Gravely 915204 - 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

N
Nichole MiddletonAug 13, 2025
What to do if my Gravely Lawn Mower engine does not start?
- C
  charles86Aug 13, 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.
M
Matthew JonesAug 16, 2025
How to improve cutting quality of my Gravely 915204 Lawn Mower?
- J
  John WilsonAug 16, 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.
E
Eric SandersAug 20, 2025
What to do if my Gravely Lawn Mower does not drive?
- J
  John MartinAug 20, 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.
H
Hannah BullockAug 25, 2025
Why is my Gravely 915204 engine running rough?
- J
  Jacob AdkinsAug 25, 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.
J
Jonathan PittmanAug 28, 2025
What to do if PTO malfunctions on my Gravely 915204 Lawn Mower?
- R
  Randall DunlapAug 28, 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.
J
Jennifer MooreAug 31, 2025
Why does my Gravely 915204 engine overheat?
- B
  Brett SchroederAug 31, 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.
R
Richard WelchSep 4, 2025
Why does my Gravely 915204 move with engine off and parking brake engaged?
- D
  Dr. Kyle BrownSep 4, 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.
J
Jacqueline DuffySep 8, 2025
What to do if my Gravely 915204 does not track straight?
- A
  Alyssa PerezSep 8, 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.

Summary

SAFETY

GENERAL SAFETY INFORMATION

Practices, emission controls, training, safety symbols, and words.

CONTROLS AND FEATURES

MAJOR CONTROL DESCRIPTIONS

Ignition, choke, throttle, PTO, hour meter, height, deck lift, seat, brake.

OPERATIONAL LEVERS AND SYSTEMS

Parking brake, safety interlocks, steering, transaxle bypass, anti-scalp rollers.

OPERATION

BEFORE OPERATING UNIT

Pre-operation checks and preparation.

OPERATING PROCEDURES

Guidelines for safe operation, environment, and bystanders.

OPERATING CONDITIONS & SLOPE SAFETY

Environmental factors, slope safety, and fuel handling.

MAINTENANCE

MAINTENANCE SCHEDULE

Schedule of maintenance tasks based on usage hours.

KEY SYSTEM CHECKS

Checking safety interlocks, brakes, oil, tires, and fasteners.

COMPONENT SERVICE

Servicing mower blades, belts, battery, and hydraulic systems.

ADJUSTMENTS AND TROUBLESHOOTING

SEAT AND STEERING ADJUSTMENTS

Adjusting operator seat position and steering lever height/reach.

TROUBLESHOOTING GUIDE

Solutions for common issues like engine not starting or rough running.

Summary

SAFETY

GENERAL SAFETY INFORMATION

Practices, emission controls, training, safety symbols, and words.

CONTROLS AND FEATURES

MAJOR CONTROL DESCRIPTIONS

Ignition, choke, throttle, PTO, hour meter, height, deck lift, seat, brake.

OPERATIONAL LEVERS AND SYSTEMS

Parking brake, safety interlocks, steering, transaxle bypass, anti-scalp rollers.

OPERATION

BEFORE OPERATING UNIT

Pre-operation checks and preparation.

OPERATING PROCEDURES

Guidelines for safe operation, environment, and bystanders.

OPERATING CONDITIONS & SLOPE SAFETY

Environmental factors, slope safety, and fuel handling.

MAINTENANCE

MAINTENANCE SCHEDULE

Schedule of maintenance tasks based on usage hours.

KEY SYSTEM CHECKS

Checking safety interlocks, brakes, oil, tires, and fasteners.

COMPONENT SERVICE

Servicing mower blades, belts, battery, and hydraulic systems.

ADJUSTMENTS AND TROUBLESHOOTING

SEAT AND STEERING ADJUSTMENTS

Adjusting operator seat position and steering lever height/reach.

TROUBLESHOOTING GUIDE

Solutions for common issues like engine not starting or rough running.

Gravely 915204 Specifications

General

Model	915204
Transmission	Hydrostatic
Cutting Height	1.5 - 4.5 inches
Deck Material	Steel
Cutting Width	42 inches

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