John Deere X390

2026 John Deere Lawn & Garden X390 48-in deck

X390
Lawn Tractor with 48-inch Deck

• 23-hp (17.2-kW)* iTorque™ Power System
• 48-in. Accel Deep™ mower deck, compatible with optional MulchControl™ kit with one-touch technology
• Power two-wheel steer
• Assembled in Wisconsin
• 4 year/300 hour bumper-to-bumper warranty

Features may include: 
Engine is smooth running and reliable V-twin air-cooled design
The tractor is powered by a John Deere iTorque power system, a combination of engine features and an exclusive hood design that provide superior lugging ability, even cooling, and durability.

A 23-hp (17.2-kW) V-twin engine provides plenty of power and torque to handle tough mulching, mowing, and bagging conditions.

Key engine features include:

• 23 hp (17.2 kW)
• Large 44.3 cu in. (726-cc) displacement
• V-twin air-cooled design that provides smooth, quiet power

Quality features include:

• Cast-iron cylinder liners
• Overhead valves
• Full-pressure lubrication
• Replaceable oil filter

Dual-stage air cleaner V-twin design:

• Excellent power and performance
• Easy starts
• Smooth operation

Flywheel alternator

A flywheel alternator provides plenty of capacity to quickly recharge the battery and power electrical equipment, such as lights or a sprayer:

• 12-amp charging capacity
• Regulated to keep the battery at full charge without risk of overcharging

Large fuel tank and convenient fuel gauge minimize the number of stops for fuel and chance of running out of fuel:

• Fuel tank has a large, 3.3-U.S. gal. (12.5-L) capacity for more hours of operation between refills.
• Large, 3-in. (7.6-cm) diameter fuel tank filler opening makes adding fuel easy.
• Located on the left fender
• Helps eliminate spillage
• Electronic fuel gauge on the dash display allows the operator to easily monitor the amount of fuel in the tank.

48-in. (122-cm) Accel Deep™ (48A) Mower Deck cuts clean and is versatile
 

The 48-in. (122-cm) Accel Deep Mower Deck is a forged-steel, deep, flat-top design that delivers excellent cut quality, productivity, cleanliness, durability, and versatility. Optimal performance and dispersion of clippings is provided, even at faster mowing speeds or in tall grass:

• 4.83-in. (12.3-cm) depth throughout the entire deck shell for optimum mowing, mulching, and bagging performance
• Optional lever-action or electric one-touch MulchControl™ system provides superior mulching performance and versatility.
• Forged-steel design eliminates sharp edges and corners where material can build up and diminish mowing performance
• Mower deck is suspended from the vehicle for a smooth and level cut
• Adjustable mower wheels, positioned just above ground level, help reduce scalping 
• 0.25-in. (6.4-mm) cut-height increments allow the mower to be set at the desired cut height
• Compatible with high-performance Power Flow™ material collection systems
• For use on X330, X350, X354, X370, X380, X384, X390, X394, X570, X580, X584, and model year 2016 and newer X590 Tractors

Excellent cut quality

Deep mower-deck forging gives excellent cut quality. It allows the cut and suspended material room to exit the deck without getting recut:

• Reducing the amount of recutting enables more power to be used to cut incoming grass, which greatly improves mower capacity.
• Helps maintain excellent cut quality at faster mowing speeds
• Clean flow of material out of discharge area prevents cut material from interfering with cutting the incoming grass, making it possible for the blades to cut incoming material cleanly.
• Even in mulching mode, cut evenness is improved compared to other designs because the additional depth allows for continuous circulation, optimal recutting, and an even distribution of clippings.
• Exact Adjust deck-leveling system allows for easy and accurate leveling of the mower deck.

Productivity - getting the job done fast

Deep mower-deck forging gives high productivity, which gets the job done fast. It allows the cut and suspended material room to exit the deck quickly, reducing the amount of recutting so more power is available to process incoming grass:

• Greatly improves mower's capacity to maintain excellent mowing performance in difficult mowing conditions and at higher speeds

Large discharge opening is both high and wide to handle more material:

• Gives a smooth, even discharge of clippings at all mowing speeds
• Reduces the chance of plugging, especially important when operating in wet, thick, or dense grass and when bagging
• The 48A Power Flow blower has an inlet housing with over 50 percent greater area than the 48X Power Flow blower used on previous machines.

Cleanliness - for the mower and the operator
The flat-top shape of the deck forging is optimal for keeping itself and the operator clean:

• There are few places to catch and hold material on top and underneath the deck.
• Top of deck stays cleaner, reducing time and effort needed for cleaning and service
• Underside of deck is self-cleaning to maintain optimum performance without buildup of material to interfere with the flow of air and clippings
• Less need to clean and remove buildup of material from underside deck
• The depth of the Accel Deep mower deck minimizes the amount of material that escapes from the front of the deck:
• Limited amount of material to drift onto the operator and mower deck
• Even for material discharged out the chute, less recutting results in larger pieces that are less likely to end up on the operator
• Mulching prevents the discharge of material completely and MulchControl makes mulching a practical solution for most mowing situations.

Cleaning a mower deck, both top and bottom, is one of the most frequent maintenance activities:

• The flat-top design reduces places for material to build up and makes material that does collect easy to remove.

7-bu (247-L) Power Flow rear bagger

An optional 7-bu (247-L) rear bagger material collection system (MCS) is available. It provides an efficient means of collecting grass clippings and leaves:

• The Power Flow blower and chute are easy to install. The Power Flow blower swings out for easy cleanout and cleanup.
• The hopper design provides modern styling, great bagging performance, cleaner operation, and easy-to-empty bags:
• 7-bu (247-L) capacity
• Easy-to-attach Power Flow blower (ordered separately)
• Easy-to-attach chute (ordered separately)
• Air exhaust duct
• Convenient spring-latch
• Airflow fill indicator
• Quik-Tatch mounting
• Sealed hopper top
• Loose-knit bags available

Larger 14-bu (493-L) and 19-bu (670-L) MCS are available, in addition to the 7-bu (247-L) MCS, for specific X300 and X500 Series Tractor models.