Exmark NAVIGATOR 4500-367 User Manual (English)

Questions and Answers:

C
Charles RogersJul 28, 2025
Why won't my Exmark NAVIGATOR 4500-367 engine start?
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  Daniel OsbornJul 29, 2025
  Your Exmark Lawn Mower might not start due to several reasons. It could be as simple as an empty fuel tank, so ensure that the fuel tank is full. Check that the fuel shutoff valve is open. If the oil level in the crankcase is low, add oil. Also, make sure the throttle and choke are correctly positioned: the throttle should be midway between “SLOW” and “FAST,” and the choke should be “ON” for a cold engine or “OFF” for a warm one. Other potential causes include a dirty fuel filter (replace it), a dirty air cleaner (clean or replace the element), corroded or loose electrical connections (check and clean them), a faulty spark plug (clean, adjust, or replace it), or a disconnected spark plug wire (check the connection).
J
John SmithAug 2, 2025
How to fix Exmark NAVIGATOR 4500-367 Lawn Mower when starter does not crank?
- R
  Raymond BradfordAug 2, 2025
  If the starter on your Exmark Lawn Mower isn't cranking, several issues could be the cause. First, ensure the PTO is disengaged and the parking brake is set. Also, confirm that the speed control lever is in the neutral position. A low battery charge can also prevent cranking, so charge the battery. Check for corroded, loose, or faulty electrical connections, cleaning and reconnecting them as necessary. Finally, inspect the fuse and replace it if it's blown.
C
Christian ScottAug 6, 2025
What to do if Exmark NAVIGATOR 4500-367 Lawn Mower engine loses power?
- D
  Dawn DanielsAug 6, 2025
  If your Exmark Lawn Mower engine is losing power, consider these possible causes: The engine load might be excessive, so reduce the ground speed. A dirty air cleaner can also cause power loss; clean or replace the air cleaner element. Check the oil level in the crankcase and add oil if it's low. Make sure the cooling fins and air passages for the engine are free of obstructions. The vent hole in the fuel cap could be plugged, so clean or replace the fuel cap. Also, a dirty fuel filter can restrict fuel flow, so replace the fuel filter.
C
Charlene StoneAug 10, 2025
Why is my Exmark NAVIGATOR 4500-367 Lawn Mower engine overheating?
- K
  Kenneth StevensAug 10, 2025
  An Exmark Lawn Mower engine might overheat due to several reasons: the engine load could be excessive, so reduce the ground speed. Check the oil level in the crankcase and add oil if it's low. Also, ensure that the cooling fins and air passages for the engine are not blocked; remove any obstructions.
B
Brady DavilaAug 14, 2025
What to do if Exmark NAVIGATOR 4500-367 Lawn Mower does not drive?
- C
  Clarence ReevesAug 14, 2025
  If your Exmark Lawn Mower isn't driving, check these potential issues: ensure the bypass valve is tightly closed. Inspect the drive or pump belt for wear, looseness, or breakage, and replace the belt if necessary. Also, check if the drive or pump belt has come off a pulley, and replace the belt. Look for a broken or missing idler spring and replace it. Finally, verify that the hydraulic fluid level is adequate and not too hot; add hydraulic fluid to the reservoir or allow it to cool down.
J
Joshua MoralesAug 19, 2025
How to stop my Exmark NAVIGATOR 4500-367 Lawn Mower from pulling to one side?
- S
  Samuel WilsonSep 12, 2025
  If your Exmark Lawn Mower pulls to the left or right even when the levers are fully forward, you may need to adjust the tracking. Also, ensure the tire pressure in the drive tires is correct. Another potential solution is to adjust the reverse indicator and the speed control linkage.
J
Julia NormanAug 23, 2025
Why is my Exmark NAVIGATOR 4500-367 Lawn Mower vibrating abnormally?
- T
  Tony BishopAug 23, 2025
  Abnormal vibration in your Exmark Lawn Mower could stem from a few causes: Check if the engine mounting bolts are loose and tighten them. Inspect the engine pulley, idler pulley, or blade pulley for looseness and tighten the appropriate pulley. Also, inspect the belt and install a new one if it's damaged.

