Husqvarna LTH135 User Manual (English)

Questions and Answers:

M
Michelle WalkerAug 17, 2025
Why is my Husqvarna LTH135 Lawn Mower hard to start?
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  Jaime BowmanAug 18, 2025
  Your Husqvarna Lawn Mower might be hard to start due to several reasons. It could be a dirty air filter (clean or replace it), a bad spark plug (replace it), a weak or dead battery (recharge or replace it), a dirty fuel filter (replace it), or stale fuel (drain the tank and refill with fresh gasoline). Also, check for loose or damaged wiring. For carburetor or engine valves issues, it is best to consult a professional.
J
jasonpalmerAug 20, 2025
What to do if my Husqvarna Lawn Mower engine will not turn over?
- R
  rmillsAug 20, 2025
  If your Husqvarna Lawn Mower engine won't turn over, make sure the brake pedal is depressed and the attachment clutch is disengaged. Check for 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, and consider checking or replacing the ignition switch, solenoid, or starter. For faulty operator presence switches, it is best to contact a professional.
J
Jennifer HallAug 22, 2025
Why does my Husqvarna LTH135 engine backfire when turning it off?
- A
  amy65Aug 23, 2025
  Your Husqvarna Lawn Mower engine might backfire when turning it off if the engine throttle control is not set at the 'SLOW' position for 30 seconds before stopping the engine. Move the throttle control to the 'SLOW' position and allow it to idle for 30 seconds before stopping the engine.
C
Chelsea DavisAug 25, 2025
What to do if my Husqvarna LTH135 loses power?
- R
  Rachel McgeeAug 26, 2025
  If your Husqvarna Lawn Mower is losing power, there are several potential causes. You might be cutting too much grass or going too fast, so try setting to a higher cut position and reduce speed. Ensure the throttle is not in the 'CHOKE' position. Clean any buildup of grass, leaves, and trash under the mower. Also, check the air filter, oil level, and spark plug. Other possible causes include a dirty fuel filter, stale fuel, water in the fuel, a loose spark plug wire, dirty engine air screen/fins, or a dirty/clogged muffler. Finally, inspect the wiring for any issues.
J
Jay MartinAug 27, 2025
How to fix poor cut on my Husqvarna Lawn Mower?
- T
  Taylor FarleyAug 27, 2025
  A poor, uneven cut on your Husqvarna Lawn Mower can be due to several factors. Check for a worn, bent, or loose blade and replace/tighten as necessary. Ensure the mower deck is level. Clean any buildup of grass, leaves, and trash under the mower. Also, inspect the blade mandrel for bending and replace if needed. Finally, check for clogged mower deck vent holes and clean around the mandrels to open them.
E
Elizabeth StewartAug 30, 2025
Why is my Husqvarna LTH135 battery not charging?
- A
  annettemillerAug 30, 2025
  If your Husqvarna Lawn Mower battery is not charging, it could be due to bad battery cells, requiring a battery replacement. Check and clean all cable connections to ensure they are secure. If equipped, a faulty regulator or alternator could also be the cause, necessitating their replacement.
A
Alex JohnsonSep 1, 2025
What to do if my Husqvarna Lawn Mower has poor grass discharge?
- J
  Jose StephensSep 1, 2025
  If your Husqvarna Lawn Mower has poor grass discharge, ensure the engine speed is set to 'FAST' and you are not traveling too fast. Avoid mowing wet grass. Check that the mower deck is level and the tire pressure is correct and even. Inspect the blade for wear, damage, or looseness. Clean any buildup under the mower deck. Also, check the mower drive belt for wear. Make sure that blades are properly installed with sharp edge down and are the correct blades for the mower. Clear any clogged mower deck vent holes around the mandrels.
E
esosaSep 4, 2025
Why does my Husqvarna LTH135 Lawn Mower have excessive vibration?
- J
  Jack FranklinSep 4, 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 also need replacement. Also, check for any loose or damaged parts and tighten or replace them as needed.
M
michaelbarnesSep 6, 2025
What to do if my Husqvarna LTH135 Lawn Mower engine clicks but will not start?
- T
  Tony HallSep 6, 2025
  If your Husqvarna Lawn Mower engine clicks but doesn't start, the issue could stem from a weak or dead battery (recharge or replace it), corroded battery terminals (clean them), loose or damaged wiring (check it), or a faulty solenoid or starter (check/replace them).
J
Jacob ClarkSep 9, 2025
What to do if Husqvarna LTH135 blades will not rotate?
- R
  Rodney MooreSep 9, 2025
  If the blades on your Husqvarna Lawn Mower won't rotate, check for an obstruction in the clutch mechanism and remove it. Also, inspect the mower drive belt for wear or damage and replace it if necessary. Other possible causes include a frozen idler pulley or a frozen blade mandrel, both of which would require replacement.

