YOU YOURSELF can perform a simple test to see if its BAD if you have an ohm meter, HOWEVER that wont tell you if its really GOOD............
An ohm meter across its small + and - terminals should read in the vicinity of 1.25 to under 2 ohms BUT IF ITS AN OPEN CIRCUIT THE COIL IS BADDDDDDDDDDDDDDDDD
An ohm meter placed between the HV output terminal and one of the small terminals should read in the neighborhood of say 5000 to 10000 ohms depending on the coil, BUT IF ITS AN OPEN CIRCUIT ITS BADDDDDDDDDDDD..
HOWEVER even if it passes BOTH tests above (primary and secondary winding contuniuty) it can still fail under HV and/or high temp conditions which it often does cuz HV breakdown happens i.e. a spark will jump where its NOT supposed to due to insulation failure.
You can also run a bench test by applying but then opening a connection of 6 volts across its small + and - terminals and each time the circuit is broken a HV spark should jump from a coil wire attached to its HV terminal to a battery post. You can do the same type coil test on the tractor
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Today's Featured Article - History of the Cockshutt Tractor - by Danny Bowes (Dsl). The son of a very successful Toronto and Brantford, Ontario merchant, and himself quite an entreprenuer, James G. Cockshutt opened a business called the Brantford Plow Works in 1877. In 1882, the business was incorporated to become the Cockshutt Plow Company. Along with quality built equipment, expedious demand and expansion made Cockshutt Plow Works the leader in the tillage tools sector of the farm equipment industry by the 1920's.
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