Check the spark plugs at proper mileage intervals. Refer to Maintenance Scheduling → Service Records → Regular Service Intervals: 2017 V-Rod Models.

CAUTION

Do NOT pull on any electrical wires. Pulling on electrical wires may damage the internal conductor causing high resistance, which may result in minor or moderate injury. (00168a)

Before installing spark plugs, check the spark plug gap. If necessary, adjust the gap to 0.89 mm (0.035 in).

Make sure your motorcycle has the correct spark plug. Use a 10R12A spark plug.

Spark plugs must be tightened to the torque specified for proper heat transfer. Tighten spark plugs to 23 N·m (17 ft-lbs) per spark plug.

NOTE

If a torque wrench is not available, tighten the spark plugs finger-tight. Tighten an extra one quarter turn with a spark plug wrench.
The V-Rod has plug-top coils. To inspect the spark plugs, the coils must be removed. Consult the V-Rod Service Manual for the proper service procedure.