Leader D 25-40 Tractor

Manufacturer	Leader
Price	2,895(USD)
Model	D 25-40
Equipment Type	Agricultural Crawler Tractors
Factory	Quincy, Illinois, USA

LEADER D 25-40 POWER

Drawbar (claimed)	25 hp/18.6 kW
Belt (claimed)	40 hp/29.8 kW
Plows	5-6 (14-inch)

ENGINE DETAIL

The Leader D 25-40 tractor features a robust 4-cylinder liquid-cooled kerosene engine with a substantial displacement of 13.0 L, providing reliable torque for heavy-duty applications. Its Holley carburetor enhances fuel efficiency, though the hand-crank starter may pose challenges in terms of convenience and ease of use, particularly in cold conditions. This tractor is well-suited for agricultural tasks where durability and engine performance are crucial, but potential users should be aware of the manual starting requirement.

Description	Doman/kerosene/4-cylinder/liquid-cooled
Displacement	792 ci/13.0 L
Bore/Stroke	6.00x7.00 inches/152 x 178 mm
Fuel system	Holley carburetor
Rated RPM	750
Starter type	hand crank

LEADER D 25-40 ENGINE

The Leader D 25-40 tractor is equipped with a Doman 13.0L 4-cylinder kerosene engine, offering high torque and efficient fuel combustion, making it suitable for heavy-duty agricultural tasks. Its powerful engine provides enhanced pulling capacity but may require careful management of fuel types to avoid performance issues in varied operating conditions. Ensure proper maintenance and compatibility with kerosene to maximize operational efficiency and minimize emissions.

Description

Doman 13.0L 4-cyl kerosene

TRANSMISSION

The Leader D 25-40 tractor features a basic [-|-] gear transmission system with 2 forward and 1 reverse gear, offering simplicity in operation but limiting speed and range of power application. This design is advantageous for straightforward tasks in confined spaces, though it may pose challenges for more complex operations requiring variable speed control. Ideal for small-scale farming or maintenance tasks, it may not provide sufficient versatility for larger agricultural enterprises.

Type	gear
Gears	2 forward and 1 reverse

MECHANICAL

The Leader D 25-40 features a half-track chassis, providing enhanced traction and stability on varied terrains, particularly beneficial for agricultural environments or off-road applications. Manual steering can increase operator control, but may result in operator fatigue over extended use compared to hydraulic systems. Its 2-speed gear transmission offers versatility in speed selection, enabling efficient operations in different work scenarios, though it may not provide the smoothness of more advanced transmission systems.

Chassis	half-track
Steering	manual
Cab	Open operator station with four-post canopy.
Transmission	2-speed gear

LEADER D 25-40 TIRES

The Leader D 25-40 tractor features AG rear tracks, enhancing traction and stability on varied terrains, which is beneficial for agricultural applications requiring maneuverability in soft soil conditions. However, the use of tracks may increase maintenance complexity and initial acquisition costs compared to wheeled options. For optimal performance, ensure proper tension and alignment of tracks to avoid wear and maximize efficiency during field operations.

Ag rear

tracks

DIMENSIONS

Length	153 inches/388 cm
Width	64 inches/162 cm
Height	96 inches/243 cm
Weight	6500 lbs/2948 kg

DIMENSIONS & TIRES

The Leader D 25-40 tractor, weighing 6,500 lbs (2,948 kg) and equipped with rear tracks, offers superior traction and stability on uneven terrain, making it ideal for agricultural applications in muddy or hilly conditions. However, the track system may increase maintenance complexity and cost compared to traditional tires. In scenarios involving heavy loads or prolonged fieldwork, the weight distribution enhances performance but may reduce mobility on paved surfaces.

Weight	6500 lbs/2948 kg
Rear tire	tracks

BELT PULLEY

Diameter	14 inches/35 cm
Width	8 inches/20 cm
RPM	750
Speed	2750 ft/min/838.20 meters/min

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