Husqvarna GTH2550XP User Manual (English)

Questions and Answers:

S
Steven AndersonAug 16, 2025
What to do if my Husqvarna GTH2550XP engine will not turn over?
- D
  Desiree TrujilloAug 16, 2025
  If your Husqvarna Lawn Mower engine won't turn over, consider these potential causes: * Brake pedal not depressed: Depress the brake pedal. * Attachment clutch is engaged: Disengage the attachment clutch. * Weak or dead battery: Recharge or replace the battery. * Blown fuse: Replace the fuse. * Corroded battery terminals: Clean the battery terminals. * Loose or damaged wiring: Check all wiring. * Faulty ignition switch: Check or replace the ignition switch. * Faulty solenoid or starter: Check or replace the solenoid or starter. * Faulty operator presence switch(es): Contact an authorized service center/department.
K
kevin40Aug 19, 2025
Why does my Husqvarna GTH2550XP engine backfire when turning it off?
- P
  Pamela TaylorAug 19, 2025
  If your Husqvarna Lawn Mower engine backfires when turned off, it's likely because: * Engine throttle control not set at “SLOW” position for 30 seconds before stopping engine: Move throttle control to “SLOW” position and allow to idle for 30 seconds before stopping engine.
H
Heather DiazAug 22, 2025
Why does my Husqvarna GTH2550XP Lawn Mower engine click but not start?
- F
  frank20Aug 22, 2025
  If your Husqvarna Lawn Mower engine clicks but doesn't start, the following could be the reasons: * Weak or dead battery: Recharge or replace the battery. * Corroded battery terminals: Clean the battery terminals. * Loose or damaged wiring: Check all wiring. * Faulty solenoid or starter: Check or replace the solenoid or starter.
K
keith54Aug 28, 2025
What to do if Husqvarna GTH2550XP Lawn Mower blades will not rotate?
- D
  Denise CostaAug 28, 2025
  If the blades on your Husqvarna Lawn Mower won't rotate, it might be due to: * Obstruction in the clutch mechanism: Remove the obstruction. * Worn or damaged mower drive belt: Replace the mower drive belt. * Frozen idler pulley: Replace the idler pulley. * Frozen blade mandrel: Replace the blade mandrel.
A
Allison KellyAug 31, 2025
Why won't the battery charge on my Husqvarna GTH2550XP?
- J
  Joe HarveyAug 31, 2025
  If the battery on your Husqvarna Lawn Mower won't charge, consider these possibilities: * Bad battery cell(s): Replace the battery. * Poor cable connections: Check and clean all connections. * Faulty regulator: Replace the regulator. * Faulty alternator: Replace the alternator.
T
tayloranthonySep 3, 2025
Why is my Husqvarna Lawn Mower experiencing a loss of drive?
- B
  bwilliamsSep 3, 2025
  A loss of drive in your Husqvarna Lawn Mower may be caused by: * Freewheel control in “disengaged” position: Place the freewheel control in “engaged” position. * Motion drive belt worn, damaged, or broken: Replace the motion drive belt. * Air trapped in transmission: Purge transmission.
J
jmerrittSep 6, 2025
What causes excessive vibration in my Husqvarna GTH2550XP Lawn Mower?
- A
  Amy JonesSep 6, 2025
  Excessive vibration in your Husqvarna Lawn Mower can be attributed to: * Worn, bent, or loose blade: Replace the blade and tighten the blade bolt. * Bent blade mandrel: Replace the blade mandrel. * Loose or damaged parts: Tighten loose parts and replace damaged parts.
A
adam24Sep 9, 2025
Why are the headlights not working on my Husqvarna Lawn Mower?
- M
  Mr. Johnny CarterSep 9, 2025
  If the headlights on your Husqvarna Lawn Mower are not working, check the following: * Switch is “OFF”: Turn the switch “ON”. * Bulb(s) or lamp(s) burned out: Replace the bulb(s) or lamp(s). * Faulty light switch: Check or replace the light switch. * Loose or damaged wiring: Check wiring and connections. * Blown fuse: Replace the fuse.
C
collinswilliamSep 12, 2025
What to do if my Husqvarna Lawn Mower engine runs when I leave the seat?
- P
  parsonsandreaSep 12, 2025
  If your Husqvarna Lawn Mower engine continues to run when you leave the seat with the attachment clutch engaged, it may be due to: * Faulty operator-safety presence control system: Check wiring, switches and connections. If not corrected, contact an authorized service center/ department.

Husqvarna GTH2550XP Specifications

General

Engine Manufacturer	Kohler
Horsepower	25
Cylinders	2
Fuel Tank Capacity	3.5 gallons
Transmission Type	Hydrostatic
Transmission Manufacturer	Tuff Torq
Blades	3
Deck Material	Steel
Warranty	3 years
Deck Size	50 inches
Cutting Height	1.5 to 4 inches
Turning Radius	16 inches

Summary

Safety Rules

General Operation Safety

Safe operating procedures for the tractor.

Slope Operation Safety

Guidelines for safe operation on inclines and slopes.

