Husqvarna LTH1797 User Manual (English)

Other manuals for Husqvarna LTH1797

Questions and Answers:

R
Renee GuzmanAug 12, 2025
Why my Husqvarna Lawn Mower will not start?
- J
  Jeffrey SanfordAug 12, 2025
  If your Husqvarna Lawn Mower won't start, several factors could be the cause. It might be out of fuel, so refill the fuel tank. The engine might not be choked properly; refer to the “TO START ENGINE” section for guidance. If the engine is flooded, wait a few minutes before trying again. Other potential issues include a bad spark plug (replace it), a weak or dead battery (recharge or replace it), a dirty air filter (clean or replace it), a dirty fuel filter (replace it), or water in the fuel (empty the fuel tank and carburetor, refill with fresh gasoline, and replace the fuel filter). Also, check for loose or damaged wiring. If the carburetor is out of adjustment, consult the “To Adjust Carburetor” section. For engine valves out of adjustment, contact an authorized service center.
H
hconradAug 16, 2025
What to do if my Husqvarna LTH1797 engine will not turn over?
- T
  Todd ParksAug 16, 2025
  If the engine of your Husqvarna Lawn Mower won't turn over, make sure the brake pedal is depressed. Also, ensure the attachment clutch is disengaged. A weak or dead battery can also prevent the engine from turning over, so recharge or replace it. Check for a blown fuse and replace it if necessary. Clean any corroded battery terminals. Inspect all wiring for looseness or damage. If the ignition switch is faulty, check or replace it. Similarly, check or replace the solenoid or starter if they are faulty. For faulty operator presence switch(es), contact an authorized service center.
E
esmithAug 19, 2025
How to fix a hard to start Husqvarna Lawn Mower?
- K
  Kyle FreemanAug 20, 2025
  If your Husqvarna Lawn Mower is hard to start, consider these potential causes: a dirty air filter (clean or replace it), a bad spark plug (replace it), or a weak or dead battery (recharge or replace it). Additionally, a dirty fuel filter (replace it) or stale or dirty fuel (empty the fuel tank and refill with fresh, clean gasoline) could be the issue. Check for loose or damaged wiring. If the carburetor is out of adjustment, consult the “To Adjust Carburetor” section. For engine valves out of adjustment, contact an authorized service center.

Husqvarna LTH1797 Specifications

General

Engine Manufacturer	Briggs & Stratton
Engine Displacement	500 cc
Fuel Type	Gasoline
Transmission Type	Hydrostatic
Blades	2
Blade Engagement	Manual
Tire Size, front	15 x 6.00-6
Cutting Height	1.5 - 4 inches

Summary

SAFETY RULES

Safe Operation Practices for Ride-On Mowers

General safety guidelines for operating ride-on mowers.

I. GENERAL OPERATION

Instructions for safe and proper operation of the tractor.

II. SLOPE OPERATION

Guidelines for safe operation on slopes to prevent tip-overs.

III. CHILDREN

Safety precautions regarding children in the mowing area.

IV. TOWING

Safety guidelines for towing attachments with the tractor.

V. SERVICE (SAFE HANDLING OF GASOLINE)

Safe practices for handling and storing gasoline.

GENERAL SERVICE

General maintenance and safety checks for the tractor.

PRODUCT SPECIFICATIONS

CUSTOMER RESPONSIBILITIES

UNASSEMBLED PARTS

ASSEMBLY

TOOLS REQUIRED FOR ASSEMBLY

List of tools needed for assembling the tractor.

TO REMOVE TRACTOR FROM CARTON

Instructions for unpacking the tractor from its shipping carton.

BEFORE REMOVING TRACTOR FROM SKID

Steps to prepare the tractor before moving it off the skid.

ATTACH STEERING WHEEL (See Fig. 1)

Step-by-step guide to assemble the steering wheel.

INSTALL STEERING WHEEL

Procedures for correctly installing the steering wheel.

INSTALL SEAT (See Fig. 2)

Instructions for mounting and adjusting the tractor seat.

CONNECT BATTERY (See Figs. 3 and 4)

Steps for connecting the tractor battery terminals safely.

TO ROLL TRACTOR OFF SKID (See Operation section for location and function of controls)

Instructions for safely moving the tractor off its shipping skid.

TO DRIVE TRACTOR OFF SKID (See Operation section for location and function of controls)

Detailed procedure for driving the tractor off the skid.

✓CHECKLIST

Final checklist before operating the tractor.

CHECK TIRE PRESSURE

Importance and procedure for checking tire pressure.

CHECK DECK LEVELNESS

Guidance on checking mower deck levelness for proper cutting.

