Checking The Spark Plugs - Yamaha F115A Wartungshandbuch

INSP
ADJ
GENERAL
3370
a
3380
Check:
• 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
1.280 at 20˚C (68˚F)

CHECKING THE SPARK PLUGS

1. Check:
• Electrodes 1
Cracks/excessive wear → Replace.
• Insulator color 2
Distinctly different color → Check the
engine condition.
2. Clean:
• Spark plug
(with a spark plug cleaner or wire
brush.)
3. Measure:
• Spark plug gap a
Out of specification → Regap.
Spark plug gap
1.0 - 1.1 mm (0.039 - 0.043 in)
3-22
E
3