Komatsu — CONTENTS

CONTENTS CAB DOOR HOLD OPEN LOCK - IF EQUIPPED ............... AIR CLEANER SERVICE INDICATOR ....................... FRAME LOCKING BAR ................................... MAIN CIRCUIT BREAKER ................................ FUSE BOXES .......................................... OPERATOR’S SEAT ..................................... FORWARD-BACKWARD ADJUSTMENT. ................. SEAT ANGLE ADJUSTMENT. .......................... WEIGHT ADJUSTMENT ............................... BACKREST TILT ADJUSTMENT ........................ HEIGHT ADJUSTMENT ............................... RIGHT SIDE ARMREST .................................. HEIGHT ADJUSTMENT ...............................

ANGLE ADJUSTMENT ................................ SEATBELT.. .......................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27 . . 2-28 . . . 2-28 . . 2-28 . . . 2-29 . . 2-32 . . 2-32 . . 2-32 . . 2-32 . . . 2-32 . . . 2-32 . . 2-32 . . 2-32 . . . 2-32 . . 2-33 CAB HEATER AND DEFROSTER - IF EQUIPPED. .. CONTROL PANEL. ........................ FAN SPEED SWITCH ................... TEMPERATURE CONTROL KNOB ........

AIR INTAKE SELECTOR KNOB ........... METHOD OF OPERATION .................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34 . . . 2-34 . . . 2-34 . . . 2-34 . . . 2-34 . . . 2-35 . . . . . . . . . . . . . . . . . . . . . . . . . CAB HEATER, DEFROSTER AND AIR CONDITIONER - IF EQUIPPED CONTROL PANEL. ...................................... FAN SPEED SWITCH ................................. AIR INTAKE SELECTOR KNOB ......................... AIR CONDITIONER SWITCH ........................... TEMPERATURE CONTROL KNOB ...................... METHOD OF OPERATION ................................ PRECAUTIONS FOR USING AIR CONDITIONER ..........

HANDLING AIR CONDITIONER IN SEASON .............. HANDLING AIR CONDITIONER IN OFF-SEASONS ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36 . . . 2-36 . . 2-36 . . 2-36 . . 2-36 . . . 2-36 . . . 2-37 . . 2-38 . . 2-38 . . 2-38 LOCKING FILLER CAPS ..................................... FUEL TANK FILLER CAP ................................. HYDRAULIC TANK FILLER CAP ........................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39 . . 2-39 . . 2-40 CHECKS BEFORE STARTING ENGINE.

........................ WALK AROUND CHECK. ................................. CHECKS BEFORE STARTING ............................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41 . . 2-41 . . . 2-41 OPERATING MACHINE. . . . . . . . . . . . . . . . . . . . . OPERATIONS BEFORE STARTING ENGINE . . . STARTING ENGINE . . . . . . . . . . . . . . . . . . . . NORMAL STARTING . . . . . . . . . . . . . . . . SPECIAL STARTING . . . . . . . . . . . . . . . . COLD WEATHER STARTING . . . . . . . . . . . OPERATIONS AFTER STARTING ENGINE . . . . . COLD WEATHER WARM-UP PROCEDURE , . . . . MOVING MACHINE OFF . . . . . . . . . . . . . . . . . . . . SHIFTING GEAR . . . _ . . . . . . . . .

. . . . . . . . . . . SHIFTING BETWEEN FORWARD AND REVERSE STEERING MACHINE . . . . . . . . . _ . . . . . . . . . . . STOPPING MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . 2-42 . . 2-42 . . 2-44 . . 2-44 . . 2-44 . . 2-45 . . 2-46 . 2-46 . . 2-47 . 2-49 . . 2-50 . . . 2-50 . . 2-51 . . . . . . . . . . . . . . . . . . . . . . . . . O-8