Jacobsen Eclipse 322

Other manuals for Jacobsen Eclipse 322

Questions and Answers:

L
Lisa WallaceAug 25, 2025
What to do if my Jacobsen Eclipse 322 Lawn Mower engine cranks but won't start (Diesel)?
- B
  Brianna SmithAug 25, 2025
  If your Jacobsen Lawn Mower's engine cranks but won't start (Diesel), make sure the Diesel Genset is selected and MCU LED #17 is on; check the harness connections. Check for Fuel Solenoid power; MCU LED #2 should be on; if not, check if CB 6 is tripped. Review any fault codes on the LDU. Check to see if the Fuel Solenoid Pulls and Holds. Check MCU LED'S #4 for Pull on for 0.5 sec then #5 on for Hold. If there is an overcurrent protection device in MCU tripped, check for open connection or shorted wire to GND for Pull and Hold solenoids power. Also, verify that there is 12V power to the MCU. If an overcurrent protection device in the PDU tripped, cycle power once corrected.
L
lgrossAug 26, 2025
Why don't the headlights turn on in my Jacobsen Lawn Mower?
- N
  Nicolas AllenAug 26, 2025
  If your Jacobsen Lawn Mower's headlights don't turn on, it might be due to an overcurrent protection device in the PDU tripping. Inspect for an open connection or a shorted wire to GND for the headlight(s). Cycle the power once the issue is corrected.
T
Trevor LopezAug 27, 2025
Why does my Jacobsen Eclipse 322 Lawn Mower have no steering (Electric steering system)?
- C
  Christina ClarkAug 27, 2025
  If your Jacobsen Lawn Mower has no steering (Electric steering system), check if the seat switch is functioning correctly. MCU LED #24 should be on when you are on the seat and off when you are off the seat; check the switch and harness connection. Also, check to see if circuit breaker 5 is tripped. Review any fault codes on the LDU. If an overcurrent protection device in the PDU tripped, cycle the power once corrected. Also, clean all dirt or debris from the proximity switches and check for obstructions that may interfere with switch operations.
P
Peter BarronAug 29, 2025
What to do if key switch is ON but there is no power to LDU in my Jacobsen Lawn Mower?
- A
  Anne RosalesAug 29, 2025
  If your Jacobsen Lawn Mower's key switch is ON but there is no power to the LDU, it could be because the 48VDC Battery or 48VDC Buffer Battery is not connected or is discharged; check the battery connections and voltage. Alternatively, there might be no 12V power to the LDU. If an overcurrent protection device in the PDU tripped, check for an open connection or a shorted wire to GND for LDU 48V power. Cycle power once corrected.
L
Lindsey HenrySep 1, 2025
Why is my Jacobsen Eclipse 322 Lawn Mower Genset overheating?
- E
  erica13Sep 1, 2025
  If your Jacobsen Lawn Mower experiences Genset overheating, it could be due to the genset fan not running. If an overcurrent protection device in the PDU tripped, check for an open connection or shorted wire to GND for genset fan 12V power. Cycle power once corrected.
B
brownmarkSep 3, 2025
What to do if key switch is ON but there is no power to MCU or RCU in my Jacobsen Eclipse 322?
- L
  Lisa KramerSep 3, 2025
  If your Jacobsen Lawn Mower's key switch is ON but there is no power to the MCU or RCU, it could be because the main contactor is not on due to a tripped circuit breaker. Check to see if circuit breaker 4 is tripped. Also, review any fault codes on the LDU and take appropriate action. Finally, an overcurrent protection device in the LDU may have tripped. Check for an open connection or shorted wire to the battery for main contactor coil power.
M
michael90Sep 5, 2025
What to do if my Jacobsen Eclipse 322 engine cranks but won't start (Gas)?
- C
  Cody NelsonSep 5, 2025
  If your Jacobsen Lawn Mower's engine cranks but won't start (Gas), make sure the Gas Genset is selected and MCU LED #18 should be on. Check the engine harness connection.
M
Mr. Jose EnglishSep 7, 2025
What causes no glowplug operation in my Jacobsen Eclipse 322 Lawn Mower?
- M
  morenodakotaSep 7, 2025
  If your Jacobsen Lawn Mower exhibits no glowplug operation, make sure the Diesel Genset is selected, and MCU LED #17 should be on; check the engine harness connections. Also, check MCU LED #6; it should be on when the glowplugs should be on (i.e., pre-glow, during cranking, and post-glow); if not, check if circuit breaker 6 is tripped. An overcurrent protection device in the MCU may have tripped. Check for an open connection or shorted wire to GND for the Glow Plug relay coil power. Also, verify that there is 12V power to the MCU. If an overcurrent protection device in the PDU tripped, cycle power once corrected. Review any fault codes on the LDU. Finally, check connections for CAN communication issues.
J
Jacob NelsonSep 9, 2025
Why is the manual actuator mode not working on my Jacobsen Eclipse 322?
- C
  caldwellcassandraSep 9, 2025
  If your Jacobsen Lawn Mower's manual actuator mode is not working, check that the park brake is off and the LDU Park Brake LED is on; cycle the power. Also, check connections for CAN communication issues. Review any fault codes on the LDU. Ensure the Mow switch is in the OFF position.
A
Alyssa SampsonSep 12, 2025
What to do if one or more reel motors won't run on my Jacobsen Eclipse 322 Lawn Mower?
- C
  Chelsea BennettSep 12, 2025
  If one or more of your Jacobsen Lawn Mower's reel motors won't run, make sure the Mow switch is in the ON position. Also, ensure the reel enable switches are in the ON position to enable the reels. If the machine is not moving (and if FOC is not zero), reel motors should come on when the machine starts moving forward. Review any fault codes on the LDU. If there is no power to the reels, and when the actuators are down, check RCU LEDs #8 for Left, #14 for Center, and #7 for Right; they should be on. Check PDU circuit breakers for tripped breakers: CB3 for left, CB2 for center, and CB1 for right.

