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Ryan® lawnaire® 28 lawn aerators
Ryan® Lawnaire® 28 Aerator

Full-featured and highly maneuverable, compact cam-action aerator delivers unmatched precision coring.

Download Spec Sheet
  • Features vertical coring action.
  • Covers up to 28,000 square feet per hour.
  • Wide, 28-inch aeration path.
  • Powerful 7.5-hp gas engine.
  • Zero-turn radius for increased productivity.

 

Model Number 544874D
Engine 4-cycle, Briggs & Stratton® Vanguardª recoil starter; on/off switch; muffler
Horsepower (@3,600 rpm) 7.5-hp (5.6 kW)
Displacement 13.1 cu. in. (215 cc)
Oil Capacity 1 qt. (.9 l)
Drive Gear box with differential type

 

Unit

 
   
Machine Type Reciprocating self-propelled walk-behind aerator
Clutch Belt Tightener
   

Drive

 
   
Wheel A-section V-belt, #40 O-ring-sealed roller chain
Tines B-section V-belt, #50 O-ring-sealed roller chain
Aerating Width 28 in. (711 mm)
Coring Depth Up to 2.5 in. (64 mm)
Core Diameter 0.75 in. (19 mm)
Aeration Pattern 3.5 in. x 5 in. (89 mm x 127 mm)
Holes per Square Feet Up to 12
Productivity Aerates up to 24,000 sq. ft./hr.
Transport 4 mph (6.4 km/h)
Tines Hollow, tapered, austemper-hardened steel; 3/4 in. (19 mm) diameter tines
Tine Arms 4 arms; 2 tines per arm
   

Tires

 

 

 
Front (1) 10.4 x 4.10/3.50, 4-ply, caster style
Rear (2) 8.7 x 2.80/2.50, 4-ply

 

 

Features

  • Caster front for easy maneuverability
  • Rubber isolated handlebars and spring-assist lift for ease of use
  • Sealed, precision ball bearings at all locations in the tine arms and linkage for low maintenance and durability
  • Extra set of tines standard
 

Dimensions

 
   
Width 34 in. (864 mm)
Length 56.4 in. (1.4 m)
Height 48 in. (1.2 m)
Weight 400 lbs. (181 kg)