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John Deere 445 Engine

John Deere 445 Engine Specifications

Engine Model ............. Kawasaki FD620D
Engine Type ............. Gasoline, 4-stroke, V-Twin OHV
Number of Cylinders ............. 2
Displacement, L (cu in) ............. 0.617 (37.7)
Engine Bore, mm (in) ............. 76.0 (2.99)
Engine Stroke, mm (in) ............. 68.0 (2.68)
Maximum Horse Power, hp (kW) ............. 18.7 (14.0)
Rated Engine Speed, rpm ............. 3600
Maximum Torque, Nm (ft-lbs) ............. 44.6 (32.9)
Torque Speed, rpm ............. 2200
Fast Idle Speed, rpm ............. 3550
Slow Idle Speed, rpm ............. 1450
Compression Ratio ............. 9.0:1
Carburetor Type ............. Twin barrel
Fuel Pump ............. Electric
Fuel Filter ............. Replaceable paper element
Governor ............. All speed mechanical
Air Cleaner ............. Dual stage element
Lubrication System ............. Pressurised
Oil Filter ............. Cartridge type full flow
Cooling System ............. Pressurized forced circulation type
Ignition System ............. Transistorized ignition
Starting System ............. Electric starter
Starter ............. Electric, shift type
Charging System ............. 12 V 20/30A with regulator

John Deere 445 Engine Maintenance Data

Valve Adjustment

Valve Clearance (Intake, Exhaust) ............. 0.25 mm (0.01 in)
Valve Seating Surface Angle (Intake, Exhaust) ............. 45 deg
Valve Seating Surface Width (Intake, Exhaust) ............. 0.5-1.1 mm (0.02-0.043 in)
Valve Guide I.D (Intake, Exhaust) ............. 6.00-6.012 mm (0.2362-0.2367 in)

Engine Oil and Filter

Engine Oil Type ............. SAE 10W-30/10W-40, SAE 5W-20
Oil Classification ............. SF, SG, SH or SJ
Oil Capacity (w/o Filter), L (qts) ............. 1.8 (1.9)
Oil Capacity (with New Filter), L (qts) ............. 2.0 (2.2)
Oil Filter Part Number ............. AM107423
Air Filter Part Number ............. MIU11376

Carburetor Adjustment

Model ............. Teikei/FD22K-1A
Throttle bore diameter ............. 26 mm (1.02 in)
Venturi diameter ............. 22 mm (0.87 in.)
Main Jet ............. #112
Pilot jet ............. #58
Main air jet ............. 1.8 mm
Pilot air jet ............. 0.9 mm
Pilot air screw turns out ............. 1-3/4
Low idle speed, rpm ............. 1450-1650
Fast idle speed, rpm ............. 3600

Fuel Pump Specifications

Fuel Pump Type ............. Electro-magnetic Pump (in-line type)
Rated voltage ............. 12 VDC
Delivery (min) ............. 400 ml (0.4 qt) / (min) at free flow
Shut-off delivery pressure ............. 19.6 to 26.5 kPa (2.8 to 3.8 psi)

Ignition System

Plug Type ............. NGK BMR4A
Plug Gap, mm (in) ............. 0.6-0.7 (0.0237-0.0277)
Ignition Coil Air Gap, mm (in) ............. 0.3-1.2 (0.0119-0.0474)
Spark Plug Torque, Nm (ft-lbs) ............. 25 (18.6)

John Deere 445 Engine Service Data

Cylinder Block

Cylinder inside diameter (Standard) ............. 76.067 mm (2.9948 in)
Cylinder inside diameter (0.25 mm Oversize) ............. 76.317 mm (3.0046 in)
Cylinder inside diameter (0.50 mm Oversize) ............. 76.567 mm (3.0144 in)
Cylinder inside diameter (0.75 mm Oversize) ............. 76.817 mm (3.0242 in)
Cylinder bore out of round ............. 0.056 mm (0.0022 in)
Cylinder Bore Diameter (Standard) ............. 76.000-75.980 mm (2.9921-2.9913 in)
Cylinder Bore Diameter (0.25 mm Over size) ............. 76.250-76.230 mm (3.0020-3.0012 in)
Cylinder Bore Diameter (0.50 mm Over size) ............. 76.500-76.480 mm (3.0118-3.0110 in)
Cylinder Bore Diameter (0.75 mm Over size) ............. 76.750-76.730 mm (3.0216-3.0209 in)
Connecting rod small end inside diameter ............. 17.051 mm (0.6713 in)

