Spark Plug Service - Honda FJ500 Owner's Manual

SERVICING YOUR TILLER

SPARK PLUG SERVICE

Recommended spark plug:
An incorrect spark plug 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 the spark plug wrench.
3. Inspect the spark plug. Replace it
if the electrodes are worn, or if the
insulator is cracked or chipped.
4. Measure the spark plug electrode
gap with a wire-type feeler gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
The gap should be:
0.7 - 0.8 mm
5. Install the spark plug carefully, by
hand, to avoid cross-threading.
6. After the spark plug seats, tighten
with the spark plug wrench to
52
BPR5ES (NGK) ,
SPARK PLUG WRENCH
W16EPR-U (DENSO)
0.7 - 0.8 mm
SEALING WASHER