Gravely 915172 User Manual

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05102200C • 2/17

Printed in USA

ENGLISH

FRANÇAIS

E10

ZT X

Operator’s Manual

Manuel du Utilisateur

ZT XL

™

™

915202 – ZT XL 42

(SN 020000 +)

915204 – ZT XL 52

(SN 020000 +)

915206 – ZT XL 42

(SN 020000 +)

915216 – ZT XL 60

(SN 020000 +)

915218 – ZT XL 60

(SN 020000 +)

915230 – ZT X 52

(SN 020000 +)

915236 – ZT X 52 CARB

(SN 020000 +)

915238 – ZT XL 42 CARB

(SN 020000 +)

915240 – ZT XL 52 CARB

(SN 020000 +)

915242 – ZT XL 60 CARB

(SN 020000 +)

915172 – ZT X 42

(SN 020000 +)

915174 – ZT X 52

(SN 020000 +)

915176 – ZT X 42 CARB

(SN 020000 +)

915200 – ZT XL 52

(SN 020000 +)

Models

Table of Contents

Questions and Answers:

R
rossmanuelAug 14, 2025
What to do if my Gravely 915172 Lawn Mower engine does not start?
- L
  Lisa WeberAug 14, 2025
  If your Gravely Lawn Mower engine won't start, several factors could be at play. First, ensure the Safety Interlock System is properly engaged and functioning; if it's faulty, it needs checking. A depleted fuel tank is a common culprit, so replenish it with fuel. Contaminated fuel can also prevent starting, necessitating a replacement with clean fuel. Check the battery; if it's discharged, charge it. Poor connections between the battery and its cables can hinder starting, so tighten or clean them. Inspect the spark plug wires for looseness and examine the spark plugs themselves, replacing them if faulty. If these steps don't resolve the issue, there may be an electrical or engine fault, in which case you should contact your Gravely dealer.
D
Diane ByrdAug 17, 2025
How to improve cutting quality of my Gravely Lawn Mower?
- R
  randymullenAug 17, 2025
  If your Gravely Lawn Mower exhibits poor cutting quality, several factors may be responsible. Ensure the mower blades are level and the mower deck pitch is correct. Dull or faulty mower blades will also impact cutting performance, so sharpen or replace them as needed. Avoid mowing at excessively high speeds, as this can compromise the cut quality. Inspect the belt tension and condition; replace the deck drive belt if it's in poor condition. Also, avoid setting the cutting height too low, and for very tall grass, consider mowing twice.
G
glenn35Aug 21, 2025
What to do if my Gravely Lawn Mower does not drive?
- G
  ghullAug 21, 2025
  If your Gravely Lawn Mower does not drive, ensure that the transaxles are engaged by checking and engaging the levers. If the problem persists, the ground drive belt may be faulty, or the transaxles themselves might be faulty, requiring you to contact your Gravely dealer.
C
Carl ArroyoAug 25, 2025
Why is my Gravely Lawn Mower engine running rough?
- M
  Molly PerezAug 26, 2025
  If your Gravely Lawn Mower engine is running rough, first check the choke control knob; if it's in the 'on' position (applicable to models 915204, 915206, 915218, 915230, 915236, 915238, 915240, 915242), move it to the 'off' position. Another potential cause is a plugged air filter cartridge, which should be cleaned or replaced. If neither of these resolves the issue, the engine itself may be faulty, and you should contact your Gravely dealer.
S
Stephen GuerraAug 28, 2025
What to do if PTO malfunctions on my Gravely 915172 Lawn Mower?
- J
  Jennifer CooperAug 29, 2025
  If the PTO (Power Take-Off) on your Gravely Lawn Mower is malfunctioning, start by ensuring the operator presence switch is engaged by sitting on the operator seat. If the issue persists, the operator presence switch may be faulty, and you should contact your Gravely dealer. Also, inspect the deck drive belt for any faults and replace it if necessary. If the problem continues, the PTO switch, wiring, connectors, or clutch may be faulty, requiring you to contact your Gravely dealer.
M
Michael DeckerSep 1, 2025
Why does my Gravely 915172 Lawn Mower engine overheat?
- M
  Marcia MaysSep 1, 2025
  If your Gravely Lawn Mower engine overheats, start by checking the engine oil level and adding oil if it is low. Also, inspect the cooling fins for any blockages and clean the engine if necessary. If the issue persists, the engine itself may be faulty, and you should contact your Gravely dealer.
T
Tracie BurkeSep 5, 2025
Why does my Gravely 915172 move with engine off and parking brake engaged?
- J
  Jason HardingSep 5, 2025
  If your Gravely Lawn Mower moves with the engine off and the parking brake engaged, the parking brake likely needs adjustment. Adjust the parking brake lever accordingly. If the issue persists, the parking brake itself may be faulty, and you should contact your Gravely dealer.
M
Mrs. Amy Merritt MDSep 9, 2025
What to do if my Gravely Lawn Mower does not track straight?
- P
  Peter JacksonSep 9, 2025
  If your Gravely Lawn Mower does not track straight, begin by checking the tire pressure and ensuring it matches the recommended specifications. If the issue persists, the steering levers may need adjustment. If the problem continues, the transaxles and/or linkages may require adjustment, which necessitates contacting your Gravely dealer.

