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Ferris IS1500Z Series - User Manual

Ferris IS1500Z Series
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5102059
Revision G
Briggs & Stratton Power Products Group, LLC.
5375 North Main Street
Munnsville, NY 13409
800-933-6175
IS1500Z Series
Zero-Turn Riding Mower
OPERATOR’S
MANUAL
Model No.: Description Horsepower Deck Size Serial Number:
5900832 IS1500ZKAV2552 AUS/NZ 25HP 52” Side Discharge All
5900833 IS1500ZKAV2552 25HP 52” Side Discharge All
5900836 IS1500ZKAV2552 CAL 25HP 52” Side Discharge All
5900877 IS1500ZKAV2048 20HP 48” Side Discharge 2014744586 & Above
5900576 IS1500ZKAV1948 19HP 48” Side Discharge All
5900589 IS1500ZB2648 26HP 48” Side Discharge All
Not for
Reproduction

Questions and Answers

  • T
    Tony ColonSep 12, 2025
    What causes stingers when cutting with my Ferris IS1500Z Lawn Mower?
    • R
      Richard White DVMSep 12, 2025
      Stingers left after cutting with your Ferris Lawn Mower can be caused by: * Blades that are not sharp or nicked: Sharpen your blades. * Blades that are worn down too far: Replace your blades. * Engine speed that is too slow: Always mow at full throttle. * Ground speed that is too fast: Slow down. * A deck plugged with grass: Clean out the mower.
  • Y
    Yolanda MurrayAug 25, 2025
    What to do if my Ferris IS1500Z engine starts hard or runs poorly?
    • S
      Sharon MaddoxAug 25, 2025
      If your Ferris Lawn Mower engine starts hard or runs poorly, the fuel mixture might be too rich. Try cleaning the air filter and checking the choke adjustment. Another potential cause is faulty, fouled, or incorrectly gapped spark plugs, so clean, gap, or replace them as needed, referring to the engine manual for guidance.
  • C
    Caitlyn BrewerAug 26, 2025
    Why does my Ferris IS1500Z engine start hard or run poorly?
    • D
      dmoodyAug 27, 2025
      If your Ferris Lawn Mower engine starts hard or runs poorly, it could be due to a fuel mixture that is too rich. Try cleaning the air filter and checking the choke adjustment.
  • O
    ohughesAug 27, 2025
    What to do if my Ferris Lawn Mower engine stalls easily with mower engaged?
    • D
      davislisaAug 27, 2025
      If your Ferris Lawn Mower engine stalls easily when the mower is engaged, it could be due to several reasons: * Engine speed is too slow: Set to full throttle. * Ground speed is too fast: Decrease ground speed. * Cutting height is set too low: Increase the cutting height. * Discharge chute jamming with cut grass: Cut grass with discharge pointing towards previously cut area.
  • J
    James CochranAug 29, 2025
    How to fix uneven cutting with my Ferris Lawn Mower?
    • G
      Gina HodgeAug 29, 2025
      Uneven cutting with your Ferris Lawn Mower can result from several factors: * The deck may not be leveled correctly, so level the deck correctly. * Blades may be dull or worn, so sharpen or replace the blades. * Blades may be damaged, so replace the blades. * The deck may be clogged with grass clippings, so clean out the deck. * The deck shell may be damaged, so repair or replace the deck. * The mower spindle may be bent or loose, so repair or replace the spindle. * Blades may be installed incorrectly, so reinstall the blades correctly. * Tires may not be properly inflated, so check and inflate the tires.
  • B
    Brittney GonzalezAug 30, 2025
    What causes excessive belt wear or breakage on my Ferris Lawn Mower?
    • T
      Tanya HernandezAug 31, 2025
      Excessive belt wear or breakage in your Ferris Lawn Mower can be caused by: * Bent or rough pulleys: Repair or replace them. * Using the incorrect belt: Replace it with the correct belt. * Incorrect belt tension: For fixed belt tensioners, replace the spring if worn. For adjustable belt tensioners, adjust to the correct tension.
  • M
    Michael MaddoxSep 18, 2025
    What to do if the brake will not hold on my Ferris Lawn Mower?
    • K
      Kelly WilliamsSep 18, 2025
      If the brake on your Ferris Lawn Mower will not hold, it could be because the brake is incorrectly adjusted or the brake pads are worn. Replace with new pads.
  • A
    Alexis RobinsonNov 20, 2025
    Why won't my Ferris IS1500Z engine turnover or start?
    • M
      Maria HansonNov 20, 2025
      If your Ferris Lawn Mower engine won't turnover or start, several factors could be at play. First, ensure the parking brake is engaged and the PTO (electric clutch) switch is in the OFF position. Check if you're out of fuel, and if the engine is hot, let it cool before refilling. If the engine is flooded, move the choke control to the closed position. Examine the fuse and replace it if blown. Clean the battery terminals if they're dirty, and recharge or replace the battery if it's discharged or dead. Inspect the wiring for looseness or breaks, and tighten connections or replace faulty wires. If the issue persists, it could be a faulty solenoid, starter motor, or safety interlock switch, requiring assistance from an authorized dealer. Also, check the spark plugs for fouling, incorrect gappi...
  • R
    Richard ElliottSep 9, 2025
    What to do if the drive belt slips or fails to drive on my Ferris Lawn Mower?
    • L
      Lucas RussellSep 9, 2025
      If the drive belt on your Ferris Lawn Mower slips or fails to drive, it could be due to: * Incorrect belt tension: For fixed belt tensioners, replace the spring if worn; for adjustable belt tensioners, adjust to correct tension. * A broken drive belt: Replace it with a new belt.
  • R
    Robert MirandaSep 6, 2025
    What causes streaking when cutting with my Ferris IS1500Z Lawn Mower?
    • C
      Chad ShawSep 6, 2025
      Streaking while cutting with your Ferris Lawn Mower can be caused by: * Blades that are not sharp: Sharpen your blades. * Blades that are worn down too far: Replace your blades. * Engine speed that is too slow: Always mow at full throttle. * Ground speed that is too fast: Slow down. * A deck plugged with grass: Clean out the mower. * Not overlapping cutting rows enough: Overlap your cutting rows. * Not overlapping enough when turning: When turning your effective cutting width decreases–overlap more when turning.

