LS MT573
The LS MT573 is a tractor produced by Ls. It is equipped with a 152.9 ci 2.5 L engine. The listed engine power is Diesel (gross): 73 hp / 54.4 kW. Transmission: 20 forward and reverse. Operating weight: 6620 to 6669 pounds.
Engine Power
Diesel (gross): 73 hp / 54.4 kW
Fuel & Capacities
26.4 gal
99.9 L
Transmission
20 forward and reverse
Operating Weight
6620 to 6669 pounds
Overview
 | 2017 -
MT5 SeriesUtility tractor |
|---|---|
2017 - | |
MT5 Series | |
Utility tractor | |
Production | |
|---|---|
Manufacturer | LS |
Utility tractor | |
Variants | |
|---|---|
MT573C | sync shuttle |
MT573CPS | power shuttle |
LS MT573 Engine | |
|---|---|
LS 2.5L 4-cyl diesel | |
Fuel tank | 26.4 gal
99.9 L |
Engine details ...  | |
LS MT573 Transmission | |
|---|---|
20-speed synchro shuttle | |
Transmission details ...  |
LS MT573 Power | |
|---|---|
Engine (gross) | 73 hp
54.4 kW |
PTO (claimed) | 62 hp
46.2 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Cab standard with air-conditioning. |
Hydraulics | |
|---|---|
Rear valves | 3 |
Front valves | 3 |
Pump flow | 13.2 gpm
50.0 lpm |
Total flow | 19.8 gpm
74.9 lpm |
Steering flow | 6.6 gpm
25.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Control | position and draft control |
Rear lift (at ends) | 6614 lbs
3000 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540/750/1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 84.6 inches
214 cm |
Weight | 6620 to 6669 pounds |
Front tire | 11.2-24 |
Rear tire | 16.9-30 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Battery volts | 12 |
References | |
|---|---|
 | |
MT5 Series published in 2017, by LS | |
MT5 Series published in 2021, by LS |
Engine
Engine Detail — 152.9 ci / 2.5 L Diesel
Manufacturer | LS L4C25-T |
Configuration | turbocharged diesel, 4-cylinder, liquid-cooled |
Displacement | 152.9 ci
2.5 L |
Bore/Stroke | 3.46x4.06 inches
88 x 103 mm |
Emissions | Tier IV |
Power (gross) | 73 hp
54.4 kW |
Rated RPM | 2500 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — 20 forward and reverse synchro shuttle
Type | synchro shuttle |
Gears | 20 forward and reverse |
Dimensions
LS MT573 Tires | |
|---|---|
Standard tires (ag) | Front: 11.2-24. Rear: 16.9-30 |
Dimensions | |
|---|---|
Wheelbase | 84.6 inches
214 cm |
Length | 150 inches
381 cm |
Width | 74.4 inches
188 cm |
Height (cab) | 104.4 inches
265 cm |
Sync shuttle Weight | 6620 lbs
3002 kg |
Power shuttle Weight | 6669 lbs
3025 kg |
Photos
LS MT573
Recommended Implements & Sizing Guide
Engineering recommendations for Ls MT573 based on its 73 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 7 to 8 ft (84-96 in)2.1 - 2.4 m | Heavy Duty | Heavy-duty twin spindle cutter for overgrown acreage. |
Rotary TillerSeedbed Prep | 78 to 84 in200 - 215 cm | Heavy Duty | Heavy commercial tiller with multi-speed gearbox. |
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 | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
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 MT573.
Estimated Continuous Field Runtime: 7 hrs
Approximately 7 hours of continuous field operation at ~75% rated power on a full tank (26.4 gal / 99.9 L).
Estimated 75% Load Fuel Burn~3.8 gal/hr (14.4 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 MT573 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Ls MT573.
Converted Equivalents:
Horsepower (HP)73 hp
Kilowatts (kW)54.4 kW
Metric Horsepower (PS / CV)74 PS
Direct Competitor Comparison
Compare LS MT573 against same-era industry alternatives in the same horsepower class.
Current Model
Ls
LS MT573
Engine Power:Diesel (gross): 73 hp / 54.4 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 634
Engine Power:66
Production Years:1968 - 1972