2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 332Get this manual
IGNITION SYSTEM With the connector connected, connect the peak voltag8 tester or adapter probes to the ignition coil primary terminal and body grou nd
TOOLS; MTP070286 (U.S.Aonly) or Peak voltage tester Peak voltage adapter 07HGJ0020100
(not availa ble in U.S.A with commercia lly available
digital multi meter (impedance 10MnDCV minimum)
CONNECTIONBlackyellow (+1Body ground H
Shift the transmission into neutral and turn the igni-
tion switch to ONCrank the engine with the starter motor and read ignition coil primary peak vollage