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John Deere X380 Engine

John Deere X380 Engine Specifications

Engine Model ............. Kawasaki FS651V
Engine Type ............. Air-cooled, 4-stroke, V-twin, Vertical shaft, OHV gasoline
Number of Cylinders ............. 2
Cylinder Liners ............. Cast iron
Displacement, L (cu in) ............. 0.726 (36.8)
Engine Bore, mm (in) ............. 78.0 (3.07)
Engine Stroke, mm (in) ............. 76.0 (2.99)
Maximum Horse Power, hp (kW) ............. 18.8 (14.1)
Rated Engine Speed, rpm ............. 3600
Maximum Torque, Nm (ft-lbs) ............. 53.2 (39.2)
Torque Speed, rpm ............. 1800
Fast Idle Speed, rpm ............. 3550
Slow Idle Speed, rpm ............. 1550
Compression Ratio ............. 8.2:1
Lubrication System ............. Pressure feed by positive displacement pump
Oil Filter ............. Cartridge type full flow
Ignition System ............. Transistorized-flywheel magneto
Spark Plug ............. NGK BPR4ES
Starting System ............. Electric starter
Electric Starter Rating ............. 12V-15 amps with regulator

Fuel System

Fuel System ............. Carburetor
Carburetor ............. Float type, fixed main jet, internally vented, single barrel
Fuel Pump ............. Diaphragm type pulse pump
Fuel ............. Unleaded gasoline (octane number 86 or higher)
Governor ............. Flyweight all speed governor
Air Cleaner ............. Dual stage element, dry type

John Deere X380 Engine Maintenance Data

Valve Adjustment

Intake Valve Clearance (Cold), mm (in) ............. 0.10-0.15 (0.0040-0.0059)
Exhaust Valve Clearance (Cold), mm (in) ............. 0.10-0.15 (0.0040-0.0059)
Intake Valve Seating Surface Width, mm (in) ............. 1.2-1.8 (0.047-0.071)
Exhaust Valve Seating Surface Width, mm (in) ............. 0.8-1.6 (0.031-0.063)
Valve Guide I.D (Intake, Exhaust), mm (in) ............. 6.00-6.012 (0.2362-0.2367)

Engine Oil and Filters

Engine Oil Type ............. SAE 10W-30/10W-40, SAE 5W-20
Oil Classification ............. SF, SG, SH, SJ or SL
Oil Capacity (w/o Filter), L (qts) ............. 1.8 (1.9)
Oil Capacity (with New Filter), L (qts) ............. 2.1 (2.2)
Oil Filter Part Number ............. AM125424
Air Filter Part Number ............. MIU12554

Carburetor Specs and Adjustment

Carburetor Model ............. Walbro/LMF-23
Throttle Bore Diameter, mm (in) ............. 30.0 (1.18)
Venturi Diameter, mm (in) ............. 22.0 (0.87)
Main Jet ............. #124
Pilot Jet ............. #56
Pilot Air Screw Turns Out ............. 1-1/4±1/2
Float Level ............. Float parallel to carburetor body
Low Idle Speed (Carburetor), rpm ............. 1450
Low Idle Speed (Governor), rpm ............. 1550
High Idle Speed, rpm ............. 3600
Carburetor and Inlet Pipe Mounting Nut Torque, Nm (ft-lb) ............. 5.9 (4.4)
Inlet Manifold Bolts Torque, Nm (ft-lb) ............. 5.9 (4.4)
Main Jet Torque, Nm (ft-lb) ............. 2.3 (1.7)
Governor Arm Clamp Nut Torque, Nm (ft-lb) ............. 7.8 (5.8)
Governor Shaft Plate Screws Torque, Nm (ft-lb) ............. 2.0 (1.5)

Ignition System

Plug Type ............. NGK BPR4ES
Plug Gap, mm (in) ............. 0.70-0.80 (0.0277-0.0316)
Ignition Coil Air Gap, mm (in) ............. 0.20-0.40 (0.0079-0.0158)
Spark Plug Torque ............. 22 Nm (16 ft-lb)

