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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 |
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| Lawn and Garden Tractors Technical Specs |
