John Deere 140
The John Deere 140 is a versatile utility tractor that has evolved over time. In its modern incarnation, it is part of the 6R series and offers impressive performance capabilities. The tractor is equipped with a John Deere PowerTech PSS 4-cylinder engine with a displacement of 4.5 liters. It delivers a rated engine power of 140 horsepower, with a maximum output of 154 horsepower.
The 6R 140 model features an Infinitely Variable Transmission (IVT) as standard, allowing for speeds ranging from 0.05 to 42 km/h. Optional transmissions include a 50 km/h IVT and 24-speed AutoQuad PLUS ECO variants. The hydraulic system is robust, with a standard pump output of 114 L/min, which can be upgraded to 155 L/min with an optional 60 cc pump.
This tractor is designed for versatility, with a rear hitch capable of lifting 3600 kg (standard) or 4100 kg (optional). The base machine weight is approximately 6200 kg, making it suitable for a wide range of agricultural tasks. The 6R 140 also incorporates modern emission control technologies, including a DOC/DPF/SCR after-treatment system to meet Final Tier 4 emission standards.
The cab of the 6R 140 is designed for operator comfort, featuring the XXL ComfortView cab with a spacious 3.33 m³ interior. This tractor is part of a broader 6R series that includes models with varying power outputs and frame sizes, allowing farmers to choose the best fit for their specific needs.
It’s worth noting that there have been earlier iterations of the John Deere 140, including lawn tractors. An older model from the late 1960s featured a 14-horsepower K321 engine with a displacement of 512 cc. This showcases how the model number has been used across different product lines and how John Deere has continuously evolved its offerings to meet changing agricultural needs.
John Deere 140 Specs
The John Deere 140 is a versatile utility tractor equipped with a John Deere PowerTech PSS 4-cylinder engine. This engine has a displacement of 4.5 liters and delivers impressive power. The rated engine power is 140 horsepower (103 kW), while the maximum engine power reaches 154 horsepower (113 kW). The tractor’s PTO (Power Take-Off) system is equally robust, with a rated PTO power of 110 horsepower (82 kW) and a maximum PTO power of 135 horsepower (101 kW).
The standard transmission on the John Deere 140 is an Infinitely Variable Transmission (IVT), allowing for speeds ranging from 0.05 to 42 km/h. Optional transmissions include a 50 km/h IVT and 24-speed AutoQuad PLUS ECO variants. The hydraulic system is highly capable, featuring a standard pump output of 114 L/min (30 gpm) with a 45 cc pump. An optional 60 cc pump increases the output to 155 L/min (41 gpm).
To meet Final Tier 4 emission standards, the John Deere 140 incorporates advanced after-treatment technologies. These include a diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR) system using diesel exhaust fluid (DEF).
The tractor comes with Intelligent Power Management (IPM), providing an additional 20 horsepower for transport and mobile PTO applications. It also offers a 10 percent power boost capability. The 6R 140 model is part of a broader series that includes various power outputs and frame sizes, allowing farmers to choose the best fit for their specific needs.
John Deere 140 Parts
The John Deere 140 tractor has been produced in various models over the years, with different engine configurations. Some models feature a Kohler K301AS engine, while others use a K321AS 14 HP engine. Key engine parts include:
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Spark plug
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Engine oil filter
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Air filter
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Fuel filter
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Muffler
Electrical components for the John Deere 140 include:
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Battery (12V)
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Voltage regulator (10 Amp)
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Starter
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Headlight bulb
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Wiring harness
The fuel system of the John Deere 140 consists of:
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Fuel tank filler cap
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Carburetor bowl (for models with Kohler engines)
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In-line fuel filter
The air intake system includes an air filter that should be changed at regular intervals.
The John Deere 140 is available in hydrostatic transmission models. Key components include:
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Traction drive belt
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Axle bearings
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Drive shaft bearings
The 140 can be equipped with different mower decks. Parts for the mower deck include:
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Mower blades (various types available)
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Mower deck leveling gauge
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Gage wheels
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Flat mower belt
For models with hydraulic capabilities:
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Hydraulic outlet plugs
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Hydraulic hose caps (for implements)
Other important parts for the John Deere 140 include:
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Hood rivets
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Front bumper plate
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Pedestal isolator
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Various decals for safety and operation instructions
Regular maintenance items for the John Deere 140 include:
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Engine oil (10W30 grade)
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Multi-purpose grease
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Replacement blades
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Filters (air, oil, fuel)
John Deere 140 Prices
The John Deere S140, a 22-horsepower lawn tractor with a 48-inch mower deck, is priced at approximately $2,899 for new models. This price may vary slightly depending on the dealer and location.