Jacobsen Eclipse 322 Specifications

General

Brand	Jacobsen
Model	Eclipse 322
Category	Lawn Mower
Language	English

Summary

Batteries

Battery Safety

Essential safety practices for handling, charging, and storing batteries, including precautions for hydrogen gas and electrolyte.

Hybrid Engine Maintenance

Engine

Information on engine break-in, operation, and maintenance for gas/diesel engines, emphasizing the engine manual.

Engine Oil

Procedures for checking and changing engine oil, including oil types and checking levels after operation.

Safety

How to Operate Safely

Guidelines for safe operation, preparation, and general safety, including operator responsibilities and equipment condition.

ROPS

Safe Handling of Fuels

Precautions for safely handling and storing fuels, including refueling procedures and avoiding ignition sources.

Safety

When You Put the Mower on a Trailer

Procedures and precautions for loading the mower onto a trailer, including securing and ramp usage.

Safety

Maintenance and Storage

Procedures for cleaning, maintenance, and storing the mower, including battery disconnection and fire prevention.

Safety

Important Safety Notes

Key safety warnings and information about the interlock system, and general operating precautions.

Specifications

Product Identification

Lists model numbers and their associated configurations, including power type and drive system.

Hybrid Engines

Details specifications for gasoline and diesel engines, including make, model, power, and fuel type.

Specifications

Hybrid Batteries

Information on recommended buffer and engine batteries, including brand, part number, and dimensions.

Specifications

Battery Power Module

Details about the 48V battery power module, charger, and recommended batteries.

Cutting Units

Specifications for reel cutting units, including width, diameter, and blade options.

Specifications

Declaration of Conformity

Manufacturer's declaration of compliance with various directives, listing product codes and machine names.

Specifications

Technical Specifications Overview

Covers Power, Cutting Width, Sound Levels, and Declarations, providing key technical data.

Specifications

Declaration Compliance Details

Details on standards, signatory, and certificate number for conformity declarations.

Specifications

Vibration Level

Details hand/arm and whole body vibration levels measured during operation.

Specifications

Weights and Dimensions

Lists the weights and dimensions of the mower, including length, width, and turning radius.

Accessories & Support Literature

Lists available accessories and support literature for the mower, contact dealer for details.

Decals

Decal Identification

Explains the meaning and importance of various safety decals for mower operation.

Decals

Safety Decals and Warnings

Explains DANGER and WARNING decals related to operation, including interlock system and bystander safety.

