________________________________________________________________________________________
Husqvarna TC138 Troubleshooting
The
Husqvarna TC 138 is a two-wheel drive lawn tractor with cast-iron front axle.
This model was manufactured from 2014 to 2019. The Husqvarna TC138 driveline
components: Briggs and Stratton 31R577 Intek 4-cycle single cylinder OHV
vertical shaft air-cooled gasoline engine and Tuff Torq K46 DF belt-driven
hydrostatic transmission with infinite forward and reverse gears.
A 30.5 cu.in (500 cc) engine has a cylinder bore of 3.56" (91 mm),
piston stroke of 3.06" (78 mm), and rated power of 13.5 hp (10 kW). Max.
forward speed - 5 mph (8 kph), max. reverse speed - 2.2 mph (3.5 kph).
The tractor was equipped with 15x6.00-6 front tires and 18x8.50-8 rear
tires. The wheelbase is 46.8 in (1190 mm). The lawn tractor is
compatible with a 38" mid-mount 2-blade side discharge mower deck with
cutting height of 1.5-4.0" (38-102 mm), six cut positions, and
mechanical lift system.
Engine Troubleshooting |
Engine will not start or hard to start |
No fuel in fuel tank - Add fuel |
Improper fuel grade - Use correct fuel grade |
Air trapped in fuel system - Bleed air |
Faulty spark plug wire connection - Inspect the spark plug wire connection, replace or repair |
Damaged spark plug - Change spark plug as required |
Fuel filter is dirty - Replace fuel filter |
Brake pedal not pushed down - Push the brake pedal down |
Carburetor components worn out - Repair or replace parts |
Low compression - Check and replace worn parts |
Incorrectly adjusted or damaged throttle cable - Change cable or adjust properly |
Engine runs intermittently |
Cooling fins are plugged - Clean and wash as required |
Ignition failure - Check ignition and replace faulty components |
Throttle cable is defective or stuck - Service or replace the cable |
Air filter is dirty - Replace or clean air filter |
Fuel pump is clogged or faulty - Service or replace fuel pump |
Engine starts but stops suddenly |
Defective spark plug - Change spark plug as required |
Carburetor is defective or dirty - Carburetor needs to be replaced or cleaned |
Faulty ignition coil - Install a new ignition coil |
Valve springs are broken or bad - Valve springs need to be changed |
Stuck valves - Clean the valves |
Low engine oil level - Check and refill engine oil |
Engine is running overloaded - Load reducing is recommended |
Air intake screen is plugged - Need to wash or clean |
Too lean carburetor mixture - Use proper settings |
Bad ignition timing - Set the ignition timing correctly |
Incorrect valve setting - Valves needs to be set correctly |
Engine knocking sound or abnormal noise |
Low octane gasoline - Change gasoline |
Engine overloaded - Load reducing required |
Insufficient engine oil - Fill up the engine oil |
Low idle speed setting is not correct - Adjustment required |
Fuel pump is dirty or defective - Service or change fuel pump |
Worn crankshaft or main bearings - Have bearings or crankshaft replaced |
Valve clearance is wrong - Adjust to proper valve clearance |
Damaged cylinder bore or piston rings - Change defective components |
Carburetor is clogged or improperly adjusted - Carburetor needs to be adjusted correctly or cleaned |
Air filter element is plugged - Clean or change air filter |
Dirty or faulty fuel pump - Check fuel pump and replace if necessary |
Ignition system is defective - Inspect ignition system and change failed components |
Worn cylinder head gasket - Change cylinder head gasket |
Burned or stuck valves - Service or replace valves |
Worn or damaged push rod - Change push rod |
Cylinder block parts are faulty - Change defective components |
Engine uses too much fuel |
Insufficient choke opening - Inspect choke cable and adjust as required |
Carburetor main jet adjustment is incorrect - Adjust main jet as required |
Spark plug is defective or loose - Replace or tighten spark plug |
Burned, worn, or stuck valves - Change or service valves |
Rings, sleeve, or piston are damaged - Change faulty components |
Improper valve clearance - Adjust to proper valve clearance |
Engine consuming too much oil |
Gaskets or seals can be faulty - Replace to repair leaks |
