The Complete Guide to the John Deere 4440 Tractor

The John Deere 4440 is a versatile row-crop tractor that was produced from 1978-1982. With its powerful diesel engine, this machine can handle a wide variety of farm tasks. In this friendly guide, we’ll explore everything you need to know if you own (or are looking to buy) this classic tractor.

Overview of the John Deere 4440

The 4440 is equipped with a 6-cylinder turbocharged diesel engine producing 112 horsepower at the drawbar and 130 horsepower at the PTO. This gives you plenty of power for tough field work.

The tractor transmission options include:

  • 16-speed partial power shift
  • 8-speed full power shift

It has a wheelbase of 106.7 inches and weighs between 11,780-13,270 pounds depending on configuration.

Some key features farmers appreciate are:

  • Closed-center hydraulic system
  • Standard Sound-Gard cab
  • Wet disc brake system
  • Dual remote hydraulics
  • 2-wheel drive and 4-wheel drive variants

With a rugged engine, advanced hydraulics, and smooth-shifting transmission, it’s easy to see why the 4440 became popular for row-crop farms and cattle operations.

Common John Deere 4440 Attachments

The 4440 is compatible with various attachments to increase its versatility:

  • Front-end loaders – Popular options are the John Deere 148 and 158 models. These allow you to use the tractor for material handling tasks.
  • Row crop cultivators – Attach these tools to plow and cultivate crops.
  • Sprayers – Mounted and pull-type sprayers can be connected for applying chemicals and fertilizers.
  • Mowers – Rotary cutters and finish mowers are handy for property maintenance.
  • Hay tools – Equip it with balers, rakes, tedders and more.
  • Tillage tools – Moldboard plows, discs, cultivators and chisel plows make field preparation a breeze.

As you can see, the 4440 is extremely versatile when paired with the right implements.

Common John Deere 4440 Problems and How to Fix Them

Even reliable machines like the 4440 can develop issues over time. Here are some common problems and potential solutions:

Problem: Engine Won’t Start

Potential Causes:

  • Clogged fuel filters
  • Contaminated fuel system
  • Faulty injectors/fuel pumps
  • Low compression


  • Replace fuel filters
  • Clean out fuel system
  • Test/repair injectors and fuel pumps
  • Perform compression test – rebuild top end if needed

Problem: Engine Dies While Operating

Potential Causes:

  • Insufficient coolant temperature
  • Air in fuel system
  • Clogged filters
  • Damaged/misadjusted injectors


  • Allow proper warm-up before operation
  • Bleed fuel system
  • Replace fuel filters
  • Test/repair/replace injectors

Problem: Knocking Noise from Engine

Potential Causes:

  • Incorrect injection timing
  • Clogged/worn injector tips
  • Low oil level
  • Failed piston rings
  • Loose flywheel screws


  • Adjust injection timing
  • Clean/replace injector tips
  • Check oil level and add if needed
  • Replace piston rings
  • Re-torque flywheel screws

For any engine repairs, be sure to consult your John Deere service manual. This will provide step-by-step instructions tailored to your tractor.

Tips for Buying a Used John Deere 4440

If you’re looking to save money over a new tractor purchase, a used 4440 can be a smart buy. When evaluating a used 4440 for purchase, keep these tips in mind:

  • Inspect the hydraulic fittings and hoses for leaks, cracks or loose connections. Problems here can lead to catastrophic failure down the road.
  • Check the hour meter. Tractors with less than 5,000 hours generally have plenty of useful life remaining.
  • Take it for a test drive in both 2WD and 4WD modes. Listen for any unusual engine or transmission noises.
  • Examine tire wear patterns. Irregular wear can indicate axle or driveline misalignment.
  • Look for evidence of blown head gaskets – white deposits around the radiator cap can be a telltale sign.
  • Verify all electrical systems are operational, including lights, gauges and safety switches.

If maintained properly, a used John Deere 4440 can provide many more years of reliable service. Use the tips above during your evaluation process to avoid purchasing a “lemon”.

Wrapping Up

The John Deere 4440 is packed with features that made it a staple on farms and ranches throughout the 1980s. With proper care and maintenance, these tractors continue working hard today.

I hope this guide gave you a helpful overview of the 4440’s capabilities, common attachments, troubleshooting tips and things to watch out for when buying used. Let me know if you have any other questions – I’m happy to help fellow tractor owners keep these machines roaring!

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