Decals

Specific Decal Warnings

Explains warnings for Diesel Hybrid units (radiator), maintenance, and starting fluids.

Decals

Towing Decal

Instruction on disconnecting the steering chain before towing the mower.

Service Information

Fluid Capacities

Table listing fluid capacities for different mower models, including engine oil and coolant.

Recommended Service and Lubrication Intervals

Chart detailing recommended service and lubrication intervals for various mower components.

Service Information

Recommended Service and Lubrication Intervals

Continuation of the chart detailing recommended service and lubrication intervals.

Controls

Icons

Explanation of various icons used on the mower's controls, including safety and system status indicators.

Controls

Instrument Panel

Description of the instrument panel components, switches, and displays.

Controls

Operator Controls

Detailed explanation of operator controls like traction pedals, steering, and seat adjustment.

Controls

Operator Convenience Features

Features designed for operator comfort and ease of use, such as cup holder and armrest.

Controls

LCD Display Unit (LDU) and Indicator Lights

Explanation of the LCD display, its modes, and the function of various indicator lights.

Controls

Mower Attachment Modes

Details the six operating modes for different mower attachments like reels, rollers, and verticut.

Controls

Operator Mode Navigation

Explains how to view system information, voltage, speed, and alarms in operator mode.

Controls

Maintenance Mode Operation

Guide to entering and using the maintenance mode for setting adjustments and configurations.

Controls

Setting Key Operating Parameters

Covers setting Switch Status, Mow Speed, Transport Speed, and Number of Reel Blades.

Controls

Maintenance Mode Flowchart

Visual guide to navigating the maintenance mode, including settings for units, reels, and resets.

Controls

Frequency of Cut (FOC)

Explanation of FOC and how to adjust it using fixed FOC or reel speed settings.

Controls

15 Blade Reel FOC Table

Table showing FOC settings based on mow speed and reel RPM for 15-blade reels.

Controls

15 Blade Reel FOC Table (Continued)

Continuation of the FOC table for 15-blade reels, detailing settings for various speeds and RPMs.

Controls

9 Blade Reel FOC Table

Table showing FOC settings based on mow speed and reel RPM for 9-blade reels.

Controls

7 Blade Reel FOC Table

Table showing FOC settings based on mow speed and reel RPM for 7-blade reels.

Controls

Electronic Traction Control System

How the traction control system regulates speed and optimizes driveability.

Automatic Parking Brake

Information on the automatic parking brake operation and engagement.

Lift System Operation

Description of the lift system operation in service and mow modes.

Operation

Daily Inspection

Daily checks to ensure the mower is in safe operating condition, including fluid levels and tire pressure.

Interlock System Functionality

Explanation and testing of the mower's interlock system to ensure safety features are active.

Operation

Operating Procedures

General guidelines and safety precautions for operating the mower, including pre-mow checks and hazard awareness.

Operation

Starting the Mower

Step-by-step instructions for starting the mower's engine, including choke and power switch usage.

Operation

Stopping and Parking Procedures

Procedures for stopping and parking the mower safely, including engaging the parking brake.

Whisper Mode Operation

Information on using the whisper mode for noise reduction, including limitations and battery impact.

Operation

Driving and Transporting the Mower

Instructions for driving and transporting the mower, including reverse operation and road compliance.

Center Reel Delay

Explanation of the center reel delay feature for accurate cutting.

Overload Protection

How the mower protects itself from motor or actuator overloads, including fault indicators.

Operation

Mowing Procedures and Best Practices

Detailed instructions and best practices for mowing, including pattern, turns, and grass catcher management.

Operation

Hillside Operation Guidelines

Safety and operational guidelines for mowing on slopes, including maximum grade and traction considerations.

Operation

Slope Calculation Methods

Methods and charts for calculating slope angles and grades using a level and tape measure.

Operation

Loading Mower onto Trailer

Procedures for loading and unloading the mower onto a trailer, including securing and tire pressure.

Operation

Towing the Mower

Instructions for safely towing the mower if it breaks down, including brake and steering chain procedures.

Operation

Daily Maintenance Checks

Daily cleaning and maintenance tasks, including cleaning reels, checking fluid levels, and steering switches.

