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Husqvarna TC 142T Troubleshooting

The Husqvarna TC 142T is a 2-wheel drive lawn tractor. This model was manufactured from 2016 to 2020. The Husqvarna TC142T drivetrain system components: Briggs and Stratton 40N777 Intek 4-cycle V-twin cylinder OHV air-cooled gasoline engine and Tuff Torq K46 DF belt-driven hydrostatic transmission with infinite forward and reverse gears.

A 40.1 cu.in (656 cc) engine has a cylinder bore of 2.97" (75 mm), piston stroke of 2.89" (73 mm), and rated power of 20 hp (14.8 kW). The maximum travel speed (forward/reverse): 5.2 mph (8.4 km/h) and 2.9 mph (4.6 km/h).

The Husqvarna TC 142T lawn mower is equipped with a manual steering system, pneumatic wheels, 15x6.00-6 front tires, and 18x8.50-8 rear tires. The tractor is compatible with a 42" mid-mount 2-blade side discharge mower deck with cutting height of 1.5-4.0 in (38-101 mm), central cutting height adjustment with spring-assisted, two anti-scalp wheels, and mechanical lifting system.

Engine Troubleshooting
Engine won't start or difficult to start
Empty fuel tank - Add fuel
Low-quality gasoline - Change gasoline
Air in fuel tank - Bleed fuel tank
Spark plug wire connection are damaged - Check spark plug wiring connection, repair or change
Damaged spark plug - Install new spark plug
Plugged fuel filter - Install new filter
Defective safety switch - Replace if required
Carburetor not adjusted - Adjust according to instructions
Low cylinder compression - Check cylinder block and replace worn parts
Throttle cable is adjusted improperly or worn - Adjust properly or replace the cable
Engine runs roughly
Plugged cooling fins - Wash or clean as required
Defective ignition system - Inspect ignition system and change failed components
Stuck or defective choke cable - Clean or change the cable
Dirty air filter element - Service or change air filter
Clogged or defective fuel pump - Clean or install new fuel pump
Engine starts and stalls suddenly
Spark plug is damaged - Change spark plug as required
Defective or clogged carburetor - Replace or service carburetor
Faulty ignition coil - Replace ignition coil as necessary
Loose or worn valve springs - New valve springs need to be installed
Stuck valves - Clean the valves
Engine overheats
Lack of engine oil - Fill up the engine oil
Engine overloaded - Reduce engine load
Air intake grill is clogged - Wash or clean as required
Carburetor mixture is too lean - Adjust carburetor correctly
Ignition timing is wrong - Set the ignition timing correctly
Valve setting is incorrect - Set the valves correctly
Engine noises or knocks
Stale gasoline - Change gasoline
Engine is overloaded - Reduce the load
Engine oil insufficient - Checking oil level and add if necessary
Incorrectly adjusted low idle speed - Correct idle adjustment
Fuel pump is dirty or defective - Clean or replace fuel pump
Crankshaft or main bearings are worn out - Repair or replace defective parts
Valve clearance is incorrect - Need to adjust valve clearance
Damaged piston rings or cylinder bore - Replace faulty parts
Engine power is insufficient
Carburetor is improperly adjusted or clogged - Clean or correctly adjust carburetor
Air filter element is plugged - Replace or clean air filter
Fuel pump is damaged or dirty - Service or replace fuel pump
Ignition failure - Test ignition and replace failed parts
Cylinder head gasket is damaged - Replace cylinder head gasket
Stuck or burned valves - Service or replace valves
Worn or defective push rod - Install a new push rod
Damaged cylinder block components - Defective components need to be replaced
High fuel consumption
Choke doesn't open well - Adjust or replace choke cable
Incorrect carburetor main jet adjustment - Adjust the carburetor main jet correctly
Loose or faulty spark plug - Replace or tighten spark plug
Valves are stuck, worn, or burned - Change or service valves
Worn sleeve, piston, or rings - Replace defective components as required
Improper valve clearance - Adjustment procedure required
Engine oil consumption is too high
Worn gaskets or seals - Install new components
Valve stems and guides are worn - Valves replacement required
Stuck or defective piston rings - Replace piston rings
Scored cylinder liner or piston - Check liner and piston, install new components as required
Breather hose or pipe is blocked - Clean or change

Hydrostatic Transmission Troubleshooting
HST transmission makes excessive noise
Speed control linkage is worn or unadjusted - Adjust or install new linkage
Excessive transmission load - The load should be reduced
Low transmission oil level or contaminated oil - Change transmission oil or top up to proper level
Worn or defective parts of the hydrostatic transmission - Check hydrostatic transmission components for defect or damage and change if necessary
Hard to shift
Shift linkage is rusty or worn - Lubricate or replace the linkage
Hydrostatic pump is stuck or worn - Change or repair pump
Transmission shift control parts are damaged or misadjusted - Adjust properly or change
Power is insufficient
Transmission oil insufficient - Check and refill the transmission oil
Worn or faulty drive pulley - Replace pulley
Damaged or misadjusted shifter linkage - Adjust correctly or replace linkage
Speed control pedal linkage is damaged or out of adjustment - Replace or adjust linkage
Transmission leakage
Worn transmission seals or gaskets - Replace seals or gaskets
Final drive shaft leakage - Replace shaft seals
Cracked transmission case - Install a new transmission case

Mower Deck Troubleshooting
Mower vibration is excessive
Clogged or damaged mower drive sheave - Clean or change sheave
Loose or damaged drive belt - Install a new belt or adjust belt tension
Mower blades are unbalanced or bent - Balance or change as needed
Blade bolts are not tightened well - Bolts should be tightened
Constant clogging of discharge chute
Fast mowing speed - Need to slow down
Grass is too high - Must be set to low cutting height
Engine rpm is too low - Open throttle fully
Low cutting height - Use correct cutting height
Drive belt installed improperly - Reinstall drive belt properly
Patches of grass uncut
Deck is plugged with grass - Clean out the mower deck
Blades are not sharp - Need a blade sharpening
Blades are worn or damaged - Blades must be changed
Ground speed is too fast - Select a lower speed
Cutting level is too low - Change cutting height adjustment
Full grass bag - Empty the grass bag
Blade scalped grass
Uneven or bumpy lawn - Lawn leveling required
Cutting height is too low - Raise the cutting height
Mowing speed is too high - Select a slower speed
Incorrectly leveled mower deck - Level the deck properly
Damaged or bent blades - Install new blades
Low tire inflation - Correct tire pressure
Mower cutting is uneven
Tire pressure is too low - Inflate tires as required
Improperly leveled mower deck - Deck should be adjusted correctly
Excessive blade dullness - Need to sharpen the blades
Blades are worn or damaged - Install new blades
Deck clogged with grass clippings - Check cutting deck and clean as necessary
Deck shell is broken - Rebuild or replace mower deck
Bent or loose mower spindle - Spindle needs to be repaired or replaced

Electrical Troubleshooting
Battery won’t charge
Wiring connections are loose or corroded - Clean or tighten wiring connections
Battery terminal clamps are faulty - Terminal clamps need to be replaced
Battery faulty cell - Use a new battery
Starter cranks slow
Low battery output - Charge the battery
Battery won’t hold charge - Service or change the battery
Battery cables are disconnected or terminals are faulty - Connect wiring properly or install new terminals
Starter is not cranking
Battery is discharged or defective - Charge or change the battery
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required
Low battery capacity - Low battery charging, charge as required
Faulty or incorrectly gapped spark plug - Clean and gap or replace
Starter motor or solenoid is defective - Replace solenoid or repair starter



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