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Operator’s

Manual

4-Cycle Gas Commercial Trimmer

ST425

PART NO. 769-04614 P00

(1/09)

TABLE OF CONTENTS

Service Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Rules for Safe Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Know Your Unit  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Assembly Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Oil and Fuel Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Starting/Stopping Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Maintenance & Repair Instructions  . . . . . . . . . . . . . . . . . . . . . . . . .5
Cleaning and Storage  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Troubleshooting Chart  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Warranty Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

All information, illustrations, and specifications in this manual are based
on the latest product information available at the time of printing. We
reserve the right to make changes at any time without notice.
Copyright© 2009 MTD SOUTHWEST INC, All Rights Reserved.

SAVE THESE INSTRUCTIONS

For service call 

1-877-282-8684

, or 

1-800-668-1238

in Canada to obtain

a list of authorized service dealers near you. For more details about your
unit, visit our website at 

www.cubcadet.com or www.cubcadet.ca

.

If you have difficulty assembling this product or have any questions
regarding the controls, operation or maintenance of this unit, please
call the Customer Support Department.

DO NOT RETURN THE UNIT TO THE RETAILER.  PROOF OF
PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.

THIS PRODUCT IS COVERED BY ONE OR MORE U.S. PATENTS.
OTHER PATENTS PENDING. 
Service on this unit both within and after the warranty period should
be performed only by an authorized and approved service dealer.

Copy the serial number here:

Copy the model and  parent part number here:

Before beginning, locate the unit’s model plate. It lists the  model and
serial numbers of your unit. Refer to the sample plate below and copy
the information for future reference. 

SPARK ARRESTOR NOTE
NOTE: For users on U.S. Forest Land and in the states of California,
Maine, Oregon and Washington.

All U.S. Forest Land and the state of

California (Public Resources Codes 4442 and 4443), Oregon and
Washington require, by law that certain internal combustion engines
operated on forest brush and/or grass-covered areas be equipped with a
spark arrestor, maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention of fire. Check
with your state or local authorities for regulations pertaining to these
requirements. Failure to follow these requirements could subject you to
liability or a fine. 

This unit is factory equipped with a spark arrestor.

If

it requires replacement, ask your LOCAL SERVICE DEALER to install the

Accessory Part #753-06080 Muffler Assembly

.

CALIFORNIA PROPOSITION 65

WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS

CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE

CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.

In an effort to reduce the impact on the forests, and
reduce carbon and greenhouse gas emissions, MTD
is using less paper by reducing the text size of this
manual.

Summary of Contents for CC4175

Page 1: ...period should be performed only by an authorized and approved service dealer Copy the serial number here Copy the model and parent part number here Before beginning locate the unit s model plate It l...

Page 2: ...he length of the shield This unit has a clutch The cutting attachment remains stationary when the engine is idling If it does not have the unit adjusted by an authorized service technician Adjust the...

Page 3: ...S AWAY WARNING Keep all bystanders especially children and pets at least 50 feet 15 m from the operating area THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY WARNING Small objects can be pr...

Page 4: ...op Fig 10 WARNING OVERFILLING OIL CRANKCASE MAY CAUSE SERIOUS PERSONAL INJURY Check and maintain the proper oil level in the crank case it is important and cannot be overemphasized Check the oil befor...

Page 5: ...ig 24 6 If the level is low add a small amount of oil to the oil fill hole and recheck Fig 24 Repeat this procedure until the oil level reaches the the bottom of the threads in the oil fill hole NOTE...

Page 6: ...e engine will not idle the engine hesitates or stalls on acceleration there is a loss of engine power Have the carburetor adjusted by an authorized service dealer ROCKER ARM CLEARANCE This requires di...

Page 7: ...tank and add fresh fuel Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take to an authorized service dealer for an adjustment Cutting attachment bound with gr...

Page 8: ...8 NOTE...

Page 9: ...ler ce produit ou si vous avez des questions sur les commandes l utilisation ou l entretien de cet appareil veuillez contacter le service la client le NE RETOURNEZ PAS L APPAREIL AU D TAILLANT CHEZ QU...

Page 10: ...mise manches longues Ne portez pas de v tements amples de bijoux de pantalons courts de sandales et ne soyez pas pieds nus Veillez ce que vos cheveux restent au dessus du niveau des paules L cran de l...

Page 11: ...z les pour mettre en garde les autres utilisateurs Si vous pr tez cet appareil quelqu un donnez lui ces consignes CONSERVEZ CES CONSIGNES CONSIGNES DE S CURIT Ce manuel de l utilisateur d crit les sym...

Page 12: ...NER DES BLESSURES GRAVES Nous ne saurions trop insister sur l importance de la v rification du niveau d huile du carter moteur et de son maintien V rifiez l huile avant chaque utilisation et changez l...

Page 13: ...ions de moteurs d outils m caniques de plein air REMARQUE l entretien le remplacement ou la r paration des dispositifs et syst mes antipollution peuvent tre effectu s par tout atelier technicien ou co...

Page 14: ...plus importants pour l entretien Tout manquement l entretien du filtre air peut entra ner une baisse de performances ou causer des d g ts permanents votre moteur 1 Pour ouvrir le filtre air appuyez ve...

Page 15: ...bobine de fil 82 6 mm 3 25 po Diam tre du fil 2 41 mm 0 095 po Diam tre du chemin de coupe 45 7 cm 18 po Type de moteur Refroidi par air 4 temps Cylindr e 25 cc 1 5 po3 R gime de fonctionnement 6 800...

Page 16: ...16 NOTE...

Page 17: ...EE UU y en los estados de California Maine Oregon y Washington Todos los terrenos forestales de los EE UU y el estado de California C digos de Recursos P blicos 4442 y 4443 Oregon y Washington requie...

Page 18: ...de apagar la unidad permanecen calientes durante un tiempo breve LEA TODAS LAS INSTRUCCIONES ANTES DE LA OPERACION Lea todas las instrucciones con cuidado Conozca bien los controles y el uso correcto...

Page 19: ...ecer en este producto Lea el manual del operador para obtener informaci n completa acerca de la seguridad ensamble operaci n y mantenimiento y reparaci n SIMBOLO DE ALERTA DE SEGURIDAD Indica peligro...

Page 20: ...3 Oprima completamente el cebador y su ltelo 10 veces H galo lentamente Se deber ver un poco de combustible en el cebador y en las tuber as de alimentaci n de combustible Fig 11 Si no puede ver el co...

Page 21: ...TE DECORATIVO El recorte decorativo se realiza eliminando toda la vegetaci n de alrededor de los rboles postes cercos etc Gire toda la unidad a modo de que el accesorio de corte se ubique a un ngulo d...

Page 22: ...la botella Fig 26 Mida el nivel con la varilla de medici n Si el nivel est bajo agregue una peque a cantidad de aceite y vuelva a medir Fig 25 No lo llene demasiado 5 Vuelva a colocar el tap n de rell...

Page 23: ...eparaci n de la buj a de encendido 0 025 pulg 0 635 mm Lubricaci n Aceite SAE 30 Capacidad de aceite del c rter del cig e al 2 2 onzas fluidas 60 ml Combustible Sin plomo Carburador Diafragma multipos...

Page 24: ...arantie expresse crite ci dessus concernant les pi ces qui sont identifi es Aucune autre garantie ou caution expresse crite ou orale l exception de celle mentionn e ci dessus accord e par toute person...

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