Husqvarna LTH1842 User Manual (English)

Questions and Answers:

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Sandra BrownJul 30, 2025
Why Husqvarna Lawn Mower will not start?
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  Robert MartinezJul 30, 2025
  Your Husqvarna Lawn Mower might not start due to several reasons: it could be out of fuel, so refill the fuel tank. The engine may not be choked properly, refer to the “TO START ENGINE” section in the Operation section. The engine could be flooded, wait a few minutes before trying again. Other potential causes include a bad spark plug (replace it), a dirty air filter (clean or replace it), a dirty fuel filter (replace it), water in the fuel (empty and refill with fresh gasoline, replacing the fuel filter), loose or damaged wiring (check all wiring). In some cases, the carburetor might be out of adjustment (see “To Adjust Carburetor” in the Service Adjustments section), or the engine valves need adjustment, in which case you should contact an authorized service center/department.
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Lisa GonzalesAug 3, 2025
What to do if Husqvarna Lawn Mower engine will not turn over?
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  Adriana BrownAug 3, 2025
  If your Husqvarna Lawn Mower engine won't turn over, make sure the brake pedal is depressed. Also, check that the attachment clutch is disengaged. Other possible causes include a weak or dead battery (recharge or replace it), a blown fuse (replace it), or corroded battery terminals (clean them). Inspect for loose or damaged wiring. If these steps don't resolve the issue, the ignition switch, solenoid, or starter may be faulty and need checking or replacement. In the case of faulty operator presence switch(es), contact an authorized service center/department.
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William JimenezAug 8, 2025
Why is my Husqvarna Lawn Mower hard to start?
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  alexander30Aug 8, 2025
  A Husqvarna Lawn Mower that's hard to start might have a dirty air filter (clean or replace it) or a bad spark plug (replace it). Other possible causes include a weak or dead battery (recharge or replace it), a dirty fuel filter (replace it), or stale or dirty fuel (empty and refill with fresh, clean gasoline). Check for loose or damaged wiring. If the problem persists, the carburetor might be out of adjustment (see “To Adjust Carburetor” in the Service Adjustments section), or the engine valves may need adjustment, requiring you to contact an authorized service center/department.
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dalton23Aug 18, 2025
What causes excessive vibration in Husqvarna LTH1842?
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  Kelly CervantesAug 18, 2025
  Excessive vibration in your Husqvarna Lawn Mower can be caused by a worn, bent, or loose blade; replace the blade and tighten the blade bolt. Another cause can be a bent blade mandrel, which would need replacement. Also, check for any loose or damaged parts, tighten any loose parts, and replace any damaged ones.
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Dennis CordovaAug 23, 2025
What to do if Husqvarna LTH1842 engine clicks but will not start?
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  Jeffrey WestAug 23, 2025
  If your Husqvarna Lawn Mower engine clicks but doesn't start, the battery may be weak or dead; try recharging or replacing it. Also, check for corroded battery terminals and clean them. Inspect the wiring for any looseness or damage. If the issue persists, the solenoid or starter may be faulty and require checking or replacement.

Husqvarna LTH1842 Specifications

General

Engine Power	18 hp
Cutting Width	42 inches
Transmission Type	Hydrostatic
Fuel Capacity	3 gallons
Cutting Height Range	1.5 - 4 inches
Engine Type	Briggs & Stratton
Warranty	3 years