Gravely 42 ZT XL - User Manual

Questions and Answers

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Michael MedinaAug 15, 2025
Why my Gravely Lawn Mower engine will not crank/start?
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  Laura MullinsAug 15, 2025
  If your Gravely Lawn Mower engine won't crank or start, several factors could be at play. First, make sure the safety interlock system is properly engaged and not faulty. Next, ensure the fuel tanks are filled. A discharged battery could also be the culprit, so try charging it. Check for poor connections between the battery and cables, tightening or cleaning them as necessary. Inspect the spark plug wires and plugs, connecting any loose wires or replacing faulty plugs. If these steps don't resolve the issue, there may be a fault in the electrical system or the engine itself, and you should contact your Gravely Dealer.
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Robert RyanAug 18, 2025
What to do if PTO or mower blades do not engage or shuts off on my Gravely 42 ZT XL?
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  Heather SchwartzAug 18, 2025
  If the PTO or mower blades on your Gravely Lawn Mower won't engage or shut off, it could be due to several reasons. Ensure the operator presence switch is depressed by sitting on the seat. A loose or disconnected electric clutch connector can also cause this issue; check and connect it. Additionally, inspect the PTO belt for faults and replace if necessary. If these steps don't resolve the issue, the operator presence switch, PTO switch, wires, connectors, or clutch may be faulty, and you should contact your Gravely Dealer.
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Nicole JonesAug 21, 2025
What to do if my Gravely 42 ZT XL Lawn Mower does not move with engine running when using steering levers?
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  Natalie LinAug 21, 2025
  If your Gravely Lawn Mower doesn't move when using the steering levers while the engine is running, first check if the transmission bypass lever is engaged and disengage it. If that's not the issue, the hydrostatic belt might be faulty and needs replacement. If problems persist, the transmission itself may be faulty, and you should contact your Gravely Dealer.
C
Chris WagnerAug 25, 2025
What to do if my Gravely 42 ZT XL moves with engine off and parking brake engaged?
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  Andre WalshAug 25, 2025
  If your Gravely Lawn Mower moves with the engine off and the parking brake engaged, the parking brake likely needs adjustment or is faulty. Contact your Gravely Dealer for assistance.
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Regina HansenAug 27, 2025
How to fix a Gravely 42 ZT XL Lawn Mower when the engine runs rough?
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  Alisha SmithAug 27, 2025
  If your Gravely Lawn Mower engine is running rough, try disengaging the choke. Also, the air filter cartridge might be plugged, so clean or replace it. If the problem persists, the engine may be faulty, and you should contact your Gravely Dealer.
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Michelle HollowayAug 30, 2025
What causes a Gravely 42 ZT XL engine to overheat?
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  ulewisAug 30, 2025
  If your Gravely Lawn Mower engine overheats, first check the engine oil level and add oil if it's low. Also, the cooling system might be plugged, so clean it. If the issue continues, the engine itself may be faulty, and you should contact your Gravely Dealer.
C
Christy RobertsSep 2, 2025
How to improve the cutting quality of my Gravely 42 ZT XL?
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  hvaldezSep 2, 2025
  If you notice poor cutting quality with your Gravely Lawn Mower, it might be due to the mower deck not being level or the mower pitch being incorrect; level and adjust it accordingly. Also, check if the mower blades are dull or faulty; sharpen or replace them as needed.
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megan65Sep 5, 2025
Why my Gravely 42 ZT XL Lawn Mower does not travel in a straight line?
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  Danielle YuSep 6, 2025
  If your Gravely Lawn Mower isn't traveling in a straight line, start by checking the tire pressure. Also, the steering levers may need adjustment. If the problem persists, the hydrostatic transmission and/or linkage may need adjustment, and you should contact your Gravely Dealer.
D
danielle74Sep 8, 2025
Why my Gravely Lawn Mower creeps with steering levers in neutral position?
- E
  Eric GarciaSep 8, 2025
  If your Gravely Lawn Mower creeps with the steering levers in the neutral position, the hydrostatic transmission and/or linkage likely needs adjustment. Contact your Gravely Dealer for assistance.
B
Brandon McdonaldSep 12, 2025
Why does the hour meter continue when engine not running on my Gravely Lawn Mower?
- M
  Miss Christy HubbardSep 12, 2025
  If the hour meter on your Gravely Lawn Mower continues to run when the engine is off, it's likely because the ignition key is in the run position. Turn the ignition key to the off position to resolve this.

Summary

Introduction to Gravely ZT XL

Non-English Manuals Information

Information on obtaining manuals in languages other than English.

The Manual Overview

Guidance on reading the manual for understanding operation and maintenance.

Delivery and Product Preparation

Product Registration and Part Warnings

Process for product registration and warnings about unauthorized replacement parts.