The John Deere 6R 140, a utility tractor with 140 horsepower, has a wide price range depending on its condition and age. New models of the 6R 140 are typically priced between £89,500 and £110,000 in the UK. Used models can vary significantly in cost based on hours of use and maintenance history, with some listings starting around £55,948 for older or higher-hour tractors.
The John Deere D140, a predecessor to the S140 with similar specifications, is often available in the used market. Prices for these models generally range from $1,500 to $2,500, depending on their condition and included attachments.
Prices for John Deere 140 series tractors and lawn mowers depend on factors such as model year, condition, hours of use (for tractors), and optional features or attachments. Dealer discounts or promotions may also impact the final purchase price.
Where to Check for Pricing:
To check prices for John Deere 140 models, visit official John Deere dealer websites. These platforms provide up-to-date pricing for new models, promotions, and financing options. They also list specifications and compatible attachments.
Used John Deere 140 tractors and lawn mowers can be found on online marketplaces. These platforms allow you to compare prices based on the condition, age, and included attachments of the equipment.
Auction sites often feature John Deere 140 tractors and lawn mowers at competitive prices. These auctions can be a good source for both older models and well-maintained used equipment.
Visiting local John Deere dealerships is another reliable way to obtain pricing. Dealers often have both new and used models available and may offer trade-in options or discounts.
Online forums and community groups dedicated to farming or lawn care often feature discussions about pricing for John Deere 140 models. These platforms can provide insights into fair market values based on real-world purchases.
John Deere 140 Attachments
The John Deere 140 is compatible with 38-inch and 46-inch mid-mount mower decks, allowing for efficient lawn maintenance. These decks are designed for precision cutting and durability.
For handling snow, the John Deere 140 supports a snowblower attachment and a front blade. These attachments make it versatile for winter tasks, such as clearing driveways and pathways.
The tractor can be equipped with the Model 33 tiller, which comes in widths of 26 inches, 34 inches, and 42 inches. This attachment is ideal for preparing soil for planting.
A front-end loader attachment is available for the John Deere 140, enabling it to handle tasks like moving soil, gravel, or other materials.
The hydraulic system of the John Deere 140 supports various implements, including hydraulic hose caps and outlet plugs. These are essential for operating attachments that require hydraulic power.
The tractor is compatible with rear and center blades, useful for grading, leveling, or clearing debris. These blades can be adjusted for different angles to suit specific tasks.
Grass clipping collection systems are available for the John Deere 140, helping to maintain a clean lawn after mowing. These systems are easy to attach and remove.
Wheel weights and ballast options can be added to improve traction and stability when using heavy attachments or working on uneven terrain.
For agricultural or landscaping needs, sprayers and spreaders can be attached to the John Deere 140. These are useful for applying fertilizers, seeds, or pesticides efficiently.
Poly dump carts are available as an accessory for hauling materials like mulch, soil, or tools around your property.
John Deere 140 Reviews
The John Deere S140 lawn tractor has received generally positive reviews from users and experts. It is considered a reliable and efficient mower for residential use, particularly suited for lawns up to 2 acres in size.
Users praise the S140’s cutting performance, noting that its 48-inch Edge™ Cutting System provides a superior and even cut. The 22-horsepower V-twin engine is reported to have ample power for mulching, mowing, and bagging in various conditions. Many reviewers appreciate the mower’s ability to handle tough mowing situations effectively.
The S140 is lauded for its comfortable operator station. Features like the 15-inch high-back seat with open design, side-by-side foot pedals, and adjustable controls contribute to a pleasant mowing experience. Users find the controls intuitive and easy to use, enhancing overall operator comfort.
Reviewers consistently mention the S140’s solid construction. The welded frame receives particular praise for its robustness, setting it apart from some competitors. The durable build quality gives users confidence in the mower’s longevity.
While some users appreciate the traditional oil change system, others note that it lacks the easy-change oil system found in higher-end models. Regular maintenance is emphasized as crucial for the mower’s longevity and performance.
Many reviewers consider the S140 a good value proposition, offering a balance of performance and affordability within the John Deere lineup. It’s often recommended as a suitable choice for first-time riding mower buyers.
Some users report rattling noises when the mower deck is engaged, which could potentially lead to wear over time. A few reviewers also mention that the lack of power steering might be noticeable for some users, especially when compared to higher-end models.
The John Deere S140 is generally well-received as a reliable, efficient, and comfortable lawn tractor suitable for residential use. Its solid performance, durable construction, and user-friendly features make it a popular choice among homeowners looking for a quality mower at a reasonable price point.
John Deere 140 Battery
The John Deere 140 typically uses a 12-volt battery. For lawn tractors in this series, the battery often has a capacity of around 24 amp-hours (AH). The cold cranking amps (CCA) rating for these batteries is usually in the range of 300-350 CCA, which provides sufficient starting power for the engine.