Exmark NAVIGATOR 4500-367 Specifications

General

Category	Lawn Mower
Manufacturer	Exmark
Model	NAVIGATOR 4500-367
Engine	Kohler Command Pro CH730
Transmission	Hydrostatic
Cutting Width	36 in (91 cm)
Fuel Capacity	12.0 U.S. gal (45.4 L)
Weight	1430 lbs (649 kg)

Summary

Introduction

Manual Overview

Describes the manual's content covering operation, maintenance, and safety.

Model and Serial Number Location

Identifies the location of the model and serial numbers on the product.

Safety

Safety Alert Symbol Explanation

Explains the meaning and use of the safety alert symbol.

Safe Operating Practices

Covers training, preparation, and general safety advice for operation.

Noise Exposure Warning

Warns about potential hearing loss from prolonged exposure to machine noise.

Fuel Handling Safety

Provides critical safety guidelines for handling gasoline and preventing fires.

Carbon Monoxide Warning

Alerts to the danger of carbon monoxide poisoning from exhaust fumes.

Front Mount Attachment Safety

Advises on safety when operating without a specific Exmark front mount attachment.

General Operation Safety

Highlights dangers related to hot engine parts, exhaust gases, and ensuring proper operation.

Slope Operation Safety

Provides critical safety guidelines for mowing on slopes and near hazards.

Maintenance and Storage Safety

Details essential safety precautions before and during maintenance and storage.

Safety and Instructional Decals

Explains the importance and application of safety decals on the machine.

Maintenance and Storage

General Maintenance Precautions

Outlines essential steps before starting any maintenance or adjustment.

Hydraulic System Safety

Warns about the dangers of high-pressure hydraulic fluid and how to handle leaks.

Specifications

Model Numbers

Lists the available model numbers for the unit.

Systems Specifications

Details specifications for the engine, fuel, and electrical systems.

Operator Controls

Describes the function and location of steering, speed, PTO, and brake controls.

Seat Specifications

Details the type, mounting, and safety features of the operator's seat.

Hydrostatic Ground Drive System

Specifies pumps, motors, oil type, and capacity for the drive system.

Tires and Wheels Specifications

Details specifications for drive, front caster, and rear caster tires.

Dimensions

Provides overall width, length, height, tread, and wheel base measurements.

Cutting Deck Specifications

Lists model numbers, cutting width, blade size, and deck drive details.

Product Overview

Curb Weight

Lists the curb weight for different deck sizes.

Torque Requirements

Details torque specifications for various bolts and nuts on the machine.

Operation

Controls Overview

Describes the location and function of key operating controls like steering, speed, choke, throttle, brake, ignition, etc.

Engine Oil Indicator

Explains the engine oil temperature light and buzzer warning system.

Pre-Start Checks

Outlines essential checks and preparations before starting the engine.

Operating Instructions

Details procedures for opening fuel valve and starting the engine.

Engaging and Disengaging the PTO

Provides step-by-step instructions for operating the PTO system.

Stopping the Engine

Details the procedure for safely shutting down the engine.

Driving the Machine

Explains how to drive the machine forward, in reverse, and turn safely.

Emptying and Clearing the Hopper

Guides on how to empty the hopper and clear the screen.

Transporting

Transporting a Unit

Details how to safely load and secure the machine for transport on a trailer or truck.

Loading a Unit onto a Trailer

Provides specific instructions and safety warnings for loading the machine onto a trailer or truck.

Maintenance

Maintenance Safety Precautions

Highlights safety warnings and procedures before performing maintenance or adjustments.

Recommended Maintenance Schedule

Provides a schedule of maintenance tasks based on operating hours.

Periodic Maintenance

Check Engine Oil Level

Details how to check and fill the engine oil level.

Check Battery Charge

Explains how to check and maintain battery charge.

Check Safety Interlock System

Details how to test the safety interlock system.

Check for Loose Hardware

Guides on inspecting and tightening hardware.

Service Air Cleaner

Provides instructions for servicing the air cleaner.

Change Engine Oil

Details the procedure for changing the engine oil.

