Bad Boy 4025
The Bad Boy 4025 is a tractor produced by Bad Boy. It is equipped with a 104.7 ci 1.7 L engine. The listed engine power is Diesel (gross): 24.5 hp / 18.3 kW. Transmission: infinite forward and reverse (3-range). Operating weight: 1340 lbs 607 kg.
Engine Power
Diesel (gross): 24.5 hp / 18.3 kW
Fuel & Capacities
7.1 gal
26.9 L
Transmission
infinite forward and reverse (3-range)
Operating Weight
1340 lbs
607 kg
Overview
 | 2021 -
40 SeriesCompact Utility tractorTYM built |
|---|---|
2021 - | |
40 Series | |
Compact Utility tractor | |
TYM built | |
2021 - | |
|---|---|
40 Series | |
Compact Utility tractor | |
TYM built |
Production | |
|---|---|
Distributor | Bad Boy |
Manufacturer | TYM |
Compact Utility tractor | |
Bad Boy 4025 Engine | |
|---|---|
TYM 1.7L 3-cyl diesel | |
Fuel tank | 7.1 gal
26.9 L |
Engine details ...  | |
Bad Boy 4025 Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Bad Boy 4025 Power | |
|---|---|
Engine (gross) | 24.5 hp
18.3 kW |
PTO (claimed) | 19.1 hp
14.2 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Differential lock | mechanical rear |
Power steering | |
Wet disc brakes | |
Two-post folding ROPS. | |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 11.5 gpm
43.5 lpm |
Total flow | 7.5 gpm
28.4 lpm |
Steering flow | 4 gpm
15.1 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Rear lift (at 24"/610mm) | 1100 lbs
498 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 65.7 inches
166 cm |
Weight | 2970 lbs
1347 kg |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 50 |
Battery CCA | 540 |
Battery volts | 12 |
References | |
|---|---|
 | |
Tractor Series published in 2021, by Bad Boy | |
Tractor Series published in 2023, by Bad Boy | |
Mow with an Attitude published in 2024, by Bad Boy | |
 | |
Operator's Manual Model BBH400 Backhoe published in 2022 | |
Operator's Manual Model BBL400 Front End Loader published in 2022 | |
Operator's Manual Model 4025H/4035H published in 2021 |
Engine
| 2021 -
40 SeriesCompact Utility tractorTYM built |
|---|---|
2021 - | |
40 Series | |
Compact Utility tractor | |
TYM built | |
2021 - | |
|---|---|
40 Series | |
Compact Utility tractor | |
TYM built |
Engine Detail — 104.7 ci / 1.7 L Diesel
Manufacturer | TYM A1700N6 |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled inline |
Displacement | 104.7 ci
1.7 L |
Bore/Stroke | 3.46x3.70 inches
88 x 94 mm |
Power (gross) | 24.5 hp
18.3 kW |
Air cleaner | dry |
Rated RPM | 2100 |
Starter | electric |
Starter volts | 12 |
Oil capacity | 4.5 qts
4.3 L |
Coolant capacity | 5.3 qts
5.0 L |
Bad Boy 4025 Engine | |
|---|---|
 |
Transmission
| 2021 -
40 SeriesCompact Utility tractorTYM built |
|---|---|
2021 - | |
40 Series | |
Compact Utility tractor | |
TYM built | |
2021 - | |
|---|---|
40 Series | |
Compact Utility tractor | |
TYM built |
Transmission — infinite forward and reverse (3-range) hydrostatic
Type | hydrostatic |
Gears | infinite forward and reverse (3-range) |
Dimensions
| 2021 -
40 SeriesCompact Utility tractorTYM built |
|---|---|
2021 - | |
40 Series | |
Compact Utility tractor | |
TYM built | |
2021 - | |
|---|---|
40 Series | |
Compact Utility tractor | |
TYM built |
Bad Boy 4025 Tires | |
|---|---|
Industrial front | 25x8.50-14 |
Industrial rear | 15-19.5 |
Dimensions | |
|---|---|
Wheelbase | 65.7 inches
166 cm |
Length | 134.9 inches
342 cm |
Width | 56.7 inches
144 cm |
Height (ROPS) | 96.9 inches
246 cm |
Weight | 2970 lbs
1347 kg |
Ground clearance | 15 inches
38 cm |
Front tread | 47.4 inches
120 cm |
Rear tread | 44.5 inches
113 cm |
Attachments
| 2021 -
40 SeriesCompact Utility tractorTYM built |
|---|---|
2021 - | |
40 Series | |
Compact Utility tractor | |
TYM built | |
2021 - | |
|---|---|
40 Series | |
Compact Utility tractor | |
TYM built |
Attachment overview | |
|---|---|
Front-end loader | |
Backhoe |
Bad Boy BBH400 Backhoe | |
|---|---|
Backhoe type | Bad Boy BBH400 Backhoe |
Weight | 1340 lbs
607 kg |
Transport height | 76.2 inches
193 cm |
Bucket width | 16 inches
40 cm |
2-Foot flat digging depth | 86.6 inches
219 cm |
Reach from pivot | 118.1 inches
299 cm |
Loading height | 57.5 inches
146 cm |
Bucket Rotation | 180° |
Swing Arc | 180° |
Bucket force | 2380 lbs
1079 kg |
Photos
Bad Boy 4025 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Bad Boy 4025 based on its 24.5 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Bad Boy 4025.
Estimated Continuous Field Runtime: 5.6 hrs
Approximately 5.6 hours of continuous field operation at ~75% rated power on a full tank (7.1 gal / 26.9 L).
Estimated 75% Load Fuel Burn~1.3 gal/hr (4.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Bad Boy 4025 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Bad Boy 4025.
Converted Equivalents:
Horsepower (HP)24.5 hp
Kilowatts (kW)18.3 kW
Metric Horsepower (PS / CV)24.8 PS
Direct Competitor Comparison
Compare Bad Boy 4025 against same-era industry alternatives in the same horsepower class.
Current Model
Bad Boy
Bad Boy 4025
Engine Power:Diesel (gross): 24.5 hp / 18.3 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 10-20
Engine Power:22.2
Production Years:1915 - 1920
Related models
Bad Boy 1022
- Power:
- 21.5
- Production years:
- 2021 - 2026
Bad Boy 2024
- Power:
- 24
- Production years:
- 2021 - 2023
Bad Boy 3026
- Power:
- 24
- Production years:
- 2021 - 2026
Bad Boy 1025
- Power:
- 24.6
- Production years:
- 2022 - 2026
Bad Boy 5045
- Power:
- 45
- Production years:
- 2024 - 2026