John Deere 1010 PTO problems

[cartwrightdan]

Hi there, I`m new to this fourm and this is my first post. I recently bought a 1962 John deere 1010 RU. Engine runs great, and the PTO is live. However, when I hook my bush hog (5 ft Bush hog SQ160) up to it, it will spin the blades, but when I get into long grass the pto stops working. I feel there is a lack of power to the PTO, but have no idea as to how to approach the problem. I have tried increasing the throttle, and various PTO lever positions. This is my first tractor, so I`m on a bit of a learning curve. Any help is appreciated.
Thanks.

[Don87]

Is the PTO on the tractor stopping? Or is the slip clutch on the Bush Hog set so loose that it is slipping?

[cartwrightdan]

Is the PTO on the tractor stopping? Or is the slip clutch on the Bush Hog set so loose that it is slipping?

It's the PTO on the tractor that stops. The slip clutch is tight. I am just not sure what the problem is, or how I would approach trying to adjust the PTO.
Thanks,
Dan