Yes, I've been suspecting the low cranking voltage. Before when I had the OEM low-ohm, so-called "6 volt" coil - cranking at 8 volts was not an issue. A 6 volt coil is very happy with 8 volts. Now - with the 3.3 ohm so-called "12 volt" coil - maybe it IS an issue.
This crawler was in a fire 20 years ago. I've long suspected a slight field-coil problem in the starter. It's never sounded quite "right." 20 years ago I put new brushes, holders, starter drive and solenoid in it and it's worked good enough ever since. But since battery voltage drops to 8 volts , I'm wondering if it draws more then it should. 1010/2010 gas starters are not common and nothing else I know of fits - so I've never come across another. On the other hand -for my Deere 1020 diesel - I just bought a brand new gear-reduction starter for $95, tax free, no shipping charges. Hard to beat that price for a brand new starter (not rebuilt). But the 1010/2010 series is odd-ball and no aftermarket starters around. I don't even know if I can buy field coils for the Delco that's in the 1010. Maybe I'm going to have to check sometime. I know a diesel tractor with the correct batteries and cables is supposed to drop to 9 to 9.5 volts when cranking. So, 8 volts in this gasser sounds like an excessive drop. I've checked battery voltage directly at the battery so I know cable or connections are not to blame. It would have to be a defective/undersized battery or a starter drawing too much current. Or I guess, and engine turning too hard which I know is not the issue.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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