Spark Plugs - Yamaha F100A Wartungshandbuch

INSP
ADJ
GENERAL
a
1. Check:
Electrolyte level
Below the minimum level mark 1 →
Add distilled water to the proper
level.
Electrolyte specific gravity
Less than 1.28 → Recharge the bat-
tery.
Electrolyte specific gravity:
1.28 at 20 ˚C (68 ˚F)
NOTE:
Batteries vary
Consult your
instructions.
First, disconnect the negative lead, then
the positive lead when removing the bat-
tery from a boat.

Spark plugs

1. Inspect:
Electrodes 1
Cracks/excessive wear→ Replace the
spark plug(-s).
Insulator 2
Damage → Replace the spark plug(-s).
2. Clean:
Spark plugs
(with a spark plug cleaner or wire
brush)
3. Measure:
Spark plug gap a
Out of specification → Regap.
Spark plug gap:
1.1 mm (0.043 in)
3-17
among manufacturers.
battery manufacturer's
E