Checking The Spark Plugs - Yamaha E60HMHD Wartungshandbuch

GENERAL
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:
• Electrolyte level
Below the lower level 1
Add distilled water to the proper level.
• Electrolyte specific gravity
Less than specification
battery
Electrolyte specific gravity:
1.280 at 20°C (68°F)

CHECKING THE SPARK PLUGS

1. Check:
• Electrodes 1
Cracks/excessive wear
• Insulator color 2
Distinctly different color
engine condition.
Color guige:
Medium to light tancolor
Normal
Whitish color
• Lean fuel mixture
• Plugged jet(-s)
• Wrong setting
Blackish color
• Rich mixture
• Excessive oil usage
• Defective ignition system
• Defective spark plug
2. Clean:
• Spark plug
(with a spark plug cleaner or wire
brush)
3-24
E
Recharge the
Replace.
Check the