2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 472Get this manual
IGNITION SYSTEM (After '05)
IGNITION SYSTEM INSPECTION
NOTE: If there is no spark at the plug, check all connections for loose or poor contact before measuring the peak voltage Use the recommended digital multimeter or commercially available digital multimeter with an impedance of 10 MiiDCV minimum The display value differs depending upon the internal impedance of the multimeterUse the peak voltage tester or connect the peak voltage adaptor to the digital multimeterTOOLS: IgnitionMate peak voltage tester Peak voltage adaptor with commercially available digital multimeter (impedance 10 MiiDCV minimum) MTP07-0286 (U.S.Aonly) or 07HGJ-0020100 (not available in U.S.A DIGITAL MULTIMETER
PEAK VOLTAGE ADAPTOR