TEN00146-02 PC1250,1250SP,1250LC-8 CRAWLER EXCAVATORS

COVER

TEN00146-02 HYDRAULIC EXCAVATOR PC1250 -8 PC1250SP -8 PC1250LC -8 SERIAL NUMBERS 30001 and up Komatsu has Operation & Maintenance Manuals written in some other languages . If a foreign language manual is necessary , contact your local distributor for availability . WARNING Unsafe use of this machine may cause serious injury or Death. Operators and maintenance personnel must read this manual before operating or maintaining this machine . This manual should be kept near the machine for reference and periodically reviewed by all personnel who will come into contact with it . NOTICE

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FOREWORD

. FOREWORD FOREWORD use this machine safely and effectively. The performing operation and maintenance. Most rules for the operation and maintenance of conditions that may cause a hazard when WARNING 1 - 2 FOREWOR This manual prov precautions in thi accidents are cau machines. Accid performing operati on and maintenan idelin followed to follow at all t imes when llow fundamental prevented knowin Before beginning op eration or maintenan ce, operators and m aintenance personnel must always observ e the following points.

Read this manual thoroughly and und erstan d its contents Read the safety m essages and safety labels given in this manual carefully so that they should be un Keep this manual at the storage location for the Operation a nd Maintenance Manual given below so th at all personnel involve in working on the ma chine can consult it periodicall In case this manual s hould be lost or dam aged, immediately contact Komats u or your Komatsu distribut or to obtain a new copy When you sell the m achine, make sure th at this manual shou ld be p rovided t o the new owner together In this manual, meas urements are expres sed in international standar d units ( SI).

For the reference purpo se, weight units used i the past are also dis played in ( ). Storage location fo r the Operation a nd Maintenance M anual

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SAFETY INFORMATION

. FOREWORD SAFETY INFORMATION Signal words Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a WARNING indicate precautions that should be followed to 1 - 5 SAFETY INFORMATIO To enab le you t o use t his machine s afely, safe ty precautions and labels are g iven in t his manual and affi xed to the machine giv such situation The ord persona l injury or damage In this m anual a nd on machine labe ls, the following signa l words are used to express th e potentia l level of hazard potentially hazardou s situatio n which, if not avoide d, may re sult in minor or jury. This word is us ed also t o alert agai nst unsafe practices that m ay cause mage.

Example of safety message u sing signa When sta nding up from t he o perator's s eat, always place the lo ck lever in the LOCK p osition. If y ou acc identally touch the control lev ers when th ey are not lo cked, this may cause a serious injury or deat Other sig nal word In additi on to th e above, t he follow ing signal word s are used to protect t he machine o r to give infor mation that is useful t o know. is word is used for p recautions that mus t be taken to avoid actions whi ch coul d shorten life of th e machine. is word is used for in formation that is us eful to kno

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SAFETY INFORMATION

. FOREWORD SAFETY INFORMATION Safety labels Example of safety label using words 1 - 6 Safety labels are af fixed to the machine to inform t he operator or maintenan ce worker on the sp ot when carrying out operation or mainte nance of the machine that ma y involve hazard . This machine uses "Safety labels using words" an d "Safety labels using pi ctograms" to indicat e safety procedures. Safety labels using pi ctogram use a picture to express a level of hazardous Safety pictograms condition equivalen t to the signal word. These s afety pictograms use pictures in ord er to let the operator or mai ntenance worker understand the lev el and type of hazardous cond ition at all times.

Safety pictograms show the type of hazardous co ndition at the t op or left side, and the method of avoiding the hazar dous condition at the bottom or rig ht side. In addition, the typ e of hazardous condition is display ed inside a triangle and the m ethod of avoiding the hazardous con dition is shown inside a circle . potentia aintenance. Therefore, the safe ty messages in this manual an d on the machine may no t include a ll possibl e safety precautions. If any procedureso r actions not specifically recom mendedor allowed in this manual ar e used, it is your r esponsibility to take the necess ary steps to ensure safety.

In no event should you engage in prohibited use s or actions described in this manua The explanations, values, and illustrations in this manual were prepared b ased on th e latest i nformation available at that time. Contin uing improvements in the de sign of this machine can lead to ch anges in detail which may not be reflected in this manual. Consult Komatsu or y our Komatsu distributor f or the lates t availabl e information of y our machine or for que stions regarding information in this manual . The numbers in cir cles in the illustrations corresp ond to the numbers in ( ) in the tex t. (For e xample: 1 ! (1)

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