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Yanmar YM155

Yanmar YM155 tractor
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The Yanmar YM155 is a sub-compact utility tractor produced from 1976 to 1979. It features a 15 hp liquid-cooled 2-cylinder diesel engine, available in 2WD and 4WD variants. The tractor has a 6-speed gear transmission with 2 reverse speeds and mechanical rear differential lock. It offers an open operator station with manual steering and mechanical drum brakes. The YM155 supports various attachments including a 45" mid-mount mower deck, front-end loader, and backhoe. It has a rear Type I hitch with a lift capacity of 1210 lbs and an open center hydraulic system with 3.8 gpm pump flow. Dimensions include a 48.8 inch wheelbase and weights ranging from 1057 to 1145 lbs depending on drive configuration.
Yanmar YM155tractorsub-compact utilitydiesel engine15 hp2WD4WDmower deckloaderbackhoespecifications
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ModelYM155

Technical Specifications

Detailed specifications and technical data for Yanmar YM155

Power

Engine power:15 hp (11.2 kW)

Tires

Ag rear:8-16
2WD Standard tires (ag):Front: 4.50-10, Rear: 8-16
4WD Standard tires (ag):Front: 5-12, Rear: 8-16

Engine

Type:diesel, 2-cylinder, liquid-cooled
Model:Yanmar 2TR13A
Power:15 hp (11.2 kW)
Torque:28.9 lb-ft (39.2 Nm)
Fuel tank:4 gal (15.1 L)
Rated RPM:2700
Torque RPM:2200
Bore/Stroke:2.953x2.953 inches (75 x 75 mm)
Compression:23:1
Displacement:40.4 ci (0.7 L)
Firing order:1-2
Oil capacity:2.1 qts (2.0 L)
Starter volts:12

Variants

YM155:2WD
YM155D:4WD

Dimensions

Width:37.6 inches (95 cm)
Length:99.2 inches (251 cm)
Wheelbase:48.8 inches (123 cm)
2WD Weight:1057 lbs (479 kg)
4WD Weight:1145 lbs (519 kg)
Rear tread:27.6 to 33.5 inches (70 to 85 cm)
Height (hood):42.2 inches (107 cm)
2WD Front tread:28.7 inches (72 cm)
4WD Front tread:29.3 inches (74 cm)
Ground clearance:10.4 inches (26 cm)
Height (steering wheel):45.7 inches (116 cm)

Electrical

Ground:negative
Battery volts:12

Hydraulics

Type:open center
Pump flow:3.8 gpm (14.4 lpm)

Mechanical

Drive:Two- or four-wheel drive
Brakes:Mechanical drum brakes
Steering:Manual
Operator station:Open operator station
Differential lock:mechanical rear

Production

Category:Sub-Compact Utility tractor
Original price:$5,000 in 1979
Years produced:1976 - 1979

Attachments

Backhoe

Model:Yanmar YBH-650 Backhoe
Weight:710 lbs (322 kg)
Swing Arc:180°
Bucket force:2400 lbs (1088 kg)
Bucket widths:9 inches (22 cm), 13 inches (33 cm), 16 inches (40 cm), 19 inches (48 cm)
Digging depth:73 inches (185 cm)
Loading height:60 inches (152 cm)
Reach from pivot:100 inches (254 cm)
Transport height:61 inches (154 cm)

Front-end loader

Model:YFL-155TF Loader
Dump angle:40°
Bucket width:38 inches (96 cm), 48 inches (121 cm)
Lift capacity:450 lbs (204 kg) full at pin
Breakout force:950 lbs (430 kg)
Reach (dumped):22 inches (55 cm)
Height (at pin):70 inches (177 cm)
Clearance (level):70 inches (177 cm)
Clearance (dumped):51 inches (129 cm)
Rollback (ground line):9°
45" mid-mount mower deck: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)

Transmission

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

Tractor hitch

Rear Type:I
Rear lift capacity:1210 lbs (548 kg)

Power Take-off (PTO)

Clutch:overrunning
Engine RPM:540@2540, 770@2540
Rear PTO Type:540 (1.375)