Damaged valve stems or valve guides - Install new valves |
Worn or stuck piston rings - Have piston rings replaced |
Cylinder liner or piston is damaged - Inspect piston and liner, replace as required |
Breather hose or pipe is clogged - Change or service |
Hydrostatic Transmission Troubleshooting |
HST transmission noises |
Speed control linkage is defective or unadjusted - Replace or adjust linkage |
Transmission overloaded - The load should be reduced |
Transmission oil is contaminated or oil level is insufficient - Add oil to proper level or pour fresh transmission oil |
Damaged or worn components of hydrostatic transmission - Check internal transmission parts for damage or wear and replace if required |
Stuck or damaged gshift linkage - Replace or repair the linkage |
Defective or stuck hydrostatic pump - Repair or change pump |
Transmission shift control components are worn or unadjusted - Adjust properly or change |
Insufficient transmission oil - Check and refill the transmission oil |
Drive sheave is damaged or worn - Install a new sheave |
Shift linkage is damaged or unadjusted - Replace or adjust linkage |
Speed control pedal linkage is bent or not adjusted - Repair or adjust linkage |
Transmission gaskets or seals are worn - Replace seals or gaskets |
Leaking final drive shaft - Replace shaft seals |
Transmission case is cracked - Change broken case |
Mower Deck Troubleshooting |
Mower vibrates too much |
Worn or dirty mower drive pulley - Service or change pulley |
Drive belt is damaged or loose - Adjust belt tension or change the belt |
Cutting blades are not balanced or warped - Replace or balance blades |
Loose blade bolts tightening - Tighten it fast |
Discharge chute keeps clogging |
Ground speed is too fast - Use a slower speed |
Grass is too high - Need to set low cutting height |
Engine runs at low revs - Adjust throttle to full opening |
Cutting height is too low - Adjust mower to higher cutting height |
Improper drive belt installation - Install drive belt correctly |
Mower leaving random uncut of grass |
Clogged mower deck - Clean out the mower deck |
Not sharp blades - Need a blade sharpening |
Blades are defective or worn - Change the blades |
Ground speed is too fast - Select a lower speed |
Mower cuts too low - Need to set high cutting height |
Filled grass bag - Empty the grass bag |
Blades are scalping the grass |
Lawn is not level or bumpy - Lawn needs to be leveled |
Cutting level is too low - Need to set high cutting height |
Fast ground speed - Need to slow down |
Improper mower deck level - Level the deck properly |
Damaged or bent blades - Blades need to be replaced |
Tire pressure is too low - Check and inflate the tires |
Mower deck to cut unevenly |
Tire pressure is too low - Inflate tires as required |
Improper mower deck level - Deck should be adjusted correctly |
Blades are too dull - Blades need to be sharpened |
Blades are worn or damaged - Blades need to be replaced |
Cutting deck is clogged - Mower deck needs to be cleaned |
Damaged mower deck shell - Repair or change the deck |
Mower spindle is faulty or loose - Repair or replace the spindle |
Electrical Troubleshooting |
Battery will not charge |
Wiring connections are loose or corroded - Tighten or clean connections |
Battery terminal clamps are defective - Install new terminal clamps |
Worn-out battery - Battery replacement required |
Low battery output voltage - Low battery charging, charge as required |
Battery won’t hold charge - Battery needs service or replacement |
Bad terminals or disconnected battery cables - Connect wires correctly or change terminals |
Battery is drained or worn - Battery needs to be recharged or replaced |
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly |
Battery power is low - Charge the battery |
Faulty or incorrectly gapped spark plug - Clean, gap or replace spark plug |
Starter motor or solenoid failing - Repair starter or install a new solenoid |
________________________________________________________________________________________
________________________________________________________________________________________
Lawn and Garden Tractors Technical Specs |