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What rpms should I be using when running the box blade or guess anything on rear pto? Should I also have it 4WD?
 

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What rpms should I be using when running the box blade or guess anything on rear pto? Should I also have it 4WD?
If you have the rippers down and are moving ground your going to want all of the HP your tractor has. 2200-full rpms and all four tires pulling.
 

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You have 3 different things going on here so I'l break my response out that way.

For PTO driven attachments: These are designed to operate assuming that the PTO is running at a specific speed. Typically, an attachment running off of your rear PTO is designed to operate with that PTO shaft running at 540RPM. Your owner's manual should tell you what engine RPM will give you 540RPM at the rear PTO. Depending on your tractor, you may have a marker on your dash for that as well. I'd suggest staying with that until/unless you are very familiar with your attachment and know exactly what you can do with it. The same sort of thing applies to your mid-PTO if you have one. It'll be a different speed but the same principle applies.


For 3-point attachments: Again, this is largely going to depend on what you're doing and how comfortable you are with your setup. But "normally" (whatever that is!) you can run at a fairly high RPM to give you pulling power. You'll def want that if you are tearing up compacted earth (i.e. your box blade!) but you may want to slow things down if you are doing something like just leveling out a pile of loose dirt or compost.


4WD: Use it when you need it. Start out in 2WD and if you find your rear wheels are spinning or slipping, engage 4WD.
 

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I'm usually 2400-max depending on how much material I'm putting in the box. You run out of traction before you run out of power. I always run 4wd low when using it. (4' boxblade)
 
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