Skip to content
TractorStack.Shibaura ST321 — Sasha Krotov, CC BY 3.0. Resized; converted to WebP. · Sasha Krotov · CC BY 3.0 commons.wikimedia.org source ↗ Shibaura ST321 — Sasha Krotov, CC BY 3.0. Resized; converted to WebP. · Sasha Krotov · CC BY 3.0 commons.wikimedia.org source ↗
An independent tractor referenceSpecifications. Sources. Side by side.
Search
Find your tractor.
Menu ☰
Years in Production / Production years not listed
Shibaura
ST321
Explore the specifications, hardware, and original references for the Shibaura ST321.
21hp
Source index power
MFWD Optional
Drive
Production years not listed
Production years
Shibaura
Manufacturer
ST321 / 01
At a glance
Production
Compact Utility tractor
Built in Matsumoto, Japan
- Manufacturer
- Shibaura
Mechanical
Four-wheel drive
Power steering
Wet disc brakes
Two-post folding ROPS.
- Differential Lock
- mechanical rear
Capacity
- Fuel
- 5.3 gal20.1 L
- Hydraulic System
- 4.2 gal15.9 L
Hydraulics
- Type
- open center
- Capacity
- 4.2 gal15.9 L
- Pressure
- 1849 psi127.5 bar
- Pump Flow
- 4.9 gpm18.5 lpm
Hitch
- Rear Type
- I
- Rear Lift
- 1474 lbs668 kg
Pto
- Gear Rear Pto
- transmission
- Hydro Rear Pto
- live
- Rear Type
- 540 (1.375)
- Gear Engine Rpm
- 588@2600
- Gear Engine Rpm
- 2139@2600
- Hydro Engine Rpm
- 561@2600
- Hydro Engine Rpm
- 2040@2600
- Mid Pto
- optional
- Mid Pto Type
- 2000
Electrical
- Ground
- negative
- Charging System
- alternator
- Charging Amps
- 40
- Charging Volts
- 14
- Battery Volts
- 12
ST321 / 02
Under the hood
Engine Detail
Shiabaura S773
diesel
3-cylinder
liquid-cooled
- Displacement
- 61.3 ci1.0 L
- Bore Stroke
- 3.03x2.83 inches77 x 72 mm
- Power
- 21 hp15.7 kW
- Compression Ratio
- 23:1
- Rated Rpm
- 2600
- Starter
- electric
- Starter Volts
- 12
- Oil Capacity
- 3.5 qts3.3 L
- Coolant Capacity
- 3.7 qts3.5 L
- Fuel Type
- diesel
- Cylinders
- 3
- Cooling
- liquid-cooled
ST321 / 03
Gears & controls
Transmission (Option 1)
- Transmission Type
- gear
- Gears
- 9 forward and 3 reverse
- Clutch
- dry disc
Transmission (Option 2)
- Transmission Type
- hydrostatic
- Gears
- infinite forward and reverse2-range
ST321 / 04
Size. Stance. Footprint.
Dimensions
- Length
- 107.4 in272 cm
- Width
- 46.8 in118 cm
- Height (ROPS)
- 88.2 in224 cm
- Wheelbase
- 55.3 in140 cm
- Front tread
- 33.3 in84 cm
- Rear tread
- 35.3 in89 cm
Dimensions And Tires
- Wheelbase
- 55.3 inches140 cm
- Weight
- 1649 to 1662 pounds
- Front Tire
- 6-12
- Rear Tire
- 9.5-16
Tires And Tracks
- Front Ag
- 6-12
- Rear Ag
- 9.5-16
- Lawn Turf Front
- 20x8.00-10
- Lawn Turf Rear
- 29x12.00-15
ST321 / 05