Jacobsen Greens King IV Plus Service Manual (English)

Other manuals for Jacobsen Greens King IV Plus

Parts And Maintenance Manual102 pages

Operation Manual60 pages

Safety, Operation & Maintenance Manual54 pages

Safety & Operation Manual32 pages

Service Manual110 pages

Safety, Operation And Maintenance Manual118 pages

Questions and Answers:

D
dchavezAug 13, 2025
Why won't my Jacobsen Greens King IV Plus Lawn Mower engine start?
- O
  owilsonAug 13, 2025
  Your Jacobsen Lawn Mower engine might not start due to several reasons: * The parking brake may be disengaged, the traction lever might not be in Neutral, or the reel lever(s) could be on. Check the interlock system and start-up procedure. * The battery could be low on charge or defective. Inspect the condition of the battery and its connections. * The fuel tank might be empty or contain dirty fuel, or the fuel shut-off valve could be closed. Refill with fresh fuel, change the fuel filter, bleed the fuel lines, and open the fuel shut-off valve. * A fuse may be blown. Replace the fuse.
R
Robert FitzgeraldAug 16, 2025
What to do if my Jacobsen Lawn Mower engine is overheating?
- D
  Devon GrayAug 17, 2025
  If your Jacobsen Lawn Mower engine is overheating, consider the following: * The coolant level may be low. Inspect and add coolant. * The air intake could be restricted. Clean the cooling air intake. * The water pump belt might be broken or loose. Tighten or replace the belt. * The engine may be overloaded. Try reducing the forward speed.
A
Amanda Jarvis DDSAug 20, 2025
How to fix a Jacobsen Lawn Mower engine that is hard to start or runs poorly?
- S
  Shannon WardAug 20, 2025
  If your Jacobsen Lawn Mower engine is hard to start or runs poorly, it could be due to: * Low fuel level or dirty fuel/fuel filter. Fill the tank with fresh fuel, change the fuel filter, and bleed the fuel lines. * A dirty air cleaner. Inspect and replace the air filter. * Issues with the injectors or fuel pump. Consult the engine manual for further assistance. * A general engine problem. Consult the engine manual.
K
Kim RussellAug 25, 2025
Why does my Jacobsen Lawn Mower engine keep stopping?
- R
  Renee RogersAug 25, 2025
  Your Jacobsen Lawn Mower engine might be stopping because: * The fuel tank is empty. Fill it with fresh fuel and bleed the fuel lines. * The interlocks were not set before you left the operator’s seat. Engage the parking brake, set the reel levers to OFF, and set the traction lever to Neutral before leaving the seat.
H
hillnicholasAug 28, 2025
Why is my Jacobsen Lawn Mower battery not holding a charge?
- T
  taylor08Aug 28, 2025
  If your Jacobsen Lawn Mower battery isn't holding a charge, check these: 1. Loose or corroded battery terminals. Inspect and clean the terminals. 2. Low electrolyte level. Refill to the correct level. 3. Alternator belt loose or broken. Tighten or replace the belt. 4. A defective charging system. See the engine manual for further guidance.
D
Dakota MillsSep 1, 2025
What to do if my Jacobsen Greens King IV Plus does not react to the traction pedal?
- I
  Isaiah CampbellSep 1, 2025
  If your Jacobsen Lawn Mower isn't reacting to the traction pedal, check the following: * The parking brake might be engaged. Disengage the parking brake. * The traction lever could be in Neutral. Place the lever in the desired speed or direction. * The hydraulic oil level may be low. Check the reservoir level and fill if needed.
D
Donald CortezSep 4, 2025
How to fix uneven cutting with my Jacobsen Greens King IV Plus reels?
- D
  Devin DavisSep 4, 2025
  Uneven cutting with your Jacobsen Lawn Mower reels can occur due to: * Incorrect bedknife-to-reel adjustment. Inspect the bedknife-to-reel adjustment. * Engine speed being too low. Check the engine speed and run the engine at full throttle. * The reel control lever being set in reverse. Set the reel lever to forward rotation. * Low hydraulic oil. Check the reservoir level and fill if needed.
L
Laura HernandezSep 8, 2025
What causes the gauges/indicators to stop operating on my Jacobsen Greens King IV Plus?
- B
  Brett RiceSep 8, 2025
  If the gauges or indicators on your Jacobsen Lawn Mower are not operating, it could be due to: * A blown fuse or burnt-out bulb. Replace the fuse and check the bulb. * Loose wiring. Check the electrical connections.

Jacobsen Greens King IV Plus Specifications

General

Brand	Jacobsen
Model	Greens King IV Plus
Category	Lawn Mower
Language	English

Summary

1 Safety

1.1 Operating Safety

General guidelines for safe operation and operator awareness.

1.2 Important Safety Notes

Critical safety warnings and precautions for equipment use.

2 Specifications

2.1 Product Identification

Details on product models, serial numbers, and identification plates.

