F3990 deck height

AllDodge

Member

Equipment
M9540 RTV1100
Jan 19, 2019
191
0
16
South Central, ky
The mower just has not been cutting at the height the diagram is showing, or at least as I read it. Originally set both front and rear at B-X which should be 4 inches. Have put over 100 hours on the mower and it just doesn't cut smooth and does some scalping.

Today I check air pressure in the tires and place mower on concrete floor. Then take a measuring tape to the bottom of the deck and I'm seeing 5.25 inches on the front, and bit less then 3 on the rear.

I start adjusting from measuring the blades under the deck until I get it at 3.75 on front and rear of the blades. To do this the front is on C-Y (3.5) and B-YII (4.75) on the rear. The deck is level front to rear.

So what am I missing?
 

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