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John Deere X140 Troubleshooting
The
John Deere X140 is a two-wheel drive lawn tractor from X100 series. This model
was manufactured from 2007 to 2010. The driveline consists of 40.1 cu.in (655
cc) Briggs and Stratton 407577 4-cycle V-twin cylinder OHV vertical shaft
air-cooled gasoline engine with a rated power of 17.8 Hp (13.3 kW), and Tuff
Torq HD K46 hydrostatic transmission with infinite forward and reverse gears.
The John Deere X140 automatic is equipped with a manual steering system,
electric PTO clutch, disc brakes, 16x6.50-8 front tires, and 22x9.50-12
rear tires. The operating weight is 524 lbs (238 kg). The John Deere
X140 tractor is compatible with a 48" mid-mount 3-blade mower deck with
a cutting height of 1.0-4.0" (25-102 mm) and mechanical lift system.
| Engine Troubleshooting |
| Engine difficult to start or doesn't start |
| Empty gas tank - Add fuel |
| Improper fuel grade - Use correct fuel grade |
| Fuel system clogged - Repair or replace |
| Faulty spark plug wire connection - Check the spark plug wire connection, repair or replace |
| Damaged spark plug - Replace spark plug |
| Fuel filter is clogged - Fuel filter needs to be replaced |
| Brake pedal not pushed down - Push the brake pedal down |
| Carburetor is dirty - Wash, clean and adjust |
| Poor compression - Inspect and replace wear parts |
| Throttle cable is damaged or adjusted incorrectly - Adjust properly or replace the cable |
| Cooling fins are plugged - Wash or clean as required |
| Ignition system problems - Check ignition and replace faulty components |
| Choke cable is defective or stuck - Service or replace the cable |
| Plugged air filter - Service or change air filter |
| Clogged or damaged fuel pump - Check fuel pump and change if required |
| Spark plug is defective - Change spark plug as required |
| Clogged or faulty carburetor - Clean or replace carburetor |
| Faulty ignition coil - Ignition coil must be replaced |
| Valve springs are damaged or weak - Change valve springs |
| Stuck valves - Valves must be cleaned |
| Engine oil level is insufficient - Check oil level and add oil as required |
| Engine is under excessive load - Reduce load |
| Air intake grill is clogged - Need to wash or clean |
| Carburetor fuel mixture is too lean - Make the correct settings |
| Bad ignition timing - Ignition timing needs to be adjusted correctly |
| Valve setting is wrong - Adjust valves correctly |
| Low octane gasoline - Use proper fuel |
| Engine is overloaded - Load reducing required |
| Insufficient engine oil - Need to add engine oil |
| Too low idle RPM - Correct the settings |
| Fuel pump is faulty or clogged - Service or change fuel pump |
| Main bearings or crankshaft failure - Have bearings or crankshaft replaced |
| Valve clearance is not correct - Check and adjust |
| Damaged cylinder bore or piston rings - Replace defective parts |
| Carburetor is clogged or improperly adjusted - Clean or correctly adjust carburetor |
| Plugged air filter - Change or clean air filter |
| Dirty or defective fuel pump - Service or change fuel pump |
| Ignition system failure - Test ignition and replace failed parts |
| Cylinder head gasket is damaged - Change cylinder head gasket |
| Burned or stuck valves - Replace or clean valves |
| Worn or damaged push rod - Install a new push rod |
| Cylinder block parts are worn out - Replace defective parts as required |
| Excessive fuel consumption |
| Choke opening is not full - Replace or adjust choke cable |
| Incorrect carburetor main jet adjustment - Adjust it correctly |
| Spark plug is loose or faulty - Spark plug need to be tightened or replaced |
| Valves are stuck, worn, or burned - Clean or replace valves |
| Sleeve, piston, or rings are damaged - Replace defective parts as required |
| Valve clearance is improper - Adjust valve clearance |
| High engine oil consumption |
| Seals or gaskets are defective - New components need to be installed |
| Valve stems and guides are worn - Change the valves |
