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Jacobsen LF 550 - User Manual

Jacobsen LF 550
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When Performance Matters.
™
Lightweight Fairway Mower with ROPS
67978 – LF 550
™
, Kubota V1505-E3B, 5 Gang 2WD
67979 – LF 550
™
, Kubota V1505-E3B, 5 Gang 4WD
67981 – LF 570
™
, Kubota V1505-E3B, 5 Gang 2WD
67982 – LF 570
™
, Kubota V1505-E3B, 5 Gang 4WD
67980 – LF 550
™
Turbo, Kubota V1505-T-E3B, 5 Gang 4WD
67983 – LF 570
™
Turbo, Kubota V1505-T-E3B, 5 Gang 4WD
WARNING
WARNING: If incorrectly used this machine can cause severe
injury. Those who use and maintain this machine should be
trained in its proper use, warned of its dangers and should
read the entire manual before attempting to set up, operate,
adjust or service the machine.
4229040-GB-Rev C
Safety, Operation and Maintenance Manual
GB
United
Kingdom

Table of Contents

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Questions and Answers

  • P
    Patrick PhelpsAug 5, 2025
    What to do if my Jacobsen LF 550 Lawn Mower engine is hard to start or runs poorly?
    • S
      Sara ThomasAug 6, 2025
      If your Jacobsen Lawn Mower engine is hard to start or runs poorly, several factors could be responsible. Begin by checking the fuel level and condition; low fuel, or dirty fuel/fuel filter, can cause issues. Fill the tank with fresh fuel, replace the fuel filter, and bleed the fuel lines. Also, inspect the air filter for dirt and replace it if necessary. For issues related to the injectors or fuel pump, or for more complex engine problems, consult the Engine Manual.
  • D
    Douglas ReedAug 11, 2025
    Why does my Jacobsen Lawn Mower engine keep stopping?
    • A
      Adrian MillerAug 11, 2025
      If your Jacobsen Lawn Mower engine stops unexpectedly, there are a couple of common reasons. First, check the fuel tank to make sure it's not empty; if it is, fill it with fresh fuel and bleed the fuel lines. Also, make sure the interlocks are properly set before you leave the operator’s seat; engage the parking brake and set the mow switch to OFF.
  • N
    Natalie PetersonAug 15, 2025
    How to fix overheating on my Jacobsen Lawn Mower?
    • B
      Barbara JensenAug 15, 2025
      If your Jacobsen Lawn Mower engine is overheating, several issues could be the cause. Start by checking the coolant level and adding coolant if it's low. Also, inspect the air intake at the radiator and clean it if it's restricted. Finally, check the water pump belt; if it's broken or loose, tighten or replace it.
  • H
    Herbert GonzalezAug 20, 2025
    What causes the battery of Jacobsen Lawn Mower to not hold charge?
    • R
      Ryan MillsAug 20, 2025
      If the battery on your Jacobsen Lawn Mower isn't holding a charge and the battery light is on, several things could be wrong. Begin by inspecting and cleaning any loose or corroded battery terminals. Then, check the electrolyte level and refill it to the correct level if it's low. Also, inspect the alternator belt and tighten or replace it if it's loose or broken. For issues related to the charging system, consult the engine manual.
  • R
    Ronnie WeberAug 25, 2025
    How to fix uneven cutting by the reels on my Jacobsen LF 550 Lawn Mower?
    • H
      hutchinsonandrewAug 26, 2025
      If the reels on your Jacobsen Lawn Mower are cutting unevenly, several adjustments might be needed. First, inspect the bedknife-to-reel adjustment. Ensure the engine speed is correct by running the engine at full throttle. Adjust the mow speed to suit the turf conditions for the best cut. Verify that the mow switch is set for forward rotation. Increase rear roller pressure by moving the down pressure spring one hole towards the spring. Improve front roller following by moving the down pressure spring one hole away from the spring.
  • S
    Sarah Zuniga DDSOct 30, 2025
    Why my Jacobsen LF 550 Lawn Mower engine will not start?
    • J
      James BrewerOct 30, 2025
      If your Jacobsen Lawn Mower's engine won't start, several factors could be at play. First, ensure the parking brake is engaged, the traction pedal is in Neutral, and the mow switch is off; then, check the interlock system and follow the correct start-up procedure. If that's not the issue, the glow plug might not have timed out; in this case, reset the ignition switch and allow the glow plug to time out before attempting to crank the engine. Also, check the battery and its connections, ensure the fuel tank isn't empty or filled with dirty fuel (fill with fresh fuel, change the fuel filter, and bleed the fuel lines), and verify that no fuses are blown (replace if necessary). Defective relays and a misadjusted or defective neutral switch on the traction pedal can also prevent starting; test a...

