________________________________________________________________________________________
John Deere L118 Troubleshooting
The
John Deere L118 is a L100 series lawn tractor. This model was manufactured from
2004 to 2005. The John Deere L118 tractor is powered by Briggs and Stratton
406777 4-cycle V-twin cylinder OHV vertical-shaft air-cooled gasoline engine
with operating power of 20 Hp (15.4 kW), or Briggs and Stratton 407777 4-cycle
2-cylinder OHV vertical-shaft air-cooled gasoline engine with rated power of 22
Hp (16.4 kW).
The JD L118 model is fitted with Tuff Torq T40 belt-driven hydrostatic
transmission with infinite forward and reverse gears. The maximum
forward speed - 5.5 mph (8.8 km/h), max. reverse speed - 3.2 mph (5.1
km/h). The John Deere L118 is equipped with a manual steering system,
disc brakes, 15x6.00-6 front tires, and 20x10.00-8 rear tires. The
wheelbase is 49 in (1240 mm).
The tractor is compatible with the following attachments: a 42"
mid-mount 2-blade mower deck with cutting height of 1.0-4.0" (25-102 mm)
and manual lift system, 42" front-mount dual-stage snow blower with
clearing height of 21" (530 mm) and mechanical lift.
| Engine Troubleshooting |
| Engine starts up hard or won't start |
| Empty gas tank - Add fuel |
| Low-quality gasoline - Use correct fuel grade |
| Air trapped in fuel system - Bleed air |
| Faulty spark plug wire connection - Inspect spark plug wiring connection, change or repair |
| Defective spark plug - Change spark plug |
| Fuel filter is plugged - Fuel filter needs to be replaced |
| Defective safety switch - Replace if required |
| Carburetor is dirty - Wash, clean and adjust |
| Weak cylinder compression - Inspect cylinder block and change worn parts |
| Incorrectly adjusted or damaged throttle cable - Adjust properly or change the cable |
| Plugged cooling fins - Need to clean or wash |
| Ignition failure - Check ignition and replace faulty components |
| Defective or stuck choke cable - Change or service the cable |
| Plugged air filter - Change or service air filter |
| Fuel pump is clogged or faulty - Check fuel pump and change if required |
| Engine starts but then stalls |
| Spark plug is faulty - Change spark plug as required |
| Faulty or clogged carburetor - Service or change carburetor |
| Ignition coil is not working - Install a new ignition coil |
| Valve springs are weak or broken - Valve springs need to be changed |
| Valves sticking - Service the valves |
| Engine oil insufficient - Fill up the oil to required level |
| Engine is overloaded - Load reducing required |
| Air intake grill is clogged - Need to clean or wash |
| Carburetor mixture is too lean - Adjust carburetor properly |
| Ignition timing is improper - Set the ignition timing correctly |
| Incorrect valve setting - Adjust valves as required |
| Abnormal engine noise or knocking |
| Stale fuel - Use proper gasoline |
| Engine is running overloaded - Reduce engine load |
| Lack of engine oil - Fill up the engine oil |
| Incorrectly set low idle speed - Adjust the low idle speed |
| Dirty or defective fuel pump - Inspect fuel pump and change as required |
| Main bearings or crankshaft failure - Worn parts replacement required |
| Valve clearance is incorrect - Adjustment procedure required |
| Worn cylinder bore or piston rings - Replace defective parts |
| Carburetor is improperly adjusted or clogged - Service or correctly adjust carburetor |
| Air filter is blocked - Change or service air filter |
| Fuel pump is dirty or defective - Check fuel pump and replace if necessary |
| Ignition system is defective - Check ignition and replace faulty components |
| Damaged cylinder-head gasket - Cylinder-head gasket replacement required |
| Valves are stuck or burned - Service or replace valves |
| Push rod is bent or worn - Push rod should be replaced |
| Cylinder block parts are faulty - Defective components need to be replaced |
| Engine using too much gasoline |
| Throttle is not fully open - Change or adjust throttle cable |
| Improper carburetor main jet adjustment - Adjust it properly |
| Defective or loose spark plug - Tighten or replace spark plug |
| Stuck, worn, or burned valves - Change or clean valves |
| Rings, sleeve, or piston are damaged - Change defective parts |
