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New Holland Workmaster 25S - User Manual

New Holland Workmaster 25S
208 pages
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OPERATOR’S MANUAL
Part number 90396272
3
rd
edition English
February 2021
Replaces part number 90441867
Workmaster
25S
Tier 4B (final)
Compact Tractor
ORIGINAL INSTRUCTIONS

Table of Contents

Questions and Answers

  • P
    Patricia BryantAug 19, 2025
    What to do if my New Holland Tractor engine is overheating?
    • H
      Heather YoungAug 19, 2025
      If your New Holland Tractor's engine is overheating, start by checking the radiator screen for grass or debris and clean it as needed. Ensure that the coolant level is adequate and add coolant if necessary. Inspect the fan belt for slippage or breakage; adjust the tension or replace the belt if required.
  • F
    Frederick RogersAug 21, 2025
    What to do if the start motor rotates but the New Holland Tractor engine doesn't start?
    • R
      Ryan GutierrezAug 21, 2025
      If the start motor rotates but the engine doesn't start on your New Holland Tractor, the battery charge might be low, so charge or replace it. There may be air in the fuel system, which requires bleeding. Also, the fuel filter could be clogged, so clean or replace it.
  • M
    Melissa RamseyAug 23, 2025
    Why won't the start motor rotate on my New Holland Workmaster 25S?
    • W
      wmonroeAug 23, 2025
      If the start motor on your New Holland Tractor doesn't rotate when you turn the key, several issues could be at fault. First, make sure the forward or reverse pedals are in neutral and that the Power Take-Off (PTO) shift lever is in the “rear” position with the PTO switch off. A low battery charge can also prevent the motor from starting, so charge or replace the battery. Check for loose battery or starter cable terminals and tighten them if necessary. The key switch itself or the starter motor could be faulty, requiring repair or replacement.
  • B
    Brian BarronAug 26, 2025
    Why is the battery charging indicator on in my New Holland Workmaster 25S Tractor?
    • D
      Debra DavisAug 26, 2025
      If the battery charging indicator light stays on during operation of your New Holland Tractor, check for bad electrical connections at the battery terminals and ground, and repair as needed. The alternator or the battery itself may be faulty and require repair or replacement. Also, check the fan belt tension and replace the belt if it's broken or has incorrect tension.
  • C
    cindy98Aug 27, 2025
    Why is the engine oil pressure light on in my New Holland Workmaster 25S Tractor?
    • C
      Curtis WheelerAug 27, 2025
      If the engine oil pressure indicator light is on during operation of your New Holland Tractor, it could be due to a lack of engine oil, so add oil as needed. Low viscosity of the engine oil can also trigger the light, so replace the oil with the proper viscosity type. A faulty pressure switch or a clogged engine oil filter can also be the cause; replace the switch or the filter accordingly.
  • A
    Andrew RiveraAug 30, 2025
    Why is the engine speed irregular on my New Holland Workmaster 25S Tractor?
    • G
      Gina HolmesAug 30, 2025
      Irregular engine speed in your New Holland Tractor can be caused by several factors. Air in the fuel system may be the issue, requiring you to bleed the fuel system. A clogged fuel filter can also cause this problem, so clean or replace the filter. Additionally, check for fuel leaks and replace fuel lines if needed.
  • R
    Rhonda Gray DDSAug 31, 2025
    Why is the exhaust gas black on my New Holland Workmaster 25S Tractor?
    • G
      glenn72Sep 1, 2025
      Black exhaust gas from your New Holland Tractor may indicate a clogged air filter, so clean or replace it.
  • A
    afloresSep 3, 2025
    How to troubleshoot a three-point linkage that won't raise on my New Holland Tractor?
    • S
      stephenblakeSep 3, 2025
      If the three-point linkage on your New Holland Tractor won't raise, first ensure the engine speed is at least 1500 RPM. Check if the hitch is overloaded and reduce the load if necessary. Also, check the transmission/hydraulic oil level and add oil if needed. Inspect the hydraulic filter and all hydraulic suction connections, tightening the filter and connections as necessary.
  • K
    Kevin StewartSep 5, 2025
    Why won't the headlights illuminate on my New Holland Tractor?
    • G
      George JamesSep 5, 2025
      If the headlights on your New Holland Tractor won't illuminate, start by replacing any burnt-out light bulbs. Check for blown fuses and replace them with the correct size. Inspect the headlight wiring connection and repair as needed. If the problem persists, the light switch may be faulty and need replacement.
  • C
    Charles HigginsSep 7, 2025
    Why is the HST power low on my New Holland Workmaster 25S?
    • L
      Larry SharpSep 7, 2025
      If the HST power is low on your New Holland Tractor, first reduce the load on the tractor. Check the transmission oil level and add oil as needed. Inspect the hydraulic suction line and repair if there is air in the HST circuit. Replace the HST filter if it is clogged.

