1979 Ski-Doo Supplementary Shop Manual, Page 140Get this manual
SECTION 05 SUB-SECTION 03 (MERC-O-TRO NIC TEST)
TEST NO.3 IGNITION COIL RESISTANCE (SECONDARY)
PROBE TEST METER SET SCALE 4-6
COIL POWER TEST DISTRIBUTOR RESISTANCE COIL CONTINUITY CONDENSER CAPACITY