B
A
UTILITY
MAINTENANCE
Spark Plug Inspection
You should periodically remove and
inspect the spark plug. Dirty or worn
spark plugs can cause poor perfor-
mance.
å Spark plug
∫ Spark plug cap
1. Check for discoloration and heavy
Y-516
carbon deposits.
electrode color will be tan. If it is
not, replace it.
2. Check the spark plug type, and
check the spark plug gap with a
feeler gauge.
Standard spark plug:
BPR2ES or BPR4ES
Spark plug gap:
Y-37
0.028 ˜ 0.031 in (0.7 ˜ 0.8 mm)
å Gap
3. Clean the gasket and plug sur-
faces and install the spark plug fin-
ger tight before tightening to the
following torque:
Spark plug torque:
14.5 ft . lb
(20 Nm, 2.0 m . kg)
WARNING
When removing or installing the
spark plug, be careful not to dam-
age the insulator. A damaged insu-
lator could allow external sparks,
which could lead to explosion or
fire.
1
2
3
The normal
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8
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8-5