8628265 420CC OHV GAS ENGINE WITH ELECTRIC START V 1.0
4.6 Reassemble the foam and paper filter elements.
5. Reinstall the filter into the housing and secure in place.
6. Install the air filter assembly onto the carburetor and secure
with screw.
REPLACING THE SPARK PLUG
NOTICE! Using an incorrect spark plug can cause engine
damage. Only replace a spark plug with a model recommended
by the manufacturer.
The spark plug must be properly gapped and free of deposits for
the best performance. Check local bylaws to see if a resistor spark
plug is required to suppress ignition signals. Replace the included
spark plug with a resistor spark plug if required.
1. Remove any dirt from around the spark plug area.
2. Unclip the spark plug lead and remove the spark plug with a
spark plug wrench. This will have a rubber pad inside the
socket to protect the spark plug’s ceramic coating.
3. Inspect the spark plug. Replace it if damaged, badly fouled, the
sealing washer is in poor condition or the electrode is worn.
4. Check the gap with a spark plug gauge as shown in Figure 7.
If necessary, reset the gap (See Specifications).
4.1 Correct the gap by carefully bending the side electrode.
Check the gap after each
adjustment.
5. Install the spark plug carefully
by hand to avoid cross
threading.
6. Tighten the spark plug to the
recommended torque until the
gasket is compressed. See
Specifications for the correct
torque rating.
22 For technical questions call 1-800-665-8685
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