CHECK FOR PROPER POSITION OF ALL BELTS

Ensuring drive belts are correctly routed.

CHECK BRAKE SYSTEM

Verifying the proper operation of the tractor's brake system.

OPERATION

SYMBOLS

Explanation of various symbols used on the tractor and in the manual.

SAFETY ALERT SYMBOLS

Definitions of DANGER, WARNING, CAUTION, and HOT SURFACES symbols.

KNOW YOUR TRACTOR

Introduction to tractor controls and adjustments.

HOW TO USE YOUR TRACTOR

General guidance on operating the tractor.

TO SET PARKING BRAKE (See Fig. 6)

Procedure for engaging the parking brake.

STOPPING (See Fig. 6)

Steps for stopping mower blades, ground drive, and engine.

TO USE THROTTLE CONTROL (See Fig. 6)

Recommendations for using the throttle control for efficiency.

TO MOVE FORWARD AND BACKWARD (See Fig. 6)

How to control tractor movement using the motion control lever.

TO ADJUST MOWER CUTTING HEIGHT (See Fig. 6)

How to adjust the mower deck height for desired cut.

TO OPERATE MOWER (See Fig. 7)

Instructions for engaging and operating the mower blades.

TO STOP MOWER BLADES

How to disengage the mower blades.

TO TRANSPORT (See Figs. 5 and 8)

Procedures for safely transporting the tractor.

TO OPERATE ON HILLS

Safety warnings and guidelines for operating on slopes.

TOWING CARTS AND OTHER ATTACHMENTS

Safety considerations for towing equipment.

BEFORE STARTING THE ENGINE

Preparatory checks before starting the engine.

CHECK ENGINE OIL LEVEL

Procedure for checking the engine oil level.

ADD GASOLINE

Instructions for safely adding gasoline to the fuel tank.

TO START ENGINE (See Fig. 5)

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

WARM WEATHER STARTING (50° F and above)

Procedures for starting the engine in warm conditions.

COLD WEATHER STARTING (50° F and below)

Procedures for starting the engine in cold conditions.

AUTOMATIC TRANSMISSION WARM UP

How to warm up the transmission before driving in cold weather.

PURGE TRANSMISSION

Procedure to remove air from the transmission before first use.

MOWING TIPS

Advice for optimal mowing performance and results.

MAINTENANCE

MAINTENANCE SCHEDULE

Schedule of recommended maintenance tasks and intervals.

GENERAL RECOMMENDATIONS

General advice on maintaining the tractor for warranty and performance.

BEFORE EACH USE

Daily checks to perform before operating the tractor.

LUBRICATION CHART

Diagram and guide for lubricating tractor components.

TRACTOR

General safety and maintenance reminders for the tractor.

BRAKE OPERATION

Checks and adjustments for the tractor's braking system.

TIRES

Information on tire maintenance, pressure, and care.

OPERATOR PRESENCE SYSTEM AND REVERSE OPERATION SYSTEM (ROS)

Ensuring safety systems function correctly.

BLADE CARE

Importance of sharp blades and proper replacement.

BLADE REMOVAL (See Fig. 10)

Steps for safely removing mower blades.

TO SHARPEN BLADE (See Fig. 11)

Guidance on sharpening and balancing mower blades.

BATTERY

Information on battery charging, care, and maintenance.

TO CLEAN BATTERY AND TERMINALS

Procedure for cleaning battery terminals to prevent corrosion.

V-BELTS

Guidance on checking and replacing V-belts.

TRANSAXLE COOLING

How to keep the transaxle cooling system clean.

TRANSAXLE PUMP FLUID

Information on transaxle fluid and servicing.

ENGINE LUBRICATION

Recommendations for engine oil type and viscosity.

TO CHANGE ENGINE OIL (See Figs. 12 and 13)

Step-by-step instructions for changing engine oil.

MUFFLER

Inspection and replacement of the muffler and spark arrester.

SPARK PLUGS

When and how to replace spark plugs.

IN-LINE FUEL FILTER (See Fig. 14)

Guidance on replacing the in-line fuel filter.

CLEANING

General cleaning instructions for the tractor and its parts.

AIR FILTER

Importance of the air filter and when to service it.

ENGINE OIL FILTER

When to replace the engine oil filter.

SERVICE AND ADJUSTMENTS

WARNING: TO AVOID SERIOUS INJURY, BEFORE PERFORMING ANY SERVICE OR ADJUSTMENTS:

Critical safety precautions before performing service.

TRACTOR

General service and adjustment points for the tractor.

TO REMOVE MOWER (See Fig. 15)

Step-by-step instructions for removing the mower deck.

