1985-1986 Honda Fourtrax 125 TRX125 Shop Manual, Page 210Get this manual
IGNITION SYSTEM
IGNITION COIL
REMOVA L
Remove the spark plug cap from the spark plug
IGNITION COI L
Disconnect the ignition coil primary wire and reo
move the ignition coiL
INSPECTION
Check the resistances between the leads of the pr imary and secondary coils: Primary coil :