Gravely 991262 User Manual

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ZT HD

Pro-Turn Z / ZX

991240 – ZT HD 44

(SN 000101 +)

991242 – ZT HD 48

(SN 000101 +)

991244 – ZT HD 52

(SN 000101 +)

Operator’s Manual

Manuel de I’utilisateur

09199900B • 11/20

Printed in USA

E10

ENGLISH

FRANÇAIS

991246 – ZT HD 60

(SN 000101 +)

991248 – ZT HD 48

(SN 000101 +)

991250 – ZT HD 52

(SN 000101 +)

991252 – ZT HD 60

(SN 000101 +)

991254 – Pro-Turn Z 48

(SN 000101 +)

991256 – Pro-Turn Z 52

(SN 000101 +)

991258 – Pro-Turn Z 60

(SN 000101 +)

991260 – Pro-Turn ZX 48

(SN 000101 +)

991262 – Pro-Turn ZX 52

(SN 000101 +)

991264 – Pro-Turn ZX 60

(SN 000101 +)

Models

Table of Contents

Questions and Answers:

B
brittanycollinsAug 13, 2025
How to troubleshoot starting issues with my Gravely Lawn Mower?
- J
  Jonathan BarnesAug 14, 2025
  If your Gravely Lawn Mower engine doesn't start, there are several potential causes. First, the safety interlock system might not be engaged or could be faulty. Also, the fuel tank could be empty, or the fuel supply might be contaminated, requiring replacement with clean fuel. The battery could be discharged, needing a charge. A loose connection between the battery and cables can also prevent starting, so ensure they are tightened and clean. Spark plug wires might be loose, or the spark plugs themselves could be faulty, requiring connection or replacement. In some cases, the electrical system or the engine itself might be faulty, in which case you should contact your Gravely dealer.
A
Amber SmithAug 17, 2025
What to do if my Gravely 991262 Lawn Mower does not drive?
- G
  Gary MooreAug 17, 2025
  If your Gravely Lawn Mower does not drive, one potential cause is that the transaxles are bypassed. If this is the case, engage the levers. It's also possible that the transaxle drive belt is faulty, or that the transaxles themselves are faulty, which would require contacting your Gravely dealer.
C
Christopher LawrenceAug 21, 2025
Why is my Gravely 991262 Lawn Mower's cutting quality so poor?
- C
  charles29Aug 21, 2025
  If your Gravely Lawn Mower exhibits poor cutting quality, several factors could be responsible. First, the mower blades might not be level, or the mower deck pitch could be incorrect. It's also possible that the mower blades are dull or faulty, requiring sharpening or replacement. Another factor could be mowing speed is too fast, so try driving slower when cutting grass. Also, belt tension or condition might be poor, requiring replacement of mower belts. Finally, the cutting height might be too low, so avoid setting the height of cut too low, and for very tall grass, mow twice.
J
Jill JoyceAug 25, 2025
What to do if the PTO malfunctions on my Gravely Lawn Mower?
- T
  thomaslongAug 26, 2025
  If the PTO malfunctions on your Gravely Lawn Mower, it could be due to a few reasons. The operator presence switch might not be engaged; make sure to activate it by sitting on the operator seat. It's also possible that the operator presence switch itself is faulty. Another cause could be a faulty PTO belt, which would need replacement. In some cases, the PTO switch, wiring, connectors, or clutch might be faulty, which would require contacting your Gravely dealer.
B
Brandi MitchellAug 29, 2025
Why does my Gravely Lawn Mower engine run rough?
- D
  daniel70Aug 29, 2025
  If your Gravely Lawn Mower engine runs rough, one potential cause is that the choke control knob is in the 'on' position. If this is the case, move the knob to the 'off' position. Another possibility is that the air filter cartridge is plugged, which means you should clean or replace it. In some cases, the engine itself might be faulty, requiring assistance from your Gravely dealer.
R
Ruth PriceSep 1, 2025
Why is my Gravely 991262 Lawn Mower engine overheating?
- N
  Nicholas JensenSep 1, 2025
  If your Gravely Lawn Mower engine overheats, it could be due to a few reasons. The engine oil level might be low, requiring you to add engine oil. Another possibility is that the cooling fins are plugged, which means you should clean the engine. In some cases, the engine itself might be faulty, requiring assistance from your Gravely dealer.
D
Denise ClarkSep 5, 2025
Why does my Gravely 991262 move when off and the parking brake is on?
- C
  christine57Sep 5, 2025
  If your Gravely Lawn Mower moves with the engine off and the parking brake engaged, it could be that the parking brake needs adjustment. You can adjust the parking brake lever. It's also possible that the parking brake itself is faulty, which would require contacting your Gravely dealer.
M
Mary WangSep 9, 2025
Why doesn't my Gravely 991262 drive straight?
- M
  mollymerrittSep 9, 2025
  If your Gravely Lawn Mower does not drive straight, it could be due to incorrect tire pressure, so check the tire pressure. Another possible cause is that the steering levers need adjustment.

