MULTIQUIP DFG Series User manual

OPERATION AND PARTS MANUAL
Electric, Gasoline and Propane Converted
Crack Saw
Model CS8 Series
Revision #4
(
05/28/09
)
Electric and Gasoline
Surface Grinders
Model DFG Series
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES
To find the latest revision of this
publication, visit our website at:
www.multiquip.com

TABLE OF CONTENTS
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 3
MULTIQUIP DFG SERIES SURFACE GRINDERS
Table Of Contents................................................................................................................................. 3-4
Parts Ordering Procedures ................................................................................................................... 6
Notice to Operators............................................................................................................................... 7-8
Operator Instructional Data Sheet ........................................................................................................ 9
Safety Precautions................................................................................................................................ 10
Preparation ........................................................................................................................................ 10-11
Operation ........................................................................................................................................... 12-13
Maintenance, Repair and Storage..................................................................................................... 13-14
Assembly .............................................................................................................................................. 15
Removing the SURFACE GRINDER from the Pallet ........................................................................ 15
Installing the SSG24-1000 Safety and Dust Shield Assembly Kit..................................................... 16
Before Starting the Engine.................................................................................................................... 17
Filling the Engine Crankcase with Oil ................................................................................................ 17
Filling the DFG/G Series Engine Fuel Tank ...................................................................................... 17
Assembly Instructions/Operation.......................................................................................................... 18
Theory of Operation........................................................................................................................... 18
Multi-Accessory Attachments and Applications................................................................................. 19-26
Installing a Multi-Accessory Attachment (not including multi-segmented, dry diamond discs)
in the counter-rotating discs............................................................................................................... 26-27
Removing a Multi-Accessory Attachment (not including multi-segmented, dry diamond discs)
from the counter-rotating discs .......................................................................................................... 28-29
Transporting the Surface Grinder ...................................................................................................... 29
Adjusting the Operator Handle Height............................................................................................... 30
Starting the DFG/E Series Electrically Powered Surface Grinder On the Job Site........................... 30-32
Starting the DFG/G Series Gasoline Powered Surface Grinder On the Job Site ............................. 32-33
Operating the Surface Grinder on the Job Site ................................................................................. 33-36
Stopping the DFG/E Electrically Powered Surface Grinder .............................................................. 36
Stopping the DFG/G Gasoline Powered Surface Grinder ................................................................. 36
Operational Parameters and Techniques for DFG Series Surface Grinder’s ................................... 36-39

TABLE OF CONTENTS
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 4
Maintenance/Service ............................................................................................................................ 40
Preventative Maintenance Check List ............................................................................................... 40
Checking V-Belt Tension and Alignment ........................................................................................... 40
Installing a Replacement V-Belt or Centrifugal Clutch or Pulley ....................................................... 41-43
Replacing the LORD® Type Elastomeric Mounts on the Multi-Accessory Discs.............................. 44
Lubrication Requirements.................................................................................................................. 45
Electric Motor Service........................................................................................................................ 46
Engine Service................................................................................................................................... 46
Troubleshooting .................................................................................................................................... 47
Electric Motor..................................................................................................................................... 47
Gasoline Engine.................................................................................................................................... 47-48
Storage ................................................................................................................................................. 49
Specifications........................................................................................................................................ 50
Explanation of Code In Remarks Column ............................................................................................ 52
Suggested Spare Parts......................................................................................................................... 53
Component Parts Drawings
Operator Handle Assembly (Electric) ................................................................................................ 54-55
Operator Handle Assembly (Gasoline).............................................................................................. 56-57
Electric Motor Assembly .................................................................................................................... 58-59
Gasoline Engine Assembly................................................................................................................ 60-61
Wheel Assembly ................................................................................................................................ 62-63
Transmission Assembly..................................................................................................................... 64-65
Head Assembly.................................................................................................................................. 66-67
Safety and Shield Assembly.............................................................................................................. 68-69
Scarifier Assembly ............................................................................................................................. 70-71
SCRAPE-R-TACH ............................................................................................................................. 72-73
Grinder Block Assembly .................................................................................................................... 74-75
Decals ................................................................................................................................................ 76-77
Terms and Condition of Sale —Parts ................................................................................................ 78

DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 5
NOTE PAGE

PARTS ORDERING PROCEDURES
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 6
www.multiquip.com
Ordering parts has never been easier!
Choose from three easy options:
WE ACCEPT ALL MAJOR CREDIT CARDS!
When ordering parts, please supply:
❒Dealer Account Number
❒Dealer Name and Address
❒Shipping Address (if different than billing address)
❒Return Fax Number
❒Applicable Model Number
❒Quantity, Part Number and Description of Each Part
❒Specify Preferred Method of Shipment:
✓ UPS/Fed Ex ✓DHL
■Priority One ✓Tr uck
■Ground
■Next Day
■Second/Third Day
If youhave an MQ Account, to obtain aUsername
and Password, E-mail us at: parts@multiquip.
com.
To obtain an MQ Account, contact your
District SalesManager for more information.
Order via Internet (DealersOnly) :
Order partson-line using Multiquip’s SmartEquip website!
■View PartsDiagrams
■Order Parts
■Print Specification Information
Note: DiscountsAre Subject To Change
Goto www.multiquip.com and click on
Order Parts
to log in and save!
Use the internet and qualify for a5% Discount
on Standard orders for all orderswhich include
complete part numbers.*
Order via Fax (DealersOnly) :
All customersare welcome to order partsviaFax.
Domestic (US) Customersdial:
1-800-6-PARTS-7 (800-672-7877)
Fax your order in and qualify for a2% Discount
on Standard orders for all orderswhich include
complete part numbers.*
Order via Phone:
Domestic (US) DealersCall:
1-800-427-1244
Best Deal!
International Customers should contact
their local Multiquip Representativesfor
PartsOrdering information.
Non-Dealer Customers:
Contact your local Multiquip Dealer for
partsor call 800-427-1244 for help in
locating adealer near you.
Note: DiscountsAre Subject To Change
Effective:
January 1
st
, 2006
NOTICE
All ordersare treated as Standard Orders and will
ship the same day if received prior to 3PM PST.

NOTICE TO OPERATORS
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 7
IF YOU CAN NOT READ OR DO NOT FULLY UNDERSTAND THE CONTENTS OF THIS
MANUAL, PLEASE CONTACT THE FACTORY FOR PROPER ASSISTANCE BEFORE
ATTEMPTING TO OPERATE THIS PRODUCT.
SI TU NO PUEDES LE'ER O NO COMPRENDES EL CONTENIDO DE ESTE MANUAL
FAVOR DE PONERSE EN CONTACTO CON LA. FABRICA PARA ASSISTENCIA- A
PROPIA ANTES DE INTENTAR PARA OPERAR ESTE PRODUCTO.
SOLLTEN SIE DIESE GEBRAUCHSANWEISUNG NICHT LESEN KOENNEN ODER ES
NICHT VOLLKOMMEN VERSTEHEN, WENDEN SIE SICH BITTE AN DEN HERSTELLER
FUER RICHTIGE HILFE EHE SIE VERSUCHEN DIESES PRODUKT ZU OPERIEREN.
SI VOUS NE LISEZ OU NE COMPRENDRE ENTIEREMENT LES MATIERES DE CE
MANUEL, S'IL VOUS PLAIT, CONTACTEZ L'USINE POUR L'ASSISTANCE APPROPRIEE
AVANT D'UTILISER LE PRODUIT.
These safety alert symbols identify important safety messages in this manual. When you see these symbols, be
alert to the possibility of personal injury and carefully read the message that follows.
Do not allow anyone to operate the SURFACE GRINDER without first reading this Operator Manual and
becoming familiar with its operation. The manufacturer of the SURFACE GRINDER has gone to great extremes to
provide the owner(s) and/or operator(s) with the finest equipment available for its intended job function of
removing covering materials from concrete and wood floor surfaces. Yet, the possibility exists that the SURFACE
GRINDER can be utilized in and/or subjected to job applications not perceived and/or anticipated by the
manufacturer. Such misuse and/or misapplication of the SURFACE GRINDER can lead to the possibility of
serious damage, injury or even death. It is the responsibility of the owner(s) and/or operator(s) to determine that
the SURFACE GRINDER is being utilized and/or operated within the scope of its intended job function. It is the
responsibility of the owner(s) and/or operator(s) to establish, monitor and constantly upgrade all safety programs
and/or practices utilized in and for the operation of the SURFACE GRINDER. The purpose of such programs is to
provide for owner(s') and/or operator(s') safety. Operators must be instructed to recognize and avoid unsafe
conditions associated with their work (29 CFR 1926.21 (b)(2)) and/or applicable updated revisions. It is the
responsibility of the owner(s) and/or operator(s) to determine that no modifications and/or alterations have been
made to the SURFACE GRINDER. Modifications and/or alterations can lead to the possibility of serious damage,
injury or even death. It is the responsibility of the owner(s) and/or operator(s) to make this Operator Manual
available for consultation during all phases of operation. Refer to OSHA 2207 and/or applicable updated revisions
which contains all OSHA job safety and health rules and regulations (1926 and 1910) covering construction.
DANGER
CAUTION

