PTO not working for post hole attachment on Yanmar 1500 tractor

   / PTO not working for post hole attachment on Yanmar 1500 tractor #11  
The YM1500 is on the sub-compact frame, s a 3PT PHD has to be a sub-compact to work properly. Full size PHD can often flip small sub-compacts with rocks or other items below the surface soil is hit.

It may be difficult to raise a full size PHD up with a subcompact without he auger digging.

I’ve never heard of a PHD flipping a tractor by hitting something below the surface. Happens often?

If the PTO spins but the auger doesn’t, the place where the spinning PTO shaft meets the non-spinning part is where the (sheer) bolt is missing.

If the PTO shaft from the tractor stops spinning when the auger stops, the problem is likely internal to the tractor. Easiest step is to check any linkage adjustments.
 
   / PTO not working for post hole attachment on Yanmar 1500 tractor #12  
It may be difficult to raise a full size PHD up with a subcompact without he auger digging.

I’ve never heard of a PHD flipping a tractor by hitting something below the surface. Happens often?

If the PTO spins but the auger doesn’t, the place where the spinning PTO shaft meets the non-spinning part is where the (sheer) bolt is missing.

If the PTO shaft from the tractor stops spinning when the auger stops, the problem is likely internal to the tractor. Easiest step is to check any linkage adjustments.
Many PHDs prior to the 1980s didn't have a shear pin arrangement, When I run mine, it's well below the 540rpms out the PTO due to this ordeal.

Unplanned tractor wheelies are scary as heck!

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