Husqvarna LTH135 Specifications

General

Brand	Husqvarna
Model	LTH135
Category	Lawn Mower
Language	English

Summary

SAFETY RULES

GENERAL OPERATION

Practices for safe operation of ride-on mowers, including general use and rider responsibility.

SLOPE OPERATION

Guidelines for safely operating the mower on slopes, including precautions for tip-over accidents.

CHILDREN

Safety measures to prevent accidents involving children around the mower.

SERVICE SAFETY

Safety precautions related to maintenance, refueling, and general servicing of the mower.

PRODUCT SPECIFICATIONS

CUSTOMER RESPONSIBILITIES

Owner's duties for safe operation and maintenance of the tractor.

UNASSEMBLED PARTS

ASSEMBLY

TOOLS REQUIRED FOR ASSEMBLY

Lists essential tools needed for assembling the tractor's parts.

TO REMOVE TRACTOR FROM CARTON

Step-by-step instructions for safely unpacking the tractor from its shipping carton.

INSTALL STEERING WHEEL

Procedures for attaching the steering wheel to the extension shaft.

INSTALL SEAT

Steps for properly mounting and adjusting the tractor seat.

TO ROLL TRACTOR OFF SKID

Instructions for safely moving the tractor off its shipping skid.

TO DRIVE TRACTOR OFF SKID

Guide for safely operating the tractor to remove it from the skid.

CHECK TIRE PRESSURE

Importance of correct tire pressure for performance and how to check it.

CHECK DECK LEVELNESS

Procedure for ensuring the mower deck is properly leveled for optimal cutting.

CHECK BRAKE SYSTEM

How to check and ensure the brake system is functioning correctly.

OPERATION

Understanding Tractor Symbols

Explanation of various symbols used on the tractor and in its literature.

Hazard Symbols and Definitions

Explains DANGER, WARNING, CAUTION, HOT SURFACES, FIRE symbols and their meanings.

Know Your Tractor Controls

Familiarizing yourself with tractor controls, their locations, and functions.

Starting and Stopping Procedures

Comprehensive guide to starting the engine, engaging/disengaging blades, and stopping the tractor.

Operating the Tractor

How to set parking brake, move forward/backward, and adjust cutting height.

Mowing and Hill Operation

Guidelines for mowing, safe operation on slopes, and towing attachments.

Fueling and Engine Starting

Procedures for adding fuel, starting the engine in different conditions, and transmission warm-up/purge.

Mowing Tips

Advice for optimal mowing performance and results.

MAINTENANCE

MAINTENANCE SCHEDULE

A comprehensive schedule of required maintenance tasks and intervals.

PRE-USE CHECKS AND LUBRICATION

Essential checks before use and lubrication guide for the tractor.

TRACTOR COMPONENTS MAINTENANCE

Maintenance for brakes, tires, operator presence system, blades, and battery.

ENGINE AND TRANSMISSION MAINTENANCE

Servicing engine oil, air filter, cooling fins, fuel filter, and transaxle cooling.

CLEANING AND REPLACEMENT

General cleaning, muffler, spark plug, and fuel filter replacement procedures.

SERVICE AND ADJUSTMENTS

MOWER DECK SERVICE

Procedures for removing, installing, and leveling the mower deck.

DRIVE BELT REPLACEMENT

Steps for replacing the mower blade drive belt.

BRAKE AND MOTION DRIVE BELT ADJUSTMENT/REPLACEMENT

How to check/adjust brakes and replace the motion drive belt.

NEUTRAL ADJUSTMENT AND STEERING ALIGNMENT

Adjusting the motion control lever and steering wheel alignment.

WHEEL REPAIRS AND BATTERY STARTING

Removing wheels for repair and jump-starting the tractor with a weak battery.

JUMPER CABLES AND LIGHTING

Using jumper cables, replacing headlight bulbs, fuses, and checking wiring.

HOOD/GRILL AND CARBURETOR ADJUSTMENT

Removing hood/grill and adjusting the carburetor for optimal engine performance.

STORAGE

TRACTOR AND ENGINE STORAGE PREPARATION

Preparing the tractor and engine for long-term storage, including fuel and oil.

TROUBLESHOOTING POINTS

STARTING AND POWER ISSUES

Diagnosing and resolving problems with engine starting, turning over, and power loss.

VIBRATION AND CLICKS

Addressing excessive vibration and engine clicking issues.

CUTTING AND DISCHARGE PROBLEMS

Troubleshooting uneven cuts, non-rotating blades, and poor grass discharge.

OPERATIONAL AND ELECTRICAL ISSUES

Resolving issues with operator presence system, headlights, battery charging, drive loss, and engine backfire.

SCHEMATIC

IGNITION AND WIRING DIAGRAMS

Electrical schematic, ignition switch circuits, and wiring clip notes.

REPAIR PARTS

ELECTRICAL COMPONENTS

Diagram of electrical components with key numbers for identification.

ELECTRICAL PARTS LIST

List of electrical parts with part numbers and descriptions for ordering.

