2001 Yamaha YFM660 Raptor Factory Service Manual, Page 289Get this manual

2001 Yamaha YFM660 Raptor Factory Service Manual, Page 289

IGNITION SYSTEM

5.Spark plug cap resistance
Remove the spark plug capConnect the pocket tester1k) to the spark plug cap

Check that the spark plug cap has the specified resistanceSpark plug cap resistance: 10 at 20 (68 F) MEETS SPECIFICATION