Checking The Ignition Timing - Yamaha FJR13AY 2009 Service Manual

ECA13320
NOTICE
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.
4. Check:
• Spark plug type
Incorrect → Change.
Manufacturer/model
NGK/CR8E
Manufacturer/model
DENSO/U24ESR-N
5. Check:
• Electrode "1"
Damage/wear → Replace the spark plug.
• Insulator "2"
Abnormal color → Replace the spark plug.
Normal color is medium-to-light tan.
6. Clean:
• Spark plug
(with a spark plug cleaner or wire brush)
7. 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)
8. Install:
• Spark plug
Spark plug
13 Nm (1.3 m·kg, 9.4 ft·lb)
TIP
Before installing the spark plug, clean the spark
plug and gasket surface.
9. Connect:
• Spark plug
10.Install:
• T-bar
Refer to "GENERAL CHASSIS" on page 4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
EAS20700

CHECKING THE IGNITION TIMING

TIP
Prior to checking the ignition timing, check the
wiring connections of the entire ignition system.
Make sure all connections are tight and free of
corrosion.
1. Stand the vehicle on a level surface.
TIP
Place the vehicle on the centerstand.
2. Remove:
• Right side cowling
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• T-bar
Refer to "GENERAL CHASSIS" on page 4-1.
3. Remove:
• Timing mark accessing plug "1"
(along with the copper washer)
4. Connect:
• Timing light "1"
(onto the spark plug lead of cylinder #1)
• Digital tachometer
(onto the spark plug lead of cylinder #1)
Timing light
90890-03141
Inductive clamp timing light
YU-03141
3-12
ENGINE