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John Deere LX188 Engine

John Deere LX188 Engine Specifications

Engine Model ............ Kawasaki FD501V
Engine Type ............ Gasoline, 4-cycle, OHV, V-twin 90 deg
Displacement ............ 437 cc (26.67 cu.in)
Number of Cylinders ............ 2
Bore and Stroke, mm (in) ............ 67x62 (2.44x2.64)
Maximum horsepower ............ 11.9 Kw (16.0 Hp)
Maximum torque ............ 32.6 Nm (24.1 ft-lbs)
Torque speed ............ 2800 rpm
Maximum speed ............ 3500 rpm
Idle speed ............ 1500 rpm
Carburetor ............ Float type with fixed main jet
Fuel Pump ............ Diaphragm type mechanical pump
Governor ............ Mechanical Type
Cooling system ............ Liquid-cooling
Ignition system ............ Transistorized ignition
Lubricating system ............ Pressure feed lubrication system
Starting system ............ Solenoid shift type electric starter
Charging system ............ 12V, 15A with regulator
Fuel Type ............ Unleaded gasoline with octane number 86 or higher
Fuel consumption ............ 245 g/HPh
Cooling system ............ Pressurized forced circulation type

John Deere LX188 Engine Maintenance Data

Carburetor Adjustment

Carburetor ............ Mikuni BV24-18
Main bore diameter ............ 24.0 mm (0.94 in)
Venturi diameter ............ 18.0 mm (0.70 in)
Main jet ............ #110
Pilot jet ............ #43.8
Main air jet ............ 1.7
Pilot air jet ............ 1.0
Pilot screw opening ............ 1-3/8 turns out
Low idle speed, rpm ............ 1550
Fast idle speed, rpm ............ 3550

Fuel Pump Specifications

Fuel Pump Type ............ Mechanical Diaphragm Type
Delivery (min) ............ 800 ml (0.8 qt)/at 1550 rpm
Shut-off delivery pressure ............ 2.45 kPa (0.36 psi)

Valve Adjustment

Intake Valve Clearance ............ 0.15 mm (0.006 in.)
Exhaust Valve Clearance ............ 0.15 mm (0.006 in.)
Valve Spring Free Length ............ 27.30 mm (1.074 in.)
Valve Stem O.D (Intake) ............ 4.93 mm (0.194 in.)
Valve Stem O.D (Exhaust) ............ 4.92 mm (0.193 in.)

Engine Oil and Filter

Engine Oil Type ............ SAE 10W-30/10W-40, SAE 5W-20/5W-30
Oil Classification ............ SC, SD, SE, SF, SG or SH
Oil Capacity, L (qts) ............ 1.7 (1.8)
Oil Filter Part Number ............ AM107423
Air Filter Part Number ............ MIU11377

Ignition System

Plug Type ............ NGK BPR4ES
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 ............ 17 Nm (12.5 ft-lb)

John Deere LX188 Engine Repair Specifications

Cylinder Block

Cylinder compression ............ 12.0 kg/cm2 (170 psi)
Cylinder Bore Standard I.D ............ 66.98-67.00 mm (2.637-2.638 in.)
Cylinder Bore Maximum I.D ............ 67.06 mm (2.640 in.)
Rebore Cylinder 0.50 mm Oversize Diameter ............ 67.46-67.48 mm (2.656-2.657 in.)
Crankshaft Side Journal O.D ............ 29.92 mm (1.178 in.)
Rocker Arm Shaft O.D ............ 11.95 mm (0.470 in.)
Rocker Arm Bearing I.D ............ 12.07 mm (0.475 in.)

Cylinder Head and Valves

Maximum Cylinder Head Flatness ............ 0.06 mm (0.002 in.)
Minimum Valve Spring Free Length ............ 27.30 mm (1.074 in.)
Maximum Valve Guide I.D ............ 5.06 mm (0.199 in.)
Maximum Valve Stem Bend ............ 0.03 mm (0.001 in.)
Standard Valve Seating Surface ............ 0.80 mm (0.031 in.)
Valve Seating Width Tolerance ............ 0.50-1.10 mm (0.020-0.034 in.)
Valve Seat and Face Angle 45 deg
Minimum Valve Margin ............ 0.50 mm (0.020 in.)
Valve Narrowing Angle 30 deg

Piston and Piston Rings

Piston Ring Groove Clearance ............ 0.10 mm (0.004 in.)
Piston Ring End Gap ............ 1.0 mm (0.040 in.)
Minimum Pin O.D ............ 15.98 mm (0.629 in.)
Maximum Pin Bore I.D ............ 16.04 mm (0.631 in.)
Piston O.D ............ 66.950-66.965 mm (2.6358-2.6364 in.)
Piston to Cylinder Bore Clearance ............ 0.015-0.150 mm (0.00059-0.0059 in.)

John Deere LX188 Engine Tightening Torque Specs

Cylinder head ............ 21 Nm (15.5 ft-lbs)
Connecting rod ............ 12 Nm (9 ft-lbs)
Flywheel ............ 88 Nm (65 ft-lbs)
Crankcase cover ............ 21 Nm (15.5 ft-lbs)
Intake manifold ............ 8 Nm (6 ft-lbs)
Oil drain plug ............ 25 Nm (18.5 ft-lbs)
Valve clearance lock nut ............ 8.8 Nm (6.5 ft-lbs)

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