CHASSIS AND ENCLOSURES

Diagram of chassis and enclosure parts with key numbers for identification.

CHASSIS AND ENCLOSURES PARTS LIST

List of chassis and enclosure parts with part numbers and descriptions for ordering.

DRIVE SYSTEM COMPONENTS

Diagram of drive system components with key numbers for identification.

DRIVE SYSTEM PARTS LIST

List of drive system parts with part numbers and descriptions for ordering.

STEERING ASSEMBLY COMPONENTS

Diagram of steering assembly components with key numbers for identification.

STEERING ASSEMBLY PARTS LIST

List of steering assembly parts with part numbers and descriptions for ordering.

SEAT ASSEMBLY COMPONENTS

Diagram of seat assembly components with key numbers for identification.

DECALS AND WHEELS & TIRES

Diagrams showing locations of decals and components for wheels and tires.

ENGINE COMPONENTS

Diagram of engine components with key numbers for identification.

ENGINE PARTS LIST

List of engine parts with part numbers and descriptions for ordering.

MOWER DECK COMPONENTS

Diagram of mower deck components with key numbers for identification.

MOWER DECK PARTS LIST

List of mower deck parts with part numbers and descriptions for ordering.

MOWER LIFT COMPONENTS

Diagram of mower lift components with key numbers for identification.

MOWER LIFT PARTS LIST

List of mower lift parts with part numbers and descriptions for ordering.

SUGGESTED GUIDE FOR SIGHTING SLOPES FOR SAFE OPERATION

WARRANTY STATEMENT

LIMITED WARRANTY DETAILS

Details the warranty period, coverage, exceptions, and customer responsibilities.

WARRANTY CLAIM PROCEDURE

Steps to follow for obtaining warranty service and required documentation.

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Husqvarna LTH135 User Manual

Table of Contents

Questions and Answers:

Husqvarna LTH135 Specifications

Summary

SAFETY RULES

GENERAL OPERATION

SLOPE OPERATION

CHILDREN

SERVICE SAFETY

PRODUCT SPECIFICATIONS

CUSTOMER RESPONSIBILITIES

UNASSEMBLED PARTS

ASSEMBLY

TOOLS REQUIRED FOR ASSEMBLY

TO REMOVE TRACTOR FROM CARTON

INSTALL STEERING WHEEL

INSTALL SEAT

TO ROLL TRACTOR OFF SKID

TO DRIVE TRACTOR OFF SKID

CHECK TIRE PRESSURE

CHECK DECK LEVELNESS

CHECK BRAKE SYSTEM

OPERATION

Understanding Tractor Symbols

Hazard Symbols and Definitions

Know Your Tractor Controls

Starting and Stopping Procedures

Operating the Tractor

Mowing and Hill Operation

Fueling and Engine Starting

Mowing Tips

MAINTENANCE

MAINTENANCE SCHEDULE

PRE-USE CHECKS AND LUBRICATION

TRACTOR COMPONENTS MAINTENANCE

ENGINE AND TRANSMISSION MAINTENANCE

CLEANING AND REPLACEMENT

SERVICE AND ADJUSTMENTS

MOWER DECK SERVICE

DRIVE BELT REPLACEMENT

BRAKE AND MOTION DRIVE BELT ADJUSTMENT/REPLACEMENT

NEUTRAL ADJUSTMENT AND STEERING ALIGNMENT

WHEEL REPAIRS AND BATTERY STARTING

JUMPER CABLES AND LIGHTING

HOOD/GRILL AND CARBURETOR ADJUSTMENT

STORAGE

TRACTOR AND ENGINE STORAGE PREPARATION

TROUBLESHOOTING POINTS

STARTING AND POWER ISSUES

VIBRATION AND CLICKS

CUTTING AND DISCHARGE PROBLEMS

OPERATIONAL AND ELECTRICAL ISSUES

SCHEMATIC

IGNITION AND WIRING DIAGRAMS

REPAIR PARTS

ELECTRICAL COMPONENTS

ELECTRICAL PARTS LIST

CHASSIS AND ENCLOSURES

CHASSIS AND ENCLOSURES PARTS LIST

DRIVE SYSTEM COMPONENTS

DRIVE SYSTEM PARTS LIST

STEERING ASSEMBLY COMPONENTS

STEERING ASSEMBLY PARTS LIST

SEAT ASSEMBLY COMPONENTS

DECALS AND WHEELS & TIRES

ENGINE COMPONENTS

ENGINE PARTS LIST

MOWER DECK COMPONENTS

MOWER DECK PARTS LIST

MOWER LIFT COMPONENTS

MOWER LIFT PARTS LIST

SUGGESTED GUIDE FOR SIGHTING SLOPES FOR SAFE OPERATION

WARRANTY STATEMENT

LIMITED WARRANTY DETAILS

WARRANTY CLAIM PROCEDURE

Related product manuals