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John Deere Z425 Zero Turn Mower Specs

John Deere Z425 Engine

Briggs 445577 Engine

Engine Model ................ Briggs and Stratton 445577
Engine Type ................ 4-cycle vertical-shaft V-twin air-cooled gasoline
Number of Cylinders ................ 2
Displacement, cu.in (cc) ................ 44.2 (724)
Engine Bore, in (mm) ................ 3.12 (79.3)
Engine Stroke, in (mm) ................ 2.89 (73.4)
Maximum Engine Power, hp (kW) ................ 23.0 (17.2)
Rated Engine Speed, rpm ................ 3600
Idle Speed, rpm ................ 1200-1400
Maximum Torque, Nm (ft-lbs) ................ 52.3 (38.7)
Torque Speed, rpm ................ 2400
Fuel System ................ Carburetor
Governor Type ................ Mechanical
Lubrication System ................ Full pressure with oil filter
Spark Plug ................ Champion QC12YC
Spark Plug Gap, in (mm) ................ 0.040 (1.02)
Armature Air Gap, in (mm) ................ 0.008-0.012 (0.20-0.30)
Intake Valve Clearance, in (mm) ................ 0.004-0.006 (0.10-0.15)
Exhaust Valve Clearance, in (mm) ................ 0.004-0.006 (0.10-0.15)
Fuel Tank Capacity, gal (L) ................ 3.5 (13.2)
Oil Capacity, qts (L) ................ 2.0 (1.9)

Briggs 44L777 Engine

Engine Model ................ Briggs and Stratton 44L777
Engine Type ................ 4-cycle vertical-shaft V-twin OHV air-cooled gasoline
Number of Cylinders ................ 2
Displacement, cu.in (cc) ................ 44.2 (724)
Engine Bore, in (mm) ................ 3.12 (79.0)
Engine Stroke, in (mm) ................ 2.89 (73.0)
Maximum Engine Power, hp (kW) ................ 23.0 (17.0)
Rated Engine Speed, rpm ................ 3300
Idle Speed, rpm ................ 1400-1600
Cylinder Bore Type ................ Cast iron
Fuel System ................ Carburetor
Fuel Pump ................ Integral type
Governor Type ................ Mechanical
Lubrication System ................ Full pressure with oil filter
Ignition System ................ Electronic Spark
Spark Plug ................ Champion RC12YC
Spark Plug Gap, in (mm) ................ 0.030 (0.76)
Armature Air Gap, in (mm) ................ 0.010-0.014 (0.25-0.36)
Air Cleaner ................ Multi-stage filter
Intake Valve Clearance, in (mm) ................ 0.003-0.005 (0.08-0.13)
Exhaust Valve Clearance, in (mm) ................ 0.005-0.007 (0.13-0.18)
Fuel Tank Capacity, gal (L) ................ 3.5 (13.2)
Oil Capacity, qts (L) ................ 2.0 (1.9)

Electrical System

Electrical System Rating, Volts ................ 12
Charging System ................ Alternator
Alternator Rating, Amps ................ 15
Starting System ................ Electric starter

Power Take Off

PTO Operational Type ................ Independent
PTO Clutch ................ Electric
PTO Drive Type ................ Belt-driven

John Deere Z425 Transmission

Transmission Model ................ Kanzaki DUP-10
Transmission Type ................ Hydrostatic
Number of Forward Gears ................ Infinite
Number of Reverse Gears ................ Infinite
Maximum Forward Speed, mph (kph) ................ 8.5 (13.7)
Maximum Reverse Speed, mph (kph) ................ 3.5 (5.6)

Transmission Model ................ Tuff Torq TZT 7D
Transmission Type ................ Hydrostatic
Number of Forward Gears ................ Infinite
Number of Reverse Gears ................ Infinite
Maximum Forward Speed, mph (kph) ................ 8.5 (13.7)
Maximum Reverse Speed, mph (kph) ................ 3.5 (5.6)

Wheels and Tires

Drive Wheels ................ 2WD 4x2
Steering Configuration ................ Front steer
Steering System ................ Power
Front Tire Size ................ 13x5.00-6
Rear Tire Size ................ 22x9.50-10

Dimensions and Weight

Wheelbase, in (mm) ................ 47 (1190)
Overall Length, in (mm) ................ 74.7 (1890)
Overall Heigth, in (mm) ................ 38.6 (980)
Weight (48" Deck), lb (kg) ................ 645 (293)
Weight (54" Deck), lb (kg) ................ 660 (299)

Mower Deck

Mower Deck Type ................ Mid-mount, right-discharge
Cutting Width, in (mm) ................ 48 (1215)
Cutting Height, in (mm) ................ 1.0-4.0 (25-102)
Number of Blades ................ 3
Blade Engagement ................ Electric
Lift System ................ Manual

Mower Deck Type ................ Mid-mount, right-discharge
Cutting Width, in (mm) ................ 54 (1370)
Cutting Height, in (mm) ................ 1.0-4.0 (25-102)
Number of Blades ................ 3
Blade Engagement ................ Electric
Lift System ................ Manual