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John Deere STX30 Specs

Engine Specifications

Engine model - Kohler Command LT CV12.5
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 - (Warm Climate) - 10W30 (Warm Climate) / 5W30 (Cold Climate)
Power (3600 RPM, corrected to SAE J1995) - 9.33 kW (12.5 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
Compression Release - Automatic/Centrifugal
Crankshaft Type - Vertical (counterbalanced)
Weight (approx.) - 39.54 kg (87 lb.)
Oil Capacity (approx.) - 1.9 L (2.0 U.S. qt.)
Lubrication - Gerotor Pump (0—60 psi)
Oil Filter - Full Flow (W/O By-Pass Valve)
Oil - John Deere Turf-Gard
Lubrication Interval - 50 Hours First Change, Every 100 Hours After or Yearly
Air Cleaner Base Nut Torque - 9.9 Nm (88 in.lb.)
Air Cleaner Wing Nut Torque - 1.5 Nm (12 in.lb.)
Angle of Operation - Maximum (at full oil level) Intermittent / Continuous - 35 / 20 degrees
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)
Fuel Shut-Off Valve - Replaceable (In-Line Type)
Fuel Shut-Off Solenoid (Optional) - Replaceable (Below Carburetor Float Bowl)
Air Filter - Paper Element with Foam Pre-cleaner
Muffler Type - Anti-Backfire
Gasoline/Alcohol Blends - Up To 10% Ethyl Alcohol-90% Unleaded (By Volume)
Gasoline/Ether Blends - Up To 15% MTBE-85% Unleaded (By Volume)

John Deere STX30 Electrical

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

JD STX30 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

Traction Drive Belt

Type - Gear
Actual effective length - 2660±8 mm (104.7±0.3 in.)
Theoretical effective length (short) - 2631 mm (103.6 in.)
Theoretical effective length (long) - 2710 mm (106.7 in.)

John Deere STX30 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.)
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)

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.)

JD STX30 Wheels and Tires

Front Wheels - 6.0x4.50
Rear Wheels - 8.0x6.18
Front Tires - 13x5-6 NHS (2 ply)
Rear Tires - 18x6.50-8 NHS (2 ply)
Front Tires Pressure (with mower deck) - 83 kPa (12 psi)
Rear Tires Pressure (with mower deck) - 97 kPa (14 psi)

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