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John Deere S240 Troubleshooting
The
John Deere S240 is a 2-wheel drive lawn tractor from S200 series. This model was
manufactured from 2015 to 2025. The John Deere S240 tractor can be powered by
the following engines: Kawasaki FS600V 4-cycle V-twin cylinder OHV air-cooled
gasoline engine with a rated power of 18.5 Hp (13.8 kW) or Kawasaki FR651V
4-cycle single cylinder OHV air-cooled gasoline engine with a rated power of
21.5 Hp (16 kW).
This model is fitted with a hydro transmission with infinite forward and
reverse gears. The John Deere S240 is equipped with a manual steering,
electric PTO clutch, wet disc brakes, 15x6.00-6 front tires, and
20x10.00-8 rear tires. The operating weight is 520 lbs (236 kg). The
John Deere S240 tractor is compatible with the following attachments:
42" or 48" mid-mount mower deck with a mechanical lift system, 44"
front-mount 1-stage snow blower, and 46" front blade.
| Engine Troubleshooting |
| Engine difficult to start or doesn't start |
| No fuel in fuel tank - Fill gasoline up |
| Wrong fuel grade - Use correct fuel grade |
| There is air in the fuel system - Bleed the system |
| Spark plug wiring connection is defective - Check spark plug wiring connection, repair or change |
| Spark plug is defective - Spark plug need to be replaced |
| Dirty fuel filter - Install new filter |
| Defective safety switch - Replace if required |
| Carburetor is not adjusted - Check carburetor float adjustment |
| Bad compression - Check and change damaged parts |
| Choke cable is worn or not adjusted properly - Adjust correctly or change the cable |
| Air intake screen is plugged - Need to clean or wash |
| Ignition system failure - Inspect ignition system and change failed components |
| Choke cable is stuck or faulty - Replace or service the cable |
| Air filter element is plugged - Change or service air filter |
| Fuel pump is dirty or defective - Check fuel pump and change if required |
| Engine starts and then shuts off |
| Damaged spark plug - Spark plug need to be replaced |
| Carburetor is dirty or defective - Repair or clean carburetor |
| Faulty ignition coil - Change ignition coil as required |
| Valve springs are loose or broken - Replace valve springs |
| Stuck valves - Clean the valves |
| Engine oil level low - Check and refill engine oil |
| Engine overloaded - Reduce load |
| Plugged cooling fins - Clean and wash as required |
| Too lean fuel mixture in carburetor - Adjust carburetor properly |
| Improper ignition timing - Set the ignition timing properly |
| Valve setting is wrong - Set the valves correctly |
| Stale fuel - Use correct fuel |
| Excessive engine load - Reduce the load |
| Lack of engine oil - Need to add engine oil |
| Wrong adjustment of low idle speed - Adjustment required |
| Dirty or defective fuel pump - Service or change fuel pump |
| Crankshaft or main bearings failure - Have bearings or crankshaft replaced |
| Valve clearance is improper - Adjust to proper valve clearance |
| Worn piston rings or cylinder bore - Replace defective components |
| Engine power is insufficient |
| Clogged or improperly adjusted carburetor - Adjust carburetor properly or service it |
| Dirty air filter element - Service or change air filter |
| Fuel pump is defective or dirty - Service or replace fuel pump |
| Defective ignition system - Inspect ignition system and change failed components |
| Blown cylinder head gasket - Replace the gasket as required |
| Valves are stuck or burned - Service or change valves |
| Push rod is bent or worn - Change push rod |
| Cylinder block parts are damaged - Change defective parts |
| Throttle does not open well - Inspect throttle cable and adjust it |
| Improper carburetor main jet adjustment - Adjust the carburetor main jet correctly |
| Loose or defective spark plug - Tighten or replace spark plug |
| Stuck, burned, or worn valves - Replace or service valves |
| Worn sleeve, rings, or piston - Replace faulty parts as required |
| Excessive valve clearance - Need to adjust valve clearance |
| Excessive oil consumption |
| Damaged gaskets or seals - Replace defective parts |
