John Deere Q850M Mower Specs

Category: Mowers ➔
Manufacturer: John Deere ➔
Model: Q850M ➔

Blades

John Deere Q850M Mower Blades specifications
Blade Tip Speed	Approximately 18,000 fpm / 5486 m/min — Starting 2026 Model Year
Number	3 — Starting 2026 Model Year
Thickness	0.25 in. / 0.64 cm — Starting 2026 Model Year

Brakes

John Deere Q850M Mower Brakes specifications
Dynamic Braking	Dual hand-controlled levers — Starting 2026 Model Year
Park Brake	Internal wet disk — Starting 2026 Model Year
Park Brake Actuation	Hand lever — Starting 2026 Model Year

Buyer's note

John Deere Q850M Mower Buyer's note specifications
Warranty	36 months or 1200 hours, whichever comes first. First 24 months, no hour limitation. — Starting 2026 Model Year

Dimensions

John Deere Q850M Mower Dimensions specifications
Length	Foot platform up, 67.25 in. / 171 cm Foot platform down, 72 in. / 183 cm — Starting 2026 Model Year
Weight	1,120.00 lbs (508.02 kg) — Starting 2026 Model Year
Width - With Chute Down	74.00 in (187.96 cm) — Starting 2026 Model Year

Drivetrain

John Deere Q850M Mower Drivetrain specifications
Filter	Two internal and replaceable — Starting 2026 Model Year
Forward Speed	0-10 mph — Starting 2026 Model Year
Hydraulic Capacity	6.0 qt — Starting 2026 Model Year
Hydraulic Oil Cooler	Two 8.5 in. (22 cm) fans — Starting 2026 Model Year
Hydraulic Pumps	0.79 cu in. / 13 cc — Starting 2026 Model Year
Reverse Speed	0-5 mph — Starting 2026 Model Year
Speed Direction And Control	Twin hand-controlled levers — Starting 2026 Model Year
Speed Range	0-10 mph — Starting 2026 Model Year
Transmission	Tuff Torq TZT13 IHT — Starting 2026 Model Year
Wheel Motors	13 cu in. / 213 cc — Starting 2026 Model Year

Electrical System

John Deere Q850M Mower Electrical System specifications
Battery Voltage	12.0 v — Starting 2026 Model Year
Charge System	20.0 amp — Starting 2026 Model Year
Cold Cranking Amp	300.0 amp — Starting 2026 Model Year
Hour Meter	Display panel including hour meter, fuel level, engine speed, system voltage, low engine oil pressure indicator, starting interlock indicators (PTO, operator presence, park brake), caution warning, stop warning, and on-board diagnostics — Starting 2026 Model Year
Operator Presence Starting System	Yes — Starting 2026 Model Year

Engine

John Deere Q850M Mower Engine specifications
Air Cleaner	Heavy-duty canister type with safety element — Starting 2026 Model Year
Cooling	Forced air, with integrated clean out ports and oil cooler — Starting 2026 Model Year
Crankcase Capacity	2.4 qt — Starting 2026 Model Year
Cylinders	2 — Starting 2026 Model Year
Displacement	52.00 cu in (852.13 cu cm) — Starting 2026 Model Year
Engine Manufacturer/Model	FX850V — Starting 2026 Model Year
Engine Power	Gross at 3,600 rpm: 27 hp / 20.1 kW — Starting 2026 Model Year
Lubrication	Full pressure — Starting 2026 Model Year
Oil Filter	Full flow, replaceable — Starting 2026 Model Year

Fuel System

John Deere Q850M Mower Fuel System specifications
Fuel Tank Capacity	12.00 gal (45.42 l) — Starting 2026 Model Year
Fuel Tank Switch/Shut-Off Valve	No — Starting 2026 Model Year
Fuel Type	Gasoline — Starting 2026 Model Year

Key Specs

John Deere Q850M Mower Key Specs specifications
Blade Tip Speed	Approximately 18,000 fpm / 5486 m/min — Starting 2026 Model Year
Caster Wheels	13x5-6 — Starting 2026 Model Year
Drive Wheels	22x12-12 pneumatic / 22x11N12 Tweel — Starting 2026 Model Year
Engine Manufacturer/Model	FX850V — Starting 2026 Model Year
Engine Power	Gross at 3,600 rpm: 27 hp / 20.1 kW — Starting 2026 Model Year
Fuel Tank Capacity	12.00 gal (45.42 l) — Starting 2026 Model Year
Mower Deck Size	54-in. (137-cm) 7Iron™ PRO side-discharge 60-in. (152-cm) 7Iron™ PRO side-discharge — Starting 2026 Model Year
Speed Range	0-10 mph — Starting 2026 Model Year
Transmission	Tuff Torq TZT13 IHT — Starting 2026 Model Year
Warranty	36 months or 1200 hours, whichever comes first. First 24 months, no hour limitation. — Starting 2026 Model Year

Mower Decks

John Deere Q850M Mower Mower Decks specifications
Cutting Width	54/60 in. — Starting 2026 Model Year
Deck Construction	7-Iron™ PRO: one-piece forged steel — Starting 2026 Model Year
Deck Thickness	7 gauge / 0.180 in. / 4.6 mm — Starting 2026 Model Year
Discharge	Side — Starting 2026 Model Year
Height-Of-Cut Increments	0.25 in (0.63 cm) — Starting 2026 Model Year
Height-Of-Cut Range	1.5-5 in. — Starting 2026 Model Year
Mower Deck Size	54-in. (137-cm) 7Iron™ PRO side-discharge 60-in. (152-cm) 7Iron™ PRO side-discharge — Starting 2026 Model Year

PTO

John Deere Q850M Mower PTO specifications
Drive	V-belt — Starting 2026 Model Year
Type	Electro-magnetic with brake, 200 lb-ft / 271 Nm — Starting 2026 Model Year

Tires

John Deere Q850M Mower Tires specifications
Drive Wheels	22x12-12 pneumatic / 22x11N12 Tweel — Starting 2026 Model Year
Load Rating	4 PR — Starting 2026 Model Year

Wheels

John Deere Q850M Mower Wheels specifications
Caster Wheel Type	Flat free — Starting 2026 Model Year
Caster Wheels	13x5-6 — Starting 2026 Model Year
Front Anti-Scalp Rollers	RH, center, LH — Starting 2026 Model Year

Our Main Office

Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200

About Us

Construction Equipment Guide covers the nation with its four regional newspapers, offering construction and industry news and information along with new and used construction equipment for sale from dealers in your area. Now we extend those services and information to the internet. Making it as easy as possible to find the news and equipment that you need and want.

Contents Copyrighted 2026, by Construction Equipment Guide, which is a Registered Trademark, registered in the U.S. Patent Office. Registration number 0957323. All rights reserved, nothing may be reprinted or reproduced (including framing) in whole or part without written permission from the publisher. All editorial material, photographs, drawings, letters, and other material will be treated as unconditionally assigned for publication and copyright purposes and are subject to Construction Equipment Guide’s unrestricted right to edit and comment editorially. Contributor articles do not necessarily reflect the policy or opinions of this publication.

Read our privacy policy here.
Mastodon