For my 2 cents. The longer the belt, the harder it is to size up a replacement once they stretch some unless you write it down. They stretch more anyway. Once the bearings on those flat idlers start to go, then they start throwing belts and especially the longer belts. A bearing going bad or bent mount or being just a little off line will end up with thrown belts which is something I fight with the rototiller where nothing stays tite because of the vibration. That is the usual problem with the riding mowers that use a lever to tighten the idler pulley held by a spring to start the blades. Of course a thrown belt requires a shut down and sticking your fingers where it is hot.
If you can keep the belt tight all the time and start it with the pto then you are in good shape. The longer the belt and pulley set up, the easier it for cut grass and weeds to jam it up.
Not sure I helped you here but something to think about.
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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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