John Deere X380 Engine Repair Specifications

Cylinder Head and Valves

Cylinder head warp, mm (in) ............. 0.05 (0.002)
Valve clearance (Intake, Exhaust), mm (in) ............. 0.10-0.15 (0.0040-0.0059)
Valve seating surface angle (Intake, Exhaust), deg ............. 45
Valve seating surface width (Intake), mm (in) ............. 1.2-1.8 (0.047-0.071)
Valve seating surface width (Exhaust), mm (in) ............. 0.8-1.6 (0.031-0.063)
Valve guide inside diameter (Intake, Exhaust), mm (in) ............. 6.00-6.012 (0.2362-0.2367)
Valve head thickness (Intake, Exhaust), mm (in) ............. 0.30 (0.012)
Valve stem runout (Intake, Exhaust), mm (in) ............. 0.05 (0.002)
Valve stem diameter (Intake), mm (in) ............. 5.95 (0.0234)
Valve stem diameter (Exhaust), mm (in) ............. 5.93 (0.0233)
Valve guide inside diameter (Intake, Exhaust), mm (in) ............. 6.08 (0.239)
Valve spring free length (Intake, Exhaust), mm (in) ............. 31.0 (1.22)
Rocker arm push rod run out (Intake, Exhaust), mm (in) ............. 0.5 (0.02)

Cylinder and Pistons

Cylinder inside diameter (Standard), mm (in) ............. 78.08 (3.074)
Cylinder bore out round, mm (in) ............. 0.05 (0.002)
Piston diameter, mm (in) ............. 77.79 (3.063)
Piston top ring/groove clearance, mm (in) ............. 0.19 (0.0075)
Piston second ring/groove clearance, mm (in) ............. 0.20 (0.0079)
Piston ring thickness, mm (in) ............. 1.1 (0.043)
Piston top ring end gap, mm (in) ............. 0.6 (0.024)
Piston second ring end gap, mm (in) ............. 0.9 (0.035)
Piston oil ring end gap, mm (in) ............. 1.1 (0.043)
Piston pin outside diameter, mm (in) ............. 16.96 (0.668)
Piston pin hole inside diameter, mm (in) ............. 17.08 (0.672)
Connecting rod small end inside diameter, mm (in) ............. 17.06 (0.672)
Cam lobe height, mm (in) ............. 29.36 (1.156)

Crankshaft and Connecting Rod

Connecting rod bend, mm (in) ............. 0.15/100 (0.006/3.94)
Connecting rod twist, mm (in) ............. 0.15/100 (0.006/3.94)
Connecting rod big end width, mm (in) ............. 22.05 (0.868)
Crankpin width, mm (in) ............. 40.0 (1.57)
Connecting rod big end inside diameter, mm (in) ............. 40.04 (1.58)
Crankpin outside diameter, mm (in) ............. 39.94 (1.57)
Crankshaft run out, mm (in) ............. 0.05 (0.002)
Crankshaft journal diameter (PTO side), mm (in) ............. 37.90 (1.492)
Crankshaft journal diameter (Flywheel side), mm (in) ............. 39.88 (1.570)
Crankshaft journal bearing inside diameter, mm (in) ............. 40.035 (1.576)

John Deere X380 Engine Tightening Torque Specs

Cylinder Head Bolts, Nm (ft-lb) ............. 46 (34)
Crankcase Cover Bolts, Nm (ft-lb) ............. 27 (20)
Flywheel Bolt, Nm (ft-lb) ............. 56 (41)
Valve Clearance Lock Screws, Nm (ft-lb) ............. 11 (8.2)
Connecting Rod Big End, Nm (ft-lb) ............. 9.8 (7.3)
Rocker Arm Bolts, Nm (ft-lb) ............. 14.7 (11)
Rocker Cover Mounting Bolts, Nm (ft-lb) ............. 5.9 (4.4)
Exhaust Pipe Flange Nuts, Nm (ft-lb) ............. 15 (11)
Spark Plugs, Nm (ft-lb) ............. 22 (16)
Governor Arm Clamp Nut, Nm (ft-lb) ............. 7.8 (5.8)
Intake Manifold Mounting Bolts, Nm (ft-lb) ............. 5.9 (4.4)

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