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Yanmar YM155

The Yanmar YM155 is a tractor produced by Yanmar. It is equipped with a 40.4 ci 0.7 L engine. The listed engine power is Diesel (listed): 15 hp / 11.2 kW. Transmission: 6 forward and 2 reverse. Operating weight: 710 lbs 322 kg.

Engine Power
Diesel (listed): 15 hp / 11.2 kW
Fuel & Capacities
4 gal 15.1 L
Transmission
6 forward and 2 reverse
Operating Weight
710 lbs 322 kg

Overview

Yanmar YM155 tractor photo
1976 - 1979 Sub-Compact Utility tractor
Production
Manufacturer
Yanmar
Sub-Compact Utility tractor
Original price was $5,000 in 1979
Variants
YM155
2WD
YM155D
4WD
Yanmar YM155 Engine
Yanmar 0.7L 2-cyl diesel
Fuel tank
4 gal 15.1 L
Engine details ...
Yanmar YM155 Transmission
6-speed gear
Transmission details ...
Yanmar YM155 Power
Engine
15 hp 11.2 kW
Mechanical
Two- or four-wheel drive
Differential lock
mechanical rear
Manual steering
Mechanical drum brakes
Open operator station.
Hydraulics
Type
open center
Pump flow
3.8 gpm 14.4 lpm
Tractor hitch
Rear Type
I
Rear lift
1210 lbs 548 kg
Power Take-off (PTO)
Clutch
overrunning
Rear PTO Type
540 (1.375)
Engine RPM
540@2540
770@2540
Dimensions & Tires
Wheelbase
48.8 inches 123 cm
Weight
1057 to 1145 pounds
Front tire
4.50-10
2WD Rear tire
8-16
Full dimensions and tires ...
Electrical
Ground
negative
Battery volts
12
References
YM155 references literature
YFL-155TD Loaders published by Yanmar
Service Manual Model YM135(D), YM155(D) (AOD1048) published in 1976
YM155/YM155D published in 1976, by Yanmar

Engine

Engine Detail — 40.4 ci / 0.7 L Diesel

Manufacturer
Yanmar 2TR13A
Fuel Type
Diesel
Configuration
2-cylinder, liquid-cooled
Displacement
40.4 ci 0.7 L
Bore/Stroke
2.953x2.953 inches 75 x 75 mm
Power
15 hp 11.2 kW
Compression
23:1
Rated RPM
2700
Torque
28.9 lb-ft 39.2 Nm
Torque RPM
2200
Firing order
1-2
Starter volts
12
Oil capacity
2.1 qts 2.0 L

Transmission

Transmission — 6 forward and 2 reverse gear

Type
gear
Gears
6 forward and 2 reverse
Clutch
180mm dry disc
YM155 gear speeds

Dimensions

Yanmar YM155 Tires
2WD Standard tires (ag)
Front: 4.50-10. Rear: 8-16
4WD Standard tires (ag)
Front: 5-12. Rear: 8-16
Ag rear
8-16
Dimensions
Wheelbase
48.8 inches 123 cm
Length
99.2 inches 251 cm
Width
37.6 inches 95 cm
Height (steering wheel)
45.7 inches 116 cm
Height (hood)
42.2 inches 107 cm
2WD Weight
1057 lbs 479 kg
4WD Weight
1145 lbs 519 kg
Ground clearance
10.4 inches 26 cm
2WD Front tread
28.7 inches 72 cm
4WD Front tread
29.3 inches 74 cm
Rear tread
27.6 to 33.5 inches 70 to 85 cm

Attachments

Attachment overview
45" mid-mount mower deck
Front-end loader
Backhoe
45" Mower deck
Type
mid-mount Yanmar YMM-45
2-blade with hydraulic lift
Cutting width
45 inches 114 cm
Overall width
54 inches 137 cm
Cut height
1.1 to 5 inch 2 to 12 cm
Yanmar YBH-650 Backhoe
Backhoe type
Yanmar YBH-650 Backhoe
Weight
710 lbs 322 kg
Transport height
61 inches 154 cm
Bucket width
9 inches 22 cm
13 inches 33 cm
16 inches 40 cm
19 inches 48 cm
Digging depth
73 inches 185 cm
Reach from pivot
100 inches 254 cm
Loading height
60 inches 152 cm
Swing Arc
180°
Bucket force
2400 lbs 1088 kg

Photos

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D.

Yanmar YM155D operator station and controls.

Yanmar YM155D operator station and controls.

Recommended Implements & Sizing Guide

Engineering recommendations for Yanmar YM155 based on its 15 HP power envelope and ASAE agricultural standards.

Implement & OperationRecommended SizeWorkload RatingEngineering Notes
Moldboard PlowPrimary Tillage
1 to 2 Bottom (12")1 - 2 铧 (30 cm)Light DutyIdeal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing
4 ft (48 in)1.2 mLight DutyPasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep
42 to 48 in105 - 120 cmLight DutyCovers compact tractor tire width.
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 Yanmar YM155.

Estimated Continuous Field Runtime: 5.1 hrs

Approximately 5.1 hours of continuous field operation at ~75% rated power on a full tank (4 gal / 15.1 L).

Estimated 75% Load Fuel Burn~0.8 gal/hr (3 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

Yanmar YM155 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Yanmar YM155.

Converted Equivalents:

Horsepower (HP)15 hp
Kilowatts (kW)11.2 kW
Metric Horsepower (PS / CV)15.2 PS

Direct Competitor Comparison

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Yanmar YM155

Engine Power:Diesel (listed): 15 hp / 11.2 kW
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