Try these steps. 1. Tire pressure 10 rear, 25 front. 2. Set deck lever to mid cutting height. 3. Loosen front adjuster until it is loose. 4. Loosen left hand adjuster nut and set it in the middle of the range of travel. 5. Bounce the deck a couple of times to make sure everything is loose. 6. On a level concrete surface, with both blades set perpendicular to the direction of travel, measure the outside tip of each blade. I use a threaded rod coupler with a bolt screwed in. I’m not worried about the exact measurements in inches, just want the two tips to be the same. 7. Raise or lower the left hand adjusting nut until both tips are the same. 8. When they are the same bounce the deck a couple of times and check tips again. If not repeat step 7. 9. If they are the same rotate left hand blade 90 degrees and tighten front adjusting nut until the front rod is tight. 10. Check the left hand blade tips front and back. 11. Now tighten the front adjusting nut until the front blade tip is 1/8”-1/4” lower than the back blade tip. When you finish this the deck should be ready to go. Finally I’m assuming that you have removed each blade and checked to see that they are not bent. Wouldn’t be the first time I’ve found bent blades to be the leveling problem.