TO INSTALL MOWER (See Fig. 15)

Step-by-step instructions for installing the mower deck.

IMPORTANT: CHECK BELT FOR PROPER ROUTING IN ALL MOWER PULLEY GROOVES.

Emphasis on correct belt routing for mower pulley systems.

TO LEVEL MOWER HOUSING

Instructions for adjusting mower housing for side-to-side and front-to-back level.

SIDE-TO-SIDE ADJUSTMENT (See Figs. 16 and 17)

How to adjust the mower deck for side-to-side balance.

FRONT-TO-BACK ADJUSTMENT (See Figs. 18 and 19)

How to adjust the mower deck for front-to-back tilt.

TO REPLACE MOWER BLADE DRIVE BELT (See Fig. 20)

Procedures for removing and installing the mower blade drive belt.

TO CHECK AND ADJUST BRAKE (See Fig. 21)

Procedures for checking and adjusting the tractor's brake system.

TO CHECK BRAKE

Steps to verify the proper functioning of the brake system.

TO ADJUST BRAKE

Detailed instructions for adjusting the brake mechanism.

TO REPLACE MOTION DRIVE BELT (See Fig. 22)

Steps for removing and installing the motion drive belt.

TRANSAXLE MOTION CONTROL LEVER NEUTRAL ADJUSTMENT (See Fig. 23)

How to adjust the motion control lever for neutral position.

TRANSMISSION REMOVAL/REPLACEMENT

Notes on transmission service and purging after reinstallation.

TO ADJUST STEERING WHEEL ALIGNMENT

How to correct steering wheel alignment issues.

FRONT WHEEL TOE-IN/CAMBER

Information that front wheel alignment is not adjustable.

TO REMOVE WHEEL FOR REPAIRS (See Fig. 24)

Steps for removing a wheel for repair or maintenance.

TO START ENGINE WITH A WEAK BATTERY (See Fig. 25)

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

TO ATTACH JUMPER CABLES

Correct procedure for connecting jumper cables to batteries.

TO REMOVE CABLES, REVERSE ORDER

Procedure for safely disconnecting jumper cables.

TO REPLACE HEADLIGHT BULB

Steps for replacing a burnt-out headlight bulb.

INTERLOCKS AND RELAYS

Troubleshooting for wiring issues affecting tractor operation.

TO REPLACE FUSE

Instructions for replacing a blown fuse.

TO REMOVE HOOD AND GRILL ASSEMBLY (See Fig. 26)

Steps for removing the tractor's hood and grill.

ENGINE

Engine-related adjustments and service.

TO ADJUST THROTTLE CONTROL CABLE

Information on throttle cable adjustment.

TO ADJUST CHOKE CONTROL

Information on choke control adjustment.

TO ADJUST CARBURETOR

Guidance on carburetor adjustments or seeking service.

STORAGE

WARNING: Never store the tractor with gasoline in the tank...

Safety warning regarding storing the tractor with fuel.

TRACTOR

Procedures for preparing the tractor for storage.

ENGINE

Engine preparation for long-term storage.

FUEL SYSTEM

Preventing fuel system issues during storage.

ENGINE OIL

Steps for draining and replacing engine oil for storage.

CYLINDER(S)

Procedure for preparing cylinders for storage.

OTHER

Additional storage tips and precautions.

TROUBLESHOOTING POINTS

Will not start

Common causes and corrections for engine not starting.

Hard to start

Common causes and corrections for difficulty starting the engine.

Engine will not turn over

Causes and corrections when the engine starter does not engage.

Engine clicks but will not start

Troubleshooting for clicking sounds without engine start.

Loss of power

Causes and corrections for reduced engine power.

Excessive vibration

Causes and corrections for excessive vibration during operation.

Engine continues to run when operator leaves seat with attachment clutch engaged

Troubleshooting for safety system failure.

Poor cut - uneven

Causes and corrections for uneven mowing results.

Mower blades will not rotate

Causes and corrections when mower blades fail to turn.

Poor grass discharge

Causes and corrections for inefficient grass discharge.

Headlight(s) not working (if so equipped)

Troubleshooting for non-functional headlights.

Battery will not charge

Causes and corrections for the battery not charging.

Loss of drive

Causes and corrections for loss of tractor drive.

Engine "backfires" when turning engine "OFF"

Cause and correction for engine backfiring on shutdown.

SCHEMATIC

IGNITION SWITCH

Diagram and explanation of ignition switch positions and circuits.

WIRING INSULATED CLIPS

Note on securing wiring with clips during servicing.