Maintenance & Lubrication Charts

Lubrication Chart

Visual guide to lubrication points on the mower, indicating grease and oil application points.

Maintenance & Lubrication Charts

Maintenance Charts

Table detailing recommended service and lubrication intervals for various mower components.

Batteries

Battery Safety and Conditioning

Critical safety warnings for batteries and the process for conditioning new battery sets.

Batteries

Battery Conditioning Monitoring

How to monitor battery conditioning via specific gravity and charts, and factors affecting battery life.

Batteries

Battery Systems and Filling

Description of battery systems and instructions for filling batteries with distilled water.

Batteries

Battery Maintenance and Performance

Regular maintenance for optimal battery performance and life, and factors affecting it.

Batteries

Battery Charger Operation

Instructions for using the battery charger for mower and buffer batteries, including safety precautions.

Batteries

Battery Charger Algorithm

How to select and change the correct charger algorithm for different battery types.

Batteries

Cleaning Batteries

Procedure for cleaning batteries and related components, emphasizing acid neutralization.

Batteries

Specific Gravity and Voltage Tests

How to check specific gravity and end-of-charge voltage for battery diagnosis.

Batteries

Discharge Test Procedure

Procedure for testing battery serviceability via discharge, including temperature correction.

Batteries

Buffer Battery Wiring and Testing

Diagram for buffer battery wiring and guide to testing buffer battery pack condition.

Batteries

Battery Voltage Check for Failure

Identifying potentially failed batteries based on voltage differences within the pack.

Batteries

Battery Power Module Wiring

Diagrams for wiring the battery power module, including cable connections and torque specifications.

Hybrid Engine Maintenance

General Maintenance Advice

General advice for maintenance tasks, emphasizing qualified technicians and regular inspections.

Engine Operation and Break-in

Engine break-in, operation, and maintenance for gas/diesel engines, emphasizing the engine manual.

Hybrid Engine Maintenance

Engine Oil Specifications

Checking and changing engine oil for diesel and gas engines, including oil types and dipstick usage.

Gas Engine Air Filter Service

Servicing and replacing the air filter for gas engines, including cleaning procedures.

Hybrid Engine Maintenance

Diesel Air Filter Service

Instructions for cleaning and servicing the diesel air filter, emphasizing minimal removal.

Fuel Handling and Types

Fuel handling precautions and types for diesel and gasoline engines, including storage and fill level.

Fuel System Maintenance

Maintenance intervals for the fuel system, including filter replacement and bleeding procedures.

Hybrid Engine Maintenance

12 Volt Engine Battery Procedures

Installing, removing, and maintaining the 12V engine battery, including cable connections and polarity.

Jump Starting Engine Battery

Procedure for jump-starting the mower's engine battery using jumper cables.

Hybrid Engine Maintenance

Muffler and Exhaust System Maintenance

Maintenance of the muffler and exhaust system, including inspection and tightening hardware.

Radiator Maintenance (Diesel Engines)

Checking and maintaining the diesel engine's cooling system, including coolant level and anti-freeze.

Maintenance

Front Axle Fluid Check

Checking and filling the front axle fluid, distinguishing between early and later style axles.

Maintenance

Lift Actuator Calibration Procedure

Steps to calibrate the lift actuators for reels or vertical mowers for proper positioning.

Maintenance

Backlapping and Grinding Reels

Procedure for backlapping and grinding reel blades to ensure proper cutting.

Maintenance

Tire Maintenance

Maintaining proper tire inflation and inspecting tread wear for optimal performance.

Care and Cleaning Instructions

Instructions for cleaning the mower and its components, emphasizing safe practices.

Maintenance

Cutting Units Cleaning Warning

Warning about cleaning cutting units, emphasizing sharp blades and avoiding hand contact.

Maintenance

Mower Storage Procedures

Procedures for storing the mower, batteries, and engine for extended periods.

Electrical System

General Electrical System Precautions

General precautions for the electrical system, emphasizing clean connections and regular checks.

Controller Overview

Description of the various controllers in the electrical system and their functions.

Electrical System

PDU and Controller Locations

Identifies the location of PDU and controllers and their diagnostic lights.

Electrical System

RCU Controller Lights Explained

Explains the functions of the RCU controller lamps, indicating input and output circuit status.

