Adjust the settings on a Scotts Speedy Green lawn spreader by locating the adjustment tool and placing it on the correct setting for the lawn product you are using. Newer Scotts Speedy Green lawn spreaders use a rotary knob for adjustments, while older models feature an adjustable blade.
The numbers on the spreader's adjustment dial or blade correspond to the size of the spreader opening. The larger the number, the greater the opening's size and the more product the spreader puts down at one time. Refer to the application information on the product you are using to find the correct opening size for your lawn.