2.2 Engine

Specifications for gasoline and diesel engines used in the equipment.

2.3 Cutting Units

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

2.4 Tractor

Details on tires, battery, brakes, speed, and hydraulic systems.

2.5 Weights and Dimensions

Physical dimensions and weight specifications of the equipment.

2.6 Accessories & Support Literature

Information on available accessories and support literature for the machine.

3 Adjustments

3.1 General

General precautions and guidelines for performing adjustments and maintenance.

3.2 Bedknife-to-Reel (Pre-adjustment Check)

Procedure for checking reel and bedknife alignment before adjustment.

3.3 Bedknife Adjustment

Detailed steps for adjusting the bedknife to reel gap for optimal cutting.

3.4 Cutting Height

Procedure for setting the desired cutting height of the mower unit.

3.5 Antisway Spring

Instructions for adjusting the antisway spring for proper operation.

3.6 Accelerator Pedal

Procedure for setting the correct distance for the accelerator pedal.

3.7 Brake Pedal

Steps for adjusting the brake pedal for proper stopping and alignment.

3.8 Parking Brake

Procedure to adjust the parking brake mechanism for proper engagement.

3.9 Interlock Switches

Checking and adjusting interlock switches for safety system functionality.

3.10 Traction Lever

Adjusting the traction lever for proper alignment and engagement with controls.

3.11 Choke Control

Procedure for adjusting the choke control for gasoline engines.

3.12 Reel Control

Adjusting the reel control linkage for proper reel disengagement.

3.13 Reel Switches

Checking and verifying the function of reel switches for safety interlocks.

3.14 Steering Wheel (GK IV Units Only)

Procedure for adjusting the steering wheel for straight tractor alignment.

3.15 Leveling Procedure

Steps for leveling the mower implements using the torsion spring.

3.16 Reel Bearing

Checking and adjusting reel bearings for proper function and wear.

3.17 Fan Belt (Diesel Engines)

Procedure for inspecting and adjusting the fan belt on diesel engines.

3.18 Lift Cylinders

Adjusting the front and rear lift cylinders for proper spacing and arm contact.

3.19 Specific Torque Requirements

List of specific torque values for various fasteners and components.

3.20 Torque Specification

Comprehensive charts for torque specifications on standard and metric fasteners.

4 Maintenance

4.1 General

General guidelines for maintaining the equipment, including cleaning and part replacement.

4.2 Engine

Important information and break-in procedures for both diesel and gasoline engines.

4.3 Engine Oil

Details on checking and changing engine oil for diesel and gasoline engines.

4.4 Gas Engine Air Filter

Procedure for servicing the foam pre-cleaner and replacing the air filter cartridge.

4.5 Diesel Air Filter

Instructions for checking and replacing the diesel engine air filter element.

4.6 Fuel

Guidelines for safe fuel handling, storage, and recommendations for diesel and gasoline.

4.7 Fuel System

Maintenance intervals for the fuel system and bleeding procedures for diesel engines.

4.8 Battery

Precautions and procedures for servicing and handling the tractor battery.

4.9 Jump Starting

Step-by-step guide on how to safely jump-start the tractor's battery.

4.10 Charging Battery

Instructions for safely charging the tractor's battery, including precautions.

4.11 Hydraulic Hoses

Guidelines for inspecting, disconnecting, and replacing hydraulic hoses and tubes.

4.12 Hydraulic Oil

Procedure for draining, replacing, and checking hydraulic oil levels.

4.13 Hydraulic Oil Filters

Instructions for replacing the hydraulic oil filter to protect the system.

4.14 Electrical System

General precautions and checks for maintaining the electrical system and interlocks.

4.15 Muffler and Exhaust

Inspection and maintenance of the muffler and exhaust system for safety and performance.

4.16 Tires

Recommendations for maintaining proper tire inflation and inspecting tread wear.

4.17 Wheel Mounting Procedure

Steps for correctly mounting and torquing the wheels onto the hubs.

4.18 Care and Cleaning

Guidelines for washing, cleaning, and protecting the tractor and its components.

4.19 Radiator (Diesel Engines)

Procedure for checking coolant, cleaning fins, and maintaining the radiator.

4.20 Backlapping

Detailed instructions for performing backlapping to restore reel cutting edges.

4.21 Storage

Procedures for preparing the machine for storage, including engine, battery, and cutting units.

5 Troubleshooting

5.1 General

A chart listing common problems, possible causes, and recommended actions for troubleshooting.

6 Maintenance & Lubrication Charts

6.1 General

General guidelines for lubrication, including cleaning fittings and using proper lubricants.

6.2 Lubrication Chart

Diagram showing lubrication points and components on the machine.

6.3 Maintenance Charts

Recommended service and lubrication intervals for various components and systems.

8 Parts Catalog

1.1 Decals

Diagram and part numbers for various decals applied to the machine.