Electrical System

MCU Controller Lights Explained

Explains the functions of the MCU controller lamps, indicating input and output signals.

Electrical System

PDU Components (Early Units)

Describes components within the PDU for early units, including contactors and circuit breakers.

Electrical System

PDU Components (Later Units)

Describes components within the PDU for later units, including contactors and circuit breakers.

Adjustments

Bedknife-to-Reel Pre-Adjustment Checks

Pre-adjustment checks for the bedknife-to-reel setup, including bearing play and sharpness.

Adjustments

Bedknife Adjustment Procedure

Steps for adjusting the bedknife gap to the reel, ensuring proper contact and clearance.

Cutting Height Adjustment

How to set the cutting height of the mower using the gauge and adjuster screw.

Adjustments

Reel Assembly Instructions

Instructions for assembling the reel motor, coupler, and related components.

Adjustments

Reel Bearing Checks and Adjustments

Checking and adjusting reel bearings for play, and applying grease.

Reel Stabilizer Rod Adjustments

Adjusting reel stabilizer rods for proper reel leveling when raising or lowering.

Adjustments

Bedknife Adjuster Spring and Tension

Adjusting the bedknife adjuster spring compression and tension.

Grinding the Bedknife

Procedure for grinding the bedknife without complete removal, including reassembly checks.

Steering Chain Tension Adjustment

Adjusting the tension on the steering chain for proper steering motor function.

Adjustments

Armrest Height and Pivot Adjustments

Adjusting the height and pivot tension of the operator's armrest for comfort.

Grass Catcher Yoke Adjustment

Adjusting the grass catcher yoke for proper fit on the reel crossbar.

Adjustments

Hood Stop and Lift Stop Adjustments

Adjusting the hood stop bumpers and lift stops for proper alignment and operation.

Adjustments

Diesel Engine Alternator Belt Adjustment

Inspecting and adjusting the diesel engine alternator belt tension.

Traction Pedal Adjustment

Checking and adjusting the traction pedal for correct speed and voltage readings.

Adjustments

Steering Proximity Switches Adjustment

Adjusting steering proximity switches on 2WD models for proper flush alignment.

Steering Sensor Adjustment (3 WD Units)

Adjusting steering sensor on 3WD units for correct air gap between sensor components.

Diesel Throttle Actuator Adjustment

Adjusting the diesel throttle actuator to ensure correct low idle and full throttle positions.

Adjustments

Gas Throttle Actuator Adjustment

Adjusting the gas throttle actuator to ensure correct low idle and full throttle positions.

Adjustments

Torque Specifications

General torque specifications for fasteners, including American National Standard and Metric.

Specific Torque Values

Specific torque values for critical components like axle shafts, lug nuts, and battery posts.

LDU Error Codes

General Information on LDU Error Codes

Introduction to LDU error codes, how they display, and the importance of recording them.

System Error Codes

Lists system-level error messages, their descriptions, and the effect on machine functions.

LDU Error Codes

Reel Control Unit Error Codes

Error codes related to the reel control unit, including motor temperature and short circuits.

LDU Error Codes

Reel Control Unit Error Codes (Continued)

Continued reel control unit error codes, covering motor overcurrent and voltage low faults.

LDU Error Codes

Reel Control Unit Error Codes (Continued)

Continued reel control unit error codes, covering actuator overcurrent and fault conditions.

LDU Error Codes

Traction & Steering Controller Error Codes

Error codes for traction and steering controllers, including short circuits and bus voltage issues.

LDU Error Codes

Traction & Steering Controller Error Codes (Continued)

Continued traction and steering controller error codes, covering voltage limits and temperature faults.

LDU Error Codes

Traction & Steering Controller Error Codes (Continued)

Continued traction and steering controller error codes, covering supply voltage and offset errors.

LDU Error Codes

Traction & Steering Controller Error Codes (Continued)

Continued traction and steering controller error codes, covering sensor feedback and switch synchronization.

LDU Error Codes

Traction & Steering Controller Error Codes (Continued)

Continued traction and steering controller error codes, covering sensor errors and CAN communication.

LDU Error Codes

Over-Voltage Limit Controller Error Codes

Error codes for the over-voltage limit controller, indicating issues with resistor circuits.

