PTO= 540rpms

[pitt_md]

You do not have to run at "PTO Speed". It's a good idea to not over load the engine though. I personally do not like reving the engine to max RPM's when it's not required.

 

[ccsial]

What's the engine rpm that's required to produce 540 rpm at the pto?

There is usually a mark on the tach for 540 PTO speed.

I also engage my PTO very slowly at idle and then slowly ( about 5 seconds) bring it to PTO speed.

 

[Happyman]

I also go for the "feather the PTO in" process. At about 1500 RPM I SLOWLY engage the PTO until fully engaged. Then I raise the throttle until my dash gauge reads 540 PTO (Grand L 3940 digital dash readout).
Then it's "turn and burn"

 

[JohnDeere4300]

When using a bush-hog, i have my throttle as low as it will go when i turn on the PTO.

Then i will slowly increase the throttle to the RPMS that are needed for the job. If i am cutting tall grass then i will run my RPMS in the 540 mark.

If i am cutting short grass, weeds etc... i will run slower RPMS as long as its getting the job done.

 

[kenmac]

I always run mine at 540 RPM no matter what.. I enguage mine at idle or 300-500 engine RPM'S

 

[Oldmax]

If you want to shorten the life of a deisel engine run it at a lower speed that is designed to run . Will not hurt to run engine at speed the PTO is designed to run . Is realy better for it keeps colling fan and engine oil working . These engines tend to over heat when pulling a load at lower RPM's. Also the emplement is designed to work at that RPM and it will NOT do a good job at a lower RPM. If you are going to fast in the gear drop one.

 

[pat32rf]

On my JD4300HST when you pull the PTO lever it INSTANTLY engages, no way to do it gently. The same when you disengage. I normally pull the lever at idle then rev it up.
My old Bota had a two speed PTO so I could run the mower at a high speed but lower engine speed if the load was light. I could also use the clutch to engage/disengage the PTO, even though it also had HST

 

[Brad_Blazer]

Especially with a "bush hog" you need to engage the PTO at a low speed or the blades will backspin and clack together when the carrier starts turning.

 

[JohnDeere4300]

Especially with a "bush hog" you need to engage the PTO at a low speed or the blades will backspin and clack together when the carrier starts turning.

I have had mine go together, and have to find a place where i could back up with the bush hog hanging over a bank, so i could see under it better, then try to get them loose.

 

[Predator]

It is a good idea to lower the engine rpm and let the clutch out slooooowly when engaging the PTO, or you may break the shear pin....don't ask me how I know.