2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 80Get this manual

CHECKING THE SPARK PLUG

CHECKING THE SPARK PLUG 1.Remove: Seat Fuel tank side panel (right) Refer to "SEAT, CARRIERS, FENDERS AND FUEL TANK"2.Remove: Spark plug 3.Check: Spark plug type Incorrect ReplaceStandard spark plug: DR8EANGK

4.Check: Electrode Weardamage ReplaceG Insulator Abnormal color ReplaceNormal color is medium-to-light tan color5.Clean the spark plug with spark plug cleaner or wire brush

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives