Spark Plug Service - Honda HRA215 Owner's Manual

9. MAINTENANCE
SPARK PLUG SERVICE
Recommended spark plugs: NGK BPR5ES
ND 16EPR-U
CHAMPION RN12Y
1 IMPORTANT NOTICE 1 s park plugs of the wrong
heat range can cause
engine damage.
For good performance, the spark plug must be properly gapped and free of deposits
1.
2.
3.
4.
5.
6.
Disconnect the spark plug cap, and remove any dirt from around the spark
plug area.
m
Touching the engine or exhaust system while hot can
cause burns. Let the engine cool before servicing.
Remove the spark plug with a spark plug wrench.
Inspect the spark plug. Replace it if the electrodes are worn, or if the insulator
is cracked or chipped. Clean the spark plug with a wire brush if you are going
to reuse it.
Measure the spark plug electrode gap with a feeler gauge. The gap should
be 0.024-0.028 in (0.6-0.7 mm). Correct the gap as necessary by carefully
bending the side electrode.
Install the spark plug carefully, by hand, to avoid cross-threading.
After the spark plug is seated, tighten with a spark plug wrench to compress
the washer.
IMPORTANT NOTICE A I oose spark plug can get hot enough
to damage
the engine. Over-tightening may damage the threads.
NOTE: If installing a new spark plug, tighten 112 turn after the spark plug seats
to compress the washer. If reinstalling a used spark plug, tighten 1 B-1 14 turn after
the spark plug seats.
7. Install the spark plug cap on the spark plug.
40
SPARK PLUG WRENCH
0.024-0.026 in.
(0.6-0.7 mm)