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Page 12 For technical questions, please call 1-800-444-3353. SKU 96156
Spark Plug Maintenance
Disconnect spark plug wire from end 1.
of plug. Clean out debris from around
spark plug.
Using a spark plug wrench, remove the 2.
spark plug.
Inspect the spark plug: 3.
If the electrode is oily, clean it using a
clean, dry rag.
If the electrode has deposits on it, polish
it using emery paper.
If the white insulator is cracked or
chipped, the spark plug needs to be
replaced.
When installing a new spark plug, adjust 4.
the plug’s gap to the specication on the
Specication chart. Do not pry against
the electrode or the insulator, the spark
plug can be damaged.
Install the new spark plug or the cleaned 5.
spark plug into the engine. Gasket-style:
Finger-tighten until the gasket contacts
the cylinder head, then about 1/2-2/3
turn more.
Non-gasket-style: Finger-tighten until the
plug contacts the head, then about 1/16
turn more.
Apply a small amount of dielectric grease 6.
(not included) to the insulator of the
spark plug and attach the wire securely
to the spark plug.
Cleaning, Maintenance, and
Lubrication Schedule
Note: This maintenance schedule is
intended solely as a general guide. If
performance decreases or if engine
operates unusually, check systems
immediately. The maintenance needs
of each engine will differ depending on
factors such as duty cycle, temperature,
air quality, fuel quality, and other factors.
Note: These procedures are in addition to
the regular checks and maintenance
explained as part of the regular operation
of the engine.
After Initial 20 Operation Hour Period:
Change engine oil.a.
Every 25 Operation Hours Thereafter:
Clean/replace air lter element.a.
Inspect/clean spark plug.b.
Every 50 Operation Hours:
Change engine oil.a.
Every 100 Operation Hours:
Replace spark plug.a.
Replace air lter element.b.
Note: All maintenance procedures scheduled
for 25, 50, and 100 operation hours
should be performed at least yearly.
Every 300 Operation Hours:
Clean fuel tank and carburetor.a.
Clean carbon build-up from combustion b.
chamber.