JD X166R Engine Specifications
Engine Model – Briggs and Stratton 40
Displacement – 656 cc (40 cu in.)
Engine Type – Gasoline
Net Power Output (HP) – 20 HP gross output
Shaft Output – Vertical
Cylinder Bore – Cast iron Dura-Bore
Bore x Stroke (in.) – 3.12 x 2.89
Cooling System – Air cooled
Air Cleaner Type – Cyclonic
Fuel Type – Regular gasoline
Fuel Pump – Yes
Fuel Filter – Yes
Fuel Tank Capacity – 7.6 L (2 gal)
Oil Capacity (qt.) – 2
Lubrication System – Full pressure
Ignition System – Electronic
Governor System – Mechanical
Carburetor – Yes
Throttle Control – Remote
Choke Control – Automatic
Fast Idle Engine Speed without Mower – 3150 ± 100 r/min
Max. RPM – 3,400
Spark Plug Gap – 0.76 mm (0.030 in.)
Spark Plug Torque – 20 Nm (15 lb-ft)
Cylinders – Twin
Air Filter – Catridge
Crankshaft – Vertical
Shaft Diameter (in.) – 1
Shaft Length (in.) – 3 5/32
Shaft Keyway (in.) – 1/4in. square
Shaft End Tapped (Diameter (in.)/Threads per inch) – 7/16–20
Shaft Rotation (From PTO Shaft Side) – CCW
Bearing Type – DU
Start Type – Rewind
Charging System Amps – 9 Amp DC
Auto Compression Release – Yes
Dimensions L x W x H (in.) – 23 1/2 x 21 x 22
John Deere X166R Transmission
Transmission Type – Hydrostatic
Transaxle Model – Kanzaki Tuff Torq K46 CY
Gears – Infinite choice of speeds
Drive Control – Hydro/automatic foot-control pedals
Accelerator – Automotive-type
Reduction Ratio – 21.53:1
Rated Axle Torque, Nm (ft. lbs.) – 177.7 (131)
Maximum Tire Diameter, mm (inch) – 457 (18)
Brake Capacity, Nm (ft. lbs.) @350 N (79 lbs) – 253 (187)
Pump/Motor Displacement, cc/rev – 7/10
Maximum Input Speed, rpm – 3,400
Axle Shaft Size, mm (inch) – 19.05 (0.75)
Maximum Static Weight on Axle, kg (lbs.) – 306 (675)
Weight (dry), kg (lbs.) – 12.5 (27.6)
Brake Type – Wet Disc, internal
Gears – Heat Treated Powder Metal
Differential – Automotive Type Bevel Gears
Speed Control System – Hand Control External Friction Pack and Lever
Available
Bypass Valve (Roll Release) – Std
Travel Forward Speed – 0-8.4 km/h (0-5.2 mph)
Travel Reverse Speed – 0-4.8 km/h (0-3 mph)
John Deere X166R Mechanical System
Chassis – 4×2 2WD
Power Take-off – Mid
PTO Type – Independent
Clutch – Electric
Steering – Manual
JD X166R Electrical System
Charging System – Regulated Circuit
Charging System Capacity – 9 Amp
Electrical System – 12 Volts
Battery Type – BCI Group U1
Tire Sizes
Front Tires – 15 x 6.00 – 6
Rear Tires – 18 x 8.5 – 8
Tire Pressure (Front) – 97 kPa (14 psi)
Tire Pressure (Rear) – 69 kPa (10 psi)
John Deere X166R Mower
Model – 42 inch Mower
Blades Rotary – 2
Mower Wheels – 4
Deck-leveling system – Quick-adjust
V-belt Drive – Std.
Drive Sheave Nut Torque (w/ M12 Nut) – 75 Nm (55 lb.-ft.)
Blade Nut Torque (w/ 5/8 in. Nut) – 88 Nm (65 lb.-ft.)
Cutting Height (Approximately) – 25-102 mm (1-4 in.)
Cutting Width – 1067 mm (42 in.)
Rotation Speed of Cutting Device with 42-Mower – 3180 r/min at 3150
r/min engine speed
Sound Measurements without Mower Deck – 82.9 ± 1 dB(A) at 3250 r/min
engine speed
Sound Measurements with Mower Deck – 88.9 ± 1 dB(A) at 3250 r/min engine
speed
Dimensions
Overall Height – 1137 mm (44.75 in.)
Overall Length – 2527 mm (99.5 in.)
Overall Width – 960 mm (37.8 in.)
Weight – 252 kg (555 lb)