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John Deere L111 Troubleshooting
The
John Deere L111 is a 2-wheel drive lawn tractor from L100 series. This model was
manufactured between 2004 and 2006.
The John Deere L111 driveline components: a 40 cubic inches (656 cc)
Briggs and Stratton 4-cycle V-twin cylinder OHV vertical-shaft
air-cooled gasoline engine with a rated power of 20 Hp (14.8 kW), and
Tuff Torq T40 belt-driven hydrostatic transmission with infinite forward
and reverse gears.
The engine has a float-feed carburetor, full pressure lubrication,
forced air cooling system, and electronic ignition system. Max. travel
speed (forward and reverse): 5.5 mph (8.8 km/h) / 3.2 mph (5.1 km/h).
The John Deere L111 was equipped with a manual steering system, disc
brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The wheelbase
is 49 inches (1240 mm).
The tractor is compatible with a 42" mid-mount 2-blade mower deck with
cutting height of 1-4" (25-102 mm), seven cut positions, and mechanical
lifting system.
| Engine Troubleshooting |
| Engine starts up hard or will not start |
| Empty fuel tank - Fill fuel up |
| Low-quality gasoline - Use correct fuel grade |
| Fuel system clogged - Repair or replace |
| Spark plug wiring connection is defective - Inspect spark plug wiring connection, change or repair |
| Spark plug is defective - Change spark plug as required |
| Fuel filter is clogged - Replace fuel filter |
| Brake pedal not depressed - Press the brake pedal |
| Incorrect carburetor adjustment - Adjust carburetor idle mixture screw |
| Engine has low compression - Check cylinder block and replace defective parts |
| Throttle cable is adjusted incorrectly or damaged - Change cable or adjust properly |
| Air intake grill is clogged - Clean and wash as required |
| Ignition system malfunction - Inspect ignition system and change failed components |
| Stuck or faulty throttle cable - Change or clean the cable |
| Air filter element is clogged - Replace or service air filter |
| Fuel pump is damaged or dirty - Clean or replace fuel pump |
| Engine starts but then stops |
| Defective spark plug - Install new spark plug |
| Carburetor is faulty or clogged - Service or change carburetor |
| Ignition coil is damaged - Ignition coil must be replaced |
| Damaged or weak valve springs - New valve springs need to be installed |
| Valves sticking - Valves must be cleaned |
| Engine oil level is insufficient - Check oil level and add oil as required |
| Engine overloaded - Reduce engine load |
| Cooling fins are blocked - Need to wash or clean |
| Carburetor is running lean - Adjust carburetor properly |
| Ignition timing is wrong - Adjust ignition timing correctly |
| Improper valve setting - Set the valves correctly |
| Low octane fuel - Change fuel |
| Engine is overloaded - Load reducing is recommended |
| Engine oil level is insufficient - Add oil to the engine crankcase |
| Too low idle RPM - Adjustment required |
| Clogged or damaged fuel pump - Clean or install new fuel pump |
| Worn crankshaft or main bearings - Repair or replace defective parts |
| Valve clearance is improper - Adjust to proper valve clearance |
| Damaged piston rings or cylinder bore - Change faulty parts |
| Incorrectly adjusted or clogged carburetor - Adjust the carburetor properly or clean it |
| Air filter element is clogged - Service or change air filter |
| Clogged or damaged fuel pump - Test fuel pump and replace if necessary |
| Ignition failure - Check ignition and replace faulty components |
| Defective cylinder head gasket - Install new head gasket |
| Valves are burned or stuck - Service or change valves |
| Worn or defective push rod - Install a new push rod |
| Faulty cylinder block parts - Replace defective parts |
| Engine uses too much fuel |
| Choke doesn't open well - Adjust or replace choke cable |
| Carburetor main jet adjustment is incorrect - Adjust main jet as required |
| Loose or defective spark plug - Replace or tighten spark plug |
| Valves are stuck, worn, or burned - Clean or change valves |
| Worn piston, rings, or sleeve - Replace defective components |
| Excessive valve clearance - Adjustment procedure required |
| Excessive oil consumption |
