Multiquip SFG10E User Manual

OPERATION AND PARTS MANUAL

MODEL SFG10E

ELECTRIC SURFACE GRINDER

Revision #2 (05/28/09)

To find the latest revision of this

publication, visit our website at:

www.multiquip.com

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

SILICOSIS/RESPIRATORY WARNINGS

WARNING

SILICOSIS WARNING RESPIRATORY HAZARDS

Grinding/cutting/drilling of masonry, concrete, metal and
other materials with silica in their composition may give
off dust or mists containing crystalline silica. Silica is a
basic component of sand, quartz, brick clay, granite and
numerous other minerals and rocks. Repeated and/or
substantial inhalation of airborne crystalline silica can
cause serious or fatal respiratory diseases, including
silicosis. In addition, California and some other
authorities have listed respirable crystalline silica as a
substance known to cause cancer. When cutting such
materials, always follow the respiratory precautions
mentioned above.

WARNING

Grinding/cutting/drilling of masonry, concrete, metal and
other materials can generate dust, mists and fumes
containing chemicals known to cause serious or fatal
injury or illness, such as respiratory disease, cancer,
birth defects or other reproductive harm. If you are
unfamiliar with the risks associated with the particular
process and/or material being cut or the composition of
the tool being used, review the material safety data
sheet and/or consult your employer, the material
manufacturer/supplier, governmental agencies such as
OSHA and NIOSH and other sources on hazardous
materials. California and some other authorities, for
instance, have published lists of substances known to
cause cancer, reproductive toxicity, or other harmful
effects.

Control dust, mist and fumes at the source where
possible. In this regard use good work practices and
follow the recommendations of the manufacturers or
suppliers, OSHA/NIOSH, and occupational and trade
associations. Water should be used for dust
suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mists and fumes cannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHA for
the materials being used.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 2

Electric Surface Grinder

TABLE OF CONTENTS

SFG10E

Silicosis/Respiratory Warnings .................................. 2

Table Of Contents ..................................................... 3

Parts Ordering Procedures ....................................... 4

Notice to Operators ................................................ 5-6

Operator Instructional Data Sheet ............................ 7

Safety Precautions ............................................... 8-11

Assembly Instructions/Operations ..................... 12-31

Maintenance/Service ......................................... 32-35

Troubleshooting ...................................................... 36

Storage ................................................................... 37

Specifications .......................................................... 38

Explanation Of Code In Remarks Column .............. 40

Suggested Spare Parts ........................................... 41

Operator Handle Assembly ................................ 42-43

Electric Motor Assembly..................................... 44-45

Wheel Dolly Assembly........................................ 46-47

Frame Assembly ................................................ 48-49

Safety and Dust Shield Assembly ...................... 50-51

Scarifier Assembly ............................................. 52-53

Scrape-R-Tach Assembly .................................. 54-55

Grinding Block Assembly ................................... 56-57

Decals ................................................................ 58-59

As a continuing effort to update our parts
book, contact the MULTIQUIP literature
department for the latest revision of your
"Operation and Parts Manual"

Specification and part number are subject
to change without notice.

Terms and Conditions of Sale ................................. 60

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 3

PARTS ORDERING PROCEDURES

Ordering parts has never been easier!

Choose from three easy options:

January 1

Effective:

st

, 2006

Best Deal!

Order via Internet (Dealers Only):

Order parts on-line using Multiquip’s SmartEquip website!

■ View Parts Diagrams

■ Order Parts

■ Print Specifi cation Information

Goto www.multiquip.com and click on

Order Parts

Order via Fax (Dealers Only):

All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)

Non-Dealer Customers:
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.

to log in and save!

Order via Phone:

If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.

com.

To obtain an MQ Account, contact your
District Sales Manager for more information.

Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*

Note: Discounts Are Subject To Change

Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*

Note: Discounts Are Subject To Change

Domestic (US) Dealers Call:

1-800-427-1244

International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.

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

NOTICE

All orders are treated as Standard Orders and will

ship the same day if received prior to 3PM PST.

❒ Specify Preferred Method of Shipment:
✓ UPS/Fed Ex ✓ DHL

■ Priority One ✓ Truck

■ Ground

■ Next Day

■ Second/Third Day

www.multiquip.com

WE ACCEPT ALL MAJOR CREDIT CARDS!

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 4

NOTICE TO OPERATORS

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.

