John Deere GX85 Engine Specifications

When it comes to lawn care equipment, John Deere has long been a trusted name, synonymous with quality and innovation. Among their impressive lineup of lawnmowers, the John Deere GX85 stands out as a reliable workhorse designed to meet the demands of homeowners and professionals alike. At the heart of this impressive machine lies its engine, a critical component that powers its performance.

In this blog post, we’ll delve deep into the specifications of the John Deere GX85 engine, exploring its power, capabilities, and features. Whether you’re a seasoned landscaper or a proud homeowner looking to keep your lawn pristine, understanding the GX85’s engine specifications is key to making an informed choice and achieving outstanding results.

John Deere GX85 Engine Specifications

Specification Value
Engine Make Briggs and Stratton
Engine Model 28M707
Cylinders One
Engine Bore 87 mm (3.44 in.)
Engine Stroke 78 mm (3.06 in.)
Cycle Four
Fuel Gasoline
Spark Plug Gap 0.762 mm (0.030 in.)
Spark Plug Torque 25 Nm (18 lb-ft)
Air Cleaner Dry element
Starter Electric
Starter Volts 12
Crankcase Dry Capacity 1.4 L (1.5 qt.)
Fuel Capacity 4.8 L (1.24 gal.)

John Deere GX-85 Transmission

Description Peerless 915 Series Transaxle
Transmission Type Five-Speed/Linear Shift
Forward Speeds 5
Reverse Speeds 1

JD GX85 Optional Transmission

Description Peerless 910 Series
Transmission Type Foot Controlled Variable Speed

Travel Speeds

Gear Speed (km/h) Speed (mph)
First Gear 1.8 1.1
Second Gear 3.5 2.2
Third Gear 5.3 3.3
Fourth Gear 6.8 4.2
Fifth Gear 8.0 5.0
Reverse 3.1 1.9

John Deere GX85/SX85 Tractor PTO (Power take off)

Component Type
Mid PTO Independent
Clutch Mechanical

Wheels and Steering

Feature Specification
Drive Wheels 2WD
Steering Manual
Turning Radius 356 mm (14 in.)


Brake Type – Disk

Mower Deck

Feature Specification
Mower Type Side Discharge
Cutting Blade 1
Blade Bolt Torque 68 – 79 Nm (50 – 58 lb-ft)
Cutting Width 76.2 cm (30 in.)
Cutting Height (approx.) 25 to 102 mm (1 to 4 in.)
Height Adjustment 7 positions
Ground Clearance 95 mm (3.74 in.)

John Deere GX-85 Dimensions

Dimension Measurement
Overall Height 101 cm (39.76 in.)
Overall Width 79 cm (31.1 in.)
Overall Length 157 cm (62 in.)
Weight (approx.) 153 kg (340 lbs.)

Tire Size

Tire Type Size Inflation Pressure
Front Tire 11×4.00-5 100 kPa (14 psi)
Rear Tire 16×6.50-8 70 kPa (10 psi)


In the world of lawn care, knowledge is power, and understanding the engine specifications of your equipment can make all the difference. The John Deere GX85, with its robust and reliable engine, exemplifies the brand’s commitment to excellence.

As we’ve explored in this blog post, its power, displacement, and unique features make it a standout choice for those who demand nothing but the best for their lawns.

Whether you’re drawn to the GX85’s ability to tackle challenging terrain, its impressive fuel efficiency, or its user-friendly design, one thing is clear: John Deere has engineered a machine that’s built to perform. By taking the time to learn about the GX85’s engine specifications, you’ve armed yourself with the knowledge needed to make an informed decision and maximize the potential of your lawn care efforts.

So, go ahead and confidently choose the John Deere GX85, knowing that you’ve chosen a mower that’s not only backed by a trusted brand but also equipped with an exceptional engine that’s ready to tackle any grassy challenge that comes its way. Happy mowing!

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