Summary

Operator Safety Guide

General Operating Safety Principles

Essential safety rules and practices for mower operation and handling.

Hazard Identification and Prevention

Awareness and avoidance of hazards like slopes, moving parts, and thrown objects.

Roll Bar and Seat Belt Safety

Proper use of safety features to prevent injury from rollovers.

Safety Interlock System Function

How safety interlocks work and why they must not be bypassed.

Features and Controls

Safety Decals and Control Locations

Identifying safety labels and the layout of mower controls.

Control Functions Explained

Detailed explanation of how each control operates the mower.

Operation Guide

Before You Operate

Pre-operation checks and familiarization with the unit.

Driving and Maneuvering

Techniques for zero-turn driving, basic and advanced maneuvers.

Mowing Best Practices

Recommendations for effective mowing, height, patterns, and conditions.

Storage and Transport

Guidelines for attaching trailers, lowering the roll bar, and storing the mower.

Regular Maintenance

Maintenance Schedule and Intervals

Recommended service tasks based on operating hours.

Engine and Hydraulic System Care

Procedures for oil changes, filter replacements, and hydraulic system checks.

Blade and Belt Maintenance

Servicing mower blades and replacing drive belts.

Adjustments and Lubrication

Performing adjustments to controls, suspension, brakes, and lubricating components.

Battery Service and Charging

Maintaining the battery, including charging and jump-starting procedures.

Troubleshooting and Specifications

Problem Diagnosis and Solutions

Identifying and resolving common issues with the rider and mower.

Cutting Quality Issues

Troubleshooting common problems affecting grass cutting quality.

Technical Specifications

Key performance and dimensional data for the mower.

Owners Limited Warranty

Ferris IS1500Z Series Specifications

General IconGeneral
Cutting Width61 in
Cutting Height1.5-4.5 in
TransmissionHydro-Gear ZT-3400 Transaxles
Drive SystemHydrostatic
Engine Type4-Cycle

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