screen (B).
Secure with clamp (A) and screw.
C
A
B
Figure 4-5. Spark Arrestor Screen
Valve Clearance
IMPORTANT NOTE: If uncomfortable about doing this
procedure, or the proper tools are not available, take
generator to the nearest service center to have valve
clearance adjusted.
Check valve clearance after the first fifty-hours
of operation. Adjust as necessary.
• Intake — 0.15 ± 0.02mm (cold), (0.006 ±
0.0008 in)
• Exhaust — 0.20 ± 0.02mm (cold) (0.008 ±
0.0008 in)
Owner's Manual for Petrol Generator