77C Seed Drill

The model 77C Drill from Haybuster has the ability to plant many different varieties and sizes of seed into all types of planting conditions, ranging from heavy residue no-tillage to minimum tillage and conventional tillage fields.

It plants 7 feet wide and is perfect for smaller wildlife plots and renovating pastures. The 77C is a towable unit and requires just a minimum of 35 hp to operate, depending on terrain and soil conditions.

The two-compartment hopper offers the flexibility of seeding with dry fertilizer, seeding alone, or planting two different seeds.


Haybuster Row Opener

Built for accuracy and versatility.

  • Accurate depth control is maintained by the packer wheels and the parallel linkage.
  • Depth control adjustment.
  • Pressure springs provide 125-300 lbs. (61.24-136.08 kg) of down pressure to adapt to varying soil conditions.
  • Optional native grass attachment includes an agitator, a large convoluted hose, and special seed boot.
  • Optional drop tube assembly with convoluted hoses.
  • Optional coulter depth bands help control disc opener depth in soft soil conditions.
  • The ground drive wheel is now wider assuring accurate seeding in all conditions.

Versatility for Use in a Variety of Seed Bed Conditions

Haybuster’s grain and grass drills are truly all-purpose drills. They will seed a wide variety of seeds, from warm and cool season grasses and legumes to small grains and soybeans. Up to three different products can be metered simultaneously at different rates (when the optional legume box is attached). Choose your combination: three seeds, or two seeds and dry fertilizer. These drills work well in all conditions, including conventional, minimal till, no till, and pasture renovation and reclamation projects.

Two Seed Boxes

The 77C has two seed boxes with individual metering. The third box (front) is the optional legume box. The three seed boxes provide the flexibility to plant up to three different seeds, or two different seeds and dry fertilizer, and can be applied at three different rates.

Infinite Rate Adjustments

Rate adjustments are infinite and simple on both the seed boxes and the legume box. New plastic seed cups.

Easy Pull-Type Transport

Narrow transport width is convenient for narrow gates and roads. Single drill transport width is the same as seeding width. Built-in transport wheels easily pivot 90 degrees to transport position.

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Standard Features

  • Lead Coulter System: Lead coulter blade is offset 1 ½” in front of dual disc, allowing for cutting of trash and penetrating the soil.
  • 7” Row Spacing: All Haybuster drills plant with 7” spacing and each linkage is offset 9 ½” for planting in heavy residue.
  • Infinite Seed Rate Adjustment: Easy to set, each box has infinite seed adjustment for accurate seeding rates, no matter what seed you’re planting.
  • Down Pressure System: Each linkage has simple downpressure adjustments from 135 lbs. for conventional seeding up to 300 lbs. for no-till application.
  • Depth Control Adjustment: Simple, solid depth control adjustment on each linkage.
  • Mechanical Drive System: Wide, aggressive lug-type tractor tire drive wheel for positive ground contact to ensure accurate planting.
  • Cast Iron Linkages: Built of heavy-duty cast steel, the Haybuster drill linkage is even more durable than ever. The cast steel makes the overall drill even heavier, which is always a positive when reseeding pastures and all no-till applications.
  • Three Seed Boxes: The Haybuster drills come standard with two seed boxes with individual metering. The third box (front) is the optional legume box. With the legume box installed, Haybuster drills are capable of planting three different seeds at three different rates.

Optional Features

  • Legume Box: Haybuster drills can be equipped with a third seed box designed for accurately feeding and metering small seeds and legumes. Also available with longer hoses, and seed boots for shallow seed placement.
  • Native Grass Attachment: Haybuster drills can be equipped with dual seed agitators, large seed hoses, and seed boots for accurately planting light, fluffy bearded seeds such as native grasses.
  • Single Bottom Agitators: Prevent bridging of seeds near feed wheels to maintain flow of seeds. It is standard equipment with the Native Grass Kit or can be ordered separately for the rear box.
  • Depth Band: Bolted on to the coulter to limit the maximum seeding depth.
  • Brackets to mount two barrels for extra weight.


Total 3,600 lbs. (1,632.9 kg)
Overall Width 7' 7" (2.31 m)
Height 6' 2" (1.88 m)
Road Clearance 7 in. (17.78 cm)
Front tire type Implement
Front tire size 9.5 L x 14" (35.56 cm)
Rear tire type Implement
Rear tire size 7.60 L x 15 (38.1 cm)
Hydraulic Lift Cylinder Standard equipment
Molded Seed Cups with Wind Gards and  
Tripple Width Seed Wheels in Rear Seed Box  
Seed Box 12 Bushels (423 liter)
Feed System Infinitely Adjustable Meter
Fertilizer Box 930 lbs. (421.8 kg) 11.5 Bushels (405.25 liter)
Walk Board Size 10 in. x 88 in. (24.5 cm x 2.24 m)
Walk Board Type Steel Safety Grating
Seed/Fertilizer Hose Type Rubber Convoluted
Seed/Fertilizer Hose Size 1-1/4 in. (3.18 cm) ID
Seeding Row Spacing 7 in. (17.78 cm)
Seeding Width 7 ft. (2.13 m)
Number of Seed Openers 12
Opener Type Coulter-Disc Offset Opener
Coulter Lead Distance 1-1/2 in. (3.81 cm)
Opener Spring Pressure Range 135 lbs. to 300 lbs. (61.24 kg to 136.08 kg)
Opener Travel Range 10 in. (25.4 cm)
Disc Soil Penetration Range Up to 3 in. (7.62 cm)
Coulter Lead Distance 1-1/2 in. (3.81 cm)
Coulter Size 5/32" x 14 in. (4 mm x 35.56 cm) dia.
Disc Size 3/32" x 14 in. (2.4 mm x 35.56 cm) dia.
Disc Bearings Heavy Duty - Sealed 3/4 in. (1.9 cm)
Double Row Ball Bearings
Types 2 in. x 15-1/2 in. (5.08 cm x 39.37 cm) Steel
Drill Hitch  
Horsepower Requirements 35 HP Minimum - Dependent upon terrain and soil conditions
Tractor Weight – Must be of equal or greater weight than that of the drill filled with seed