Gravely 48 ZT XL User Manual

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ZT XL™

Owner/Operator Manual

Manuel Du Propriétaire/Utilisateur

Models

915160 – 42 ZT XL

(Serial No. 010000 and up)

915162 – 48 ZT XL

(Serial No. 010000 and up)

915164 – 54 ZT XL

(Serial No. 010000 and up)

04052400A 1/12

Printed in USA

ENGLISH

FRANÇAIS

Gasoline containing up to 10% ethanol (E10) or up to 10% MTBE (methyl tertiary butyl ether) is

acceptable for use in this machine.The use of any gasoline exceeding 10% ethanol (E10) or

10% MTBE will void the product warranty.

Il est possible d’utiliser de l’essence contenant jusqu’à 10% d’éthanol (E10) ou 10% de MTBE

(éther méthyl-tertiobutylique) sur cette machine.L’utilisation d’une essence contenant plus de

10% d’éthanol (E10) ou de 10% de MTBE annulent la garantie.

Table of Contents

Questions and Answers:

S
samuelsalinasAug 16, 2025
Why my Gravely 48 ZT XL Lawn Mower engine will not crank/start?
- J
  johnleeAug 16, 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.
A
Anna ElliottAug 19, 2025
What to do if PTO or mower blades do not engage or shuts off on my Gravely 48 ZT XL Lawn Mower?
- A
  Aaron WangAug 19, 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.
R
Rebecca WoodAug 22, 2025
What to do if my Gravely 48 ZT XL does not move with engine running when using steering levers?
- C
  Christopher RobersonAug 22, 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.
T
Todd CoxAug 25, 2025
What to do if my Gravely 48 ZT XL Lawn Mower moves with engine off and parking brake engaged?
- K
  Kevin SalazarAug 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.
J
Jessica TurnerAug 28, 2025
How to fix a Gravely Lawn Mower when the engine runs rough?
- T
  Taylor WestAug 28, 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.
N
Nicole GillAug 31, 2025
What causes a Gravely 48 ZT XL Lawn Mower engine to overheat?
- C
  corey67Aug 31, 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.
R
Rachael ThomasSep 3, 2025
How to improve the cutting quality of my Gravely 48 ZT XL?
- D
  Debra LoganSep 3, 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.
A
Aaron McdonaldSep 6, 2025
Why my Gravely Lawn Mower does not travel in a straight line?
- J
  james21Sep 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.
A
Andre StewartSep 9, 2025
Why my Gravely Lawn Mower creeps with steering levers in neutral position?
- P
  Pamela WaltersSep 9, 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.

Gravely 48 ZT XL Specifications

General

Engine Brand	Kawasaki
Engine Displacement	726 cc
Cutting Width	48 inches
Number of Blades	3
Spindle Material	Aluminum
Cutting Height	1.5 - 4.5 inches
Turning Radius	Zero Turn
Warranty	3 years

Summary

INTRODUCTION

THE MANUAL

Emphasizes reading the manual before operation for safety and controls.

SAFETY GUIDELINES AND HAZARDS

SAFETY ALERTS AND NOTATIONS

Explains safety symbols, alerts, and notations used in the manual.

DANGER! DISCHARGE AND DISMEMBERMENT HAZARDS

Warns about discharge dangers and keeping body parts away from moving components.

OPERATIONAL HAZARDS: TIPPING AND GENERAL DANGER

Covers tipping hazards, slope operation, and general danger alerts.

SERVICE, BYSTANDER, AND TRACTION HAZARDS

Precautions for servicing, bystanders, and loss of traction.

GENERAL DANGER AND SAFETY RULES

Broad safety warnings and essential rules for safe operation and maintenance.

SLOPE, TRANSPORT, AND FUEL HANDLING SAFETY

Specific safety guidelines for slope operation, transport, and fuel handling.

BATTERY AND MAINTENANCE SAFETY

Safety precautions for battery handling, general maintenance, and storage.

ASSEMBLY

PRE-OPERATION CHECKS AND ADJUSTMENTS

Essential checks for oil, deck, fuel, and seat adjustment before operation.

CONTROLS AND FEATURES

CONTROLS AND FEATURES OVERVIEW

Identifies and describes the unit's main controls and features with a diagram.

OPERATION PROCEDURES

SAFETY INTERLOCK SYSTEM TESTING

Procedures to test the safety interlock system for proper function.

IGNITION SWITCH AND THROTTLE LEVER OPERATION

Explains the ignition switch positions and throttle lever operation.

CHOKE, PARKING BRAKE, AND PTO SWITCH OPERATION

Operation of choke, parking brake, and PTO switch for starting and blades.

FUELING AND GASOLINE GUIDELINES

Instructions for filling the fuel tank and recommended gasoline types.

MANUAL MOVEMENT AND ENGINE OPERATION

Moving the unit manually and procedures for starting/stopping the engine.

MAINTENANCE SCHEDULE

MAINTENANCE SCHEDULE OVERVIEW

Chart of recommended maintenance tasks and intervals for unit longevity.

EACH USE MAINTENANCE CHECKS

Checks to perform before each use, including safety systems and tires.

SCHEDULED MAINTENANCE INTERVALS

Maintenance tasks based on operating hours (25, 50, 100 hours).

SERVICE AND ADJUSTMENTS

ACCESSING COMPONENTS AND REPLACING MOWER BLADE

Procedures for accessing components and replacing mower blades.

MOWER DECK LEVELING AND PITCH ADJUSTMENT

Guides on adjusting the mower deck for proper height and pitch.

BLADE HEIGHT AND FORWARD PITCH SPECIFICATIONS

SIDE-TO-SIDE BLADE PITCH AND DECK ADJUSTMENT

TROUBLESHOOTING ENGINE AND MOVEMENT ISSUES

ENGINE STARTING AND RUNNING PROBLEMS

UNIT MOVEMENT AND STEERING PROBLEMS

TROUBLESHOOTING OTHER ISSUES

PTO, OVERHEATING, AND CREEPING PROBLEMS

LIMITED WARRANTY COVERAGE

WARRANTY DETAILS, EXTENSIONS, AND EXCEPTIONS

LIMITED WARRANTY PROCEDURES AND DISCLAIMERS

WARRANTY SERVICE PROCEDURES AND EXCLUSIONS

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