pto speeds,,,,what is faster one for?

he also advised to not use diff. lock unless stuck. your explaination app. thanks vman

The 1000 rpm speed can carry a lot more hp than can the 540. What the other posters said---75-80 hp is about tops for 540 rpm! While even 95 or 100 hp is possible with 540, you are beginning to enter the region where you run the risk of breaking the pto shaft. Many tractors 115 hp up originally only came with the 1000 rpm setting? They weren't expected to be used with low hp requirement equipment.

One of the most resisted tractor features of all time, however was the 1000 rpm pto! For some reason, it was instantly hated when it came out, sometime around 1959.

Out of curiousity, what tractor are we talking about here, and what sorts of implements?

On small tractors, _most_ implements are designed for 540 pto, a very few things were special built for 740 or 1000 rpm. I believe these are perhaps more common in Japan & China, and the different speed options came along for the ride, tho rarely used here.

Some folks will throttle the tractor back to 1/2 engine speed & use the 1000rpm to pull light loads, saving some fuel. Just be careful not to: 1. Lug your engine down & make it work too hard; 2. Speed up the engine speed while the pto is engaged & wreck something. You do not ever want to run a 540 implement at 1000rpm. Bad things happen.

--->Paul