Spark Plug Check - Yamaha WaveRunner FZR-GX1800 Service Manual

CHK
ADJ
Power unit

Spark plug check

1. Remove:
1
• Engine cover 1
• Ignition coil bolts 2
• Ignition coils 3
• Spark plugs 4
2
TIP
• Slide the engine cover rearward, and then lift
3
the cover to remove it.
• Be careful not to get water or any other for-
4
eign substances in the spark plug holes.
2. Check:
• Electrodes 1
• Spark plug
3. Measure:
• Spark plug gap a
3-18
Carbon deposits → Clean the spark
plug.
Damage/wear → Replace the spark
plug.
Out of specification → Replace the
spark plug.
Specified spark plug (manufacturer):
LFR6A (NGK)
Spark plug gap a:
0.8–0.9 mm (0.031–0.035 in)
E
1
2
3
4
5
6
7
8
9