Safety Alerts and Symbols

Understanding Safety Alerts

Explains safety alert symbols and their meanings for hazard identification.

Safety Decals and Locations

Information on identifying and understanding safety decals on the unit.

Critical Safety Warnings

DANGER and CAUTION Scenarios

Details specific DANGER and CAUTION hazards and their consequences.

Operational Hazard Warnings

Discharge and Tipping Hazards

Warnings related to discharge hazards and tipping on slopes.

Hazard Warnings and Precautions

Service, Bystander, and Traction Hazards

Warnings concerning service, bystanders, and loss of traction.

General Safety Rules and Emissions

Emission Control System Information

Information on emission control components and tampering regulations.

General Operating Safety Rules

Essential guidelines for safe operation, maintenance, and personal protection.

Assembly Procedures

Required Tools and Unpacking

Lists required tools and steps for unpacking the unit.

Unit Setup for Operation

Operating Position and Fluid Checks

Steps for positioning the unit, checking fluids, and adjusting the seat.

Controls and Features Overview

Control and Interlock System Checks

Procedures for checking safety interlock system and unit controls.

Tire Pressure Specifications

Instructions for checking tire pressure and overview of technical specifications.

Mower Operation Basics

Safety Interlock System Tests

Tests to ensure the safety interlock system is functioning correctly.

Ignition Switch and Throttle Control

Operation of the ignition switch and throttle lever for engine control.

Mower Control Functions

Choke, Brake, PTO, and Hour Meter

Details on choke, parking brake, PTO engagement, and hour meter functions.

Steering Lever Operation

Instructions for using steering levers for movement and turning.

Fueling and Gasoline Guidelines

Filling the Fuel Tank

Safe procedures for filling the fuel tank and important precautions.

Gasoline Recommendations

Guidelines for using appropriate types of gasoline.

Engine Start, Stop, and Emergency Procedures

Starting and Stopping the Engine

Step-by-step instructions for starting and stopping the engine safely.

Emergency Stop and Manual Movement

Procedures for emergency stopping and manually moving the unit.

Maintenance Schedule and Best Practices

Scheduled Maintenance Tasks

Chart outlining regular maintenance tasks based on usage intervals.

Tips for Best Performance

Recommendations for optimal grass cutting and unit performance.

Service and Adjustments

Replacing Mower Blades

Step-by-step guide for removing and installing mower blades.

Mower Deck Adjustments

Deck Leveling and Pitch Adjustment

Procedures for adjusting mower deck height and pitch for optimal cutting.

Battery Service Procedures

Battery Removal, Installation, and Cleaning

Instructions for servicing the unit's battery.

Steering and Battery Charging

Adjusting Steering Levers

Guide for adjusting steering levers for proper unit control and tracking.

Charging the Battery Safely

Procedures for charging the unit's battery safely.

Belt Replacement Procedures

Replacing the PTO Belt

Steps for removing and installing the PTO belt.

Replacing the Hydrostatic Belt

Instructions for removing and installing the hydrostatic belt.

Hydraulic System Maintenance

Changing Hydraulic Fluid and Filter

Procedure for changing hydraulic fluid and filter for the trans axle.

Storage and Fuel System Care

Storage Guidelines and Fuel Stabilizer

Guidelines for storing the unit and adding fuel stabilizer.

Troubleshooting Engine and Drive Issues

Engine Starting and Running Problems

Solutions for problems like engine not starting or running rough.

Unit Movement and Transmission Problems

Troubleshooting for issues with unit movement when using steering levers.

Troubleshooting Operational Problems

PTO, Overheating, and Brake Engagement Issues

Solutions for problems with PTO engagement, engine overheating, and brake issues.

Tracking and Creeping Issues

Troubleshooting for units that do not track straight or creep in neutral.

Parts, Accessories, and Cutting Quality

Service Parts and Optional Accessories

List of genuine Gravely replacement parts and optional accessories.

Improving Cutting Quality

Tips for achieving better cutting performance by addressing deck level and blade condition.

Technical Specifications

Model and Performance Data

Detailed specifications for models, engine, speed, dimensions, and capacity.

Consumer Limited Warranty

Warranty Coverage and Customer Responsibilities

Details on product warranty periods, exceptions, and customer responsibilities.

Emissions Control System Warranty

Evaporative Emission System Warranty Statement

Explains warranty rights and responsibilities for evaporative emission control systems.

Gravely 42 ZT XL Specifications

General

Engine Brand	Kawasaki
Engine Power	21.5 HP
Cutting Width	42 inches
Cutting Height Range	1.5-4.5 inches
Engine Displacement	726 cc
Deck Material	Steel
Speed	7 mph
Warranty	3 years