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Husqvarna LGT2654 Troubleshooting

The Husqvarna LGT2654 is a 2WD lawn tractor. This model was manufactured from 2007 to 2013. The components of Husqvarna LGT2654 driveline system: Kohler Courage SV735 2-cylinder overhead valve air-cooled gasoline engine and Tuff Torq K46 belt-driven hydrostatic transmission.

The maximum travel speed (forward and reverse): 5.2 mph (8.4 kph) / 2.9 mph (4.7 kph). A 44.3 cubic inches (725 cc) engine output is 26 Hp (19.4 kW), and a maximum torque is 56.2 Nm (41.5 lb-ft) at 2800 rpm. The engine has one-barrel fixed main jet carburetor, pulse fuel pump, and full pressure lubrication.

The Husqvarna LGT2654 lawn tractor was equipped with a manual steering system, mechanical disc brakes, 16.5x6.50-8 front tyres, and 22x9.50-12 rear tyres. The wheelbase is 48 inches (1210 mm). The tractor is compatible with a 54" mid-mount 3-blade mower deck.

Engine Troubleshooting
Engine will not start or hard to start
Gas tank is empty - Add fuel
Incorrect fuel grade - Use correct gasoline grade
Water or air in fuel system - Remove air or water from system
Loose or disconnected spark plug wire - Check spark plug wiring connection, repair or change
Defective spark plug - Change spark plug as required
Fuel filter is dirty - Replace fuel filter
Brake pedal not depressed - Press the brake pedal
Carburetor incorrectly set - Set carb correctly
Low compression - Check and replace worn parts
Improperly adjusted or worn throttle cable - Change cable or adjust properly
Engine runs intermittently
Cooling fins are blocked - Clean and wash as required
Ignition failure - Inspect ignition system and change failed components
Throttle cable is defective or stuck - Replace or service the cable
Air filter element is plugged - Change or clean air filter
Clogged or defective fuel pump - Service or replace fuel pump
Engine stops after starting
Defective spark plug - Change spark plug as required
Clogged or faulty carburetor - Service or repair carburetor
Ignition coil is defective - Install a new ignition coil
Valve springs are weak or broken - Install new valve springs
Stuck valves - Service the valves
Engine is overheated
Engine oil level is low - Fill up the oil to required level
Engine is running overloaded - Reduce the load
Cooling fins are plugged - Clean and wash as required
Carburetor mixture is too lean - Make the correct settings
Wrong ignition timing - Set the ignition timing correctly
Improper valve setting - Set the valves properly
Engine noises or knocks
Stale fuel - Use correct fuel
Engine overloaded - Reduce engine load
Engine oil level low - Check oil level and add oil as required
Improperly adjusted low idle speed - Adjustment required
Dirty or defective fuel pump - Service or replace fuel pump
Main bearings or crankshaft failure - Change or repair worn components
Improper valve clearance - Adjust valve clearance according to specifications
Cylinder bore or piston rings are damaged - Replace faulty parts
Loss of engine power
Clogged or improperly adjusted carburetor - Clean or properly adjust carburetor
Clogged air filter - Service or change air filter
Clogged or damaged fuel pump - Check fuel pump and replace if necessary
Defective ignition system - Inspect ignition system and change failed components
Defective cylinder head gasket - Install new cylinder head gasket
Valves are stuck or burned - Replace or service valves
Push rod is bent or worn - Replace push rod
Faulty cylinder block components - Replace defective parts
Excessive fuel consumption
Throttle opening is not full - Adjust or change throttle cable
Improper carburetor main jet adjustment - Adjust main jet as required
Spark plug is defective or loose - Re-tighten or replace spark plug
Valves are worn, burned or stuck - Replace or clean valves
Worn rings, piston, or sleeve - Change defective components
Excessive valve clearance - Adjust valve clearance
Engine using too much oil
Seals or gaskets are defective - Replace to repair leaks
Valve stems or guides are damaged - Need to replace the valves
Seized or wear piston rings - Change piston rings
Scored piston or cylinder liner - Check liner and piston, install new components as required
Plugged breather pipe or hose - Replace or clean

Hydrostatic Transmission Troubleshooting
Hydrostatic transmission makes noise
Worn or out of adjustment speed control linkage - Adjust or install new linkage
Transmission overloaded - Load needs to be reduced
Transmission oil is contaminated or oil level is insufficient - Fill to required level or change the transmission oil
Damaged or worn components of hydrostatic transmission - Replace or repair defective components
Hard to shift
Rusty or worn shift linkage - Install a new gear linkage
Blocked or faulty hydrostatic pump - Replace or repair pump
Transmission shift control parts are damaged or misadjusted - Adjust correctly or replace
Low power
Transmission oil insufficient - Fill up the transmission oil
Worn or damaged drive sheave - Install a new sheave
Not adjusted or damaged shifter linkage - Change or adjust linkage
Bent or unadjusted speed control pedal linkage - Adjust or change linkage
Transmission leaks
Broken transmission gaskets or seals - Replace seals or gaskets
Final drive shaft leaks - Install new shaft seals
Transmission case is cracked - Change broken case

Mower Deck Troubleshooting
Mower vibrates excessively
Mower deck drive pulley is worn or dirty - Service or replace pulley
Loose or defective drive belt - Install a new belt or adjust belt tension
Mower blades are warped or not balanced - Balance or change blades
Loose blade bolts tightening - Tighten it fast
Discharge chute keeps clogging
High mowing speed - Select a slower speed
Grass is too high - Use a lower cutting height
Low engine speeds - Adjust choke to full opening
Mower deck set to low cutting - Adjust mower to higher cutting height
Drive belt installed improperly - Install drive belt correctly
Uncut grass when mowing
Deck is plugged with grass - Need to clean the mower deck
Excessive blade dullness - Sharpen the blades
Blades are worn or damaged - Install new blades
Ground speed is too fast - Select a slower speed
Cutting level is too low - Use a higher cutting height
Bagger is full - Empty the bagger
Blades scalping grass
Uneven or bumpy lawn - Level the lawn
Mower cuts too low - Adjust mower to higher cutting height
High mowing speed - Select a slower speed
Deck level is not correct - Adjust the level of mower deck correctly
Blades are worn or bent - Blades need to be replaced
Tires are not correctly inflated - Correct tire pressure
Mower cuts uneven
Tires are not properly inflated - Inflate tires as required
Deck level is not correct - Level the deck properly
Excessive blade dullness - Blades need to be sharpened
Damaged or worn blades - Replace the blades
Deck clogged with grass clippings - Inspect and clean cutting deck
Broken mower deck housing - Rebuild or replace mower deck
Mower spindle is faulty or loose - Change or repair the spindle

Electrical Troubleshooting
Battery cannot be charged
Wiring connections are corroded or loose - Tighten or clean electrical wiring connections
Battery terminal clamps are faulty - Replace terminal clamps
Battery dead cell - Battery replacement required
Starter motor cranks slow
Low battery output - Battery is drained, recharge it
Battery does not hold charge - Service charging system or install new battery
Disconnected cables or faulty battery terminals - Check battery wires and service or replace terminals
Starter will not crank
Battery is drained or worn - Battery needs to be recharged or replaced
Battery cables are disconnected or improperly connected - Inspect cables and connect properly
Low battery voltage - Recharge the battery
Improperly gapped or dirty spark plug - Replace or clean and gap
Defective solenoid or starter motor - Change solenoid or repair starter



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