Spark Plug Maintenance - Westinghouse 2400i Instruction Manual

SPARK PLUG MAINTENANCE

Tools required – Spark plug socket wrench
(included), spark plug gap tool or feeler gauge (not
included) and wire brush (not included).
The spark plug should be checked and cleaned
after every 100 hours of use or 6 months and then
replaced after 250 hours of use or every year.
1. Stop the generator and let it cool for several
minutes if it's been running.
2. Move the generator to a flat, level surface.
3. Slide open and remove the spark plug access
cover (see Figure 24).
Figure 24 – Removing the Spark Plug Access Cover
4. Remove the spark plug boot by firmly pulling it
up and away from the engine (see Figure 25).
Figure 25 – Removing the Spark Plug Boot
NOTICE
Never apply any side load or move the spark plug
laterally when removing the spark plug. Applying
a side load or moving the spark plug laterally may
crack and damage the spark plug insulator.
MAINTENANCE
Figure 26 – Removing the Spark Plug
5. Clean area around the spark plug.
6. Use a spark plug socket wrench to remove the
spark plug from the cylinder head by unscrewing
it anti-clockwise (see Figure 26).
7. Place a clean rag over the opening created by
the removal of the spark plug to make sure no
dirt can get into the combustion chamber.
8. Inspect the spark plug for:
• Cracked or chipped insulator; replace the
spark plug.
• Excessive wear of the electrodes; replace the
spark plug.
• Excessive carbon or oil fouling of the
electrodes; clean the electrodes with a wire
brush or replace the spark plug.
• Spark plug gap within the acceptable
limits of 0.6 – 0.7 mm or 0.024 – 0.028 inch
(see Figure 27); after cleaning with a wire
brush, check using a spark plug gap tool or
feeler gauge and adjust by carefully bending
the ground electrode. Always check the gap
of a new spark plug before installing it.
When replacing the spark plug, use only a Torch
A5RTC or equivalent such as NGK CR5HSA, Denso
U16FSR-U, Champion RZ11Y or Bosch UR4AS.
NOTICE
Use only the recommended spark plug (Torch
A5RTC) or equivalent. The use of a non-
recommended spark plug can damage the engine.
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