2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 255Get this manual
IGNITION SYSTEM
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 MillDCV minimum The display value differs depending upon the internal impedance of the multi meter
Use 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 MnDCV minimum) MTP07-0286 (U.S.A only) or 07HGJ-0020100 (not available in U.S.A
DIGITAL MULTIMETER
PEAK VOLTAGE ADAPTOR
IGNITION COIL PRIMARY PEAK VOLTAGE
NOTE: Check all system connect ions before inspectionLoose connections can cause incorrect readings