I use to pull a 12' international disc with my Ford 7710-II which is 86hp from the factory. It was actually turned up and was putting out 120hp. I farm heavier ground then most so it pulls harder then it should depending on ground conditions. If the ground was too wet you will struggle but if its not a power issue, its a traction issue. When the ground conditions are perfect I can pull that disc with my TN65. A 706 should have no trouble.