Cylinder Head and Valves

Cylinder compression (min) ............. 1171 kpa (170 psi)
Cylinder head warp ............. 0.06 mm (0.002 in.)
Valve seating surface width (Intake, Exhaust) ............. 2.0 mm (0.08 in)
Valve head thickness (Intake, Exhaust) ............. 0.6 mmm (0.024 in)
Valve stem run out (Intake, Exhaust) ............. 0.05mm (0.002 in)
Intake valve stem diameter ............. 5.945 mm (0.2341 in)
Exhaust valve stem diameter ............. 5.925 mm (0.2332 in)
Intake valve guide inside diameter ............. 6.045 mm (0.2379 in)
Exhaust valve guide inside diameter ............. 6.055 mm (0.2384 in)
Valve spring free length (Intake, Exhaust) ............. 29.70 mm (1.17 in)
Rocker arm push rod runout (Intake, Exhaust) ............. 0.80 mm (0.03 in)
Rocker shaft outside diameter (Intake, Exhaust) ............. 11.949 mm (0.4704 in)
Rocker arm bearing inside diameter (Intake, Exhaust) ............. 12.074 mm (0.4754 in)

Piston and Piston Rings

Top ring groove clearance ............. 0.15 mm (0.006 in)
Second ring groove clearance ............. 0.12 mm (0.005 in)
Piston ring thickness (Top, Second) ............. 1.12 mm (0.044 in)
Top and Second ring end gap ............. 1.2 mm (0.05 in)
Oil ring end gap ............. 1.5 mm (0.06 in)
Piston pin outside diameter ............. 16.975 mm (0.6683 in)
Piston pin hole inside diameter ............. 17.041 mm (0.6709 in)

Camshaft and Tappet

Cam lobe height (Intake) ............. 25.21 mm (0.993 in)
Cam lobe height (Exhaust) ............. 25.46 mm (1.002 in)
Camshaft journal diameter (PTO side) ............. 15.907 mm (0.6263 in)
Camshaft journal diameter (Flywheel side) ............. 15.917 mm (0.6267 in)
Camshaft bearing inside diameter (Crankcase) ............. 16.068 mm (0.6326 in)
Camshaft bearing inside diameter (Crankcase cover) ............. 16.068 mm (0.6326 in)

Crankshaft and Connecting Rod

Connecting rod bend ............. 0.15-100 mm (0.006-3.94 in)
Connecting rod twist ............. 0.15-100 mm (0.006-3.94 in)
Connecting rod big end width ............. 21.20 mm (0.83 in)
Crankpin width ............. 44.5 mm (1.75 in)
Connecting rod big end inside diameter ............. 34.055 mm (1.3407 in)
Crankpin outside diameter ............. 33.927 mm (1.3357 in)
Crankshaft runout ............. 0.05 mm (0.002) TIR
Crankshaft journal diameter (PTO side) ............. 33.909 mm (1.3350 in)
Crankshaft journal diameter (Flywheel side) ............. 33.909 mm (1.3350 in)

Crankcase

PTO shaft bearing inside diameter (Crankcase cover) ............. 34.066 mm (1.3412 in)
Water pump shaft bearing inside diameter ............. 10.088 mm (0.3972 in)
Crankshaft journal bearing Inside diameter (Crankcase) ............. 34.114 mm (1.3431 in)

John Deere 445 Engine Tightening Torque Specs

Cylinder Head, Nm (ft-lbs) ............. 21 (15.5)
Connecting Rod, Nm (ft-lbs) ............. 21 (15.5)
Flywheel, Nm (ft-lbs) ............. 110 (80.5)
Crankcase Cover, Nm (ft-lbs) ............. 21 (15.5)
Intake Manifold, Nm (ft-lbs) ............. 7.8 (5.9)
Oil Drain Plug, Nm (ft-lbs) ............. 23 (16.5)
Spark Plug, Nm (ft-lbs) ............. 25 (18.6)
Valve Clearance Lock Nut, Nm (ft-lbs) ............. 8.8 (6.5)

JOHN DEERE TRACTORS ATTACHMENTS
420	430	455	790	990
X300	X320	X330	X350	X475
X485	X500	X540	X570	X590
X700	X720	X738	X758	1023E
2025R	2210	2520	3025E	3032E
3038E	3038R	3039R	3046R	3203
3320	3520	4052R	4066R	4100
4105	4115	4200	4310	4320
4400	4410	4520	4600	4720

JD TRACTORS TROUBLESHOOTING
2640	3040	3310	3650	4100
5050D	5090R	5410	6105R	7200R
E130	L111	LA110	LT155	X300R