| Valve clearance is improper - Check and adjust |
| Excessive oil consumption |
| Gaskets or seals can be faulty - Replace to repair leaks |
| Damaged valve stems or valve guides - Replace the valves |
| Seized or wear piston rings - Change the piston rings as required |
| Worn cylinder liner or piston - Check piston and liner, replace as required |
| Breather hose or pipe is blocked - Replace or service |
| Hydrostatic Transmission Troubleshooting |
| HST transmission makes noise |
| Speed control linkage is worn or unadjusted - Adjust or replace linkage |
| Transmission overloaded - Reduce the load is required |
| Oil is dirty or oil level is too low - Fill to required level or change the transmission oil |
| Transmission components are damaged or worn - Check internal transmission parts and replace if required |
| Stuck or damaged gshift linkage - Replace or repair the linkage |
| Stuck or defective hydrostatic pump - Change or repair pump |
| Transmission shift control parts are faulty or unadjusted - Replace or adjust as required |
| Lack of transmission fluid - Checking transmission fluid level and add if necessary |
| Drive pulley is worn or faulty - Install a new pulley |
| Damaged or misadjusted shifter linkage - Adjust correctly or replace linkage |
| Speed control linkage is worn or unadjusted - Change or adjust linkage |
| Transmission gaskets or seals are damaged - Seals and gaskets need to be replaced |
| Leaking final drive shaft - Replace shaft seals |
| Transmission housing is cracked - Replace damage housing or transmission assembly |
| Mower Deck Troubleshooting |
| Excessive mower vibration |
| Worn or dirty mower drive pulley - Service or change pulley |
| Worn or loose drive belt - Adjust belt tension or change the belt |
| Cutting blades are bent or unbalanced - Replace or balance blades |
| Blade bolts are not tightened well - Bolts need to be tightened |
| Constant clogging of discharge chute |
| Mowing speed is too high - Select a slower speed |
| Grass is too high - Need to set low cutting height |
| Reduced engine speeds - Adjust throttle to full opening |
| Cutting height is too low - Adjust mower to higher cutting height |
| Drive belt installed improperly - Reinstall drive belt properly |
| Deck is plugged with grass - Mower deck needs to be cleaned |
| Excessive blade dullness - Need a blade sharpening |
| Worn or damaged blades - Blades must be changed |
| Mowing speed is too high - Use a lower speed |
| Low cutting height - Change cutting height adjustment |
| Filled bagger - Remove grass from bagger |
| Lawn is uneven or bumpy - Lawn needs to be leveled |
| Cutting level is too low - Use correct cutting height |
| High ground speed - Use a slower speed |
| Incorrectly leveled mower deck - Adjust the level of mower deck correctly |
| Worn or bent blades - Blades must be changed |
| Low tire pressure - Correct tire pressure |
| Tires are not correctly inflated - Need to inflate tires |
| Improper mower deck level - Deck should be adjusted correctly |
| Not sharp blades - Sharpen the blades |
| Bent or worn blades - Blades need to be replaced |
| Clogged mower deck - Check cutting deck and clean as necessary |
| Deck housing is broken - Repair or change the deck |
| Mower spindle is loose or defective - Repair or change the spindle |
| Electrical Troubleshooting |
| Battery will not charge |
| Loose or corroded wire connections - Tighten or service cable connections |
| Defective electrical terminal connectors - Change terminal connectors |
| Worn-out battery - Battery change required |
| Low battery voltage - Battery is drained, recharge it |
| Battery is draining quickly - Battery needs to be serviced or replaced |
| Disconnected wires or corroded battery terminals - Check cables and service or change terminals |
| Battery is discharged or defective - Recharge or replace battery |
| Battery cables are disconnected or incorrectly connected - Check cables and connect as needed |
| Low battery output voltage - Charge the battery |
| Improperly gapped or dirty spark plug - Clean, gap or change spark plug |
| Solenoid or starter motor is faulty - Repair starter or replace solenoid |
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
| Lawn and Garden Tractors Technical Specs |
