Bush Hog Issue

[rocknrod]

Be sure you are running 540 pto rpm.

Keep the Engine RPM over 2K.

 

[shpa72]

This may sound crazy but I have seen it, newer cheap rotary mowers (commonly referred to as brush hogs but not referring to that brand here) have flat blades instead of blades with the upturned trailing edge behind the sharp edge. They, the flat blades, leave these clumps. The upturned blades, as all lawn mowers and lawn tractors have, are designed that way to created a vacuum lifting action which pulls the grass you've run over back up and cleanly cut it, the flat blades cannot do this so you generally see these clumps standing randomly all over the fields in thick grass. They work fine in briars and brush.

 

[shpa72]

This is a picture of the flat blade.





This is an example of the up turned blade.

 

[shpa72]

In this picture the blade at the far right would have the most lifting action and leave the least clumps. The ones with just the corner turned up have less lifting action but are still better than flat blades.

 

[LittleBlueTractor]

Just some random thoughts ... you could look under and make sure the blades all swing free. Also make sure the deck is traveling fairly level when you're running. It won't cut well if running tipped up or back. Also, you do need to be running fairly close to the engine speed that produces 540rpm ... if you judge it by ear it will sound like it's going *really* fast.

My sales guy said to tip mine down at the front. Any other opinions here? I just want to get it straight. Also, mine has the flat blades....

 

[LD1]

My sales guy said to tip mine down at the front. Any other opinions here? I just want to get it straight. Also, mine has the flat blades....

Yep. it is typical to set them 1-2" lower in the front

 

[Midniteoyl]

Yep.. Tilt down in front.. Same thing on your belly mowers and mower decks - Tilt down in front. Just not as much