1978 Ski-Doo Shop Manual, Page 282Get this manual
SECTION 05 SUB-SECTION 03, (MERC-O-TRONIC TEST)
NOTE: To test the armature plate components, remove armature plate and ignition coilts) from engineCAUTION: Do not connect test leads together when selector switch is turned to position no1 as this will result in direct battery shortWARNING: When testing any components, place your Merc-O-Tronic analyser as well as the components on an insulated or wooden table topThis will prevent any leakage or shock hazards
ANALYSER TEST,
Prior to testing the circuity or any electrical component, it is first necessary to test the operation and battery power of the analyserTo do this, proceed as follows: 1, Turn the small adjustment screw so that the needle pointer aligns with the "0" reading on scale no, of meter(CD