EngineYanmar 1.4L 3-cyl diesel
Transmission8-speed unsynchronized gear
Series70 Compact Series

The John Deere 770 tractor is powered by a Yanmar 1.4L 3-cyl diesel engine. It has a 8-speed unsynchronized gear transmission.

Engine

The engine is a Yanmar 3TN82-RJX diesel 3-cylinder liquid-cooled with a displacement of 83.1ci / 1.4L and a bore/stroke of 3.22x3.39inches / 82x 86mm. It uses direct injection fuel system and a dry element air cleaner. The engine has an air intake heater for pre-heating and a compression ratio of 18.1:1. It has a rated RPM of 2600 and an idle RPM of 800-2800. The starter voltage is 12 and the oil capacity is 4.2qts / 4.0L while the coolant capacity is 5.1qts / 4.8L.

Transmission

The transmission is an 8-speed unsynchronized gear. Unfortunately, no further details were provided in the .

Brakes

The brakes are dry shoe brakes. The tractor has two- or four-wheel drive and a two-post ROPS. The final drive is a spur gear and the differential location is mechanical rear. The steering is power and optional.

Steering

The steering is a Yanmar 1.4L 3-cylinder diesel. Unfortunately, no further details were provided in the .

Common Problems

Users have reported issues with the tractor's dry shoe brakes, which can wear out quickly and require frequent replacement. Some users have also reported issues with the tractor's power steering, which can fail or become difficult to operate over time. Additionally, some users have reported issues with the tractor's transmission, including difficulty shifting gears and a tendency to slip out of gear.

What Users Like

Users appreciate the John Deere 770's versatility and reliability, as well as its ease of use and maintenance. Many users also appreciate the tractor's compact size, which makes it easy to maneuver in tight spaces. The tractor's standard and optional tire sizes are also popular among users, as they provide good traction and stability on a variety of terrains.

John Deere 770 Technical Specifications

Engine Detail

DescriptionYanmar 3TN82-RJX diesel 3-cylinder liquid-cooled
Displacemen83.1ci / 1.4L
Bore/strok3.22x3.39inches / 82x 86mm
Fuel Systedirect injection
Air Cleanedry element
Pre-heatinair intake heater
Compressio18.1:1
Rated Rp2600
Idle Rp800-2800
Starter Volt12
Oil Capacit4.2qts / 4.0L
Coolant Capacit5.1qts / 4.8L

Engine

DescriptionYanmar 1.4L 3-cyl diesel

Transmission

Description8-speed unsynchronized gear

Mechanical

DescriptionTwo- or four-wheel drive Dry shoe brakes Two-post ROPS
Final Drivespur gear
Differential Locmechanical rear
Steerinpower OptOptional

Tires

2wd Standard Tires (agFront: 4.00-15. Rear: 9.5-24
4wd Standard Tires (agFront: 6.00-12. Rear: 12.4-16
2wd Optional Tires (agFront: 6.50-10. Rear: 12.4-16
Lawn/turf Fron25x8.50-14
Lawn/turf Rea13.6-16

Dimensions And Tires

Wheelbas61inches / 154cm
Weigh1930 to 2105 pounds
Front Tir4.00-15
2wd Rear Tir9.5-24

Serial Numbers

1981001
199170001

Capacity

Fue6.3gal / 23.8L
Hydraulic Syste4 gal/15.1 L
Front Axl3.2qts / 3.0L

Hydraulics

Typopen center
Capacit4 gal/15.1 L
Pressur2050psi / 141.3bar
Rear Valve2 OptOptional
Mid Valve2 OptOptional
Pump Flo5.6gpm / 21.2lpm
Total Flo5.6gpm (manual steering) / 21.2lpm 9.9gpm (power steering) / 37.5lpm
Steering Flo4.3gpm / 16.3lpm

Tractor Hitch

Rear TypI
Controposition control
Rear Lift (at 24815lbs / 369kg

Electrical

Grounnegative
Charging Systealternator
Charging Amp20
Battery Cc447
Battery Volt12

Speeds

DescriptionWith 12.4-16 R1 rear tires

Power Take Off Pto

Rear Pttransmission live OptOptional
Rear Rp540
Engine Rp2100@2600
Mid Ptlive OptOptional
Mid Rp2100

Serial Location

DescriptionSerial number plate above the PTO shaft on the John Deere 770

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