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Husqvarna YT48DXLS Troubleshooting
The
Husqvarna YT48DXLS lawn tractor was manufactured from 2017 to 2020. The
Husqvarna YT48DXLS driveline components: Kohler KT740 4-cycle OHV twin-cylinder
air-cooled gasoline engine or Kawasaki FR691V 4-cycle vertical-shaft V-twin
cylinder air-cooled gasoline engine, and Tuff Torq K46 CR belt-driven
hydrostatic transaxle with foot-controlled variable speed drive.
The 44.2 cu.in (725 cc) Kohler engine has a cylinder bore of 3.27" (83
mm), piston stroke of 2.64" (67 mm), and rated power of 25 hp (18.6 kW).
The 44.3 cu.in (726 cc) Kawasaki engine has a cylinder bore of 3.07" (78
mm), piston stroke of 3.00" (76 mm), and rated power of 23 hp (17.3 kW).
The maximum forward speed - 5.7 mph (9 km/h), max. reverse speed - 2.5
mph (4 km/h). The Husqvarna YT48DXLS is equipped with 16x6.50-6 front
tires and 20x10.0-8 rear tires. The wheelbase is 48" (1220 mm).
The lawn tractor is compatible with a 48" mid-mount 3-blade side
discharge mower deck with cutting height of 1.5-4.0" (38-101 mm),
electric blade engagement, and mechanical lift system with hand
operated.
Engine Troubleshooting |
Engine doesn't start or difficult to start |
Fuel tank is empty - Add gasoline |
Incorrect fuel grade - Change gasoline |
Clogged fuel system - Remove clogging |
Defective wiring connection of spark plug - Check the spark plug wire connection, repair or replace |
Spark plug is defective - Replace spark plug |
Plugged fuel filter - Fuel filter needs changing |
Faulty safety switch - Change damaged switch |
Carburetor is clogged - Clean the carburetor |
Poor cylinder compression - Check cylinder block and change worn parts |
Worn or improperly adjusted choke cable - Change cable or adjust properly |
Engine runs intermittently |
Air intake grill is clogged - Clean and wash as required |
Ignition system failure - Check ignition and replace faulty components |
Choke cable is stuck or faulty - Change or clean the cable |
Plugged air filter - Clean or replace air filter |
Dirty or defective fuel pump - Test fuel pump and replace if necessary |
Engine stalls after starting |
Defective spark plug - Change spark plug as required |
Defective or clogged carburetor - Service or replace carburetor |
Defective ignition coil - Replace ignition coil as necessary |
Bad or damaged valve springs - New valve springs need to be installed |
Stuck valves - Clean the valves |
Engine oil insufficient - Check and refill engine oil |
Excessive engine load - Reduce load |
Air intake screen is plugged - Wash or clean as required |
Too lean fuel mixture in carburetor - Adjust carburetor properly |
Ignition timing is improper - Adjust ignition timing as required |
Valve setting is improper - Set the valves correctly |
Abnormal engine knocking or noise |
Stale gasoline - Use proper fuel |
Engine is running overloaded - Reduce engine load |
Lack of engine oil - Fill up the oil to required level |
Incorrect low idle setting - Correct idle adjustment |
Dirty or faulty fuel pump - Inspect fuel pump and change as required |
Worn crankshaft or main bearings - Worn parts replacement required |
Incorrect valve clearance - Check and adjust |
Piston rings or cylinder bore are damaged - Replace defective components |
Carburetor is clogged or improperly adjusted - Service or correctly adjust carburetor |
Air filter is dirty - Clean or replace air filter |
Dirty or defective fuel pump - Clean or replace fuel pump |
Ignition system failure - Test ignition and replace failed parts |
Cylinder head gasket is defective - Cylinder-head gasket replacement required |
Valves are burned or stuck - Replace or clean valves |
Worn or bent push rod - Change push rod |
Faulty cylinder block parts - Defective parts need to be replaced |
Throttle opening is not full - Adjust or change throttle cable |
Carburetor main jet adjustment is incorrect - Adjust the carburetor main jet correctly |
Spark plug is defective or loose - Tighten or replace spark plug |
Valves are stuck, worn, or burned - Clean or replace valves |
Worn piston, rings, or sleeve - Replace faulty components |
