Troubleshooting; Symptom(S); Troubleshooting - Foreword; Engine - Troubleshooting - New Holland Workmaster 25S Operator's Manual

8 -

TROUBLESHOOTING###_8_###

Symptom(s)

Troubleshooting - Foreword

The following troubleshooting information will help you in the unlikely event a problem occurs with your equipment.
Reading the troubleshooting chart is easy. The left-hand column will be the problem you may be having with your
equipment. The center column explains the possible cause or causes of the problem. The right-hand columns gives
you corrective actions you can take to solve the problem. If you feel unsure how to handle the problem with your
equipment do not hesitate to contact your NEW HOLLAND dealer for assistance.

Engine - Troubleshooting

Problem
The start motor does not
rotate with the key switch
in the (START) position.
The start motor rotates
but the engine does not
start
Engine speed is irregular Air in fuel system
Engine stops suddenly
during operation
Engine speed is more
than maximum rated high
idle speed
Engine stops at low speed Faulty injection pump
Low engine power
8 - TROUBLESHOOTING
Possible Cause
Safety start switch not completing circuit
PTO safety switches not completing circuit Verify the Power Take-Off (PTO) shift lever
Low battery charge
Loose battery or starter cable terminals
Key switch faulty
Starter motor faulty
Low battery charge
Air in fuel system
Fuel filter clogged
Fuel injection pump not operating correctly See your NEW HOLLAND dealer for ser-
Fuel filter clogged
Injection nozzle clogged
Fuel leakage
Irregular fuel injection
Fuel shortage
Faulty fuel injector
Faulty fuel injection pump
Internal parts of engine seized due to lack
of lubrication
Governor malfunction
Engine valve gap is not correct
Low fuel injector pressure
Fuel injector nozzle clogged
Verify the forward or reverse pedals are in
neutral
is in "rear" position and the PTO switch is
in the "off" position
Charge or replace
Tighten the terminal
Repair or replace switch
Repair or replace starter motor
Charge or replace battery
Bleed out the air
Clean or replace the filter
vice
Bleed the fuel system
Clean or replace the filter
See your NEW HOLLAND dealer for ser-
vice
Check for fuel leaks and replace fuel lines
as needed
See your NEW HOLLAND dealer for ser-
vice
Add fuel and bleed air from fuel system
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
See your NEW HOLLAND dealer for ser-
vice
8-1
Correction