Spark Plug Maintenance - Westinghouse WP2300 Owner's Manual

SPARK PLUG MAINTENANCE

The spark plug must be checked and cleaned after
every 100 hours of use or 6 months and must be
replaced after 300 hours of use or every year.
1. Stop the pressure washer and let it cool for several
minutes if running.
2. Move the pressure washer to a fl at, level surface.
3. Remove the spark plug boot by fi rmly pulling the
plastic spark plug boot handle directly away from
the engine (see Figure 33).
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 boot.
Figure 33 – Removal of Spark Plug Boot
4. Clean area around the spark plug.
5. Remove the spark plug from the cylinder head (see
Figure 34).
Figure 34 – Removing Spark Plug
MAINTENANCE
6. 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.
7. Inspect the spark plug for:
Cracked or chipped insulator
Excessive wear
Spark plug gap (the acceptable limit of 0.024 –
0.032 in. [0.60 – 0.80 mm]) (see Figure 35).
If the spark plug fails any one of the conditions
listed above, replace the plug with a Champion
RN11YC4 plug or equivalent.
NOTICE
Only use the recommended spark plug (Champion
RN11YC4 or equivalent). Using a non-recommended
spark plug could result in damage to the engine.
Figure 35 – Spark Plug Gap Requirements
8. Install the spark plug by carefully following the steps
outlined below:
a - Carefully insert the spark plug back into the
cylinder head. Hand-thread the spark plug until
it bottoms out.
b - Turn the spark plug to ensure it is fully seated.
c - Replace the spark plug boot, making sure the
boot fully engages the spark plug's tip.
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