2.1 Control Panel Decals

Decals related to the control panel functions and warnings.

3.1 Fenders and Front Cowling

Exploded view and part list for fenders and front cowling assembly.

4.1 Floorboard and Steering Tower

Diagram and part list for the floorboard and steering tower assembly.

5.1 Instrument Panel

Exploded view and part list for the instrument panel components.

6.1 Throttle Plate

Diagram and part list for the throttle plate assembly on gas units.

7.1 Throttle Plate

Diagram and part list for the throttle plate assembly on diesel units.

8.1 Upper Control Linkage

Exploded view and part list for the upper control linkage components.

9.1 Lower Control Linkage

Exploded view and part list for the lower control linkage assembly.

10.1 Pedal Linkage

Diagram and part list for the pedal linkage assembly.

11.1 Wheel Motors and Brakes

Exploded view and part list for wheel motors and brake components.

12.1 Frame

Diagram and part list for the main frame structure of the tractor.

13.1 Rear Frame

Exploded view and part list for the rear frame assembly.

14.1 Electrical Routing

Diagram showing the routing of electrical wiring harnesses and components.

15.1 Seat

Exploded view and part list for the operator's seat assembly.

16.1 Gas Fuel Tank

Diagram and part list for the gasoline fuel tank and related components.

17.1 Diesel Fuel Tank

Exploded view and part list for the diesel fuel tank and related components.

20.1 Steering Valve and Cylinder

Diagram and part list for the steering valve and cylinder assembly.

19.1 Manual Steering

Exploded view and part list for the manual steering system components.

35.1 Hydraulic Schematic

Schematic diagram of the hydraulic system for Greens King IV models.

36.1 Hydraulic Schematic

Schematic diagram of the hydraulic system for Greens King IV Plus models.

37.1 Reel Cutting Assembly

Exploded view and part list for the reel cutting assembly, including bedknife service.

38.1 Reel Roller, Shields and Catcher

Diagram and part list for reel rollers, shields, and grass catcher.

39.1 Gear Pump

Exploded view and part list for the 4-section and 5-section gear pumps.

24.1 Diesel Engine Mounting

Diagram and part list for mounting the diesel engine to the tractor frame.

25.1 Diesel Engine

Exploded view and part list for the diesel engine components.

42.1 Hydraulic Motor

Exploded view and part list for the hydraulic motor assembly.

43.1 O-Ring Seal Chart

Chart detailing O-ring sizes, thread sizes, and corresponding part numbers.

27.1 Center Lift Arm

Diagram and part list for the center lift arm assembly.

28.1 Center Lift Arm

Exploded view and part list for the center lift arm assembly.

29.1 Clamps

Diagram showing various clamps and their locations on the hydraulic system.

30.1 Reel Hydraulics

Diagram and part list for the reel hydraulic system components.

31.1 Traction and Lift Hydraulics

Diagram showing parts for traction and lift hydraulic systems.

32.1 Pump Hydraulics

Diagram and part list for the hydraulic pump system components.

33.1 Gas Electrical Schematic

Electrical schematic for gas engine units showing wiring and components.

34.1 Diesel Electrical Schematic

Electrical schematic for diesel engine units showing wiring and components.

35.1 Hydraulic Schematic

Schematic diagram of the hydraulic system for Greens King IV models.

36.1 Hydraulic Schematic

Schematic diagram of the hydraulic system for Greens King IV Plus models.

37.1 Reel Cutting Assembly

Exploded view and part list for the reel cutting assembly, including bedknife service.

38.1 Reel Roller, Shields and Catcher

Diagram and part list for reel rollers, shields, and grass catcher.

39.1 Gear Pump

Exploded view and part list for the 4-section and 5-section gear pumps.

40.1 5 Spool Valve

Diagram and part list for the 5-spool valve assembly.

41.1 Steering Unit

Exploded view and part list for the steering unit assembly.

42.1 Hydraulic Motor

Exploded view and part list for the hydraulic motor assembly.

43.1 O-Ring Seal Chart

Chart detailing O-ring sizes, thread sizes, and corresponding part numbers.

Fluids and Compounds

Hydraulic Fluid*

Information on various hydraulic fluids, including biodegradable options.

2-Cycle Oil

Details on 2-cycle oil containers available.

Grease

Information on OO-Grease containers available.

Paint

Available paint colors and sizes for touch-up and protection.

Lapping Compound

Available lapping compounds in different grits and container sizes.

Specialty Compound

Specialty compounds like insulating gel and multi-lube.

Biodegradable Hydraulic Fluid*

Biodegradable hydraulic fluids and grease options for environmental care.

O-Ring Kit

Available O-ring kits for various sealing applications.

Fuel Cans

Available plastic fuel cans in different capacities.

Right Start Kit for New Machines

Information on the Right Start Kit for new machine initial setup.

On-Time Maintenance Kit

Information on the On-Time Maintenance Kit for regular servicing.

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