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Gravely 915078 - User Manual

Gravely 915078
28 pages
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Owner/Operator Manual
ZT XL
00698300A 1/07
Printed in USA
ENGLISH
ESPAÑOL
Model
915076 - ZT1840XL
915078 - ZT2044XL
915080 - ZT2348XL
915082 - ZT2552XL

Table of Contents

Questions and Answers

  • A
    Amy BrockAug 13, 2025
    Why won't my Gravely 915078 engine crank or start?
    • D
      durhamsamuelAug 13, 2025
      If your Gravely Lawn Mower engine won't crank or start, several factors could be at play. First, ensure the safety interlock system is properly engaged and not faulty. Next, check that the fuel tanks are filled and the fuel shut-off valve is open. A discharged battery or poor connection between the battery and cables could also be the culprit; in this case, charge the battery or tighten/clean the battery cables. Lastly, inspect the spark plug wires for looseness or faulty spark plugs, addressing as needed. If these steps don't resolve the issue, there may be a faulty electrical system or engine, and you should contact your Gravely Dealer.
  • L
    Lisa SheltonAug 16, 2025
    How to fix a Gravely Lawn Mower engine that runs rough?
    • M
      Michael MoralesAug 17, 2025
      If your Gravely Lawn Mower engine runs rough, first ensure that the choke is disengaged. If the issue persists, the air filter cartridge may be plugged and require cleaning or replacement. If neither of these steps resolves the problem, the engine may be faulty, and you should contact your Gravely Dealer.
  • A
    Andrew WilliamsAug 20, 2025
    Why my Gravely 915078 unit does not travel in a straight line?
    • M
      Maria Kelley DDSAug 20, 2025
      If your Gravely Lawn Mower does not travel in a straight line, start by checking the tire pressure. If the tire pressure is not the issue, try adjusting the steering levers. If the problem persists, there may be an issue with the hydrostatic transmission and/or linkage, and you should contact your Gravely Dealer.
  • L
    Linda GillespieAug 25, 2025
    What to do if Gravely 915078 Lawn Mower does not move with engine running?
    • R
      Regina DavisAug 25, 2025
      If your Gravely Lawn Mower unit does not move with the engine running when using the steering levers, first check if the transmission bypass lever is engaged and disengage it. If that's not the issue, the hydrostatic belt may be faulty and need replacement. If the problem continues, the transmission may be faulty, and you should contact your Gravely Dealer.
  • T
    thomasbarnettAug 28, 2025
    What to do if PTO or mower blades do not engage or shut off on Gravely Lawn Mower?
    • L
      Lauren VazquezAug 28, 2025
      If the PTO or mower blades on your Gravely Lawn Mower do not engage or shut off, start by ensuring the operator presence switch is depressed by sitting on the seat. Also, check if the electric clutch connector is loose or disconnected, and connect it if necessary. A faulty PTO belt could also be the cause, so consider replacing it. If these steps don't solve the problem, the issue might be a faulty operator presence switch, PTO switch, wires, connectors, or clutch, and you should contact your Gravely Dealer.
  • C
    Christopher LongAug 31, 2025
    What causes Gravely 915078 Lawn Mower engine to overheat?
    • W
      Wendy JacksonAug 31, 2025
      If your Gravely Lawn Mower engine overheats, first check the engine oil level and add oil if it is low. If the oil level is sufficient, the cooling system may be plugged and require cleaning. If the problem persists, the engine may be faulty, and you should contact your Gravely Dealer.
  • W
    William McclainSep 4, 2025
    How to improve cutting quality of Gravely 915078 Lawn Mower?
    • A
      Ashley PadillaSep 4, 2025
      If you notice poor cutting quality with your Gravely Lawn Mower, the mower deck may not be level or the mower pitch may be incorrect; in this case, level and adjust the pitch of the mower deck. Alternatively, the mower blades may be dull or faulty, requiring sharpening or replacement.
  • K
    Kevin GonzalesSep 8, 2025
    Why does the hour meter continue to run when engine is not running on my Gravely Lawn Mower?
    • A
      Ashley GentrySep 8, 2025
      If the hour meter on your Gravely Lawn Mower continues to run when the engine is not running, ensure the ignition key is turned to the off position.

Summary

Safety Information

General Safety Warnings and Alerts

Important safety precautions, symbols, and hazard level definitions.

Specific Safety Warnings from Decals

Rotating Parts and Discharge Area Safety

Warnings about staying clear of rotating parts and the discharge area.

Operational and Bystander Safety

Instructions for safe operation, children's safety, and avoiding thrown objects.

Fueling and Mower Guard Safety

Operational Safety Rules

Slope Operation and Handling

Guidelines for operating on slopes, including speed, direction, and avoiding steep inclines.

Hot Surfaces and Fueling Safety

General Safety Practices

Rules for operator training, alertness, clothing, protective gear, and unit maintenance.

Safe Operating Procedures

General Operation and Movement

Rules for operating, moving, and stopping the unit safely, including hazards.

Slope, Towing, and Transport Safety

Guidelines for slopes, towing, loading/unloading, and securing the unit.

Fueling and Electrical Safety

Precautions for handling fuel safely and avoiding electrical hazards.

Battery and Component Safety

Battery Handling and Charging Safety

Precautions for battery handling, charging, and preventing explosions.

Engine, Mechanical, and Storage Safety

Warnings regarding engine exhaust, blades, brakes, and proper storage.

Assembly Process

Safety Interlock System Verification

Crucial warning and instruction to check the safety interlock system before each use.

Operating the Mower

Safety Interlock System Testing

Procedure to test the safety interlock system for proper function before operation.

Engine and Drive Controls

Operation of ignition, throttle, choke, PTO, and parking brake for mowing.

Engine Operation and Performance

Starting and Stopping the Engine

Mower Operation and Transport

Maintenance Schedule

Regular Use Checks

Scheduled Servicing Intervals

Service and Adjustments

Mower Deck Leveling and Pitch Adjustment

Guide on adjusting the mower deck for proper height and cutting pitch.

Mower Deck Adjustment

Leveling the Mower Deck

Detailed procedure to ensure the mower deck is perfectly level across its width.

Adjusting Mower Deck Pitch

Steps to set the correct front-to-back pitch for ideal grass cutting.

Mower Deck Service

Blade Maintenance and Sharpening

Blade and Roller Adjustments

Blade Sharpening and Balancing

Drive System and Belt Replacement

Steering Lever Speed Adjustment

PTO Belt Replacement Procedure

Troubleshooting Engine Issues

Starting and Running Problems

Common causes and fixes for engines that won't start or run roughly.

Overheating and Other Engine Issues

Troubleshooting Drive and Cutting Issues

Drive System Problems

Cutting Quality and Brake Issues

Gravely 915078 Specifications

General IconGeneral
BrandGravely
Model915078
CategoryLawn Mower
LanguageEnglish

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