Child Safety Precautions

Safety measures to protect children during operation.

Service Safety Guidelines

Safety recommendations for maintenance and repairs.

Product Specifications

Unassembled Parts

Assembly Instructions

Tools Required for Assembly

Lists tools needed for assembling the tractor.

Removing Tractor from Carton

Steps to unpack the tractor from its shipping carton.

Before Removing Tractor from Skid

Preparations before taking the tractor off the skid.

Attaching the Steering Wheel

Instructions for attaching the steering wheel assembly.

Setting Up Your Tractor

General procedures for setting up the tractor.

Installing the Seat

Steps for installing and adjusting the tractor seat.

Rolling Tractor Off Skid

Method to roll the tractor off its shipping skid.

Driving Tractor Off Skid

Method to drive the tractor off its shipping skid.

Attaching the Nose Roller

Instructions for attaching the nose roller component.

Assembling Gauge Wheels and Brackets

Attaching gauge wheels and brackets to the mower deck.

Installing Mower and Drive Belt

Instructions for installing the mower deck and drive belt.

Checking Tire Pressure

Procedure to check and adjust tire pressure.

Checking Mower Levelness

How to ensure the mower deck is properly leveled.

Checking Belt Position

Verifying correct routing of all drive belts.

Pre-Operation Checklist

A checklist of items to review before operating the tractor.

Operation Guide

Know Your Tractor Controls

Familiarizing with tractor controls and adjustments.

Setting the Parking Brake

Instructions on how to set the parking brake.

Stopping the Tractor

Procedures for stopping the mower blades, ground drive, and engine.

Using the Throttle Control

Guidelines for operating the throttle control.

Using the Choke Control

How to use the choke control for starting.

Moving Forward and Backward

Operating the motion control lever for movement.

Adjusting Mower Cutting Height

How to adjust the mower cutting height.

Adjusting Gauge Wheels

How to adjust the mower deck gauge wheels.

Operating the Mower

Steps to engage and operate the mower blades.

Operating on Hills

Safety and operational guidelines for mowing on slopes.

Transporting the Tractor

Procedures for safely transporting the tractor.

Towing Carts and Attachments

Guidelines for towing accessories with the tractor.

Before Starting the Engine

Pre-start checks and procedures for the engine.

Adding Gasoline

Instructions for safely filling the fuel tank.

Starting the Engine

Step-by-step guide to starting the tractor engine.

Automatic Transmission Warm Up

Procedure to warm up the transmission in cold weather.

Purge Transmission

Procedure to remove air from the transmission system.

Mowing Tips

Advice for optimal mowing performance and results.

Customer Responsibilities

Maintenance Schedule

A schedule for regular maintenance tasks.

General Recommendations

Overall advice for maintaining the tractor.

Before Each Use Checks

Daily checks to perform before operating the tractor.

Lubrication Chart

Diagram showing lubrication points on the tractor.

Brake Operation

Information on checking and adjusting brake operation.

Tire Maintenance

Maintenance advice related to tractor tires.

Operator Presence System

How the operator presence and interlock systems work.

Blade Care and Removal

Instructions on blade maintenance and removal.

Blade Sharpening

Guide on how to sharpen and balance mower blades.

Battery Maintenance

Information on battery maintenance and charging.

Cleaning Battery and Terminals

How to clean battery terminals to prevent issues.

V-Belt Inspection

Information on inspecting and replacing V-belts.

Transaxle Cooling System

How to maintain the transaxle cooling system.

Transaxle Pump Fluid

Information regarding transaxle fluid maintenance.

Engine Lubrication

Recommendations for engine oil type and viscosity.

Air Screen Cleaning

How to clean the air screen for engine cooling.

Engine Cooling Areas Cleaning

Procedures for cleaning engine cooling fins and areas.

Air Filter Service

Importance and service of the air filter.

Engine Oil Filter Replacement

When to replace the engine oil filter.

Muffler and Spark Arrester

Inspection and replacement of the muffler and spark arrester.

Spark Plug Replacement

When to replace spark plugs.

In-Line Fuel Filter Replacement

How to replace the in-line fuel filter.

General Cleaning Procedures

General cleaning instructions for the tractor.

Service and Adjustments

Mower Removal

Steps to detach the mower deck from the tractor.

Mower Housing Leveling

How to adjust the mower deck for level cutting.

Mower Deck Side-to-Side Adjustment

Adjusting the mower deck for side-to-side levelness.

Mower Deck Front-to-Back Adjustment

Adjusting the mower deck for front-to-back levelness.

Replacing Mower Drive Belt

Instructions for replacing the mower drive belt.

Replacing Mower Blade Drive Belt

Steps to replace the mower blade drive belt.

Adjusting Attachment Clutch

How to adjust the attachment clutch mechanism.

Replacing Motion Drive Belt

Instructions for replacing the motion drive belt.

Transaxle Neutral Adjustment

Adjusting the neutral position of the motion control lever.

Transaxle Removal/Replacement

Information on transaxle service or replacement.

Steering Wheel Alignment

How to align the tractor's steering wheel.

