Instructions / Assembly

36
SERVICING YOUR PUMP
SPARK PLUG SERVICE
In order to service the spark plug, you will need a spark plug wrench
(commercially available).
Recommended spark plug: BPR6ES (NGK)
W20EPR-U (DENSO)
Incorrect spark plugs can cause engine damage.
For good performance, the spark plug must be properly gapped and
free of deposits.
Allow the engine to cool before servicing the spark plug.
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-inch 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 suitable gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
The gap should be:
0.028–0.031 in (0.7–0.8 mm)
SPARK PLUG WRENCH
SPARK PLUG CAP
SIDE ELECTRODE
0.028–0.031 in
(0.7–0.8 mm)
SEALING WASHER
INSULATOR
31YG0610.book Page 36 Monday, March 24, 2014 8:39 AM