Specifications, Service and Repair of Farm and Lawn Tractors

________________________________________________________________________________

John Deere STX38 Specs

Engine Specifications

Engine model - Kohler Command LT CV13S
Type - Gasoline, Air Cooled, Single Cylinder, 4-Cycle, Overhead Valves
Crankcase Oil Capacity (with filter) - 1.8 L (1.9 U.S. qt)
Oil Type - 10W30 / 5W30
Power (3600 RPM, corrected to SAE J1995) - 9.75 kW (13 HP)
Max Torque (RPM indicated) - 27.8 Nm (20.5 ft. lb.) /2500
Bore - 87 mm (3.43 in.)
Stroke - 67 mm (2.64 in.)
Displacement - 398 cc (24.3 cu. in.3)
Compression Ratio - 8.5:1
Weight (approx.) - 39.54 kg (87 lb.)
Oil Capacity (approx.) - 1.9 L (2.0 U.S. qt.)
Carburetor - Walbro
Carburetor Type - Side Draft
Throttle/Choke - Unitized Control Linkage
Carburetor Fuel Shut-Off Solenoid (Optional) - Electric
Fuel Delivery - Gravity Flow
Fuel Filter - Replaceable Paper (in-line type)
Fuel Type - Unleaded (87 octane minimum)
Fuel Tank Capacity - 4.7 L (1.25 gal)
Air Filter - Paper Element with Foam Pre-cleaner
Muffler Type - Anti-Backfire
Valve Adjustment - None (hydraulic lifters)
Oil Pressure (Minimum at 1250 rpm) - 124 kPa (18 psi)
Crankcase Vacuum (Minimum At Operating Temp.) - 25 mm (1 in.) Water Movement
Automatic Compression Release Minimum Lift (Engine Cold) - 0.25 mm (0.01 in.)
Carburetor Slow Idle Mixture Screw Initial Setting - Lightly Seat, Then 1 Turn Out
Slow Idle Speed - 1650 ±75 rpm
Fast Idle Speed - 3350 ±50 rpm

John Deere STX38 Electrical System

Charging System - Flywheel/Electronic Magneto
Magneto Air Gap - 0.2-0.3 mm (0.008-0.012 in.)
Charging Capacity - 15 amp (regulated)
Spark Plug - Champion RC12YC
Spark Plug Air Gap - 1.0 mm (0.040 in.)
Battery Type - BCI Group, U1
Battery Reserve Capacity - 23 min. at 25 amp
Battery Cold Cranking Amp - 25 amp at 27C (0F) for 20 minutes
Battery Specific Gravity - Above 1.225 Points
Starter Type - Bendix Inertia Drive
PTO Clutch Type - Electric (Manufactured by Warner)
Fuel Shut-Off Solenoid (Optional) - Replaceable (Below Carburetor Float Bowl)
Headlight Kit (Optional) - Two Bulbs-Each 12 Volt/23W/1.9 Amp Draw

John Deere STX38 Transaxle

Gear Transaxle - Dana
Transaxle Model - Spicer Heavy-Duty 4360 Transaxle
Type - Five-Speed/Linear Shift
Brake Type - Single, External Brake Disc With Dual Friction Pucks
Hydro Transaxle - Kanzaki
Hydro Transaxle Model - Tuff Torq K50 Transaxle
Type - Hydrostatic
Forward Speed - 0-9.3 km/hr (0-5.8 mph)
Reverse Speed - 0-4.7 km/hr (0-2.9 mph)
Brake Type - Single, External Disc Brake With Friction Pucks
Lubrication - John Deere Plus-4 10W30 Engine Oil, Class CD
Reservoir - Internal
Capacity - 1.6 L (3.4 pt)

JD STX38 Traction Drive Belt

Type - Hydro
Actual effective length - 2485±8 mm (97.8±0.3 in.)
Theoretical effective length (short) - 2477 mm (97.5 in.)
Theoretical effective length (long) - 2530 mm (99.6 in.)

Chassis

Wheelbase - 1135 mm (44.69 in.)
Overall Length - 1524 mm (60 in.)
Overall Width (w/o mower deck) - 908 mm (35.75 in.)
Height - 980 mm (38.6 in.)
Average Overall Weight (with mower deck/no fuel) - 195.05 kg (430 lbs)
Horizontal Pull Maximum - 250 N (56 lbs)
Tongue Weight Maximum - 65 N (15 lbs)
Trailer Load Maximum - 136 kg (300 lbs)
Trailer Tongue Weight Maximum - 23 kg (50 lbs)

JD STX38 Steering

Steering Type - Manual-Pinion/Sector
Axle Pivot Hub - Shim Adjustable
Lubrication - DuBois MPG-2 Multipurpose Grease
Lubrication Interval - 10 hrs (maximum)
Toe-In - 6 mm (0.24 in.)-Non-Adjustable
Turning Radius - 584 mm (23 in.)

Wheels and Tires

Front Wheels - 6.0 x 4.50
Rear Wheels - 8.0 x 6.18
Front Tires - 13x6.50-6 NHS (2 ply)
Rear Tires - 18x8.50-8 NHS (2 ply)
Rear Tires - 18x9.50-8 NHS (2 ply)
Front Tires Pressure - 83 kPa (12 psi)
Rear Tires Pressure (with mower deck) - 55 kPa (8 psi)

________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

JOHN DEERE LAWN TRACTORS SPECIFICATIONS

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

ENGINES FOR JOHN DEERE LAWN TRACTORS

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

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

________________________________________________________________________________________

JOHN DEERE FRONT END LOADERS

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

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

________________________________________________________________________________________

JOHN DEERE FARM TRACTORS SPECIFICATIONS

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________