Posted by Terry Therneau on November 12, 2007 at 04:19:11 from (71.214.128.198):
I just rebuilt the magneto on a B (H-4), and can't seem to time it. With #1 plug out (front of engine), compression stroke via the thumb test, TDC both by timing mark and a flashlight look in the plug hole, I cannot get the magneto to 'trip'. At max advance I need to crank the engine another 20 degrees for the click. The slot in the tractor side coupling is almost horizontal. pointing to about 10 and 4 oclock, at TDC. Using a pliers to turn the mag, it trips with the dogs nearly vertical, so on the face of things it is not surprising that I can't time it. Any insight would be appreciated. It ran before I took the mag off, but would die when it got too hot (we assumed a marginal coil). I can't speak to power: Dad's a retired farmer and just uses it with a belly mower for the large lawn, so it is never taxed. Terry THerneau
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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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