Checking The Fuel Line; Checking The Spark Plugs - Yamaha 2011 FZ8NA(C) Service Manual

EAS21030

CHECKING THE FUEL LINE

The following procedure applies to all of the
fuel, vacuum and breather hoses.
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
2. Check:
• Fuel hose "1"
• Vacuum hose "2"
• Breather hose "3"
• Fuel tank drain hose "4"
Cracks/damage → Replace.
Loose connection → Connect properly.
ECA14940
Make sure the fuel tank breather hose is
routed correctly.
TIP
Before removing the fuel hoses, place a few
rags in the area under where it will be
removed.
3. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
PERIODIC MAINTENANCE
EAS20680

CHECKING THE SPARK PLUGS

The following procedure applies to all of the
spark plugs.
1. Remove:
• Radiator upper cover
• Radiator upper bolt
• Radiator lower bolt
Refer to "RADIATOR" on page 6-1.
2. Remove:
• Ignition coils
• Spark plugs
ECA13320
Before removing the spark plugs, blow
away any dirt accumulated in the spark
plug wells with compressed air to prevent it
from falling into the cylinders.
3. Check:
• Spark plug type
Incorrect → Change.
Manufacturer/model
NGK/CR9E
4. Check:
• Electrode "1"
Damage/wear → Replace the spark plug.
• Insulator "2"
Abnormal color → Replace the spark
plug.
Normal color is medium-to-light tan.
5. Clean:
• Spark plug
(with a spark plug cleaner or wire brush)
6. Measure:
• Spark plug gap "a"
(with a wire thickness gauge)
Out of specification → Regap.
Spark plug gap
0.7–0.8 mm (0.028–0.031 in)
3-4