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John Deere 770

John Deere 770 tractor
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The John Deere 770 is a compact utility tractor built by Yanmar in Japan from 1989 to 1998. It is part of the 70 Compact Series and features a Yanmar 1.4L 3-cylinder diesel engine producing 23 hp (17.2 kW) net power. The tractor has an 8-speed unsynchronized gear transmission with 2 reverse gears and a 215mm dry disc clutch. It offers two- or four-wheel drive options with mechanical rear differential lock and manual or optional power steering. The hydraulic system is open center with 4 gal (15.1 L) capacity and optional rear and mid valves. The tractor has a rear PTO with 540 rpm and optional live PTO, and a mid PTO with 2100 rpm. Dimensions include a 61 inch (154 cm) wheelbase, 111 inch (281 cm) length, and weights ranging from 1930 to 2105 lbs depending on drive configuration. Attachments include a 60" mid-mount mower deck, front blade, front-end loader, and backhoe. The 770 was originally priced at $13,000 in 1998.
John Deere 770compact utility tractorYanmar engine23 hp tractor8-speed transmissiontractor attachmentstractor dimensions
Power23 hp
Founded1989 - 1998
Model770

Technical Specifications

Detailed specifications and technical data for John Deere 770

Power

Engine (net):23 hp (17.2 kW)
PTO (claimed):20 hp (14.9 kW)

Tires

Lawn/turf rear:13.6-16
Lawn/turf front:25x8.50-14
2WD Optional tires (ag):Front: 5.00-12. Rear: 12.4-16
2WD Standard tires (ag):Front: 4.00-15. Rear: 9.5-24
4WD Standard tires (ag):Front: 6.00-12. Rear: 12.4-16
2WD Optional tires (ag) 2:Front: 6.50-10. Rear: 12.4-16

Engine

Model:Yanmar 1.4L 3-cyl diesel

Height

2WD Hood:58.5 inches (148 cm)
2WD ROPS:80.8 inches (205 cm)
4WD Hood:48.6 inches (123 cm)
4WD ROPS:79 inches (200 cm)
2WD Exhaust:74.1 inches (188 cm)
4WD Exhaust:75.6 inches (192 cm)

Capacity

Fuel:6.3 gal (23.8 L)
Front axle:3.2 qts (3.0 L)
Hydraulic system:4 gal (15.1 L)

Dimensions

Length:111 inches (281 cm)
2WD Width:49.3 inches (125 cm) Minimum width
4WD Width:52.5 inches (133 cm) Minimum width
Wheelbase:61 inches (154 cm)
2WD Weight:1930 lbs (875 kg)
4WD Weight:2105 lbs (954 kg)
Rear tread:40 inches (101 cm)
2WD Front tread:38.1 inches (96 cm)
4WD Front tread:37.2 inches (94 cm)
2WD Clearance (drawbar):13.8 inches (35 cm)
4WD Clearance (drawbar):12 inches (30 cm)

Electrical

Ground:negative
Battery CCA:447
Battery volts:12
Charging amps:20
Charging system:alternator

Hydraulics

Type:open center
Capacity:4 gal (15.1 L)
Pressure:2050 psi (141.3 bar)
Pump flow:5.6 gpm (21.2 lpm)
Mid valves:2 (Optional)
Total flow:5.6 gpm (manual steering) (21.2 lpm), 9.9 gpm (power steering) (37.5 lpm)
Rear valves:2 (Optional)
Steering flow:4.3 gpm (16.3 lpm)

Mechanical

ROPS:Two-post ROPS
Drive:Two- or four-wheel drive
Brakes:Dry shoe brakes
Steering:manual, power (Optional)
Final drives:spur gear
Differential lock:mechanical rear

Production

Type:Compact Utility tractor
Built in:Japan
Distributor:John Deere
Manufacturer:Yanmar
Original price:$13,000 in 1998
Production years:1989 - 1998

Attachments

Overview:60" mid-mount mower deck, Blade, Front-end loader, Backhoe

54" Blade

Cut:5.25 inches (13 cm)
Lift:12.25 inches (31 cm)
Model:John Deere 380A
Mount:front-mount
Width:54 inches (137 cm)
Height:18 inches (45 cm)
Weight:460 lbs (208 kg)
Features:hydraulic-lift, hydraulic-angle

70 Loader

Dump angle:45°
Bucket widths:48 inches (121 cm), 54 inches (137 cm), 60 inches (152 cm)
Breakout force:1300 lbs (589 kg)
Reach (dumped):31 inches (78 cm)
Reach (ground):46 inches (116 cm)
Rollback angle:22°
Bucket breakout:1570 lbs (712 kg)
Height (at pin):77 inches (195 cm)
Clearance (level):74 inches (187 cm)
Clearance (dumped):62.5 inches (158 cm)
Lift capacity (full at pin):700 lbs (317 kg)

60" Mower deck

Type:mid-mount John Deere 160
Blades:3-blade
Weight:345 lbs (156 kg)
Cut height:1.0 to 8.75 inch (2 to 22 cm)
Cutting width:60 inches (152 cm)
Overall width:72.5 inches (184 cm)

John Deere 7 Backhoe

Type:John Deere 7 Backhoe
Weight:787 lbs (356 kg)
Swing Arc:180°
Bucket force:1095 lbs (496 kg)
Bucket width:9 inches (22 cm)
Loading height:70 inches (177 cm)
Bucket Rotation:180°
Reach from pivot:114 inches (289 cm)
Transport height:69 inches (175 cm)
Dipperstick force:1945 lbs (882 kg)
Additional bucket widths:13 inches (33 cm), 16 inches (40 cm), 19 inches (48 cm)
2-Foot flat digging depth:90 inches (228 cm)

Transmission

Type:unsynchronized gear
Gears:8 forward and 2 reverse
Clutch:215mm dry disc
Description:Four gears, plus reverse, in two ranges.
Oil capacity:16 qts (15.1 L)

Tractor hitch

Control:position control
Rear Type:I
Rear lift (at 24"/610mm):815 lbs (369 kg)

Serial Numbers

1989:1001
1990:4111
1991:100001
1992:115001
1993:120001
1994:130001
1995:140001
1996:150001
1997:160001
1998:170001

Power Take-off (PTO)

Mid PTO:live (Optional)
Rear PTO:transmission
Mid PTO Type:2100
Rear PTO Type:540
Rear PTO live:Optional
Mid PTO Engine RPM:2100@2600
Rear PTO Engine RPM:540@2600