Checking The Spark Plugs - Yamaha Z200N Service Manual

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Table of Contents

• 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

• Electrodes 1

Cracks/excessive wear → Replace.

• Insulator color 2

Distinctly different color → Check the

engine condition.

Medium to light tan color

Whitish color

• Lean fuel mixture

• Plugged jet(-s)

• Wrong setting

Blackish color

• Rich mixture

• Excessive oil usage

• Defective ignition system

• Defective spark plug

• Spark plugs

(with a spark plug cleaner or wire

Table of Contents

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