NOTICE TO OPERATORS
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 8
The concept of powered SURFACE GRINDER has been successfully utilized for many years as a practical
solution to many types of surface preparation requirements. The basic concept is proven and well
accepted within the associated marketplaces. Use of a SURFACE GRINDER requires strenuous work
activity. This type of work activity can be considered to be greater in magnitude than that experienced
with the use of many other types of both light construction and lawn and garden related equipment. This
type of work activity should only be attempted by operators of adequate physical size and stature, mental
awareness and physical strength and condition. The body parts most noticeably affected during any
specific process are the arms, hands, wrists, shoulders, lower back and legs. The process can also
produce excessive stress/strain directly to the back muscles, spinal vertebrae and many other body
parts. Back related pain can be a side effect of utilizing a SURFACE GRINDER. An operator with a chronic
back related problem or a history of back and/or other medically related problems should not attempt to
utilize the SURFACE GRINDER. Use of the SURFACE GRINDER may only aggravate this and any other
medically related problem. Because of the diverse type of prevailing job applications, job site conditions,
operator experience levels and operator physical characteristics, no warranty, guarantee, representation
and/or liability is made by the manufacturer as to the absolute correctness or sufficiency of any
operational procedure, operational position and/or technique. There is no absolute guarantee that an
operator of any given experience level, physical size and/or physical condition will be immune to the
possibility of and/or probable physical side effects of the normal use of the SURFACE GRINDER. Each
potential operator must be made aware of and assume the operational and physical liability described
and/or associated with the use of the SURFACE GRINDER. Improper use of the SURFACE GRINDER can
result in property damage and/or personal injury, including death. Each potential operator not willing to
assume the operational and physical liability described and/or associated with the use of the SURFACE
GRINDER, should not operate it. Proper levels of operator experience, skill and common sense are
essential for maximizing the safe and efficient operation of the SURFACE GRINDER.
Record the SURFACE GRINDER and electric motor serial numbers in the spaces provided below.
_______________ Model Number
_______________ Serial Number
_______________ Electric Motor Serial Number
_______________ Date of Purchase
Specifications and design are subject to change without notice or obligation. All specifications are general in
nature and are not intended for specific application purposes. Multiquip, Inc. reserves the right to make changes
in design, engineering or specifications and to add improvements or discontinue manufacture at any time without
notice or obligation. Multiquip, Inc. and its agents accept no responsibility for variations which maybe evident in
actual products, specifications, pictures and descriptions contained in this publication.
CAUTION

