PTO Speed

[tw4929]

I have a B-7300 with a small bush hog. When cutting grass, the RPM's are at max in the 540 rpm position which causes the engine to run very hot, almost pegged to red. Is is possible, or recommended, to use the 2500 rpm selection with a lower engine rpm? After about an hour mowing, this little engine is boiling hot.
Thanks for your help,

 

[RMS]

Not sure about the RPM's, but are you checking and cleaning the radiator while brush hogging? The radiators seem to clog up more during brush hogging than any other time for me. There are plenty of posts here on overheating due to clogged radiator fins and the damage that can occur.

 

[GrumpyFarmer]

I would think that machine should run all day with no issues, so long as engine room in good shape and not too much dirt/debris on the radiator fins, and fresh coolant.

when was the last full service last completed?

 

[Russell King]

Changing the PTO speed range and running the engine slower will probably make the engine work harder and overheat faster due to changing the place on the power curve of the engine that it is operating at.

 

[TheOldHokie]

I have a B-7300 with a small bush hog. When cutting grass, the RPM's are at max in the 540 rpm position which causes the engine to run very hot, almost pegged to red. Is is possible, or recommended, to use the 2500 rpm selection with a lower engine rpm? After about an hour mowing, this little engine is boiling hot.
Thanks for your help,

Thst is not a solution for multiple reasons. You have a cooling system problem. Fix it and your tractor wiill mow all day at rated engine speed.

Dan

 

[John D 2]

Before I used it again, I would be inspecting the cooling system for issues.

 

[John T]

Not sure about the RPM's, but are you checking and cleaning the radiator while brush hogging? The radiators seem to clog up more during brush hogging than any other time for me. There are plenty of posts here on overheating due to clogged radiator fins and the damage that can occur.

I agree.

I blow out the radiator screen every time I cut the grass with my BX

It always has clippings and dust in it. Air intake filter as well.

only take a few seconds with an air hose.