Gravely Pro-Master 260H User Manual (English)

Questions and Answers:

T
timothysantiagoAug 10, 2025
What to do if my Gravely Pro-Master 260H Lawn Mower cranks but does not start?
- R
  Renee LopezAug 10, 2025
  If your Gravely Lawn Mower engine cranks but doesn't start, there are several potential causes. First, check if the fuel tank is empty and fill it, being careful not to overfill. A faulty spark plug could also be the culprit, so replace it. Additionally, inspect the air cleaner and fuel filter for dirt or blockages, and clean or replace them as needed. If the issue persists, the fuel pump or engine itself may be faulty, in which case you should consult your Engine Manual or a Gravely Dealer.
T
Timothy MartinezAug 16, 2025
What to do if PTO or mower blades do not engage or shuts off on my Gravely Pro-Master 260H Lawn Mower?
- G
  Gina GregoryAug 16, 2025
  If the PTO or mower blades on your Gravely Lawn Mower do not engage or shut off, it could be due to the operator presence switch not being depressed. Ensure you are sitting on the seat to depress the switch. If the problem persists, the PTO switch may be faulty, and you should consult your Gravely Dealer.
K
Katherine LeeAug 22, 2025
Why my Gravely Pro-Master 260H Lawn Mower unit does not drive?
- C
  carlsonkennethAug 22, 2025
  If your Gravely Lawn Mower unit does not drive, it could be due to a few reasons. Make sure the parking brake is disengaged. Also, check that the transmission bypass valves are closed. If the hydraulic oil level is low, add more. If none of these solutions work, there might be a problem with the hydraulic drive system, and you should consult your Gravely Dealer.
R
Rebecca RodgersAug 28, 2025
Why does my Gravely Pro-Master 260H engine not crank?
- D
  Derek JohnsonAug 28, 2025
  If your Gravely Lawn Mower engine doesn't crank, it could be due to several reasons. First, ensure that the PTO is disengaged and the parking brake is engaged. Check the battery cables for looseness or corrosion, and clean and tighten them if necessary. The battery might be discharged, so ensure that you charge it. If none of these steps work, the starter may be faulty, and it is best to consult your Gravely Dealer.
C
Carla Clark DVMSep 2, 2025
Why does my Gravely Lawn Mower engine continue to run when ignition key is off?
- J
  James YoungSep 3, 2025
  If the engine continues to run when the ignition key is in the off position on your Gravely Lawn Mower, it could be due to an ignition switch failure. In this case, you should replace the ignition switch and consult your Gravely Dealer. Another possible cause is a disconnected ignition ground wire, so ensure the ground wire is connected to a clean metal surface.

Gravely Pro-Master 260H Specifications

General

Brand	Gravely
Model	Pro-Master 260H
Category	Lawn Mower
Language	English

Summary

Safety Overview

Signal Words and Safety Alerts

Explains signal words (Danger, Warning, Caution) and safety alert symbols used in the manual.

Safety Decals Overview

Highlights the importance of understanding and following safety decals on the equipment.

Safety Decal Details

Safety Decal Identification

Visual identification of safety decals located on the equipment.

Amputation Hazard Decal

Details the specific decal warning about amputation hazards from moving parts.

Specific Safety Hazards

Discharge, Tipping, and Service Hazards

Covers hazards related to discharged objects, tipping, and maintenance procedures.

Bystander and Traction Hazards

Addresses risks to bystanders and hazards related to loss of traction.

Detailed Safety Warnings

Danger and Caution Warnings

Explains specific danger and caution warnings related to operation.

Hot Surfaces and Rotating Parts

Warnings about touching hot surfaces and staying clear of rotating parts.

Rollover Protection Structure Safety

Safety precautions related to the Rollover Protective Structure (ROPS).

Operational Safety Guidelines

Rollover and Fire Prevention

Safety measures to prevent machine rollover and fires.

General Safety Rules and Training

Basic safety rules, ANSI specifications, and operator training requirements.

Safe Operating Practices

Operator Age and Child Safety

Guidelines for operator age, experience, and child safety precautions.

Personal Protection and Pre-Operation Checks

Recommended PPE and essential checks before starting the unit.

Safe Operation and Unit Condition

Rules for safe operation, area clearance, and maintaining unit condition.

Operating Conditions and Slopes

Slope Operation Procedures

Detailed instructions and warnings for operating the unit on slopes.

Fuel, Towing, and Accessories

Fuel Handling and Safety

Safe practices for handling, storing, and using gasoline and ethanol blends.

Battery Safety

Battery Precautions

Warnings regarding electric shock, hazardous materials, and battery connections.

Battery and Unit Maintenance

Battery Hazards and ROPS

Details risks of explosive gases, acid, and lead from batteries; ROPS inspection.

Pre-Operation Checks

Control Function Verification

Controls and Features

Component Identification

Identifies and lists all major controls and features of the unit with corresponding numbers.

Operation Basics

Safety Interlock System Testing

Procedures to test the safety interlock system before operation.

Ignition, Choke, and Throttle Controls

PTO Switch Operation

Fueling and ROPS Operation

Fuel Tank Filling and Gasoline Guidelines

ROPS Center Bar Operation

Engine Operation

Pre-Start Checks and Emergency Stop

Essential pre-start checks and procedures for emergency stopping.

Starting and Shutting Off Engine

Detailed instructions for starting and safely shutting down the engine.

Mower Operation

Engaging Mower Blades

Maintenance Schedule

Tasks for Each Use

Every 25 Hour Maintenance

Service and Adjustments

Servicing the Battery

Service Procedures

Battery Installation and Charging

Mower Blade Removal

Blade Service

Mower Blade Installation

Procedures for installing mower blades, including tightening specifications.

Sharpening Mower Blades

Guidelines for safely sharpening mower blades, including balance checks.

Mower Deck Leveling

Blade Level and Pitch Check

How to check the mower deck's side-to-side level and front-to-back pitch.

Adjusting Blade Height

Procedure for adjusting the mower deck height using lift bracket adjusters.

Belt Access and PTO Belt Service

PTO Belt Safety and Access

Mower Drive Belt and PTO Belt Access

PTO Belt Removal (992217)

PTO Belt Service

PTO Belt Installation (992217)

PTO Belt Removal (992219)

Mower Drive Belt Service

Mower Drive Belt Installation (992217)

Drive Belt and Transmission Service

Mower Drive Belt Service (992219)

Steering Control Neutral Adjustment

Steering System Adjustments

Aligning the Steering Levers

Eliminating Excessive Unit Creeping

Parking Brake and Hydraulic System

Hydraulic Oil System Warnings

Critical safety warnings related to hydraulic fluid and system pressure.

Checking Hydraulic Oil Level

Troubleshooting

Engine Starting and Running Issues

Solutions for engine not cranking or cranking but not starting.

Warning Lights and PTO Engagement

Unit Not Driving Issues

Specifications

Model, Engine, and Speed Specs

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