Gravely 991262 Specifications

General

Model	991262
Category	Lawn Mower
Cutting Width	52 inches
Deck Material	Steel
Cutting Height	1.5 - 4.5 inches

Summary

SAFETY

Safety Practices and Information

Signal Words and Symbols

Explanation of signal words and the safety alert symbol.

Safety Decal Descriptions

Detailed explanations of the various safety decals shown in the manual.

Hazard Information

Details on Tipping Hazard, Loss of Traction, Service Hazard, Bystander Hazard, and Hot Parts.

Fueling and Fire Safety

Rollover Protection (ROPS) Guidelines

Guidelines for using the Rollover Protection Structure (ROPS) safely.

General Safety Practices and Operator Responsibilities

Safe use, operator duties, and preparation before operation.

Operating Safety Precautions

Guidelines for safe operation, controls, and environment.

Operational Safety Rules

Rules for unit handling, environment, and foreign objects.

Children, Slope, and Fuel Safety

ROPS (Rollover Protection Structure) Safety

Specific safety guidelines for the ROPS system.

Service Safety Precautions

Safety measures to take when servicing the unit.

ASSEMBLY

CONTROLS AND FEATURES

Control Diagram

Illustration showing the location of all controls and features on the unit.

Control and Feature Descriptions

Detailed explanation of each numbered control and feature.

Ignition Key and Choke Control

Throttle and PTO Controls

OPERATION

Emergency Stopping Procedure

Steps for safely stopping the unit in an emergency.

Pre-Operation Checks

Essential checks before starting the engine and operating the unit.

Positioning ROPS

How to position the Rollover Protection Structure for safe operation.

Starting the Engine

Step-by-step guide to starting the engine.

Operating the Unit and Mowing Tips

Guidance on operating the unit and achieving best mowing results.

Engine Shutdown Procedure

Steps to properly stop the engine and secure the unit.

Manual Unit Movement Procedure

MAINTENANCE

General Maintenance Guidelines

Maintenance Schedule

Table outlining scheduled maintenance tasks and intervals.

Parking Brake Check

Engine Oil and Tire Pressure Checks

Fastener Check and Unit Lubrication

Battery Cleaning and Maintenance

Mower Belt and Hydraulic System Checks

Inspecting mower belts for wear and checking hydraulic oil level.

Hydraulic Oil Change and Filter Replacement

Procedure for changing hydraulic oil and replacing the filter.

Purging the Hydraulic System

Steps to remove air from the hydraulic system after service.

ADJUSTMENTS

Steering Lever Adjustment

Adjusting Unit to Drive Straight

TROUBLESHOOTING

Engine Starting and Running Problems

Solutions for engine not starting, running rough, or overheating.

Drive System and PTO Malfunctions

Steering and Cutting Quality Issues

Blade Stop Time Issues

SPECIFICATIONS (Models 991240-991246)

Specifications for Models 991240-991246

SPECIFICATIONS (Models 991248-991252)

Specifications for Models 991248-991252

SPECIFICATIONS (Models 991254-991258)

Specifications for Models 991254-991258

SPECIFICATIONS (Models 991260-991264)

Specifications for Models 991260-991264

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