| Damaged valve guides or valve stems - Replace defective valves |
| Stuck or defective piston rings - Have piston rings replaced |
| Scored piston or cylinder liner - Check piston and liner, replace as required |
| Breather pipe or hose is blocked - Service or change |
| Hydrostatic Transmission Troubleshooting |
| HST transmission makes excessive noise |
| Worn or out of adjustment speed control linkage - Adjust or change linkage |
| Transmission overload - Reduce transmission load |
| Contaminated transmission fluid or low fluid level - Pour fresh fluid or add transmission fluid to proper level |
| Worn or defective transmission components - Check internal transmission parts for damage or wear and replace if required |
| Stuck or worn shift linkage - Linkage need to be replaced |
| Hydrostatic pump is stuck or worn - Change or repair pump |
| Transmission shift control components are worn or unadjusted - Adjust properly or change |
| Lack of transmission oil supply - Fill the transmission housing to proper oil level |
| Drive pulley is defective or worn - Change pulley |
| Shifting linkage is misadjusted or broken - Change or adjust linkage |
| Worn or out of adjustment speed control linkage - Repair or adjust linkage |
| Broken transmission gaskets or seals - Install new gaskets or seals |
| Final drive shaft leakage - Install new shaft seals |
| Transmission housing is cracked - Replace housing or transmission assembly |
| Mower Deck Troubleshooting |
| Mower vibrates too much |
| Mower deck drive pulley is worn or dirty - Replace or service pulley |
| Loose or defective drive belt - Adjust belt tension or replace belt |
| Unbalanced or warped mower blades - Replace or balance blades |
| Loose blade bolts tightening - Tighten bolts as required |
| Discharge chute is constantly plugged |
| High mowing speed - Use a lower speed |
| Grass is too long - Must be set to low cutting height |
| Engine runs at low revs - Adjust throttle to full opening |
| Mower cuts too low - Must be set to high cutting height |
| Mower drive belt installation is improper - Check drive belt for correct installation |
| Cutting deck clogging - Need to clean the mower deck |
| Excessive blade dullness - Need to sharpen the blades |
| Defective or worn blades - Blades must be changed |
| High mowing speed - Select a lower speed |
| Mower cuts too low - Need to set high cutting height |
| Bagger is full - Empty the bagger |
| Blades are scalping the grass |
| Bumpy or not smooth lawn - Lawn needs to be leveled |
| Cutting level is too low - Need to set high cutting height |
| Mowing speed is too high - Select a slower speed |
| Improperly leveled mower deck - Level the deck correctly |
| Blades are bent or worn - Change the blades |
| Incorrect tire pressure - Need to inflate tires |
| Incorrect tire pressure - Inflate tires as required |
| Incorrect level of mower deck - Adjust mower deck level properly |
| Blades are not sharp - Need a blade sharpening |
| Blades are worn or damaged - Install new blades |
| Mower deck is clogged - Inspect and clean cutting deck |
| Deck shell is damaged - Replace or rebuild mower deck |
| Loose or defective mower spindle - Repair or change the spindle |
| Electrical Troubleshooting |
| Battery won’t charge |
| Corroded or loose wire connections - Service or tighten cable connections |
| Faulty battery terminal clamps - Replace terminal clamps |
| Battery is defective - Replace the battery |
| Battery capacity is low - Battery needs to be recharged |
| Battery discharges quickly - Service charging system or change battery |
| Disconnected wiring or bad battery terminals - Connect cables properly or replace terminals |
| Battery is discharged or defective - Charge or replace the battery |
| Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required |
| Low battery capacity - Charge the battery |
| Faulty or incorrectly gapped spark plug - Clean, gap or replace spark plug |
| Solenoid or starter motor is faulty - Repair starter or replace solenoid |
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| Lawn and Garden Tractors Technical Specs |