OPERATOR INSTRUCTIONAL DATA SHEET
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV. #4 (05/28/09) PAGE 9
The following undersigned operators of the SURFACE GRINDER described and/or pertaining to this Operator
Manual have received formal safety and operational information/instruction from the undersigned
owner(s)/instructor(s) in accordance to OSHA 29 CFR 1926.21 (b)(2) and/or applicable updated revisions
pertaining to, but not necessarily limited to the:
1) READING, COMPREHENSION AND ACKNOWLEDGEMENT OF THE MATERIAL COMPRISING THE
ENTIRE CONTENTS OF THE APPLICABLE OPERATOR MANUAL AND APPLICABLE SAFETY AND
OPERATIONAL INFORMATION VIDEO TAPE FOR THE SURFACE GRINDER.
2) FORMALIZED OPERATOR SAFETY PROGRAM TO BE DEVISED BY THE OWNER OF THE SURFACE
GRINDER IN CONJUNCTION WITH THE CONTENTS OF THE APPLICABLE OPERATOR MANUAL AND
THE APPLICABLE SAFETY AND OPERATIONAL INFORMATION VIDEO TAPE FOR THE SURFACE
GRINDER AND THE APPLICABLE MATERIAL INCLUDED IN THE NATIONAL ELECTRICAL CODE®.
3) OSHA AND NATIONAL ELECTRIC CODE® RULES AND REGULATIONS RESEARCHED FOR AND/OR
BY THE OWNER OF THE SURFACE GRINDER AND DEEMED APPLICABLE TO THE SAFE AND
PROPER USE AND/OR OPERATION OF THE SURFACE GRINDER FOR ANY SPECIFIC JOB
APPLICATION.
4) LOCAL LAWS, REGULATIONS AND CUSTOMS RESEARCHED FOR AND/OR BY THE OWNER OF THE
SURFACE GRINDER AND DEEMED APPLICABLE TO THE SAFE AND PROPER USE AND/OR
OPERATION OF THE SURFACE GRINDER FOR ANY SPECIFIC JOB APPLICATION.
5) FORMALIZED MAINTENANCE PROGRAM FOR THE SURFACE GRINDER TO BE DEVISED BY THE
OWNER OF THE SURFACE GRINDER IN ACCORDANCE WITH, BUT NOT NECESSARILY LIMITED TO,
THE SPECIFICATIONS, GUIDELINES AND OPERATIONAL INFORMATION CONTAINED IN THE
APPLICABLE OPERATOR MANUAL.
6) COMPREHENSIVE OPERATIONAL INSTRUCTIONS FOR THE CORRECT AND PROPER USE OF THE
SURFACE GRINDER AS PER THE CONTENTS OF THE APPLICABLE OPERATOR'S MANUAL, SAFETY
AND OPERATIONAL INFORMATION VIDEO TAPE AND APPLICABLE MATERIAL INCLUDED IN THE
NATIONAL ELECTRIC CODE®.
_______________ Operator _______________ Owner/Instructor __________ Date
_______________ Operator _______________ Owner/Instructor __________ Date
_______________ Operator _______________ Owner/Instructor __________ Date
_______________ Operator _______________ Owner/Instructor __________ Date
_______________ Operator _______________ Owner/Instructor __________ Date
_______________ Operator _______________ Owner/Instructor __________ Date
NOTE: INSERT COPIES OF THIS PAGE WITHIN THE OPERATOR'S MANUAL IF SPACE FOR ADDITIONAL
OPERATORS IS REQUIRED.

