Thank you for the reply. I'm sure it had regular pneumatic tires when it was new, but someone put foam in these. They are extremely heavy, and nearly bald. It's a PM-400 Model 98014, Serial 637858, Yanmar 3TNA72E-NC 22 HP. The parts list for this machine shows 23x8.50x12 for the 22 HP, and 23x10.5x12 for the 30 HP. It also shows both using the same wheel. I just got this machine, so plead Not Guilty on putting foam in the tires. The wheel's center hole is 3 1/8, the offset is 3, and it has 5 - 7/16 bolts on 4 1/4 center - everything I've found is different in one or more of these measurements. I've cut foam tires off smaller wheels in the past, and it's not fun, so I was hoping someone had a better solution.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let’s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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