2-3
INSP
ADJ
SPARK PLUGS
T
R
.
.
SDN2010
SDN2020
SDN2030
ENGINE
SPARK PLUGS
1. Remove:
• Spark plug caps
• Spark plugs
2. Inspect:
• Electrodes 1
Damage/wear → Replace the spark plug.
• Insulator color 2
3. Measure:
• Spark plug gap a
Out of specification → Regap.
Use a wire thickness gauge.
Spark plug gap a:
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
If necessary, clean the spark plugs with a spark
plug cleaner.
Standard spark plug:
BR9ECS (NGK)
Before installing a spark plug, clean the gasket
surface and spark plug surface.
4. Install:
• Spark plugs
Spark plug:
20 Nm (2.0 m • kg, 14 ft • lb)
NOTE:
Finger-tighten a the spark plug before torquing
b it to specification.
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