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John Deere GT235 Engine

Kawasaki FH580V

Engine Specifications

Engine Model .......... Kawasaki FH580V
Engine Type .......... Vertical, 4-stroke, air cooled, V-twin gasoline engine
Number of Cylinder .......... 2
Cylinder Layout .......... 90 deg V-Twin
Piston Displacement, cc (cu.in) .......... 585 (35.7)
Engine Bore, mm (in) .......... 74.0 (2.91)
Engine Stroke, mm (in) .......... 68.0 (2.68)
Engine Power, Hp (kW) .......... 19.0 (14.2)
Rated Engine Speed, rpm .......... 3600
Maximum Torque, Nm (ft-lb) .......... 37.8 (27.9)
Torque Speed, rpm .......... 2400
Compression Ratio .......... 8.5:1
Carburetor Type .......... Float type with fixed main jet
Fuel Pump .......... Pulse Pump
Governor .......... Flyweight all speed governor
Air Cleaner .......... Dual stage element, dry type
Direction of Rotation .......... Counterclockwise facing the PTO Shaft
Lubricating System Type .......... Pressurized
Oil Filter .......... Dual element
Ignition System Type .......... Transistorized-fly wheel magneto
Spark Plug .......... Champion RCJ8Y
Electrical System Rating, Volts .......... 12
Charging Coil .......... 12V-15 amps with regulator
Starting System .......... Electric starter

John Deere GT235 Engine Maintenance Data

Valve Adjustment

Intake Valve Clearance .......... 0.10-0.15 mm (0.004-0.006 in.)
Exhaust Valve Clearance .......... 0.10-0.15 mm (0.004-0.006 in.)
Valve Spring Free Length .......... 31.0 mm (1.22 in.)
Intake Valve Seat Width .......... 0.6-0.9 mm (0.024-0.035 in.)
Exhaust Valve Seat Width .......... 0.6-0.9 mm (0.024-0.035 in.)

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) .......... 1.7 (1.8)
Oil Capacity (with New Filter), L (qts) .......... 1.8 (1.9)
Oil Filter Part Number .......... AM107423
Air Filter Part Number .......... M137556

Carburetor Specs and Adjustment

Carburetor Model .......... Nikki 621266
Throttle Bore Diameter, mm (in) .......... 26.0 (1.02)
Venturi Diameter, mm (in) .......... 18.0 (0.71)
Main Jet .......... #105
Pilot Jet .......... #50
Main Air Jet .......... #110
Pilot Air Jet .......... #140
Pilot Air Screw Turns Out .......... 1-7/8
Float Level .......... Float parallel to carburetor body
Low Idle Speed, rpm .......... 1550±100
High Idle Speed, rpm .......... 3600±100
Throttle Valve Screws Torque, Nm (ft-lbs) .......... 0.70 (0.52)
Main Jet Torque, Nm (ft-lbs) .......... 2.3 (1.7)
Float Chamber Mounting Screw Torque, Nm (ft-lbs) .......... 4.5 (3.3)
Governor Arm Clamp Nut Torque, Nm (ft-lbs) .......... 7.8 (5.8)

Ignition System

Plug Type .......... Champion RCJ8Y or NGK BPMR6A
Plug Gap, mm (in) .......... 0.75 (0.0296)
Ignition Coil Air Gap, mm (in) .......... 0.20-0.40 (0.0079-0.0158)
Spark Plug Torque, Nm (ft-lb) .......... 22 (16)

John Deere GT235 Engine Service Specifications

Cylinder Head and Valves

Cylinder head warp, mm (in) .......... 0.05 (0.002)
Valve clearance (Intake, Exhaust), mm (in) .......... 0.10-0.15 (0.004-0.006)
Valve seating surface angle (Intake, Exhaust), deg .......... 45
Valve seating surface width (Intake), mm (in) .......... 0.6-0.9 (0.024-0.035)
Valve seating surface width (Exhaust), mm (in) .......... 0.6-0.9 (0.024-0.035)
Valve guide inside diameter (Intake, Exhaust), mm (in) .......... 6.08 (0.239)
Valve head thickness (Intake, Exhaust), mm (in) .......... 0.35 (0.014)
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 compression, kPa (psi) .......... 390 (57)
Cylinder inside diameter (Standard), mm (in) .......... 74.10 (2.917)
Cylinder inside diameter (0.50 Oversize), mm (in) .......... 74.60 (2.937)
Cylinder bore out round, mm (in) .......... 0.056 (0.0022)
Piston diameter, mm (in) .......... 73.79 (2.905)
Piston top ring/groove clearance, mm (in) .......... 0.15 (0.006)
Piston second ring/groove clearance, mm (in) .......... 0.12 (0.005)
Piston ring thickness, mm (in) .......... 1.40 (0.055)
Piston top ring end gap, mm (in) .......... 0.70 (0.028)
Piston second ring end gap, mm (in) .......... 0.78 (0.031)
Piston oil ring end gap, mm (in) .......... 1.05 (0.041)
Piston pin outside diameter, mm (in) .......... 15.96 (0.628)
Piston pin hole inside diameter, mm (in) .......... 16.08 (0.633)
Connecting rod small end inside diameter, mm (in) .......... 16.05 (0.632)

