Spark Plug Service - Honda F220 Owner's Manual

SPARK PLUG SERVICE

Recommended spark plugs: CR4HSB (NGK)
Incorrect spark plugs can cause engine damage.
1. Disconnect the spark plug cap, and remove any dirt from around the
spark plug area.
2. Remove the spark plug with a 5/8-inch spark plug wrench.
3. Inspect the spark plug. Replace it if
the electrodes are worn or the
insulator is cracked, chipped, or
fouled.
4. Measure the spark plug electrode gap
with a wire-type feeler gauge.The gap
should be 0.024 – 0.028 in (0.6 – 0.7
mm). Correct the gap, if necessary, by
carefully bending the side electrode.
5. Install the spark plug carefully, by
hand, to avoid cross-threading.
6. After the spark plug seats, tighten with
a 5/8-inch spark plug wrench to
compress the washer.
If reinstalling a used spark plug, tighten
SERVICING YOUR TILLER
U14FSR-UB (DENSO)
SPARK PLUG
WRENCH
0.024 – 0.028 in
(0.6 – 0.7 mm)
SEALING WASHER
35