John Deere offers two main types of batteries for their equipment:
StrongBox Original Equipment: These are premium batteries designed to meet John Deere’s factory specifications. They offer higher cold-cranking amps and come with a longer warranty.
StrongBox Standard-Duty: These are more economical alternatives suitable for light-duty or older equipment. They meet industry standard specifications and come with a standard warranty.
John Deere batteries for the 140 series typically include:
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Maintenance-free design
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Durable polypropylene case and cover
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Advanced grid alloy to protect against common causes of failure
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Vibration resistance for off-road conditions
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Ability to withstand high temperatures
While many John Deere batteries are maintenance-free, proper care can extend their lifespan:
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Keep the battery clean and free of corrosion
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Ensure proper charging, especially during periods of non-use
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Check the electrolyte levels in non-sealed batteries
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Secure the battery properly to prevent vibration damage
Replacing the battery on a John Deere 140 is a straightforward process:
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Ensure the mower is off and the key is removed
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Open the hood to access the battery
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Disconnect the negative (black) cable first, then the positive (red) cable
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Remove the old battery and install the new one
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Reconnect the positive cable first, then the negative cable
Lead-acid batteries are highly recyclable. When replacing your John Deere 140 battery, be sure to recycle the old one at an appropriate facility or through a battery retailer.
John Deere 140 Parts Diagram
The John Deere 140 tractor is equipped with a Kohler K321AS 14 HP engine. Key engine parts include:
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Spark plug
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Engine oil filter
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Air filter
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Fuel filter (in-line)
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Muffler
Important electrical components of the John Deere 140 include:
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12V battery
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Voltage regulator (10 Amp)
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Starter
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Ignition switch
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Wiring harness
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Headlight bulb
The fuel system consists of:
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Fuel tank with filler cap
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Carburetor
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In-line fuel filter
The air intake system includes an air filter that requires regular replacement.
The John Deere 140 features a hydrostatic transmission. Key components include:
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Traction drive belt
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Axle bearings
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Drive shaft bearings
The mower deck assembly includes:
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Mower blades
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Mower deck leveling gauge
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Gage wheels
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Flat mower belt
For models with hydraulic capabilities:
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Hydraulic outlet plugs
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Hydraulic hose caps (for implements)
Other important components include:
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Hood rivets
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Front bumper plate
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Pedestal isolator
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Various decals for safety and operation instructions
Regular maintenance items for the John Deere 140 include:
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Engine oil (10W30 grade)
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Multi-purpose grease
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Replacement blades
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Filters (air, oil, fuel)
John Deere 140 Problems
The John Deere 140 series tractors can experience various engine problems. Common issues include poor engine performance due to dirty fuel systems or old fuel. Engines may fail to start, run unevenly, or miss under load. Vapor lock and overheating are also reported problems. Some users have noted difficulties with the engine idling properly.
Electrical issues are another area of concern for John Deere 140 owners. These can manifest as starting problems, often related to corroded battery terminals, uncharged batteries, or blown fuses. Some users have reported issues with the headlights not working properly.
Fuel system problems are frequently reported. These can include clogged fuel filters, issues with the carburetor, or problems with the fuel pump. Some owners have experienced situations where the tractor runs for a short time and then dies, suggesting fuel delivery issues.
The mower deck can present its own set of problems. Uneven cutting, streaking, or scalping of the lawn are common complaints. These issues can be caused by dull blades, improper deck leveling, or incorrect tire pressure.
Some users have reported problems with the hydrostatic transmission, including difficulties with forward or reverse motion. Worn or damaged drive belts can also cause operational issues.
Many problems stem from inadequate maintenance. These can include issues caused by dirty air filters, old spark plugs, or improper oil levels. Regular maintenance is crucial to prevent these types of problems.
Overheating has been noted as an issue in some John Deere 140 models, potentially leading to engine damage if not addressed promptly.
Starting problems are frequently reported, especially in older models. These can be caused by various factors, including battery issues, fuel system problems, or faulty safety switches.
While the John Deere 140 series is generally well-regarded, these issues highlight the importance of regular maintenance and prompt attention to any developing problems.
John Deere 140 Wiring Diagram
The wiring diagram for the John Deere 140 provides a detailed layout of the electrical system, illustrating how various components are interconnected. It is essential for troubleshooting electrical issues, performing repairs, or restoring the tractor.
