Home › Forum › Ask A Member › Stevens ST-75 Tester first time user questions › Re: Stevens ST-75 Tester first time user questions
When under test by the Stevens unit, the spark Is not generated under compression. So there is less load on the coil than when trying to run a motor. If there is leakage with you test it, it will be worse under load. The coil may work in the motor, but not dependably.
If the condenser tests bad, it’s probably bad. I’ve tested new ones that failed, and when I tried them in a motor, they did not perform well.
The Zephyr coil has only one secondary winding, but instead of grounding one end to the same ground as the primary, both ends of the secondary come out of the coil for high tension wires to attach. I don’t have a Stevens 75, but I do have one of the older Stevens units. The wire that usually goes to the mag plate (ground) just goes to one of the high tension terminals. The one that normally goes to the spark plug wire just goes to the other one.
Tom