Checking The Spark Plugs - Yamaha F6AMH Wartungshandbuch

GENERAL
DO NOT SMOKE when charging or


handling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
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 minimum level
distilled water to the proper level.
Electrolyte specific gravity


Less than specification
the battery.
Electrolyte specific gravity:
1.280 at 20°C (68°F)

CHECKING THE SPARK PLUGS

1. Spark plug type:
BR6HS-10


2. 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

3. Clean:
Spark plug


(with a spark plug cleaner or wire
brush).
3-23
a
Add

Recharge

Replace.

Check the