SAFETY PRECAUTIONS
DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV #4 (05/28/09) PAGE 10
THE FOLLOWING SAFETY PRECAUTIONS
PROVIDE SOME COMMON SENSE GUIDES TO
PROMOTE SAFETY AND EFFICIENCY WITH THE
SURFACE GRINDER. NO WARRANTY,
GUARANTEE OR REPRESENTATION IS MADE
BY THE MANUFACTURER AS TO THE
ABSOLUTE CORRECTNESS OR SUFFICIENCY
OF ANY INFORMATION OR STATEMENT. THESE
SAFETY PRECAUTIONS ARE INTENDED TO
DEAL PRINCIPALLY WITH COMMON
PRACTICES AND CONDITIONS ENCOUNTERED
IN THE USE OF THE SURFACE GRINDER AND
ARE NOT INTENDED TO BE ALL INCLUSIVE.
PROPER LEVELS OF OPERATOR EXPERIENCE,
SKILL AND COMMON SENSE ARE ESSENTIAL
FOR SAFE AND EFFICIENT OPERATION.
THE ENGINE EXHAUST FROM THIS PRODUCT
CONTAINS CHEMICALS KNOWN TO THE STATE
OF CALIFORNIA TO CAUSE CANCER, BIRTH
DEFECTS OR OTHER REPRODUCTIVE HARM.
THIS STATEMENT IS MADE IN COMPLIANCE TO
CALIFORNIA PROPOSITION 65.
INCORRECT USE OF THE SURFACE GRINDER
CAN RESULT IN PROPERTY DAMAGE,
PERSONAL INJURY OR EVEN DEATH. TO
REDUCE THIS POSSIBILITY, GIVE COMPLETE
AND UNDIVIDED ATTENTION TO THE JOB AT
HAND AND FOLLOW THESE SAFETY
PRECAUTIONS:
PREPARATION.
1) This SURFACE GRINDER is specialized type of
powered equipment, designed for aspecific job
function and requires adequate and thorough
instruction BEFORE it is operated. The size,
power, complexity and operating characteristics
of this type of powered equipment would dictate
that each operator must receive adequate,
professional instruction regarding the proper
operation of this SURFACE GRINDER before
being allowed to utilize it. BEFORE attempting to
utilize this SURFACE GRINDER, read this
Operator's Manual, the applicable Safety and
Operating Information Video Tape and the
material supplied by the engine manufacturer to
familiarize each operator with its correct
operating procedures. Avoid the urge not to take
the necessary time to read this Operator's
Manual before operating the SURFACE
GRINDER. DO NOT OPERATE THE SURFACE
GRINDER UNTIL EACH OPERATOR
COMPLETELY COMPREHENDS THE
CONTENTS OF THIS MANUAL AND THE
APPLICABLE SAFETY AND OPERATIONAL
INFORMATION VIDEO TAPE.
2) Develop acomprehensive program for the safe
operation of the SURFACE GRINDER by its
owner(s) and/or operator(s). Such aprogram will
include, but is not limited to: instructional
requirements for operation, applicable OSHA
requirements, local laws and regulations, job site
safety and aSURFACE GRINDER maintenance
program. Constantly examine and upgrade this
program to guarantee owner(s) and/or
operator(s) safety. Each operator must be fully
instructed regarding the specifics of this safety
program.
3) Determine that the SURFACE GRINDER is in its
original, factory configuration and has not been
modified in any manner. Many modifications can
result in potentially dangerous configurations
that can lead to property damage and/or
personal injury. If there are any questions about
possible modifications made to the SURFACE
GRINDER, contact the Customer Service
Department for specific information BEFORE
utilization. There is no charge for this service.
Do not operate the SURFACE GRINDER
without the use of the original equipment V-belt
guard. Use of the SURFACE GRINDER without
an approved belt guard can lead to property
damage and/or personal injury.
4) Minors should never be allowed to operate the
SURFACE GRINDER. Bystanders, especially
children and animals, should not be allowed in
the areawhere the SURFACE GRINDER is in
use. The grinding process can result in flying
particles being emitted at high velocity and
striking the operator and/or onlookers. This can
lead to the possibility of property damage and/or
personal injury. Keep all body parts, loose
clothing, foreign objects and onlookers clear of
the rotating discs, multi-accessory attachments
and flying particles.
5) Operators must be in adequate physical
condition, mental health and not under the
influence of any substance (drugs, alcohol, etc.)
which might impair vision, dexterity or judgment.
Working with the SURFACE GRINDER is
strenuous. If you have any condition that might
be aggravated by strenuous work, check with
your doctor BEFORE operating the SURFACE
DANGER
DANGER
DANGER