| Gaskets or seals can be faulty - Replace worn parts to avoid leaks |
| Valve stems or guides are damaged - Need to replace the valves |
| Piston rings are defective or worn - Change piston rings |
| Damaged cylinder liner or piston - Inspect piston and liner, fit new components as necessary |
| Breather hose or pipe is plugged - Change or service |
| Hydrostatic Transmission Troubleshooting |
| Excessive HST transmission noise |
| Speed control pedal linkage is bent or not adjusted - Adjust or repair linkage |
| Excessive loading - Reduce the load is required |
| Low transmission oil level or contaminated oil - Add oil to the correct level or fill the transmission with fresh oil |
| Defective or worn transmission parts - Check transmission parts for damage or wear and replace if required |
| Shift linkage is corroded or worn - Lubricate or replace linkage |
| Stuck or defective hydrostatic pump - Repair or replace pump |
| Worn or misadjusted transmission shift control parts - Adjust correctly or replace |
| Transmission oil level is low - Fill up the transmission oil |
| Worn or damaged drive sheave - Install a new sheave |
| Shifter linkage is faulty or not adjusted - Adjust correctly or replace linkage |
| Worn or unadjusted speed control linkage - Adjust or replace linkage |
| Broken transmission gaskets or seals - Install new seals or gaskets |
| Final drive shaft leaks - Shaft seals need to be changed |
| Cracked transmission case - Install a new transmission case |
| Mower Deck Troubleshooting |
| Mower vibrates too much |
| Damaged or clogged mower drive pulley - Clean or change pulley |
| Drive belt is defective or loose - Adjust belt tension or replace belt |
| Mower blades are not balanced or warped - Change or balance blades |
| Loose blade mounting bolts - Tighten it fast |
| Constant clogging of discharge chute |
| High ground speed - Use a lower speed |
| Long grass - Must be set to low cutting height |
| Reduced engine speeds - Choke is not fully opening |
| Cutting height is too low - Adjust mower to higher cutting height |
| Incorrect mower drive belt installation - Check drive belt for correct installation |
| Grass patches are not cut |
| Discharge area is clogged - Mower deck needs to be cleaned |
| Not sharp blades - Need a blade sharpening |
| Damaged or worn blades - Blades must be changed |
| Fast mowing speed - Select a lower speed |
| Mower cuts too low - Use correct cutting height |
| Filled bagger - Clean bagger |
| Blades are scalping the grass |
| Bumpy or unleveled lawn - Lawn needs to be leveled |
| Mower cuts too low - Use correct cutting height |
| High mowing speed - Select a lower speed |
| Deck level is not correct - Deck should be adjusted correctly |
| Blades are bent or worn - Replace the blades |
| Low tire inflation - Correct tire pressure |
| Tires are not properly inflated - Inflate tires as required |
| Incorrect level of mower deck - Adjust mower deck level properly |
| Not sharp blades - Sharpen the blades |
| Worn or bent blades - Install new blades |
| Deck is plugged with grass - Need to clean the mower deck |
| Broken mower deck shell - Replace or rebuild mower deck |
| Bent or loose mower spindle - Spindle needs to be repaired or replaced |
| Electrical Troubleshooting |
| Battery does not charge |
| Electrical wire connections are corroded or loose Service or tighten connections |
| Battery terminal clamps are faulty - Terminal clamps should be changed |
| Worn-out battery - Battery replacement required |
| Starter motor cranks slow |
| Low battery voltage - Battery is drained, charge it |
| Battery is draining quickly - Service battery or replace it |
| Disconnected wires or corroded battery terminals - Check cables and clean or change terminals |
| Battery is drained or worn - Change or recharge battery |
| Battery cables are disconnected or improperly connected - Inspect cables and connect properly |
| Low battery output voltage - Charge the battery |
| Improperly gapped or dirty spark plug - Clean, gap or replace spark plug |
| Starter motor or solenoid is defective - Starter/solenoid should be replaced |
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| Lawn and Garden Tractors Technical Specs |