REPAIR PARTS - ELECTRICAL

REPAIR PARTS - CHASSIS AND ENCLOSURES

REPAIR PARTS - DRIVE

REPAIR PARTS - STEERING ASSEMBLY

REPAIR PARTS - ENGINE

REPAIR PARTS - SEAT ASSEMBLY

REPAIR PARTS - DECALS

REPAIR PARTS - WHEELS & TIRES

REPAIR PARTS - MOWER LIFT

REPAIR PARTS - MOWER DECK

SERVICE NOTES

SUGGESTED GUIDE FOR SIGHTING SLOPES FOR SAFE OPERATION

WARRANTY STATEMENT

SECTION 1: LIMITED WARRANTY

Details of the limited warranty coverage for Husqvarna products.

SECTION 2: HUSQVARNA'S OBLIGATIONS UNDER THE WARRANTY

Husqvarna's commitment to repair or replace defective components.

SECTION 3: ITEMS NOT COVERED BY THIS WARRANTY

List of parts and conditions excluded from warranty coverage.

SECTION 4: EXCEPTIONS AND LIMITATIONS

Limitations and exclusions to the warranty terms.

SECTION 5: CUSTOMER RESPONSIBILITIES

Owner's responsibilities for maintaining the product.

SECTION 6: PROCEDURE TO OBTAIN WARRANTY CONSIDERATION

Steps for obtaining warranty service and claims.

Related product manuals

Husqvarna LTH1797 User Manual

Table of Contents

Other manuals for Husqvarna LTH1797

Questions and Answers:

Husqvarna LTH1797 Specifications

Summary

SAFETY RULES

Safe Operation Practices for Ride-On Mowers

I. GENERAL OPERATION

II. SLOPE OPERATION

III. CHILDREN

IV. TOWING

V. SERVICE (SAFE HANDLING OF GASOLINE)

GENERAL SERVICE

PRODUCT SPECIFICATIONS

CUSTOMER RESPONSIBILITIES

UNASSEMBLED PARTS

ASSEMBLY

TOOLS REQUIRED FOR ASSEMBLY

TO REMOVE TRACTOR FROM CARTON

BEFORE REMOVING TRACTOR FROM SKID

ATTACH STEERING WHEEL (See Fig. 1)

INSTALL STEERING WHEEL

INSTALL SEAT (See Fig. 2)

CONNECT BATTERY (See Figs. 3 and 4)

TO ROLL TRACTOR OFF SKID (See Operation section for location and function of controls)

TO DRIVE TRACTOR OFF SKID (See Operation section for location and function of controls)

✓CHECKLIST

CHECK TIRE PRESSURE

CHECK DECK LEVELNESS

CHECK FOR PROPER POSITION OF ALL BELTS

CHECK BRAKE SYSTEM

OPERATION

SYMBOLS

SAFETY ALERT SYMBOLS

KNOW YOUR TRACTOR

HOW TO USE YOUR TRACTOR

TO SET PARKING BRAKE (See Fig. 6)

STOPPING (See Fig. 6)

TO USE THROTTLE CONTROL (See Fig. 6)

TO MOVE FORWARD AND BACKWARD (See Fig. 6)

TO ADJUST MOWER CUTTING HEIGHT (See Fig. 6)

TO OPERATE MOWER (See Fig. 7)

TO STOP MOWER BLADES

TO TRANSPORT (See Figs. 5 and 8)

TO OPERATE ON HILLS

TOWING CARTS AND OTHER ATTACHMENTS

BEFORE STARTING THE ENGINE

CHECK ENGINE OIL LEVEL

ADD GASOLINE

TO START ENGINE (See Fig. 5)

WARM WEATHER STARTING (50° F and above)

COLD WEATHER STARTING (50° F and below)

AUTOMATIC TRANSMISSION WARM UP

PURGE TRANSMISSION

MOWING TIPS

MAINTENANCE

MAINTENANCE SCHEDULE

GENERAL RECOMMENDATIONS

BEFORE EACH USE

LUBRICATION CHART

TRACTOR

BRAKE OPERATION

TIRES

OPERATOR PRESENCE SYSTEM AND REVERSE OPERATION SYSTEM (ROS)

BLADE CARE

BLADE REMOVAL (See Fig. 10)

TO SHARPEN BLADE (See Fig. 11)

BATTERY

TO CLEAN BATTERY AND TERMINALS

V-BELTS

TRANSAXLE COOLING

TRANSAXLE PUMP FLUID

ENGINE LUBRICATION

TO CHANGE ENGINE OIL (See Figs. 12 and 13)

MUFFLER

SPARK PLUGS

IN-LINE FUEL FILTER (See Fig. 14)

CLEANING

AIR FILTER