Shibaura SD3903
The Shibaura SD3903 is a tractor produced by Shibaura. It is equipped with a 90.6 ci 1.5 L engine. The listed engine power is Diesel (listed): 39 hp / 29.1 kW. Transmission: 24 forward and 8 reverse. Operating weight: 3643 lbs 1652 kg.
Engine Power
Diesel (listed): 39 hp / 29.1 kW
Transmission
24 forward and 8 reverse
Operating Weight
3643 lbs
1652 kg
Overview
 | 1980 - 1985
SD 3 SeriesCompact Utility tractor
SD 3 Series
Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Shibaura |
Compact Utility tractor | |
Built in Matsumoto, Japan | |
Shibaura SD3903 Engine | |
|---|---|
Shibaura 1.5L 4-cyl diesel | |
Engine details ...  |
Shibaura SD3903 Power | |
|---|---|
Engine | 39 hp
29.1 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Open operator station. |
Tractor hitch | |
|---|---|
Rear Type | I |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
|---|---|
Weight | 3643 lbs
1652 kg |
Front tire | 6.00-16 |
Rear tire | 12.4/11-28 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 90.6 ci / 1.5 L Diesel
Manufacturer | Shibaura LEM754AT |
Configuration | turbocharged diesel, 4-cylinder, liquid-cooled inline |
Displacement | 90.6 ci
1.5 L |
Power | 39 hp
29.1 kW |
Rated RPM | 2750 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
12-speed gear | |
24-speed creeper |
Transmission — 12 forward and 4 reverse gear
Type | gear |
Gears | 12 forward and 4 reverse |
Transmission | |
Type | creeper |
Gears | 24 forward and 8 reverse |
Dimensions
Shibaura SD3903 Tires | |
|---|---|
Standard tires (ag) | Front: 6.00-16. Rear: 12.4/11-28 |
Dimensions | |
|---|---|
Length | 132 inches
335 cm |
Width | 60 inches
152 cm |
Height | 76 inches
193 cm |
Weight | 3643 lbs
1652 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for Shibaura SD3903 based on its 39 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 | 5 ft (60 in)1.5 m | Medium Duty | Pasture maintenance and weeds up to 1.5" diameter. |
Rotary TillerSeedbed Prep | 54 to 60 in135 - 150 cm | Medium Duty | Thorough seedbed preparation in orchards and vegetable plots. |
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. |
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 Shibaura SD3903.
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
Shibaura SD3903 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Shibaura SD3903.
Converted Equivalents:
Horsepower (HP)39 hp
Kilowatts (kW)29.1 kW
Metric Horsepower (PS / CV)39.5 PS
Direct Competitor Comparison
Compare Shibaura SD3903 against same-era industry alternatives in the same horsepower class.
Current Model
Shibaura
Shibaura SD3903
Engine Power:Diesel (listed): 39 hp / 29.1 kW
★ Baseline Reference
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