A not too expensive starting fix for my 4020 gas, was to replace the pathetic Delco 10 MT starter with a Delco 20 MT . It bolts right on and has twice the cranking power of the OEM 10MT.
That starter change took it from a rig that struggled at every start and required the steering wheel wiggle every time, to a rig that starts instantly and actually has to slow down to hit idle speed. The load of the hyd pump means nothing with that powerful starter.
I stayed away from the pump destroking kits because the manual kit is an absolute pain in the donkey with you needing to get down and turn it on / off at every start, and the electric destroker kit is outrageously expensive at near $600. Actually if your able to rebuild a starter, you can convert a 10 MT to a 20 MT by installing a salvage yard 20 MT field housing, bolts and armature in your old 10 MT starter. Otherwise a complete Rebuilt starter from a good company like Wilson, is not all that expensive.
With the 20 MT starter and no destroke kit, turning on that 20 MT rocks the tractor a bit on the tires and it cranks at a steady guestimated 400 rpm. This is with an single Exide Orbital spiral cell AGM battery, kind of a clone of the Optima red top, but $40 cheaper.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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