
The unit also boasts a 1-inch thick, 21-inch diameter cutting wheel, letting you grind faster and smoother than ever before. The SP4012 features heavy-duty construction (1,550 pounds), hydraulic steering and four-wheel stance. This combination offers unmatched stability and maneuverability.
| Engine options | 27 HP Kohler Command Gas 35 HP Briggs-Vanguard Gas 33 HP Kubota Diesel |
| Cutter depth below ground | 13" |
| Cutter height above ground | 34" |
| Cutter head swing | 40" arc |
| Tongue extension | 30" |
| Number of teeth on cutter wheel | 20 |
| Cutter wheel diameter with teeth | 21" |
| Cutter wheel thickness | 1" Blanchard ground |
| Jack shaft bearings | 1 7/16" w/ Kohler 1 11/16" w/ Briggs-Vanguard or Lombardini |
| Cutter wheel bearings | 1 7/16" w/ Kohler 1 11/16" w/ Briggs-Vanguard or Lombardini |
| Chip containment volume | 16 cu. ft. |
| Fuel tank capacity | 10.3 gallons |
| Hydraulic tank capacity | 3.6 gallons |
| Tire size | 8 ply 5.70-4 |
| Machine width | 35" |
| Machine height | 46" |
| Machine length | 8' 6" |
| Total weight | 1550 w/ Kohler 1650 w/ Briggs-Vanguard or Lombardini |
| Paint | Dupont Imron with epoxy Primer |

| Large Cutter Wheel, 21-inch diameter & 1-inch thick, provides maximum cutting power and flywheel momentum. |
| A Variety of Powerful Engines |
| Feather Touch Hydraulic Controls make the SP4012 easy to operate and provide optimum user control. |
| Tapered Roller Bearings on jack shaft and cutter wheel provide long service life and reduced maintenance. |
| Proprietary Dual Motor Ground Drive eliminates troublesome chains, axles and axle bearings. |
| Optional Dual Wheels are quickly removed. |
This compact machine has a width of 35 inches, allowing it to fit easily through standard backyard gates. The SP4012 incorpo rates many of the features found in larger Carlton models including a direct drive hydraulic pump, hardened bushings and shafts, counter balance valves on the lift, swing and hydraulic drive circuits.
The SP4012 series is available with a variety of engine options including: a 27-horsepower Kohler Engine, 35-horsepower Vanguard, or the 33-horsepower Kubota Diesel Engine. With its wide range of features and dependable construction, the SP4012 is designed to maximize production and profits, while minimizing downtime.
Optional Dual Wheels are easily removed. One bolt and you are through the back gate.

Hydraulic Steering allows precise control and operation while minimizing operator fatigue.

A 30-inch tongue cylinder gives the operator a more controlled progression into the stump when precision is a must like when cutting against a chain link fence or sidewalk.

Dual Speed Ground Drive System makes the SP4012 the fastest Self-Propelled machine available!