Spark Plug Change Quick Guide
The full procedure begins on page 3-7 of the service manual.
- Spark plug feeler gauge (wire-type)
- Spark plug gap adjustment tool
- Torque wrench that can cover 16 N-m (12 lb-ft)
- Sockets: 10mm
- Spark plug wrench
- The wrench provided in the 2002-2005 tool kit (Honda P/N 89216-MBG-000) works extremely well.
- The shaft on the wrench fits a 10mm socket or box wrench.
- Four spark plugs
- The standard plug is NGK CR7EH-9 (Honda P/N 98059-57916)
Place bike on center stand.
Remove the right- and left-side maintenance access covers.
Remove the right- and left-side valve cover trim.
Remove the spark plug wires and push them aside.
Spark Plug Replacement
Check the gap of a new spark plug and set it to 0.80-0.90mm (0.031-0.035 in).
- New plugs are typically pre-gapped at the factory, but checking them before installation is a good idea.
Remove the old spark plug.
Install the new spark plug, stopping when the plug makes contact with the seat of the plug hole.
Torque the plug:
- When installing a new plug, turn the plug a half-turn after the sealing washer meets the seat of the plug hole.
- When reinstalling an old plug, torque to 16 N-m (12 lb-ft).
Repeat for the remaining cylinders.
Install the spark plug wires.
Install the left-and right-side valve cover trim.
Install the left- and right-side maintenance access covers.
Check that the engine runs smoothly.
After a ride and the bike has cooled, remove the spark plug wires and inspect the holes for signs of leakage.
- 01 Mar 2008