Bobcat 721 Operation & Maintenance Manual - PDF DOWNLOAD

Bobcat 721 Operation & Maintenance Manual - PDF DOWNLOAD

FILE DETAILS:

Bobcat 721 Operation & Maintenance Manual - PDF DOWNLOAD

Language : English
Pages : 58
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Bobcat 721 Operation & Maintenance Manual - PDF DOWNLOAD

OPERATOR SAFETY WARNINGS 3
FOREWORD 5
CONTENTS 5
721 BOBCAT LOADER PICTORIAL NOMENCLATURE 6
OPERATING INSTRUCTIONS 7
OPERATING INSTRUCTIONS 9
SAFETY 9
MOUNTING AND DISMOUNTING 9
DASH PANEL 9
OPERATOR CONTROLS 10
Throttle Control 10
Range Control 10
Parking Brake 10
Steering Controls 10
LIFT, TILT AND AUXILIARY CONTROLS 11
PRE-STARTING INSPECTION 12
STARTING PROCEDURE 12
NORMAL STARTING CONDITIONS 12
COLD WEATHER STARTING CONDITIONS 12
BUCKET SIZE 13
TO OPERATE THE BOBCAT 13
FILLING BUCKET FROM A PILE 14
OPERATION HINTS 14
DIGGING WITH THE BUCKET 14
LEVELING AND BACKFILLING 15
DUMPING THE BUCKET 15
TOWING 15
TRANSPORTING BY PICKUP 16
TRANSPORTING BY TRAILER 16
PREVENTIVE MAINTENANCE 17
SERVICE & MAINTENANCE 18
PREVENTIVE MAINTENANCE 19
ROPS ENCLOSURE 20
Tilting The ROPS 20
BOB-TACH 20
PIVOT PINS 20
WHEEL TORQUING 20
TIRES 20
TIRE MAINTENANCE 21
TIRE ROTATION 21
TIRE REPLACEMENT 21
LUBRICATION OF LOADER 21
ENGINE SERVICE 22
Fuel System 22
ENGINE FUEL 22
AIR VENTING THE FUEL SYSTEM 22
CHANGING ENGINE OIL 23
OIL SPECIFICATIONS 23
ENGINE OIL FILTER 23
CRANKCASE BREATHER 24
ENGINE AIT INLET SYSTEM (Air Cleaner) 24
ENGINE COOLING SYSTEM 25
ELECTRICAL SYSTEM 25
HYDRAULIC SYSTEM 26
TRANSMISSION FLUID FILTERS 27
HYDRAULIC / HYDROSTATIC TRANSMISSION FLUID 27
CHECKING AND ADDING FLUID 28
DRAINING THE FLUID RESERVOIR 28
QUICK COUPLERS 28
HYDRAULIC SYSTEM LEAKS 28
HYDROSTATIC TRANSMISSION DRIVE SYSTEM 29
MAINTENANCE OF HYDROSTATIC TRANSMISSION 29
REPLACEMENT OF 10 MICRON FILTER 29
AIR IN SYSTEM 29
OVERHEATING 30
CONTROL LINKAGE 30
MECHANICAL TRANSMISSION (CHAIN REDUCTION) 30
PARKING BRAKE 30
TROUBLESHOOTING 31
TROUBLESHOOTING THE ENGINE 33
TROUBLESHOOTING THE HYDRAULIC SYSTEM 34
TROUBLESHOOTING THE HYDROSTATIC TRANSMISSION 35
MAJOR PARTS 39
MAIN FRAME PARTS 41
MAIN FRAME, OVERHEAD GUARD AND FUEL TANK 42
DRIVE SYSTEM 43
BRAKE & AXLE ASSEMBLIES 44
HYDRAULIC SYSTEM 45
HYDROSTATIC SYSTEM 46
TWO-SPEED & STEERING LINKAGE 47
ELECTRICAL SYSTEM 48
ENGINE AND ATTACHING PARTS 49
ENGINE SHROUDING 50
DECALS 51
GENERAL INFORMATION 53
LOADER SPECIFICATIONS 55
OPERATIONAL & PERFORMANCE 55
ENGINE 55
LOADER HYDRAULICS 55
ELECTRICAL 55
POWER TRAIN 55
CAPACITY 55
TIRES 55
MACHINE WEIGHT 55
MACHINE TORQUES 56
PRE-DELIVERY INSPECTION 56
DELIVERY REPORT 56
THIRTY HOUR INSPECTION 56
WARRANTY 57

DESCRIPTION:

Bobcat 721 Operation & Maintenance Manual - PDF DOWNLOAD

FOREWORD:

• This book is written to give the owner/operator necessary operating, routine servicing and preventive maintenance instructions for the Model 721 Bobcat.
• Read this manual thoroughly and become completely familiar with the operation of the machine before proceeding with operating and servicing.
• To locate desired section, place thumb on respective tab and flip pages until corresponding section tab is reached. For any additional information required, please refer to your Bobcat Dealer.
• Maintenance which is beyond the scope of this manual should not be attempted by anyone other than qualified, authorized Melroe Dealer Servicing personnel.

SAFETY:

• To avoid injury to the operator, safety precautions must be observed when operating the Bobcat. Study the items inside the front cover of this manual. This machine should always be shut down and Fig. 1 Safety Steps B-1805 the bucket completely lowered before leaving the seat.
• If checks are to be made which require the machine to be running, it must be first raised and blocked so that all four wheels are off the ground. Fueling operations must be made only in a well ventilated area, which is free of sparks and open flame, after the engine has cooled.

OPERATORS CONTROLS: Throttle Control:

• The throttle control is located to the right and front of the seat (Fig. 4). Engine speed is increased by moving the throttle control forward and decreased by moving it to the rear. Pulling the throttle all the way to the rear stops the engine.

Range Control:

• The speed range control is located on the right side of the seat (Fig. 4). Push the lever forward for high range and pull back for low range. This control will shift the machine into high speed range for road travel and low speed range for work operation. The range control may be shifted while machine is in motion.

Parking Brake:

• The parking brake lever (Fig. 5) should be used whenever the Bobcat is stopped and parked and before starting the engine. To set the brake, pull fully back on lever. To release the brake, press down on the button on top of the lever. Always release the brake before operating the loader.

G.B 10/03/25