Summary

General Information

Intended Use

Defines the tractor's designed purpose and operational limitations to prevent misuse.

Before Using the Tractor - Cab (If Equipped)

Safety and pre-operation checks specific to tractors with a cab.

Product Identification Number (PIN)

Locates identification plates essential for service and parts.

Machine Orientation

Defines the tractor's views (front, rear, left, right) from the operator's perspective.

Safety Information

Safety Rules

General safety precautions for operation, including slope safety and fluid handling.

Safety Signs - Roll Over Protective System (ROPS)

Identifies safety signs related to the ROPS and their importance.

Safety Signs - Cab (If Equipped)

Identifies safety signs specific to the tractor's cab for safe operation.

Controls and Instruments

Forward Controls

Identification and function of primary controls located in the forward area.

Instrument Cluster Panel

Details the various indicators and gauges on the instrument panel.

Key Switch

Operation of the ignition switch for starting, preheating, and powering down the tractor.

Park Brake Lever

Procedure for engaging and releasing the park brake for secure parking.

Differential Lock Pedal

Operation of the differential lock for enhanced traction, including steering considerations.

Operating Instructions

Engine - Running-in Procedure

Guidelines for the initial break-in period to ensure engine longevity and performance.

Refueling the Tractor

Safe procedures for refueling the tractor's fuel tank, including precautions.

Starting the Engine

A step-by-step guide for safely starting the tractor's engine.

Hydrostatic Transmission (HST) - Operation

Explanation of how to operate the HST, its ranges, and speed control.

Parking the Unit

Procedures for safely parking the tractor, including park brake application.

Transport Operations

Road Transport - Overview

General safety guidelines and considerations for driving the tractor on public roads.

Carrying the Tractor on a Transporter

Method for securing the tractor when loading and unloading onto transport.

Working Operations

External Lighting - Operating

How to operate the tractor's turn signals, hazard, headlights, sidelights, and brake lights.

Roll Over Protective Structure (ROPS) Fold Up;Down

Step-by-step instructions for folding and unfolding the ROPS for transport or low clearance.

Hydraulic Power Lift (HPL) - Operation

How to operate the three-point hitch system to raise and lower implements.

Power Take-Off (PTO) - Operation

How to engage, disengage, and operate the rear, mid, and combined PTO.

Maintenance

Maintenance Chart

A schedule detailing required maintenance actions and intervals based on operating hours.

Engine - Change Fluid

Procedure for changing the engine oil and filter at specified intervals.

Fuel Filters - Replace

Steps for replacing the main fuel filter element to ensure fuel system integrity.

Tire Pressure - Check

Importance of maintaining correct tire pressure and guidelines for checking.

Transmission - Change Fluid

Procedure for changing the transmission, rear axle, and hydraulic fluid.

Storage - Storing

Protective measures to take when storing the tractor for an extended period.

Troubleshooting

Engine - Troubleshooting

Diagnosing and resolving common engine-related problems and their causes.

Steering - Troubleshooting

Identifying and fixing issues related to the tractor's steering system.

Hydrostatic Transmission - Troubleshooting

Troubleshooting guide for problems encountered with the HST operation.

Electrical System - Troubleshooting

Steps to diagnose and resolve issues within the tractor's electrical system.

Specifications

Tractor General Specifications

Comprehensive technical data for the tractor's engine, capacities, and systems.

Tractor Dimensions - Roll Over Protective Structure (ROPS)

Specific dimensions related to the ROPS, wheel tread, and ground clearance.

Forms and Declarations

Pre-delivery Report - Dealers Copy

Checklist for dealers to confirm pre-delivery service completion and machine readiness.

Pre-delivery Report - Owners Copy

A checklist for owners to review the pre-delivery service and familiarize themselves with the machine.

New Holland Workmaster 25S Specifications

General IconGeneral
Engine Type3-cylinder diesel
Engine Power24.7 hp
TransmissionHydrostatic
Fuel Capacity6.6 gallons
Drive Type4WD
PTO Speed540 rpm

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