You left a few words out of your sentence, so if you are disconnecting the battery, then yes. Placing the test lamp in a series with the disconnected battery cables is just as sensitive. The battery cable just runs some distance and makes a negative connection to the engine or chassis, both in actuality. I did not go there on the tractor details but I DID consider the fact that that tractor may actually have a ECM. I was going to wait for his results. Adding computers or ECMs and BCMs (body) complicates this test a bit. In fact I have been away from professional auto repair long enough that I would outright tell you that I probably cannot give you the proper instructions to what I call draw or drain check a car like that Subaru. When a computer is disconnected and it is reconnected there will be a couple seconds of a higher power draw until the memory section repowers at which time the draw will drop to an acceptable level.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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