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12-volt battery
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Starter motor
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Solenoid
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Ignition switch
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Voltage regulator
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Alternator or generator
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Wiring connections for maintaining battery charge
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Headlights
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Taillights (if applicable)
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Light switch
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Neutral safety switch
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PTO (Power Take-Off) safety switch
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Seat safety switch
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Magneto or ignition coil
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Spark plug wiring
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Engine kill switch
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Connections for hydraulic lift controls (if equipped)
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PTO engagement wiring
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Fuse block protecting various circuits
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Relays for high-current components
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The wiring diagram typically includes color-coded wires and labeled terminals, making it easier to identify connections. It shows the routing of wires from the battery to major components like the starter, ignition system, and lights.
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Diagnosing electrical problems such as starting issues or non-functional lights.
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Replacing or repairing damaged wires.
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Ensuring proper connections during restoration projects.
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Verifying compatibility when installing new electrical components.
A wiring diagram is an indispensable tool for maintaining and repairing the John Deere 140’s electrical system.
John Deere 140 Mower Deck
The John Deere 140 mower deck is a 48-inch cutting system designed for efficient lawn maintenance. It’s compatible with various John Deere lawn tractors, including the D140 model.
The mower deck consists of several important parts:
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Mower blades (3-in-1, bagging, or mulching options available)
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Flat mower belt
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Gage wheels
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Mower deck leveling gauge
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Pulleys and spindles
Proper deck leveling is crucial for an even cut. The process involves:
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Using blocks or a leveling gauge to measure deck height
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Adjusting the deck using 15mm wrenches or sockets
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Ensuring the deck is level from side-to-side and front-to-back
Regular maintenance of the mower deck includes:
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Cleaning the deck after each use
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Using the washout port to remove grass clippings and debris
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Checking and replacing the mower belt as needed
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Sharpening or replacing blades regularly
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Lubricating moving parts and checking for wear
Several accessories are available for the 48-inch mower deck:
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Mulch kit for finer clippings
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Bagging system for collecting grass
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Blade sets for different cutting needs
The mower deck can be removed for maintenance or storage:
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Lower the deck to its lowest position
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Remove the mower belt from the engine pulley
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Disconnect the front draft arms and rear lift links
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Slide the deck out from under the tractor
Installation is the reverse of this process.
The 48-inch deck provides:
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Wide cutting swath for efficient mowing
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Adjustable cutting heights
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Even cut when properly leveled and maintained
Regular care and proper use of the John Deere 140 mower deck ensure optimal performance and longevity of the equipment.
FAQ
Common engine problems include poor performance due to dirty fuel systems, old fuel, or improper fuel. Other issues can be vapor lock, overheating, and difficulties with idling properly.
Check if the brake pedal is depressed, the mower is disengaged, and the spark plug wire is connected. Ensure the battery is charged, connections are clean, and the fuel filter isn’t clogged. Also, verify the safety switches are functioning correctly.
Regular maintenance includes changing the engine oil and filter, cleaning or replacing the air filter, replacing the fuel filter, lubricating moving parts, sharpening or replacing mower blades, and checking/adjusting the mower deck.
Oil should be changed every 50 hours of operation or annually, whichever comes first. More frequent changes may be necessary in dusty conditions.
Use fresh, clean gasoline with an octane rating of 87 or higher. Avoid fuel blended with alcohol or ether, as it can cause performance issues.
Use blocks or a leveling gauge to measure deck height. Adjust the deck using 15mm wrenches or sockets, ensuring it’s level from side-to-side and front-to-back.
Uneven cutting can be caused by dull blades, improper deck leveling, incorrect tire pressure, or mower wheels that aren’t adjusted correctly. Travel speed that’s too fast can also contribute to this issue.
Remove the blades, clean them, and use a file or grinder to sharpen the cutting edge. Ensure the blades are balanced before reinstalling them.
Check if the cooling fins are plugged, ensure the engine oil level is correct, and verify that the engine isn’t being operated too long at a slow idle speed. Also, make sure the air intake screen isn’t blocked.
Lower the deck, remove the old belt from the engine pulley and mower deck pulleys. Install the new belt, ensuring it’s routed correctly around all pulleys and tensioners.
Loss of power can be due to a clogged air filter, dirty fuel system, faulty spark plug, or engine overload. Ensure you’re not cutting grass that’s too tall or wet, and that the engine RPM is at full throttle.
Add fuel stabilizer to the gas tank, change the oil, clean the mower deck thoroughly, and remove the battery for storage in a cool, dry place. Lubricate all grease points before storage.
Use 10W30 engine oil for most conditions. Refer to your operator’s manual for specific recommendations based on your climate and operating conditions.
Carburetor adjustment typically involves adjusting the idle speed and mixture screws. However, this is a delicate process and may be best left to a professional if you’re not experienced with small engine repair.
Excessive vibration can be caused by unbalanced or bent mower blades, loose or damaged belts, or debris wrapped around mower spindles. Check these components and clean or replace as necessary.