LS XR45
The LS XR45 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): 43 hp / 32.1 kW. Transmission: infinite forward and reverse (3-range). Operating weight: 4251 lbs 1928 kg.
Engine Power
Diesel (listed): 43 hp / 32.1 kW
Fuel & Capacities
12.4 gal
46.9 L
Transmission
infinite forward and reverse (3-range)
Operating Weight
4251 lbs
1928 kg
Overview
 | XR SeriesCompact Utility tractor |
|---|---|
XR Series | |
Compact Utility tractor | |
Production | |
|---|---|
Manufacturer | LS |
Compact Utility tractor | |
LS XR45 Engine | |
|---|---|
LS 2.5L 4-cyl diesel | |
Fuel tank | 12.4 gal
46.9 L |
Engine details ...  | |
LS XR45 Power | |
|---|---|
Engine | 43 hp
32.1 kW |
Gear PTO (claimed) | 35.1 hp
26.2 kW |
Hydro PTO (claimed) | 33.4 hp
24.9 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Steering | hydrostatic power |
Cab standard. | |
Hydraulics | |
|---|---|
Rear valves | 1 or 2 |
Front valves | 2 |
Pump flow | 8.2 gpm
31.0 lpm |
Gear Total flow | 12.4 gpm
46.9 lpm |
Hydro Total flow | 13.7 gpm
51.9 lpm |
Gear Steering flow | 4.2 gpm
15.9 lpm |
Hydro Steering flow | 5.5 gpm
20.8 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | position and draft control |
Rear lift | 2756 lbs
1250 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540/750/1000 |
Mid PTO | independent OptOptional |
Mid PTO Type | 2000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 66.5 inches
168 cm |
Weight | 4251 lbs
1928 kg |
Front tire | 7-14 |
Rear tire | 11.2-24 |
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 | 43 hp
32.1 kW |
Fuel system | indirect injection |
Air cleaner | dry |
Rated RPM | 2600 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
16-speed synchronized shuttle | |
hydrostatic |
Transmission — 16 forward and reverse synchronized shuttle
Type | synchronized shuttle |
Gears | 16 forward and reverse |
 | |
Transmission — infinite forward and reverse (3-range) hydrostatic
Type | hydrostatic |
Gears | infinite forward and reverse (3-range) |
 | |
Dimensions
LS XR45 Tires | |
|---|---|
Ag front | 7-14 |
Ag rear | 11.2-24 |
Dimensions | |
|---|---|
Wheelbase | 66.5 inches
168 cm |
Length | 121.4 inches
308 cm |
Width | 60 inches
152 cm |
Height (cab) | 87.1 inches
221 cm |
Weight | 4251 lbs
1928 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for Ls XR45 based on its 43 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 XR45.
Estimated Continuous Field Runtime: 5.5 hrs
Approximately 5.5 hours of continuous field operation at ~75% rated power on a full tank (12.4 gal / 46.9 L).
Estimated 75% Load Fuel Burn~2.2 gal/hr (8.5 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 XR45 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Ls XR45.
Converted Equivalents:
Horsepower (HP)43 hp
Kilowatts (kW)32.1 kW
Metric Horsepower (PS / CV)43.6 PS
Direct Competitor Comparison
Compare LS XR45 against same-era industry alternatives in the same horsepower class.
Current Model
Ls
LS XR45
Engine Power:Diesel (listed): 43 hp / 32.1 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 364
Engine Power:38.9
Production Years:1976 - 1977
Fox River Tractor CompanyMarket Competitor
Fox River Tractor Company 18-35
Engine Power:38.9
Production Years:1920 - 1920