Gravely 915172 Specifications

General

Brand	Gravely
Model	915172
Category	Lawn Mower
Language	English

Summary

SAFETY

PRACTICES & LAWS

Follow safe working precautions and applicable local rules and laws.

REQUIRED OPERATOR TRAINING

SAFETY ALERT SYMBOL

SIGNAL WORDS

DANGER! HAZARDS

Details critical dangers including amputation, discharge, tipping, and service hazards.

BYSTANDER AND TRACTION HAZARDS

Covers hazards related to bystanders, loss of traction, hot parts, and rotating parts.

CAUTION! AND SAFETY RULES

OPERATING INFORMATION

BEFORE OPERATING

Procedures for ensuring the unit is in safe working condition before use.

OPERATION

Guidelines for safe operation, including clearing the area and ventilation.

OPERATING CONDITIONS

SLOPE OPERATION

Precautions and techniques for safely operating on slopes to prevent tip-overs.

FUEL HANDLING

Safe practices for handling gasoline, including storage and fueling procedures.

CONTROLS AND FEATURES

SAFETY INTERLOCK SYSTEM

STEERING LEVERS

OPERATION PROCEDURES

EMERGENCY STOPPING

Steps to immediately stop the unit in an emergency situation.

BEFORE OPERATING UNIT

Checks and preparations required before starting the engine.

START THE ENGINE

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

OPERATE UNIT

STOP THE ENGINE

Procedure for safely shutting down the engine and unit.

MAINTENANCE

MAINTENANCE SCHEDULE

Recommended service intervals for various maintenance tasks.

MAINTENANCE TASKS

SERVICE POSITION

SAFETY INTERLOCK SYSTEM CHECKS

Tests to verify the proper function of the safety interlock system.

PARKING BRAKE CHECKS

Procedure to check and adjust the parking brake.

ENGINE OIL CHECKS

Instructions for checking and maintaining the engine oil level.

TIRE PRESSURE CHECKS

MOWER BLADE CHECKS

Procedures for checking, removing, sharpening, and installing mower blades.

BATTERY CHECKS

Steps for checking, removing, installing, and charging the battery.

MOWER BELT CHECKS

Procedures for checking, removing, and installing mower drive belts.

GROUND DRIVE BELT INSTALLATION

HYDRAULIC OIL

Check Hydraulic Oil Level

Add Hydraulic Oil

Change Hydraulic Oil and Filter

Steps for changing the hydraulic fluid and filter.

PURGE HYDRAULIC SYSTEM

Purge Hydraulic System

ADJUSTMENTS

ADJUST SEAT

ADJUST STEERING LEVERS

ADJUST UNIT TO TRACK STRAIGHT

Steps to correct the unit's tendency to pull to one side.

ADJUST PARKING BRAKE LEVER

MOWER DECK ADJUSTMENTS

REMOVE AND INSTALL MOWER DECK

Detailed steps for safely removing and reinstalling the mower deck.

ADJUST MOWER DECK

Instructions for leveling the mower deck and setting blade pitch.

TROUBLESHOOTING

Poor cutting quality

Addresses issues causing poor cutting quality, like blade condition or speed.

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