Yanmar 425
The Yanmar 425 is a tractor produced by Yanmar. It is equipped with a 77.2 ci 1.3 L engine. The listed engine power is Diesel (net): 21.7 hp / 16.2 kW; Diesel (gross): 23.9 hp / 17.8 kW. Transmission: infinite forward and reverse (2-range). Drive type: shaft. Operating weight: 677 lbs 307 kg.
Engine Power
Diesel (net): 21.7 hp / 16.2 kW; Diesel (gross): 23.9 hp / 17.8 kW
Drive & Traction
shaft
Fuel & Capacities
6.1 gal
23.1 L
Transmission
infinite forward and reverse (2-range)
Operating Weight
677 lbs
307 kg
Overview
![]() | 2022 -
SA SeriesCompact Utility tractor |
|---|---|
2022 - | |
SA Series | |
Compact Utility tractor | |
Production | |
|---|---|
Manufacturer | Yanmar |
Compact Utility tractor | |
Yanmar 425 Engine | |
|---|---|
Yanmar 1.3L 3-cyl diesel | |
Fuel tank | 6.1 gal
23.1 L |
Engine details ... | |
Yanmar 425 Transmission | |
|---|---|
hydrostatic | |
Transmission details ... |
Yanmar 425 Power | |
|---|---|
Engine (gross) | 23.9 hp
17.8 kW |
Engine (net) | 21.7 hp
16.2 kW |
PTO (claimed) | 18.1 hp
13.5 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Differential lock | mechanical rear |
Power steering | |
Wet disc brakes | |
Two-post folding ROPS. Four-post ROPS canopy available (425HDX). | |
Hydraulics | |
|---|---|
Type | open center |
Pressure | 2429 psi
167.5 bar |
Pump flow | 4.3 gpm
16.3 lpm |
Steering flow | 3.7 gpm
14.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | I (Limited) |
Control | position control |
Rear lift (at 24"/610mm) | 1209 lbs
548 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Clutch | hydraulic |
Rear PTO Type | 540 (1.375) |
Engine RPM | 554@3200 |
Mid PTO | independent |
Mid PTO Type | 16/32 15T |
Engine RPM | 2057@3200 |
Dimensions & Tires | |
|---|---|
Wheelbase | 63 inches
160 cm |
Weight | 1830 lbs
830 kg |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 40 |
Battery CCA | 540 |
Battery volts | 12 |
References | |
|---|---|
![]() | |
SA223/325/425 published in 2022, by Yanmar | |
425 Multi-Purpose Compact Tractor published in 2022, by Yanmar* | |
*Publication contains known errors. |
Engine
Engine Detail — 77.2 ci / 1.3 L Diesel
Manufacturer | Yanmar 3TNV80F |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled inline |
Displacement | 77.2 ci
1.3 L |
Bore/Stroke | 3.15x3.30 inches
80 x 84 mm |
Power (net) | 21.7 hp
16.2 kW |
Power (gross) | 23.9 hp
17.8 kW |
Rated RPM | 3200 |
Torque | 45.7 lb-ft
62.0 Nm |
Starter | electric |
Starter volts | 12 |
Oil capacity | 3.6 qts
3.4 L |
Coolant capacity | 3.0 qts
2.8 L |
Transmission
Transmission — infinite forward and reverse (2-range) hydrostatic
Type | hydrostatic |
Gears | infinite forward and reverse (2-range) |
Oil capacity | 16.4 qts
15.5 L |
![]() | |
Dimensions
Yanmar 425 Tires | |
|---|---|
Lawn/turf front | 23x8.50-12 |
Lawn/turf rear | 36x14.00-15 |
Industrial front | 23x8.50-12 |
Industrial rear | 14-17.5 |
Dimensions | |
|---|---|
Wheelbase | 63 inches
160 cm |
Length | 105.8 inches
268 cm |
Width | 54.1 inches
137 cm |
Height (steering wheel) | 56.7 inches
144 cm |
Height (ROPS) | 87.2 inches
221 cm |
Height (Folded ROPS) | 71.8 inches
182 cm |
Weight | 1830 lbs
830 kg |
Ground clearance | 9.9 inches
25 cm |
Front tread | 37.8 inches
96 cm |
Rear tread | 40.5 inches
102 cm |
Attachments
Attachment overview | |
|---|---|
60" mid-mount mower deck | |
Front-end loader | |
Backhoe |
60" Mower deck | |
|---|---|
Type | mid-mount Yanmar M60 |
3-blade | |
Cutting width | 60 inches
152 cm |
Drive | shaft |
Weight | 363 lbs
164 kg |
Cut height | 1 to 4 inch
2 to 10 cm |
Yanmar B65 Backhoe | |
|---|---|
Backhoe type | Yanmar B65 Backhoe |
Weight | 677 lbs
307 kg |
2-Foot flat digging depth | 76 inches
193 cm |
Reach from pivot | 102 inches
259 cm |
Loading height | 62.4 inches
158 cm |
Bucket Rotation | 180° |
Swing Arc | 150° |
Bucket force | 2800 lbs
1270 kg |
Dipperstick force | 1590 lbs
721 kg |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Yanmar 425.
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
Yanmar 425 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Yanmar 425.
Converted Equivalents:
Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS
Direct Competitor Comparison
Compare Yanmar 425 against same-era industry alternatives in the same horsepower class.
Current Model
Yanmar
Yanmar 425
Engine Power:Diesel (net): 21.7 hp / 16.2 kW; Diesel (gross): 23.9 hp / 17.8 kW
★ Baseline Reference
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