Crankshaft and Connecting Rod

Connecting rod big end width, mm (in) .......... 18.80 (0.74)
Crankpin width, mm (in) .......... 39.50 (1.56)
Connecting rod big end inside diameter, mm (in) .......... 35.055 (1.3801)
Crankpin outside diameter, mm (in) .......... 34.94 (1.3810)
Crankshaft journal diameter, mm (in) .......... 34.93 (1.375)
Crankshaft journal bearing inside diameter, mm (in) .......... 35.15 (1.384)

Tightening Torque Specs

Cylinder Head Bolts, Nm (ft-lb) .......... 25 (19)
Crankcase Cover Bolts, Nm (ft-lb) .......... 25 (19)
Flywheel Bolt, Nm (ft-lb) .......... 56 (41)
Valve Clearance Lock Screws, Nm (ft-lb) .......... 6.9 (5.1)
Connecting Rod Big End, Nm (ft-lb) .......... 9.8 (7.3)
Rocker Arm Bolts, Nm (ft-lb) .......... 28 (20)
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)
Recoil Starter Retainer Screw, Nm (ft-lb) .......... 7.8 (5.8)

Briggs and Stratton 350777

Engine Specifications

Engine Model .......... Briggs and Stratton 350777
Engine Type .......... Gasoline, 2-cylinder air-cooled vertical-shaft
Stroke/Cycle .......... Four
Number of Cylinder .......... V-Twin
Piston Displacement, cc (cu.in) .......... 570 (34.8)
Engine Bore, mm (in) .......... 72.0 (2.83)
Engine Stroke, mm (in) .......... 70.0 (2.75)
Engine Power, Hp (kW) .......... 18.0 (13.4)
Fast Idle Speed, rpm .......... 3800
Low Idle Speed, rpm .......... 1750
Compression Ratio .......... 8.2:1
Type of Cooling .......... Air cooled
Oil Filter .......... Replaceable
Air Cleaner .......... Paper element with foam pre-cleaner
Fuel Filter .......... Replaceable, in-line
Lubricating System Type .......... Full Pressure
Ignition System .......... Electronic
Electrical System Rating, Volts .......... 12
Charging System .......... Flywheel alternator
Starter Type .......... Solenoid-shift
Battery Voltage .......... 12 volt
Battery CCA .......... 500 amp

John Deere GT235 Engine Maintenance Data

Valve Adjustment

Intake Valve Clearance .......... 0.10-0.15 mm (0.004-0.006 in.)
Exhaust Valve Clearance .......... 0.10-0.15 mm (0.004-0.006 in.)
Valve Spring Free Length .......... 31.0 mm (1.22 in.)
Valve Stem O.D (Intake) .......... 5.95 mm (0.0234 in.)
Valve Stem O.D (Exhaust) .......... 5.93 mm (0.0233 in.)

Engine Oil and Filter

Engine Oil Type .......... SAE 10W-30, 5W-30, 15W-50
Oil Classification .......... SF, SG, SH, SJ or higher
Oil Capacity (with filter), L (qts) .......... 1.65 (1.75)
Oil Capacity (without filter), L (qts) .......... 1.3 (1.4)
Oil Filter Part Number .......... AM125424
Air Filter Part Number .......... LG394018JD

Ignition System

Spark Plug .......... Champion RC12YC
Spark Plug Gap, mm (in) .......... 0.76 (0.030)
Armature Air Gap, mm (in) .......... 0.2-0.3 (0.008-0.012 in)
Spark Plug Torque, Nm (ft-lb) .......... 20 (14.8)

