SERVICING YOUR LAWN MOWER
39
Spark Plug Service
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.
RECOMMENDED SPARK PLUGS
REGULAR
RESISTOR*
NGK
BP6ES
BPR6ES
DENSO
W20EP-U
W20EPR-U
*Resistor spark plugs reduce interference with radio and TV reception.
SPARK PLUG
SPARK
PLUG
CAP
SPARK PLUG WRENCH