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

Engine MakeBriggs and Stratton
Engine Model28M707
Engine Bore87 mm (3.44 in.)
Engine Stroke78 mm (3.06 in.)
Spark Plug Gap0.762 mm (0.030 in.)
Spark Plug Torque25 Nm (18 lb-ft)
Air CleanerDry element
Starter Volts12
Crankcase Dry Capacity1.4 L (1.5 qt.)
Fuel Capacity4.8 L (1.24 gal.)

John Deere GX-85 Transmission

DescriptionPeerless 915 Series Transaxle
Transmission TypeFive-Speed/Linear Shift
Forward Speeds5
Reverse Speeds1

JD GX85 Optional Transmission

DescriptionPeerless 910 Series
Transmission TypeFoot Controlled Variable Speed

Travel Speeds

GearSpeed (km/h)Speed (mph)
First Gear1.81.1
Second Gear3.52.2
Third Gear5.33.3
Fourth Gear6.84.2
Fifth Gear8.05.0

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

Mid PTOIndependent

Wheels and Steering

Drive Wheels2WD
Turning Radius356 mm (14 in.)


Brake Type – Disk

Mower Deck

Mower TypeSide Discharge
Cutting Blade1
Blade Bolt Torque68 – 79 Nm (50 – 58 lb-ft)
Cutting Width76.2 cm (30 in.)
Cutting Height (approx.)25 to 102 mm (1 to 4 in.)
Height Adjustment7 positions
Ground Clearance95 mm (3.74 in.)

John Deere GX-85 Dimensions

Overall Height101 cm (39.76 in.)
Overall Width79 cm (31.1 in.)
Overall Length157 cm (62 in.)
Weight (approx.)153 kg (340 lbs.)

Tire Size

Tire TypeSizeInflation Pressure
Front Tire11×4.00-5100 kPa (14 psi)
Rear Tire16×6.50-870 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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