Valve clearance is not correct - Adjust to proper valve clearance |
Excessive oil consumption |
Gaskets or seals can be faulty - Install new components |
Valve stems or guides are damaged - Change the valves |
Piston rings are seized or worn - Piston rings need to be replaced |
Scuffed cylinder liner or piston - Check piston and liner, install new parts as required |
Breather pipe or hose is blocked - Service or change |
Hydrostatic Transmission Troubleshooting |
HST transmission noise |
Worn or unadjusted speed control linkage - Adjust or repair linkage |
Excessive transmission load - Reduce transmission load |
Dirty transmission fluid or insufficient fluid level - Fill to required level or change the fluid |
Worn or defective parts of the hydrostatic transmission - After disassembling and inspection, change defective components |
Stuck or worn shift linkage - Linkage need to be replaced |
Hydrostatic pump is stuck or worn - Replace or repair pump |
Misadjusted or faulty transmission shift control components - Replace or adjust as required |
Low oil level - Need to add transmission oil |
Drive pulley is damaged or worn - Install a new pulley |
Shifting linkage is misadjusted or broken - Change or adjust linkage |
Bent or unadjusted speed control pedal linkage - Change or adjust linkage |
Worn transmission seals or gaskets - Replace gaskets or seals |
Final drive shaft leaks - Shaft seals need to be changed |
Transmission case is cracked - Replace case or transmission assembly |
Mower Deck Troubleshooting |
Excessive mower vibration |
Mower deck drive sheave is clogged or worn - Service or replace sheave |
Loose or defective drive belt - Belt needs to be adjusted or replaced |
Mower blades are unbalanced or bent - Balance blades or replace it |
Blade bolts are not tightened well - Tighten it fast |
Constant clogging of discharge chute |
Fast ground speed - Need to slow down |
Long grass - Need to set low cutting height |
Engine runs at low revs - Adjust throttle to full opening |
Cutting height is too low - Use correct cutting height |
Incorrect mower drive belt installation - Reinstall drive belt properly |
Mower deck is clogged - Check cutting deck and clean as necessary |
Blades are excessively dull - Need to sharpen the blades |
Worn or defective blades - Blades must be changed |
Fast ground speed - Need to slow down |
Mower deck set to low cutting - Adjust mower to higher cutting height |
Bagger is overfilled - Remove grass from bagger |
Bumpy or unleveled lawn - Roll or level the lawn |
Cutting level is too low - Need to set high cutting height |
Mowing speed is too high - Select a slower speed |
Mower deck is not leveled properly - Deck needs to be adjusted properly |
Bent or worn blades - Replace the blades |
Tires are not properly inflated - Check and inflate the tires |
Low tire pressure - Inflate tires as required |
Deck is not leveled correctly - Adjust mower deck level properly |
Blades are excessively dull - Need to sharpen the blades |
Worn or defective blades - Install new blades |
Cutting deck clogging - Check cutting deck and clean as necessary |
Deck shell is broken - Rebuild or replace mower deck |
Mower spindle is bent or loose - Repair or change the spindle |
Electrical Troubleshooting |
Battery won’t charge |
Electrical cable connections are corroded or loose - Service or tighten cable connections |
Battery terminal clamps are defective - Terminal clamps need to be replaced |
Battery bad cell - Install a new battery |
Low battery output voltage - Battery is drained, charge it |
Battery discharges quickly - Service battery or change it |
Disconnected battery cables or bad terminals - Check cable connections and change or clean terminals |
Battery is discharged or defective - Charge or replace the battery |
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly |
Low battery output voltage - Battery needs to be recharged |
Spark plug worn or incorrectly gapped - Clean and gap or replace |
Solenoid or starter motor failure - Starter/solenoid needs to be replaced |
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Lawn and Garden Tractors Technical Specs |