Summary

Lightweight Fairway Mower with ROPS

Foreword

Proposition 65 Warning

Warning about chemicals in the product.

Safety

How to Operate Safely

Guidelines for safe operation of the mower.

Preparation

Steps to take before operating the mower.

Operation

Procedures for operating the mower.

Safety Precautions

ROPS Safety Information

Information and safety precautions for the Roll Over Protection Structure.

Safe Fuel Handling

Safety guidelines for handling flammable fuels.

Maintenance and Storage

Maintenance and Storage Procedures

Procedures for maintaining and storing the mower.

Loading onto a Trailer

Instructions for loading the mower onto a trailer.

Important Safety Notes

Specifications

Product Identification

Details of mower model numbers and identification.

V1505-E3 B Engine Specifications

Specifications for the V1505-E3B engine.

V1505-T-E3 B Engine Specifications

Specifications for the V1505-T-E3B engine.

Mower Specifications

Mower Specifications

General specifications for the mower.

Weights and Dimensions

Weight and dimension details for LF 550 and LF 570 models.

LF 550 Turbo Cutting Units

Specifications for LF 550 Turbo cutting units.

LF 570 Cutting Units

Specifications for LF 570 cutting units.

Declaration of Conformity

Noise Specifications

Sound Power Level

Stated sound power level of the mower.

Operator Ear Noise Level

Noise level experienced by the operator.

Harmonised Standards

List of harmonised standards applied.

Vibration Level

Accessories and Support Literature

Accessories

List of available accessories for the mower.

Support Literature

List of available support literature.

Decals

Safety and Warning Decals

Explanation of safety and warning decals on the machine.

Decal Warnings

Starting Assist Fluids Warning

Warning about using starting assist fluids.

Controls

Control Icons

Explanation of control icons used on the mower.

Control Identification

LCD Display Unit (LDU)

Identification of the LCD Display Unit.

Mow Switch

Identification of the Mow Switch.

Parking Brake Switch

Identification of the Parking Brake Switch.

Cruise Control Switch

Identification of the Cruise Control Switch.

Ignition Switch

Identification of the Ignition Switch.

Reel Raise;Lower Joystick

Identification of the Joystick.

Traction Pedal - Forward

Identification of the Forward Traction Pedal.

Traction Pedal - Reverse

Identification of the Reverse Traction Pedal.

Engine Throttle Lever

Identification of the Engine Throttle Lever.

Armrest Controls

LCD Display Unit (LDU) Operation

Function of the LCD Display Unit.

Mow Switch Operation

Operation of the Mow Switch.

Parking Brake Switch Operation

Operation of the Parking Brake Switch.

Ignition Switch Positions

Positions and functions of the Ignition Switch.

Reel Raise;Lower Joystick Operation

Operation of the Reel Raise/Lower Joystick.

Control Functions

Backlap Switch Operation

Operation of the Backlap Switch.

Traction Pedal - Forward Operation

Operation of the Forward Traction Pedal.

Traction Pedal - Reverse Operation

Operation of the Reverse Traction Pedal.

Engine Throttle Control

Engine speed control.

Accessory Outlet

12 Volt Accessory Outlet

Information on the 12 Volt Accessory Outlet.

LCD Display Unit (LDU) Functionality

Indicator Lights Explained

Explanation of LDU indicator lights.

LDU Information

Alarm Codes and Displays

Explanation of LDU alarm codes and displays.

Diagnostic Screens

Diagnostic screens for troubleshooting.

Operator Mode Displays

Operator mode displays and functions.

Operation

Daily Inspection

Daily checks before operating the mower.

Interlock System

Testing and function of the interlock system.

Operating Procedures

Starting and Stopping

Starting the Mower

Steps for starting the mower engine.

