Inspect Muffler And Spark Arrestor; Valve Clearance; Storage - Generac Power Systems GP Series Owner's Manual

Service Spark Plug
To service spark plug:
1. Clean area around spark plug.
2. Remove and inspect spark plug.
3. Inspect electrode gap with feeler gauge
and reset spark plug gap to 0.028 - 0.031
in (0.70 - 0.80 mm). See
Figure 4-4. Spark Plug
NOTE: Replace spark plug if electrodes are
pitted, burned or porcelain is cracked. Use
ONLY recommended 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: It is a violation of California Public
Resource Code, Section 4442, to use or oper-
ate the engine on any forest-covered, brush-
covered, or grass-covered land unless the
exhaust system is equipped with a spark
arrestor, as defined in Section 4442, main-
tained in effective working order. Other states
or federal jurisdictions may have similar laws.
Contact original equipment manufacturer,
retailer, or dealer to obtain a spark arrestor
designed for exhaust system installed on this
engine.
NOTE: Use ONLY original equipment replace-
ment parts.
Inspect muffler for cracks, corrosion, or other
damage. Remove spark arrestor, if equipped,
inspect for damage or carbon blockage.
Replace parts as required.
Inspect Spark Arrestor Screen
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, per-
forated or otherwise damaged. If screen is
18
Figure 4-4.
WARNING
not damaged, clean with commercial sol-
vent.
3. Replace spark arrestor cone (C) and
screen (B). Secure with clamp (A) and
screw.
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Valve Clearance

Important: Please contact an Independent
Authorized Service Dealer for service assis-
tance. Proper valve clearance is essential for
prolonging the life of the engine.
Check valve clearance after the first fifty-hours
of operation. Adjust as necessary.
• Intake — 0.15 ± 0.02mm (cold), (0.006 ±
0.001 in)
• Exhaust — 0.20 ± 0.02mm (cold) (0.008 ±
0.001 in)

Storage

General
It is recommended to start and run the genera-
tor for 30 minutes, every 30 days. If this is not
possible, refer to the following list to prepare
unit for storage.
• DO NOT place a storage cover on a hot
generator. Allow unit to cool to room tem-
perature before storage.
• DO NOT store fuel from one season to
(000108)
another unless properly treated.
• Replace fuel container if rust is present.
Rust in fuel will cause fuel system prob-
lems.
• Cover unit with a suitable protective, mois-
ture resistant cover.
B
Figure 4-5. Spark Arrestor Screen
DANGER
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Store fuel in a well
ventilated area. Keep fire and spark away. Failure to
do so will result in death or serious injury.
WARNING
Risk of Fire. Verify machine has properly
cooled before installing cover and storing
machine. Hot surfaces could result in fire.
Owner's Manual for Portable Generator
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