Honda HRX217HMA Owner's Manual page 44

SERVICING YOUR LAWN MOWER
Spark Plug Service
RECOMMENDED SPARK PLUGS
*Resistor spark plugs reduce interference with radio and TV reception.
NOTICE
Incorrect spark plugs can cause engine damage.
For good performance, the spark plug must be properly gapped and
free of deposits.
1. Disconnect the spark plug cap
and remove any dirt from
around the spark plug area.
2. Remove the spark plug with a
13/16 in (21 mm) spark plug
wrench.
3. Inspect the spark plug.
Replace it if the electrodes are
worn, or if the insulator is
cracked or chipped.
42
NGK
DENSO
REGULAR
BP6ES
W20EP-U
SPARK
PLUG
CAP
RESISTOR*
BPR6ES
W20EPR-U
SPARK
PLUG
SPARK PLUG
WRENCH