The 350 and 450 movers are a darned good cutting mower, but the wobble box is a weak point, and often fails badly to the tune of lots of $$$$$$.
There is a pin (Key #5) that that knife drive lever pivots around that is clamped into the base of the wobble box casting.
90% of the time the mower has got to this point, the clamp area in the casting is wallowed out or broken off. A new casting, key #13, part #AE31780 is over $700.00.
SURE hope your's hasn't gotten to that point, and that a new pin (#25), bearing (#29) and a couple of bearing cups (#5) will fix it up for you!
I have 5 mowers with that same drive (#450's) laying around, with the casting bad in all of them!
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Today's Featured Article - Threshin Demonstration - by Michael Delaney. Introduction I bring you greetings from Prince Edward Island, Canada. We are Canada�s smallest province but big on farming. Maybe you�ve heard of us. Potatoes are our biggest crop. However, there is lots of mixed farming here also. I have a small mixed farm with 25-30 cattle. I make very good use of old machinery. I have a 135 MF Diesel, Farmall H and 1/3 share in an Allis B. I have complete lines of tillage and harvest equipment, and a saw gear etc. I have everything one would
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