2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 299Get this manual
IGNITION SYSTEM
IGNITION SYSTEM INSPECTION
If there is no spark at the lu g, check all connectio ns for loose or poor contact before measuring th peak oltage Use the recommended digital multimeter or commercially avail ab le digital mu ltimeter with an imped ance of 10 MUlDCV minimum The display value differs depending po the int ernal impedance of the multimeterUse the pea vol tage est er or con nect the peak volt age ada pt or he digital multi meterTOOLS: IgnitionMate peak voltage tester Peak voltage adaptor with commercially available digital multimeter (impedance 10 MH DCV minimum) MTP07-0286 (U.S.Aonly) or 07HGJ-0020100 (not available in U.S.A DIGITAL MULTI ETE R
PEAK VOLTA GE ADA PTOR
IGNITION COIL PRIMARY PEAK VOLTAGE