After mowing your yard for the first time in the spring, you realize you cut a bunch of angles into the lawn. The mowing deck on your Craftsman riding mower is not level. Before you mow the yard again, you need to find some level ground and level your Craftsman mower deck. With an unlevel deck you risk picking up rocks and debris in the yard which could cause damage to the blades on your mower.
Place the mower on level ground and raise the mower deck to its highest position with the mower deck lever on the right side.
Measure the gap between the bottom left and the bottom right of the motor deck and the ground with a measuring stick. Each side should be within ¼-inch of each other. If not, move to the next step.
Locate the lift link adjustment nut located on the side of the mower closest to the ground. Tighten the nut clockwise with a wrench while you hold the measuring stick in place. Stop turning when the height is the same as the other side. This completes the right-to-left adjustment.
Measure the gap between the bottom front and bottom rear of the motor deck and the ground with a measuring stick. The front should be ¼- to ¾-inch lower than the back.
Lower the front of the mower deck if needed by turning the front nuts on the front links (trunnion) counterclockwise equal turns. To raise the front of the mower deck, loosen the bolts on the back of the trunnion and then turn the front nuts n the front link clockwise. Tighten the back bolts against the trunnion. Stop adjusting when the front of the mower measures correctly.