LDU Error Codes

Over-Voltage Limit Controller Error Codes (Continued)

Continued OLM error codes, indicating issues with resistor current and connections.

LDU Error Codes

Hybrid Engine Controller Error Codes

Error codes for the hybrid engine controller, related to pack voltage and generator temperature.

LDU Error Codes

Hybrid Engine Controller Error Codes (Continued)

Continued hybrid engine controller error codes, covering generator temperature and current sense faults.

Troubleshooting

General Troubleshooting Guide

General troubleshooting guide for common problems, covering power, engine start, and communication issues.

Troubleshooting

Troubleshooting Engine and Traction Issues

Troubleshooting for engine start problems, no traction movement, and CAN communication.

Troubleshooting

Troubleshooting Steering and Other Issues

Troubleshooting for steering problems, actuator modes, reel motors, and headlights.

Quality of Cut

Quality of Cut Troubleshooting Steps

Steps to diagnose and troubleshoot cutting quality issues, including speed, bearings, and sharpness.

Washboarding Diagnosis and Remedy

Identifying and remedying washboarding in the cut, often caused by rocking motion.

Quality of Cut

Marcelling Diagnosis and Remedy

Identifying and remedying marcelling in the cut, a wave-like appearance caused by varying heights.

Quality of Cut

Step Cutting Diagnosis and Remedy

Identifying and remedying step cutting issues, usually caused by mechanical wear or HOC adjustment.

Quality of Cut

Scalping Diagnosis and Remedy

Identifying and remedying scalping in the cut, often caused by low height-of-cut settings.

Quality of Cut

Stragglers Diagnosis and Remedy

Identifying and remedying stragglers (uncut grass) in the cut, related to bedknife adjustment.

Quality of Cut

Streaks Diagnosis and Remedy

Identifying and remedying streaks in the cut, usually caused by a nicked or bent bedknife.

Quality of Cut

Windrowing Diagnosis and Remedy

Identifying and remedying windrowing of clippings, concentrated at one end of cutting units.

Quality of Cut

Rifling or Tramlining

Identifying and remedying rifling or tramlining, a pattern of varying cutting heights.

Mismatched Cutting Units

Identifying and remedying mismatched cutting units, resulting in a stepped cut appearance.

Related product manuals

Jacobsen TR3 EJ Series

186 pages

Jacobsen Kubota D1105-E4B

110 pages

LF 3400, Kubota V1305-E, 5 Gang, 2WD

142 pages

67945 – LF 3400, Kubota V1305-E, 5 Gang, 2WD

Jacobsen Greens King IV

108 pages

Jacobsen Tri King 1900 Series

30 pages

Table of Contents

Other manuals for Jacobsen Eclipse 322

Questions and Answers:

Jacobsen Eclipse 322 Specifications

Summary

Batteries

Battery Safety

Hybrid Engine Maintenance

Engine

Engine Oil

Safety

How to Operate Safely

ROPS

Safe Handling of Fuels

Safety

When You Put the Mower on a Trailer

Safety

Maintenance and Storage

Safety

Important Safety Notes

Specifications

Product Identification

Hybrid Engines

Specifications

Hybrid Batteries

Specifications

Battery Power Module

Cutting Units

Specifications

Declaration of Conformity

Specifications

Technical Specifications Overview

Specifications

Declaration Compliance Details

Specifications

Vibration Level

Specifications

Weights and Dimensions

Accessories & Support Literature

Decals

Decal Identification

Decals

Safety Decals and Warnings

Decals

Specific Decal Warnings

Decals

Towing Decal

Service Information

Fluid Capacities

Recommended Service and Lubrication Intervals

Service Information

Recommended Service and Lubrication Intervals

Controls

Icons

Controls

Instrument Panel

Controls

Operator Controls

Controls

Operator Convenience Features

Controls

LCD Display Unit (LDU) and Indicator Lights

Controls

Mower Attachment Modes

Controls

Operator Mode Navigation

Controls

Maintenance Mode Operation

Controls

Setting Key Operating Parameters

Controls

Maintenance Mode Flowchart

Controls

Frequency of Cut (FOC)

Controls

15 Blade Reel FOC Table

Controls

15 Blade Reel FOC Table (Continued)

Controls