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Home / Lawn and Garden Tractors / John Deere Lawn Tractors / John Deere LX255

John Deere LX255 Troubleshooting

The John Deere LX255 lawn tractor was manufactured between 1999 and 2001. The John Deere LX255 driveline consists of a Kohler Command CV15S vertical shaft four-cycle 1-cylinder gasoline engine and Tuff Torq K62 belt-driven hydrostatic transmission with infinite forward and reverse gears.

The 26.1 cu.in (426 cc) Kohler engine has a cylinder bore of 3.6" (90 mm), piston stroke of 2.64" (67 mm), and rated power of 15 hp (11.2 kW). The maximum forward speed - 5.5 mph (8.8 km/h), max. reverse speed - 3 mph (4.8 km/h). The tractor is fitted with 15x6.00-6 front tires and 20x10.00-8 rear tires.

The wheelbase is 47.5 inches (1200 mm). The John Deere LX255 can be equipped with the following attachments: a 42" mid-mount 2-blade mower deck with cutting height of 1.5-4" (38-102 mm), 48" mid-mount 3-blade mower deck with 13 cut positions, 42" front-mount 1-stage snowblower with clearing height of 16.3" (410 mm), and 42" front blade with manual lift system.

Engine Troubleshooting
Engine starts up hard or doesn't start
No fuel in fuel tank - Fill gasoline up
Wrong fuel grade - Use correct fuel grade
Dirt and debris in fuel system - Remove debris and dirt
Spark plug wire is loose or disconnected - Inspect spark plug wiring connection, change or repair
Spark plug is defective - Install new spark plug
Fuel filter is dirty - Change fuel filter
Brake pedal not depressed - Press the brake pedal
Carburetor is clogged - Clean the carburetor
Low cylinder compression - Check cylinder block and replace worn parts
Throttle cable is adjusted incorrectly or damaged - Adjust correctly or change the cable
Engine runs roughly
Air intake screen is plugged - Wash or clean as required
Ignition failure - Check ignition and replace faulty components
Choke cable is defective or stuck - Service or replace the cable
Air filter is dirty - Service or replace air filter
Dirty or defective fuel pump - Clean or replace fuel pump
Engine starts and stalls suddenly
Defective spark plug - Install new spark plug
Clogged or faulty carburetor - Clean or change carburetor
Ignition coil is damaged - Replace ignition coil as necessary
Broken or bad valve springs - Valve springs need to be changed
Valves sticking - Valves must be cleaned
Engine overheated
Low engine oil level - Check oil level and add oil as required
Engine overload - Reduce engine load
Cooling fins are blocked - Wash or clean as required
Carburetor mixture is too lean - Make the correct settings
Ignition timing is improper - Adjust ignition timing correctly
Valve setting is incorrect - Set the valves properly
Engine noise or knocking
Stale or low octane fuel - Change fuel
Excessive engine load - Load reducing is recommended
Engine oil level is insufficient - Fill up the oil to required level
Low idle speed setting is not correct - Adjust idle speed
Fuel pump is damaged or dirty - Check fuel pump and change if required
Main bearings or crankshaft wear - Have bearings or crankshaft replaced
Improper valve clearance - Adjust valve clearance
Piston rings or cylinder bore are worn - Change defective components
Low engine power
Clogged or incorrectly adjusted carburetor - Adjust carburetor properly or service it
Plugged air filter - Clean or change air filter
Fuel pump is defective or dirty - Check fuel pump and change if required
Ignition failure - Check ignition system and replace faulty parts
Damaged cylinder-head gasket - Replace the head gasket
Burned or stuck valves - Replace or service valves
Worn or defective push rod - Install a new push rod
Faulty cylinder block components - Replace defective components
Excessive fuel consumption
Throttle is not fully open - Change or adjust throttle cable
Carburetor main jet is incorrectly adjusted - Adjust it correctly
Spark plug is loose or faulty - Spark plug need to be replaced or tightened
Valves are worn, burned or stuck - Clean or replace valves
Sleeve, piston, or rings are damaged - Change defective components
Valve clearance is not correct - Adjust to proper valve clearance
Engine oil consumption is too high
Gaskets or seals can be faulty - Replace defective parts
Valve stems and guides are worn - Valves replacement required
Piston rings are stuck or broken - Replace piston rings
Piston or cylinder liner is scored - Check piston and liner, install new parts as required
Breather hose or pipe is blocked - Change or service


Hydrostatic Transmission Troubleshooting
Hydrostatic transmission is excessively noisy
Worn or unadjusted speed control linkage - Replace or adjust linkage
Excessive transmission load - The load should be reduced
Contaminated transmission fluid or low fluid level - Add fluid to correct level or fill the transmission with fresh fluid
Damaged or worn components of hydrostatic transmission - Change or repair defective parts
Hard to shift
Damaged or loose shift linkage - Change or repair linkage
Defective or stuck hydrostatic pump - Repair or change pump
Worn or misadjusted transmission shift control parts - Adjust correctly or replace
Lack of power
Low fluid level - Need to add transmission fluid
Drive pulley is worn or faulty - Replace pulley
Not adjusted or damaged shifter linkage - Adjust properly or change linkage
Speed control linkage is worn or unadjusted - Adjust or install new linkage
Transmission leaks
Broken transmission gaskets or seals - Replace seals or gaskets
Final drive shaft is leaking - Replace shaft seals
Cracked transmission housing - Housing needs to be replaced

Mower Deck Troubleshooting
Mower vibration is excessive
Clogged or damaged mower drive sheave - Replace or service sheave
Drive belt is loose or defective - Change belt or adjust belt tension
Mower blades are bent or out of balance - Balance blades or replace it
Loose blade mounting bolts - Tighten bolts as required
Constant clogging of discharge chute
Fast mowing speed - Use a slower speed
Long grass - Use a lower cutting height
Reduced engine rpm - Choke is not fully opening
Cutting level is too low - Must be set to high cutting height
Drive belt installation is not correct - Install drive belt as required
Mower leaving random uncut of grass
Clogged mower deck - Mower deck needs to be cleaned
Blades are excessively dull - Need a blade sharpening
Blades are defective or worn - Replace the blades
High ground speed - Operate at slower speed
Mower deck set to low cutting - Use correct cutting height
Filled grass bag - Remove grass from bag
Blades are scalping the grass
Bumpy or not smooth lawn - Level the lawn
Mower deck set to low cutting - Raise the cutting height
Fast mowing speed - Use a slower speed
Incorrect level of mower deck - Deck should be adjusted correctly
Worn or bent blades - Blades must be changed
Incorrect tire pressure - Inflate tires as required
Uneven cutting
Low tire pressure - Correct tire pressure
Mower deck is not leveled properly - Level the deck properly
Excessive blade dullness - Sharpen the blades
Bent or worn blades - Install new blades
Cutting deck is clogged - Need to clean the mower deck
Damaged mower deck shell - Repair or change the deck
Loose or faulty mower spindle - Repair or change the spindle

Electrical Troubleshooting
Battery is not charging
Electrical wire connections are loose or corroded - Service or tighten connections
Defective battery terminal clamps - Change terminal clamps
Dead cell in battery - Change the battery
Starter motor cranks slow
Low battery output voltage - Charge the battery
Battery drains quickly - Service charging system or replace battery
Bad terminals or disconnected battery cables - Connect cables properly or replace terminals
Starter motor is not working
Battery is low or faulty - Charge or change the battery
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly
Low battery output voltage - Battery is drained, recharge it
Faulty or incorrectly gapped spark plug - Clean and gap or replace
Solenoid or starter motor is faulty - Repair starter or change solenoid

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