Front Wheel Toe-In Adjustment

Adjusting the front wheel toe-in for proper steering.

Front Wheel Camber

Information regarding front wheel camber adjustment (not adjustable).

Jump-Starting a Weak Battery

Procedure for jump-starting the tractor with a weak battery.

Wheel Removal for Repairs

Steps for removing wheels for tire repair or replacement.

Battery Replacement

Step-by-step guide for replacing the tractor battery.

Attachment Lift Spring Adjustment

How to adjust the attachment lift spring tension.

Hood and Grill Assembly Removal

Instructions for removing the tractor's hood and grill.

Headlight Bulb Replacement

How to replace a burnt-out headlight bulb.

Interlocks and Relays Check

Checking wiring for interlock and relay issues.

Fuse Replacement

How to replace the tractor's fuse.

Throttle Control Cable Adjustment

Information on adjusting the throttle control cable.

Choke Control Adjustment

Information on adjusting the choke control.

Carburetor Adjustment

Guidance on carburetor adjustment or repair.

Storage Procedures

Engine Fuel System Preparation

Procedures for preparing the fuel system for storage.

Engine Oil Change for Storage

How to change engine oil for storage.

Cylinder Preparation for Storage

Preparing the engine cylinders for long-term storage.

General Storage Advice

General storage advice for other parts.

Troubleshooting

Engine Will Not Start

Common causes and corrections for starting issues.

Engine Hard to Start

Troubleshooting difficult engine starting problems.

Engine Will Not Turn Over

Diagnosing why the engine won't crank.

Engine Clicks But Will Not Start

Troubleshooting clicking sounds when trying to start.

Loss of Engine Power

Reasons for reduced engine power and solutions.

Excessive Vibration

Identifying causes and fixes for excessive vibration.

Operator Safety System Faults

Issues with the operator presence control system.

Uneven Mowing Cut

Troubleshooting causes of uneven grass cutting.

Mower Blades Will Not Rotate

Reasons why mower blades fail to spin.

Poor Grass Discharge

Diagnosing and fixing poor grass discharge issues.

Headlight Malfunction

Troubleshooting non-functional headlights.

Battery Charging Problems

Diagnosing battery charging problems.

Loss of Drive

Troubleshooting issues with tractor drive system.

Engine Backfiring on Shutdown

Causes and solutions for engine backfiring upon shutdown.

Schematic Diagram

Slope Sighting Guide

Warranty Information

Limited Warranty Details

Details of the warranty coverage periods and terms.

Husqvarna's Warranty Obligations

What Husqvarna will do to fulfill warranty terms.

Warranty Exclusions

Specific items and conditions excluded from warranty.

Warranty Limitations and Exceptions

Limitations and exclusions to warranty claims.

Customer Maintenance Duties

Customer's duties for maintaining the product.

Warranty Claim Procedure

Steps to follow to claim warranty service.

Related product manuals

Husqvarna GTH2550XP User Manual

Table of Contents

Questions and Answers:

Husqvarna GTH2550XP Specifications

Summary

Safety Rules

General Operation Safety

Slope Operation Safety

Child Safety Precautions

Service Safety Guidelines

Product Specifications

Unassembled Parts

Assembly Instructions

Tools Required for Assembly

Removing Tractor from Carton

Before Removing Tractor from Skid

Attaching the Steering Wheel

Setting Up Your Tractor

Installing the Seat

Rolling Tractor Off Skid

Driving Tractor Off Skid

Attaching the Nose Roller

Assembling Gauge Wheels and Brackets

Installing Mower and Drive Belt

Checking Tire Pressure

Checking Mower Levelness

Checking Belt Position

Pre-Operation Checklist

Operation Guide

Know Your Tractor Controls

Setting the Parking Brake

Stopping the Tractor

Using the Throttle Control

Using the Choke Control

Moving Forward and Backward

Adjusting Mower Cutting Height

Adjusting Gauge Wheels

Operating the Mower

Operating on Hills

Transporting the Tractor

Towing Carts and Attachments

Before Starting the Engine

Adding Gasoline

Starting the Engine

Automatic Transmission Warm Up

Purge Transmission

Mowing Tips

Customer Responsibilities

Maintenance Schedule

General Recommendations

Before Each Use Checks

Lubrication Chart

Brake Operation

Tire Maintenance

Operator Presence System

Blade Care and Removal

Blade Sharpening

Battery Maintenance

Cleaning Battery and Terminals

V-Belt Inspection

Transaxle Cooling System

Transaxle Pump Fluid

Engine Lubrication

Air Screen Cleaning

Engine Cooling Areas Cleaning

Air Filter Service

Engine Oil Filter Replacement

Muffler and Spark Arrester

Spark Plug Replacement

In-Line Fuel Filter Replacement

General Cleaning Procedures

Service and Adjustments

Mower Removal

Mower Housing Leveling

Mower Deck Side-to-Side Adjustment

Mower Deck Front-to-Back Adjustment

Replacing Mower Drive Belt

Replacing Mower Blade Drive Belt

Adjusting Attachment Clutch

Replacing Motion Drive Belt