Check Hydraulic Oil Level

Details how to check and fill the hydraulic oil level.

Check Tire Pressures

Explains how to check and inflate tire pressures.

Check Condition Of Belts

Guides on inspecting drive belts for wear and damage.

Lubricate Grease Fittings

Details lubrication of grease fittings and refers to a chart.

Lubricate Rear Caster Wheel Hubs

Provides step-by-step instructions for lubricating rear caster wheel hubs.

Lubricate Brake Handle Pivot

Details lubrication of the brake handle pivot.

Lubricate Brake Rod Bushings

Explains how to lubricate brake rod bushings.

Lubricate Steering Linkage Rod Ends

Guides on lubricating steering linkage rod ends.

Lubricate Hopper Actuator

Details lubrication of the hopper actuator.

Check Spark Plugs

Explains how to check and replace spark plugs.

Change Fuel Filter

Provides instructions for changing the fuel filter.

Change Hydraulic System Filter

Details how to change the hydraulic system filter.

Check Wheel Hub Locknuts

Details checking and torquing wheel hub locknuts.

Check Wheel Lug Nuts

Details checking and torquing wheel lug nuts.

Fuel Tank Mounting Hardware

Provides specifications for fuel tank mounting hardware.

Thread Locking Adhesives

Lists common thread locking adhesives used on fasteners.

Dielectric Grease Usage

Explains the use of dielectric grease on electrical connections.

Adjustments

Drive Belt Tension

States that PTO and pump drive belt tensions are self-adjusting.

PTO Belt Replacement

Provides steps for replacing PTO belts.

Belt Guide Adjustment

Details how to adjust belt guides for proper alignment.

Pump Drive Belt Replacement

Provides steps for replacing the pump drive belt.

Adjust Safety Switch

Details how to adjust safety switches for proper plunger extension.

Brake Adjustment

Guides on checking and adjusting the brake system.

Adjust Speed Control Lever Tension

Explains how to adjust the tension of the speed control lever.

Speed Control Linkage Adjustment

Details how to adjust the speed control linkage.

Steering Lever Adjustment

Guides on adjusting steering levers for proper alignment.

Tracking Adjustment

Refers to Motion Control Linkage Adjustment for tracking adjustments.

PTO Drive Pulley Alignment

Details when and how to align PTO drive pulleys.

Pump Drive Pulley Alignment

Details when and how to align pump drive pulleys.

Rear Caster Pivot Bearing Pre-Load Adjustment

Details how to adjust the pre-load on rear caster pivot bearings.

Hopper Door Adjustment

Guides on adjusting the hopper door for proper closing.

PTO Brake Spring Adjustment

Explains when and how to adjust the PTO brake spring.

Cleaning

Clean Engine and Exhaust System Area

Details cleaning the engine and exhaust system area.

Remove Engine Shrouds and Clean Cooling Fins

Guides on removing shrouds and cleaning cooling fins.

Clean Debris From Machine

Details cleaning general debris from the machine.

Waste Disposal

Covers proper disposal methods for motor oil and batteries.

Troubleshooting

General Troubleshooting Guide

Provides a table of common problems, causes, and corrective actions.

Schematics

Electrical Diagram

Presents the electrical diagram of the machine's wiring.

Electrical Logic Schematic

Shows the logic of the machine's electrical system.

Hydraulic Diagram

Illustrates the hydraulic system of the machine.

Exmark Commercial Turf Equipment 2 Year Limited Warranty

Conditions and Products Covered

Outlines the conditions and products covered by the warranty.

Warranty Exceptions

Lists items not covered or covered under different terms.

Items and Conditions Not Covered

Details specific items and conditions excluded from the warranty.

Instructions for Obtaining Warranty Service

Provides steps on how to obtain warranty service.

Owner's Responsibilities

Lists the owner's responsibilities under the warranty.

General Conditions

Outlines general terms and conditions of the warranty.

Accessories and Options

Mid-Mount Riding Accessories

Lists available accessories and options for mid-mount riding units.

Out-Front Riding Accessories

Lists available accessories and options for out-front riding units.

Walk-Behind Accessories

Lists available accessories and options for walk-behind units.

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