Yanmar
Yanmar YM155
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.
Power-
Founded-
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 | ModelYanmar YBH-650 Backhoe Weight710 lbs (322 kg) Swing Arc180° Bucket force2400 lbs (1088 kg) Bucket widths9 inches (22 cm), 13 inches (33 cm), 16 inches (40 cm), 19 inches (48 cm) Digging depth73 inches (185 cm) Loading height60 inches (152 cm) Reach from pivot100 inches (254 cm) Transport height61 inches (154 cm) |
|---|---|
| Front-end loader | ModelYFL-155TF Loader Dump angle40° Bucket width38 inches (96 cm), 48 inches (121 cm) Lift capacity450 lbs (204 kg) full at pin Breakout force950 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) |