John Deere GT235 Engine Repair Specifications

Cylinder Block

Cylinder Bore (Std) .......... 72.0-72.03 mm (2.835-2.836 in)
Cylinder Bore (Max Wear) .......... 72.16 mm (2.839 in)
Cam Bearing (Std) .......... 16.0-16.03 mm (0.630-0.631 in)
Cam Bearing (Max Wear) .......... 16.08 mm (0.633 in)
Connecting Rod Crankpin Bearing (Std) .......... 37.06-37.08mm (1.459-1.460 in)
Connecting Rod Crankpin Bearing (Max Wear) .......... 37.12mm (1.4615 in)
Crankcase Cover Main Bearing (Std) .......... 35.04-35.05 mm (1.3795-1.380 in)
Crankcase Cover Main Bearing (Max Wear) .......... 35.07 mm (1.381 in)
Crankcase Cover Cam Bearing (Std) .......... 20.0-20.02 mm (0.7875-0.788 in)
Crankcase Cover Cam Bearing (Max Wear) .......... 20.04 mm (0.789 in)

Valves

Valve Guide Inside Diameter (Std) .......... 6.01-6.02 mm (0.2365-0.237 in)
Valve Guide Inside Diameter (Max) .......... 6.05 mm (0.238 in)
Intake Valve Stem Diameter (Std) .......... 5.95-5.96 mm (0.234-0.2346 in)
Intake Valve Stem Diameter (Min) .......... 5.92 mm (0.233 in)
Exhaust Valve Stem Diameter (Std) .......... 5.94-5.95 mm (0.2338-0.234 in)
Exhaust Valve Stem Diameter (Min) .......... 5.91 mm (0.2328 in)

Piston and Piston Ring

Piston Pin Bearing (Std) .......... 17.09-17.1 mm (0.6728-0.6735 in)
Piston Pin Bearing (Max Wear) .......... 17.12 mm (0.674 in)
Piston Pin Diameter (Std) .......... 17.07-17.08 mm (0.6722-0.6725 in)
Piston Pin Diameter (Min) .......... 17.06 mm (0.6718 in)
Piston Ring End Gap .......... 0.20-0.40 mm (0.008-0.016 in)
Top and Center Ring Side Clearance .......... 0.045-0.076 mm (0.0018-0.003 in)
Oil Ring Side Clearance .......... 0.11-0.15 mm (0.0045-0.006 in)

Crankshaft and Cam Shaft

Crankshaft Crankpin (Std) .......... 37.0-37.02 mm (1.4565-1.4575 in)
Crankshaft Crankpin (Min) .......... 36.95 mm (1.455 in)
Crankshaft Mag Journal (Std) .......... 29.98-30.0 mm (1.180-1.181 in)
Crankshaft Mag Journal (Min) .......... 29.94 mm (1.179 in)
Crankshaft PTO Journal (Std) .......... 34.96-34.97 mm (1.3765-1.377 in)
Crankshaft PTO Journal (Min) .......... 34.92 mm (1.375 in)
Crankcase Cover Main Bearing (Std) .......... 35.04-35.05 mm (1.3795-1.380 in)
Crankcase Cover Main Bearing (Max Wear) .......... 35.07 mm (1.381 in)
Crankcase Cover Cam Bearing (Std) .......... 20.0-20.02 mm (0.7875-0.788 in)
Crankcase Cover Cam Bearing (Max Wear) .......... 20.04 mm (0.789 in)
Cam Shaft Mag Journal (Std) .......... 15.95-15.97 mm (0.628-0.6287 in)
Cam Shaft Mag Journal (Min) .......... 15.93 mm (0.6273 in)
Cam Shaft PTO Journal (Std) .......... 19.94-19.96 mm (0.7855-0.786 in)
Cam Shaft PTO Journal (Min) .......... 19.92 mm (0.7845 in)

John Deere GT235 Engine Tightening Torque Specs

Cylinder Head .......... 19.0 Nm (14.1 ft-lbs)
Cylinder Shield .......... 7.0 Nm (5.2 ft-lbs)
Carburetor (to manifold) .......... 7.0 Nm (5.2 ft-lbs)
Connecting Rod .......... 13.0 Nm (9.6 ft-lbs)
Crankcase Cover .......... 17.0 Nm (12.5 ft-lbs)
Exhaust Manifold .......... 17.0 Nm (12.5 ft-lbs)
Fan Retainer .......... 17.0 Nm (12.5 ft-lbs)
Flywheel .......... 175.0 Nm (125 ft-lbs)
Rocker Arm Lock Nut .......... 7.0 Nm (5.2 ft-lbs)
Governor Lever Nut .......... 8.0 Nm (5.9 ft-lbs)
Intake Manifold .......... 16.0 Nm (12.3 ft-lbs)
Oil Pump .......... 7.0 Nm (5.2 ft-lbs)
Valve Cover .......... 3.0 Nm (2.2 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