Lanz Bulldog D3506
The Lanz Bulldog D3506 is a classic 2-wheel drive tractor known for its simple design and reliable performance. It features a 6-speed gear transmission, giving farmers good control over their work speed. The tractor is powered by a Lanz-made diesel engine that uses liquid cooling to keep it running smoothly. What makes this tractor special is its single-cylinder engine. With a displacement of 286.8 cubic inches, it's quite large for a one-cylinder motor. The engine runs at a slow 760 RPM but still produces 19.6 horsepower. This low-speed, high-torque design was typical of Lanz Bulldog tractors and helped them pull heavy loads. The D3506 also comes with a Category 3 hitch, allowing it to work with a wide range of farm implements.
Quick specs
- Category
- Standard Tread
- Engine Power Output
- 20hp
- Transmission
- Gear
At a glance
How the Bulldog D3506 compares
vs. Standard Tread medianDistribution
Engine Power (hp)
Across all Standard Tread tractors
This model
The Bulldog D3506 ranks at the 5th percentile for engine power among recorded standard tread tractors.
Overview
About the Lanz Bulldog D3506
The Lanz Bulldog D3506 is a classic 2-wheel drive tractor known for its simple design and reliable performance. It features a 6-speed gear transmission, giving farmers good control over their work speed. The tractor is powered by a Lanz-made diesel engine that uses liquid cooling to keep it running smoothly. What makes this tractor special is its single-cylinder engine. With a displacement of 286.8 cubic inches, it's quite large for a one-cylinder motor. The engine runs at a slow 760 RPM but still produces 19.6 horsepower. This low-speed, high-torque design was typical of Lanz Bulldog tractors and helped them pull heavy loads. The D3506 also comes with a Category 3 hitch, allowing it to work with a wide range of farm implements.
Full specifications
Every recorded spec
General
| Manufacturer | Lanz |
|---|---|
| Model | Bulldog D3506 |
| Category | Standard Tread tractor |
| Type | 2WD |
Engine
| Make | Lanz |
|---|---|
| Power | 19.6hp |
| Cylinders | 1 |
| Displacement | 286.8ci |
| Bore | 6.69in |
| Stroke | 8.27in |
Transmission
| Type | Gear |
|---|---|
| Forward gears | 6 |
Chassis & drive
| Chassis | 2WD |
|---|---|
| Drive | 2WD |
Head to head
Bulldog D3506 vs. Standard Tread median
How the Lanz Bulldog D3506 compares to other Standard Tread tractors
| Spec | This model | Standard Tread median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 19.6 hp | 45 hp | -56% | 5th |
| Engine Displacement | 287 ci | 382 ci | -25% | 33rd |
| Cylinders | 1 | 4 | -75% | 7th |
| Forward Gears | 6 | 4 | +50% | 79th |
Medians and percentiles are computed from the standard tread tractors in our database with a recorded value for each spec (sample sizes 121–367 models).
Compare to tractors with similar specs
Commonly compared Lanz tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Lanz Bulldog D3507 | 19.6 hp | — | — | Compare → |
| Lanz Bulldog D2016 | 20 hp | 3,300 lb | — | Compare → |
| Lanz Bulldog D2416 | 24 hp | — | — | Compare → |
| Lanz Bulldog D7500 | 24.5 hp | 4,850 lb | — | Compare → |
| Lanz Bulldog D7506 | 24.5 hp | 4,982 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers 620 | 19.5 hp | 1,499 lb | 1973–1975 | Compare → |
| Allis Chalmers 720 | 19.5 hp | 1,299 lb | 1975–1983 | Compare → |
| Bolens HT20 | 19.5 hp | 1,091 lb | 1973–1978 | Compare → |
| Ag King AK2040 | 20 hp | 2,470 lb | — | Compare → |
| Ariens GT20 | 20 hp | 959 lb | 1988–1995 | Compare → |
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FAQ
Common questions
How much horsepower does the Lanz Bulldog D3506 have?
The Lanz Bulldog D3506 produces 19.6 hp from its 1-cylinder engine. Engine displacement is 286.8 ci.
What transmission is in the Lanz Bulldog D3506?
Transmission on the Lanz Bulldog D3506 is Gear, with 6 forward speeds.
What three-point hitch category does the Lanz Bulldog D3506 use?
The Lanz Bulldog D3506 has a Category Category 3 three-point hitch.
What maintenance does the Lanz Bulldog D3506 require?
Like any tractor, the Lanz Bulldog D3506 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.



