1978 Ski-Doo Shop Manual, Page 316Get this manual
SECTION 05 SUB-SECTION 03, (MERC-O-TRONIC TEST) (
TEST NO11 RECTIFIER
1Adjust scale no3: see page9
NOTE: The full wave rectifier use on snowmobiles incorporates diodesTo teqt diodes for shorts and open, each diode must be checked twiceThese checks are accomplished by reversing the polarity of the test leadsCOIL
2Turn selector switch to position no3 CONTINUITY3Connect tests leads as shown on page 370 Red Black