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John Deere LA135 Troubleshooting
The
John Deere LA135 is a 2-wheel drive lawn tractor from LA105 series. This model
was manufactured between 2008 and 2010.
The components of John Deere LA135 powerline system: 40 cu.in (656 cc)
Briggs and Stratton 407777 4-cycle 2-cylinder OHV vertical-shaft
air-cooled gasoline engine with a rated power of 22 hp (16.4 kW), and
Tuff Torq T40 belt-driven hydrostatic transmission with infinite forward
and reverse gears. Max. forward speed - 5.5 mph (8.8 kph), maximum
reverse speed - 3.2 mph (5.1 kph).
The tractor is equipped with a manual steering system, disc brakes,
15x6.00-6 front tires, and 20x10.00-8 rear tires. The wheelbase is 49"
(1240 mm). The John Deere LA135 is compatible with the following
attachments: a 42" mid-mount 2-blade mower deck with manual lifting
system and cutting height of 1.0-4.0 inches (25-102 mm), 46" front blade
with lift height of 6" (150 mm), or 44" front-mount two-stage snow
blower with clearing height of 18" (450 mm).
| Engine Troubleshooting |
| Engine starts hard or will not start |
| Fuel tank is empty - Fill it up |
| Improper fuel grade - Change gasoline |
| Fuel system clogged - Repair or replace |
| Spark plug wire is disconnected or loose - Check the spark plug wire connection, repair or replace |
| Spark plug is defective - Change spark plug as required |
| Clogged fuel filter - Install new filter |
| Brake pedal not depressed - Press the brake pedal |
| Carburetor problems - Carburetor diagnostics required |
| Engine has low compression - Check cylinder block and replace defective parts |
| Worn or improperly adjusted choke cable - Adjust properly or replace the cable |
| Air intake screen is plugged - Need to wash or clean |
| Ignition system malfunction - Test ignition and replace failed parts |
| Stuck or defective throttle cable - Change or clean the cable |
| Dirty air filter element - Replace or clean air filter |
| Fuel pump is faulty or clogged - Test fuel pump and change if necessary |
| Engine starts and stops immediately |
| Faulty spark plug - Change spark plug as required |
| Defective or dirty carburetor - Service or change carburetor |
| Damaged ignition coil - Replace ignition coil as necessary |
| Broken or loose valve springs - Install new valve springs |
| Stuck valves - Service the valves |
| Lack of engine oil - Checking oil level and add if necessary |
| Engine is under excessive load - Reduce the load |
| Cooling fins are plugged - Need to wash or clean |
| Carburetor fuel mixture is too lean - Set the carburetor correctly |
| Ignition timing is improper - Adjust ignition timing as required |
| Valve setting is incorrect - Set the valves properly |
| Abnormal engine noise or knocking |
| Low octane fuel - Use proper gasoline |
| Engine overload - Reduce load |
| Low engine oil level - Need to add engine oil |
| Low idle speed adjustment is incorrect - Test and adjust |
| Dirty or faulty fuel pump - Clean or change fuel pump |
| Worn main bearings or crankshaft - Have bearings or crankshaft replaced |
| Valve clearance is improper - Need to adjust valve clearance |
| Piston rings or cylinder bore are worn - Replace defective parts |
| Engine power is insufficient |
| Incorrectly adjusted or dirty carburetor - Service or correctly adjust carburetor |
| Dirty air filter element - Service or replace air filter |
| Fuel pump is faulty or clogged - Service or replace fuel pump |
| Defective ignition - Check ignition and replace faulty components |
| Blown cylinder head gasket - Replace the gasket as required |
| Valves are stuck or burned - Replace or clean valves |
| Push rod is worn or bent - Install a new push rod |
| Cylinder block parts are worn out - Change defective components |
| Excessive fuel consumption |
| Insufficient throttle opening - Adjust or replace throttle cable |
| Incorrect adjustment of carburetor main jet - Adjust it correctly |
| Spark plug is defective or loose - Spark plug need to be tightened or replaced |
| Valves are worn, burned or stuck - Clean or replace valves |
| Worn piston, rings, or sleeve - Replace faulty components |
