Grass seed settings for a Red Devil 0-10 Broadcast Spreader

Question edited for clarity.

15 for over-seeding. Lots here including a video.

https://www.google.com/search?q=Sta-Green+spreader+settings+for+coated+seeds

Settings for Spreading Grass Seed With a Lawn Spreader

https://www.hunker.com > ... > Lawn Basics
Agway's sun and shade grass seed grows well in partial shade to full sun. Agway recommends a setting of 15 for overseeding and 18 for a new lawn when using ...

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the typical number on most spreaders is 23

When spreading seed, the setting is not important. Adjust it high and go for a light dusting of VISABLE seed on the preped soil. Then rake in lightly. You can never put too much seed down unlike fertilizer. Good luck, and keep it wet for 30 days for best results!

If you are planning to overseed or reseed your yard, it would be best to use a rotary spreader instead of a drop spreader. When spreading seed set the spreader on 2 or 3, It really depends on the square footage of your yard. If you purchased seed from a local nursery or hardware store, read the bag and it will have the correct spreader setting on the bag. If you just bought a few pounds and the clerk weighted it up for you, you probably can call and ask the clerk for the spreader setting. But I'm pretty sure setting 3 will work just fine.

Scotts Basic Broadcast Spreader can be use to apply grass seed, fertilizer and other lawn care products. Be sure you are following all label instructions on the products you are using.
Hilary @ Scotts

Below is a list of spreader settings. You may want to call Scotts at 800-543-8873 and verify the product you are using is able to be used in a hand held spreader.

• For fine grass seed (blue, rye, fescue) use setting 1
• For coarser seed (tall fescue) use setting 2
• For light fertilizer (Scotts fertilizers at a regular rate) use setting 3
• For heavy fertilizer (Scotts fertilizers at a heavy setting) use setting 4
• For pelletized fertilizer and ice melt products use setting 5

Hilary @Scotts

A reasonable spreader setting for a hulled Bermuda seed would be a setting of a 2.
Hilary @ Scotts

Absolutely. If you use Scotts turf seed, it will have the settings marked right on the bag. Very handy.

Scott's no longer makes this handy helper. Do this, get some white sand and mix it with the grass seed. It will mark your lawn and help you see where you spread the seed or fertilizer. Joe