Checking The Spark Plug - Yamaha YFM7FGPW Service Manual

CHECKING THE SPARK PLUG

EBS00057
CHECKING THE SPARK PLUG
1. Remove:
• right side panel
Refer to "SEAT AND SIDE PANELS".
2. Disconnect:
• spark plug cap
3. Remove:
• spark plug
4. Check:
• spark plug type
Incorrect → Change.
5. Check:
• electrode 1
Wear/damage → Replace.
• insulator 2
Abnormal color → Replace.
Normal color is a medium-to-light tan color.
6. Clean:
• spark plug
(with a spark plug cleaner or wire brush)
7. Measure:
• spark plug gap a
Use a wire gauge or thickness gauge.
Out of specification → Regap.
8. Tighten:
• spark plug
NOTE:
_
Before installing a spark plug, clean the gasket
surface and plug surface.
9. Connect:
• spark plug cap
10.Install:
• right side panel
Refer to "SEAT AND SIDE PANELS".
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CHK
ADJ
Standard spark plug
CR8E/NGK
Spark plug gap
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
13 Nm (1.3 m · kg, 9.4 ft · lb)