Spreader settings for Scotts manufactured spreaders are listed on the back of the bag.
The spreader setting for Scotts Southern Turf Builder when using the EZ Broadcast spreader by Republic is 3.5. If you are using the EZ Drop Spreader by Republic the spreader setting is 6.5.
The Scotts spreader has a dial on there they call a micrometer. The settings on the dial are tested specifically with their products and their spreader. I'm not sure how they compare as I've never seen the Sears spreader. The Scotts Company's consumer services division keeps a list of many spreader types and can often help with setting the spreader before applying their product. You may want to contact them. Look them up at www.scotts.com.
To convert from a Scotts spreader to an Earthway spreader, you would need to adjust the settings to match the recommended application rate for the Earthway spreader. Refer to the Earthway spreader manual for guidance on setting the appropriate spreader settings for the product you are applying. Additionally, ensure that you are familiar with the calibration process for the Earthway spreader to achieve accurate results.
If you send an email to Scotts Consumer service they can actually send you the spreader settings you need. You can contact them through their website and they will email your spreader setting. https://www.scotts.com/smg/contactus/contactUs.jsp?navId=page900108&parentId=page900134
What is the Ortho Spreader 5000 for overseeding
Unfortunately, there is no conversion. The spreaders are calibrated differently.
Yes one can use Vigoro spread with a Scotts spreader. The amount of Vigoro spread that needs to be used must be correlated in retrospect with the size of the area needing the spread.
setting @6
For the Earthway broadcast spreader, you can set it to a setting of around 3.5 to apply Scotts Turf Builder Plus 2 accurately. It's recommended to start at a lower setting and adjust as needed based on the size of the particles in the fertilizer and the coverage you desire. Always refer to the Scotts Turf Builder packaging for specific application instructions.
If you are using the Vigoro Ultra Turf Lawn Fertilizer(29-0-4) with the Scotts Standard Broadcast Spreader then the setting would be 5.
The correct setting for an EZ broadcast spreader by republic is 3. Many persons have used this code and it has worked perfectly for them. Depending on what you are doing you can also use the number 4 setting.