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The Tar River SAYA507 is a 78-inch no-till drill with 10 planting rows on 7.5-inch spacing. Front coulters cut residue ahead of spring-loaded double-disc openers, and the full-width cage roller firms the soil behind the openers.
Separate stainless-steel boxes and meters let the drill apply seed and fertilizer in the same pass. Planting depth adjusts from 3/4 to 2 inches. The three-point hitch fits Category I and Category II tractors, with a listed minimum of 35 horsepower.
| Specification | Value |
|---|---|
| Working width | 78 in. |
| Rows and spacing | 10 rows on 7.5-in. spacing |
| Planting depth | 3/4-2 in. |
| Openers | Front coulters and spring-loaded double discs |
| Seed and fertilizer cups | 10 each |
| Hoppers | Separate stainless-steel seed and fertilizer boxes |
| Hitch | Category I/II three-point |
| Listed minimum tractor power | 35 HP |
| Listed weight | 1,420 lb. |
For the specific drill, confirm the box capacities and meter package, then calibrate seed and fertilizer separately for the products and rates being applied. Check tractor lift capacity and ballast with the drill loaded rather than relying on horsepower alone.
Pay by card at checkout, or choose Reserve for $0. We’ll confirm the product, selected options, availability, taxes, and pickup or delivery. Reservations are held for 7 days.
After confirmation, you can arrange payment by check, ACH or wire transfer, or discuss financing. Financing may be available when at least $5,000 of qualifying equipment is financed, subject to credit and underwriting approval.
We ship parts and equipment nationwide by parcel or freight. Pickup is available at our Henderson, Iowa store. We’ll confirm timing and the fulfillment plan with you before your order is released.
Talk with our equipment and parts team before you order. We can help compare models, explain the listed configuration, or review a part number with you.
Our Henderson, Iowa team includes dedicated parts and warranty staff. If you need a replacement part or help with a manufacturer warranty question, contact us with the model and serial number of your equipment.
Call 712-566-1033 or use the specialist button above. Meet our support team.

Family owned in Henderson, Iowa
“Excellent service before and after the sale, very knowledgeable about the products they offer.”
Family-owned since 1980
The Keast family's farming roots in Southwest Iowa reach back to the 1870s, when Thomas Keast settled near Macedonia. Russ began selling equipment on the family farm in 1980, bringing firsthand experience and a practical understanding of how machinery needs to perform in the field. Today, Keast Enterprises serves customers across the country, with the same dedication to fair prices, dependable support, and quality products.
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Product details, availability, and features may change. Contact us if you need us to confirm any detail before ordering.