| Seized or wear piston rings - Install new piston rings |
| Cylinder liner or piston is damaged - Check piston and liner, install new parts as required |
| Breather hose or pipe is clogged - Change or clean |
| Hydrostatic Transmission Troubleshooting |
| HST transmission makes excessive noise |
| Speed control pedal linkage is damaged or out of adjustment - Adjust or change linkage |
| Excessive loading - Reduce transmission load |
| Low transmission oil level or contaminated oil - Add oil to the correct level or fill the transmission with fresh oil |
| Damaged or worn components of hydrostatic transmission - Change or repair defective parts |
| Shift linkage is loose or broken - Service or change the linkage |
| Defective or stuck hydrostatic pump - Change or repair pump |
| Worn or misadjusted transmission shift control parts - Adjust properly or change |
| Lack of transmission fluid - Add fluid to the transmission housing |
| Worn or damaged drive sheave - Install a new sheave |
| Shifter linkage is not adjusted or faulty - Replace or adjust linkage |
| Worn or unadjusted speed control linkage - Adjust or replace linkage |
| Transmission seals or gaskets are broken - Replace gaskets or seals |
| Final drive shaft leakage - Change shaft seals |
| Cracked transmission case - Change broken case |
| Mower Deck Troubleshooting |
| Mower vibration is excessive |
| Worn or dirty mower drive pulley - Clean or change pulley |
| Damaged or loose drive belt - Adjust belt tension or change the belt |
| Mower blades are bent or out of balance - Balance blades or replace it |
| Blade mounting bolts are loose - Tighten it fast |
| Discharge chute is regularly plugged |
| Fast ground speed - Use a slower speed |
| Grass is too high - Use a lower cutting height |
| Engine runs at low revs - Open throttle fully |
| Low cutting height - Use a higher cutting height |
| Drive belt installation is not correct - Reinstall drive belt properly |
| Mower leaving random uncut of grass |
| Discharge area is clogged - Clean out the mower deck |
| Excessive blade dullness - Need a blade sharpening |
| Worn or damaged blades - Replace the blades |
| High ground speed - Select a slower speed |
| Mower cuts too low - Adjust mower to higher cutting height |
| Bagger is full - Empty the bagger |
| Blades are scalping the grass |
| Lawn is not level or bumpy - Roll or level the lawn |
| Cutting level is too low - Adjust mower to higher cutting height |
| High mowing speed - Select a lower speed |
| Incorrectly leveled mower deck - Adjust mower deck level properly |
| Worn or bent blades - Replace the blades |
| Tire pressure is too low - Need to inflate tires |
| Incorrect tire pressure - Correct tire pressure |
| Incorrectly leveled mower deck - Adjust the level of mower deck correctly |
| Blades are too dull - Sharpen the blades |
| Bent or worn blades - Replace the blades |
| Deck clogged with grass clippings - Check cutting deck and clean as necessary |
| Deck shell is damaged - Repair or replace the deck |
| Mower spindle is faulty or loose - Repair or replace the spindle |
| Electrical Troubleshooting |
| Battery will not charge |
| Loose or corroded wire connections - Service or tighten cable connections |
| Faulty battery terminal clamps - Terminal clamps need to be replaced |
| Dead cell in battery - Install a new battery |
| Low battery output - Battery needs to be recharged |
| Battery discharges quickly - Service or replace the battery |
| Battery cables are disconnected or terminals are faulty - Check cable connections and replace or service terminals |
| Battery is low or faulty - Need to charge or replace the battery |
| Battery cables are disconnected or improperly connected - Inspect cables and connect properly |
| Low battery power - Recharge the battery |
| Improperly gapped or dirty spark plug - Clean and gap or replace |
| Faulty solenoid or starter motor - Repair starter or change solenoid |
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| Lawn and Garden Tractors Technical Specs |
