LS U50
The LS U50 is a tractor produced by Ls. It is equipped with a 152.9 ci 2.5 L engine. The listed engine power is Diesel (listed): 47 hp / 35.0 kW. Transmission: 32 forward and 16 reverse. Operating weight: 4303 to 4839 pounds.
Engine Power
Diesel (listed): 47 hp / 35.0 kW
Fuel & Capacities
21.1 gal
79.9 L
Transmission
32 forward and 16 reverse
Operating Weight
4303 to 4839 pounds
Overview
 | U SeriesUtility tractor |
|---|---|
U Series | |
Utility tractor | |
Production | |
|---|---|
Manufacturer | LS |
Utility tractor | |
LS U50 Engine | |
|---|---|
LS 2.5L 4-cyl diesel | |
Fuel tank | 21.1 gal
79.9 L |
Engine details ...  | |
LS U50 Power | |
|---|---|
Engine | 47 hp
35.0 kW |
PTO (claimed) | 41.3 hp
30.8 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Steering | hydrostatic power |
ROPS. Cab optional. | |
Hydraulics | |
|---|---|
Rear valves | 2 |
Front valves | 2 |
Pump flow | 9.1 gpm
34.4 lpm |
Total flow | 13.8 gpm
52.2 lpm |
Steering flow | 4.7 gpm
17.8 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | position and draft control |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540/750/1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 76 inches
193 cm |
Weight | 4303 to 4839 pounds |
Front tire | 9.5-20 |
Rear tire | 13.6-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 152.9 ci / 2.5 L Diesel
Manufacturer | LS S4QL |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 152.9 ci
2.5 L |
Bore/Stroke | 3.46x4.06 inches
88 x 103 mm |
Emissions | Tier 3 |
Power | 47 hp
35.0 kW |
Fuel system | indirect injection |
Air cleaner | dry |
Rated RPM | 2600 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
16-speed synchronized shuttle | |
32-speed synchronized shuttle creeper |
Transmission — 16 forward and reverse synchronized shuttle
Type | synchronized shuttle |
Gears | 16 forward and reverse |
 | |
Transmission | |
Type | synchronized shuttle creeper |
Gears | 32 forward and 16 reverse |
 | |
Dimensions
LS U50 Tires | |
|---|---|
Ag front | 9.5-20 |
Ag rear | 13.6-28 |
Dimensions | |
|---|---|
Wheelbase | 76 inches
193 cm |
Length | 135.2 inches
343 cm |
Width | 65.7 inches
166 cm |
Height (ROPS) | 102.3 inches
259 cm |
Height (cab) | 94.6 inches
240 cm |
ROPS Weight | 4303 lbs
1951 kg |
Cab Weight | 4839 lbs
2194 kg |
Photos
LS U50 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Ls U50 based on its 47 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
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 Ls U50.
Estimated Continuous Field Runtime: 8.6 hrs
Approximately 8.6 hours of continuous field operation at ~75% rated power on a full tank (21.1 gal / 79.9 L).
Estimated 75% Load Fuel Burn~2.4 gal/hr (9.3 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
Ls U50 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Ls U50.
Converted Equivalents:
Horsepower (HP)47 hp
Kilowatts (kW)35 kW
Metric Horsepower (PS / CV)47.7 PS
Direct Competitor Comparison
Compare LS U50 against same-era industry alternatives in the same horsepower class.
Current Model
Ls
LS U50
Engine Power:Diesel (listed): 47 hp / 35.0 kW
★ Baseline Reference