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CHK
GENERAL
ADJ
2
NOTE:
• Batteries vary among manufacturers.
Therefore, the following procedures
may not always apply. Consult your
battery manufacturer's instructions.
• First, disconnect the negative lead, then
the positive lead.
Check:
•
•
CHECKING THE SPARK PLUGS
1. Check:
1
•
•
2. Clean:
•
3-22
Electrolyte level
Below the minimum level mark →
Add distilled water to the proper
level.
Electrolyte specific gravity
Less than specification → Recharge
the battery.
Electrolyte specific gravity
1.28 at 20°C (68°F)
1
Electrodes
Cracks/excessive wear → Replace.
2
Insulator color
Distinctly different color → Check
the engine condition.
Color guide
Medium to light tan color
Normal
Whitish color
•Lean fuel mixture
•Plugged jet(-s)
•Air leak
•Wrong setting
Blackish color
•Rich mixture
•Excessive oil usage
•Defective ignition system
•Defective spark plug
Spark plug
(with a spark plug cleaner or wire
brush.)
E
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