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Home / Lawn and Garden Tractors / John Deere Lawn Tractors / John Deere X166

John Deere X166 Lawn Tractor

The John Deere X166 is a 2WD lawn tractor from X100 series. This model was manufactured from 2018 to 2020. The driveline consists of 40.1 cu.in (656 cc) Briggs and Stratton 40N877 Intek 4-cycle V-twin cylinder OHV vertical shaft air-cooled gasoline engine with a rated power of 18 Hp (13.4 kW), and Tuff Torq K46 hydrostatic transmission with infinite forward and reverse gears.

The John Deere X166 is equipped with a manual steering system, electric PTO clutch, disc brakes, 16x6.50-8 front tires, and 22x9.50-12 rear tires. The operating weight is 531 lbs (241 kg). The John Deere X166 tractor is compatible with a 48" mid-mount 3-blade mower deck with a cutting height of 1.0-4.0" (25-102 mm) and mechanical lift system.

Engine Specs

Engine Model ..................... Briggs and Stratton 40N877 Intek IC
Engine Type ..................... 4-cycle V-twin cylinder OHV air-cooled gasoline engine
Number of Cylinders ..................... 2
Displacement, cu.in (cc) ..................... 40.1 (656)
Cylinder Bore, in (mm) ..................... 2.97 (75.0)
Piston Stroke, in (mm) ..................... 2.89 (73.0)
Rated Engine Power, hp (kW) ..................... 18.0 (13.4)
Rated Engine Speed, rpm ..................... 3600
Idle Speed, rpm ..................... 1600
Cylinder Bore Type ..................... Cast iron sleeve
Fuel System Type ..................... Carburetor
Carburetor Type ..................... Float-feed
Fuel Pump Type ..................... Integral
Governor Type ..................... Mechanical
Lubrication System ..................... Full pressure with spin-on oil filter
Air Cleaner Type ..................... Paper cartridge with a foam pre-cleaner
Cooling System ..................... Forced air
Ignition System ..................... Electronic
Starting System ..................... Electric starter
Spark Plug Type ..................... Champion QC12YC
Spark Plug Gap, in (mm) ..................... 0.03 (0.76)
Fuel Tank Capacity, gal (L) ..................... 2.4 (9.1)
Oil Capacity, qts (L) ..................... 2.0 (1.9)

Electrical System

Electrical System Rating, Volts ..................... 12
Charging System ..................... Alternator
Alternator Rating, Amps ..................... 9
Starter Type ..................... Electric
Battery Voltage, Volts ..................... 12

Power Take Off

PTO Operational Type ..................... Independent
PTO Clutch ..................... Electric
PTO Speed, rpm ..................... 2700

Transmission

Transmission Model ..................... Tuff Torq K46
Transmission Type ..................... Belt-driven hydrostatic
Number of Forward Gears ..................... Infinite
Number of Reverse Gears ..................... Infinite
Maximum Forward Speed, mph (kph) ..................... 5.5 (8.9)
Maximum Reverse Speed, mph (kph) ..................... 3.2 (5.1)

Wheels and Tires

Wheel Drive System ..................... 2WD 4x2
Steering Configuration ..................... Front steer
Steering System ..................... Manual
Brakes Type ..................... Disc
Front Tire Size ..................... 16x6.50-8
Rear Tire Size ..................... 22x9.50-12

Dimensions and Weight

Wheelbase, in (mm) ..................... 48.3 (1225)
Overall Length, in (mm) ..................... 78.5 (1990)
Overall Height, in (mm) ..................... 46 (1160)
Overall Width, in (mm) ..................... 42 (960)
Operating Weight, lbs (kg) ..................... 531 (241)

Mower Deck

Mower Deck Model ..................... John Deere 48 Edge
Mower Deck Type ..................... Mid-mount, side discharge
Number of Blades ..................... 3
Cutting Width, in (mm) ..................... 48 (1220)
Cutting Height, in (mm) ..................... 1.0-4.0 (25-102)
Drive System ..................... Belt
Lift System ..................... Mechanical

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