| Improper valve clearance - Need to adjust valve clearance |
| Engine consuming too much oil |
| Defective seals or gaskets - New components need to be installed |
| Damaged valve guides or valve stems - Install new valves |
| Seized or wear piston rings - Piston rings need to be replaced |
| Piston or cylinder liner is scored - Check liner and piston, change as required |
| Breather hose or pipe is blocked - Change or clean |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission is making noise |
| Speed control linkage is defective or unadjusted - Adjust or repair linkage |
| Transmission overload - Load needs to be reduced |
| Insufficient oil level or contaminated oil - Fill to required level or change the transmission oil |
| Damaged or worn components of transmission - After disassembly and inspection, replace defective components |
| Shift linkage is stuck or damaged - Clean or change linkage |
| Hydrostatic pump is stuck or worn - Repair or replace pump |
| Misadjusted or faulty transmission shift control components - Adjust properly or change |
| Insufficient transmission oil - Fill the transmission housing to proper oil level |
| Faulty or worn drive sheave - Change sheave |
| Shift linkage is damaged or unadjusted - Adjust properly or change linkage |
| Speed control linkage is worn or unadjusted - Repair or adjust linkage |
| Transmission gaskets or seals are damaged - Seals and gaskets need to be replaced |
| Final drive shaft leakage - Replace shaft seals |
| Transmission case is cracked - Install a new transmission case |
| Mower Deck Troubleshooting |
| Mower vibrates excessively |
| Drive sheave of mower deck is dirty or worn - Clean or change sheave |
| Damaged or loose drive belt - Change belt or adjust belt tension |
| Bent or unbalanced cutting blades - Balance blades or replace it |
| Blade bolts are not tightened well - Tighten bolts as required |
| Discharge chute is regularly plugged |
| Mowing speed is too high - Need to slow down |
| Long grass - Must be set to low cutting height |
| Low engine speeds - Throttle is not fully open |
| Mower deck set to low cutting - Use correct cutting height |
| Incorrect mower drive belt installation - Check drive belt for correct installation |
| Mower deck is clogged - Mower deck needs to be cleaned |
| Blades are too dull - Sharpen the blades |
| Worn or damaged blades - Install new blades |
| High ground speed - Need to slow down |
| Cutting level is too low - Use correct cutting height |
| Filled bagger - Clean bagger |
| Bumpy or not smooth lawn - Roll or level the lawn |
| Mower cuts too low - Raise the cutting height |
| Ground speed is too fast - Operate at slower speed |
| Deck level is not correct - Adjust mower deck level properly |
| Blades are bent or worn - Blades must be changed |
| Low tire inflation - Inflate tires correctly |
| Tire pressure is too low - Need to inflate tires |
| Improperly leveled mower deck - Level the deck properly |
| Blades are not sharp - Sharpen the blades |
| Worn or defective blades - Install new blades |
| Deck is plugged with grass - Need to clean the mower deck |
| Damaged mower deck shell - Replace or rebuild mower deck |
| Mower spindle is faulty or loose - Install new spindle or repair it |
| Electrical Troubleshooting |
| Battery cannot be charged |
| Loose or corroded cable connections - Tighten or clean electrical wiring connections |
| Faulty battery terminal connectors - Terminal connectors need to be changed |
| Dead cell in battery - Use a new battery |
| Low battery capacity - Low battery charging, charge as required |
| Battery discharges quickly - Service or change the battery |
| Faulty battery terminals or disconnected cables - Connect wiring correctly or install new terminals |
| Battery is low or faulty - Battery needs to be recharged or replaced |
| Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required |
| Battery power is low - Low battery charging, charge as required |
| Spark plug gapped improperly or faulty - Clean and gap or replace |
| Solenoid or starter motor failure - Repair starter or replace solenoid |
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| Lawn and Garden Tractors Technical Specs |