Stopping and Parking

Procedures for stopping and parking the mower.

Driving and Mowing

Driving and Transporting

Instructions for driving and transporting the mower.

Mowing Procedures

Procedures for mowing with the machine.

Mowing Operations

Mowing Speed

Recommended mowing speeds.

Hillside Operation

Safety and operational guidelines for slopes.

Slope Calculation

Calculating Slope

Method and chart for calculating slope.

Towing and Trailering

Daily Maintenance

Maintenance and Lubrication Charts

General Maintenance Guidelines

General maintenance guidelines and safety.

Maintenance Schedule

Recommended service and lubrication intervals.

Lubrication Chart

Maintenance

General Maintenance

General maintenance guidelines and safety.

Engine Maintenance

Information regarding engine manual and break-in.

Engine Oil Checks and Changes

Engine oil checking, changing, and type.

Engine Systems Maintenance

Air Filter Service

Air filter service and replacement.

Fuel Handling Safety

Fuel handling safety and procedures.

Fuel System Maintenance

Fuel system maintenance and filter change.

Battery and Electrical Systems

Battery Safety and Maintenance

Battery safety, maintenance, and polarity.

Jump Starting Procedures

Procedures for jump starting the mower battery.

Battery Charging Guidelines

Guidelines for charging the mower battery.

Hydraulic System Maintenance

Muffler and Exhaust Safety

Safety and maintenance for muffler and exhaust.

Hydraulic Hose Inspection

Inspection and maintenance of hydraulic hoses.

Hydraulic Oil Change

Hydraulic oil change and system purging.

Filter and Electrical Systems

Hydraulic Filter Replacement

Hydraulic filter replacement procedure.

Electrical System Precautions

Electrical system precautions and components.

Cooling and Tire Maintenance

Radiator Coolant Checks

Radiator coolant checks and cleaning.

ROPS Inspection and Maintenance

Inspection and maintenance of the ROPS.

Tire Inflation and Maintenance

Tire inflation and maintenance.

Wheel and Cleaning Procedures

Wheel Mounting Procedure

Steps for mounting mower wheels.

Care and Cleaning

Procedures for cleaning and caring for the mower.

Reel Backlapping

Storage Procedures

Adjustments

General Adjustment Guidelines

General guidelines for adjustments and maintenance.

Bedknife-to-Reel Pre-Adjustment Check

Pre-adjustment checks for reel and bedknife.

Bedknife and Cutting Height

Bedknife Adjustment

Steps for adjusting the bedknife to the reel.

Cutting Height Adjustment

Procedure for adjusting the cutting height.

Attachment and Down Pressure

Flash Attach (Installing Cutting Units)

Instructions for installing and removing cutting units.

Down Pressure Adjustment

How to check and adjust down pressure.

Belt and Switch Adjustments

Belt Adjustment

Belt inspection and adjustment procedures.

Front Reel Limit Switch Adjustment

Adjustment of the front reel limit switch.

Steering and Armrest Adjustments

Steering Toe-In Adjustment

Procedure for adjusting steering toe-in.

Armrest Height Adjustment

How to adjust the armrest height.

Armrest Pivot Adjustment

Torque Specifications

Troubleshooting

General Troubleshooting Chart

Troubleshooting chart for common problems.

Quality of Cut

Quality of Cut Troubleshooting

Guide to diagnosing and troubleshooting cut quality issues.

Washboarding

Cause and remedy for washboarding cut appearance.

Cut Appearance Issues

Marcelling

Cause and remedy for marcelling cut appearance.

Step Cutting

Step Cutting

Cause and remedy for step cutting appearance.

Scalping

Scalping

Cause and remedy for scalping cut appearance.

Stragglers

Stragglers

Cause and remedy for stragglers in the cut.

Streaks

Streaks

Cause and remedy for streaks in the cut.

Windrowing

Windrowing

Cause and remedy for windrowing of clippings.

Rifling and Mismatched Units

Rifling or Tramlining

Cause and remedy for rifling or tramlining.

Mismatched Cutting Units

Cause and remedy for mismatched cutting units.

Jacobsen LF 550 Specifications

General IconGeneral
BrandJacobsen
ModelLF 550
CategoryLawn Mower
LanguageEnglish

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