DANGERDANGER

DANGER

DANGERDANGER

You WILL be

KILLED

or

SERIOUSLY

injured if you DO

NOT follow directions.

CAUTION

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

You CAN be

INJURED

if you DO NOT follow directions.

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.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 5

NOTICE TO OPERATORS

The concept of powered SURFACE GRINDER has
been successfully utilized for many years as a
practical solution to many types of surfacve
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.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 6

OPERATOR INSTRUCTIONAL DATA SHEET

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.

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 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 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.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 7

DANGERDANGER

DANGER

DANGERDANGER

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.

DANGERDANGER

DANGER

DANGERDANGER

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:

SAFETY PRECAUTIONS

2) Develop a comprehensive program for the safe operation
of the SURFACE GRINDER by its owner(s) and/or
operator(s). Such a program will include, but is not
limited to: instructional requirements for operation,
applicable OSHA requirements, local laws and
regulations, job site safety and a SURFACE 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 V­belt 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 area where 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 disc, multi-accessory
attachments and flying particles.

PREPARATION

1) This SURFACE GRINDER is specialized type of
powered equipment, designed for a specific 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 and
the material supplied by the motor 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.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 8

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 GRINDER. Guide against the possibility of
back related injuries. Always lift the SURFACE
GRINDER with leg muscles and not with the back.

6) Prolonged use of the SURFACE GRINDER (or other,
similar machines) exposes the operator to vibrations
which may produce Whitefinger Disease (Raynaud’s
Phenomenon). This phenomenon reduces the hand’s
ability to feel and regulate temperature, produces
numbness and burning sensations and may cause nerve
and circulation damage and tissue necrosis. Anti­vibration systems do not guarantee that you will not
sustain Whitefinger Disease. Therefore, continuous and
regular users should closely monitor the condition of
their hands and fingers. After each period of use,

SAFETY PRECAUTIONS

exercise to restore normal blood circulation. If any of
the symptoms appear, seek medical advice immediately.

7) Clothing must be sturdy and snug fitting, but allow
complete freedom of movement. Never wear loose fitting
jackets, scarves, neckties, jewelry, flared or cuffed
pants or anything that could become caught on controls
or moving parts. Wear long pants to protect your legs.
Protect your hands with heavy duty, non-slip gloves to
improve your grip. Good footing is most important when
operating the SURFACE GRINDER.

Wear sturdy boots with non-slip soles. Steel-toed safety
shoes are highly recommended. Never wear tennis
shoes or other, similar type shoes which afford little or
no protection. Wear an approved safety hard hat to
protect the operator’(s’) head(s) where there is a danger
of head injuries. Noise, generated by the SURFACE
GRINDER and the actual process itself, can damage
your hearing. Wear approved sound barriers (ear plugs
or ear mufflers) to protect your hearing. Continuous and
regular operators should have their hearing checked
regularly.

8) Visually inspect the SURFACE GRINDER, components,
tools and accessories for damaged or worn parts.
BEFORE each use:
a) Disconnect the power source cable.

b) Clean and remove all accumulated foreign matter

from the wheels and determine that each rotates
freely.

c) Clean and remove all accumulated foreign matter

from inside the mainframe area.

d) Inspect the V-belt drive for proper tension, wear and

general condition. Replace each component as
necessary.

e) Inspect the multi-accessory disc and gimbal head

assembly for excessive wear and structural
integrity. Replace each component as necessary.
The multi-accessory disc rotating at high speed
during the specific process can be subject to high
wear rates if the installed attachment is not properly
maintained and/or replaced at regular service
intervals.

f) Determine that operator controls work freely, all

safety devices are operative and information decals
are readable.

g) Check to see that the SURFACE GRINDER and all

related accessories are in good, mechanical
condition BEFORE utilization.

h) Reconnect the power source cable as applicable.

9) Contact appropriate representatives to determine if/
where electrical cables, gas lines and other hazardous
items are buried under the work surface BEFORE
utilization. The SURFACE GRINDER and related
accessories are not insulated. Contact with buried

electrical cables, gas lines and other hazardous items
can result in electrocution and/or an explosion.

10) Know how the controls operate. Know how to stop the
electric motor quickly in an emergency. Always start
the electric motor according to the instructions as
outlined in this manual to minimize the possibility of
unexpected contact with the work surface. Unexpected
contact with the work surface can cause loss of
machine control, and the possibility of property damage
and/or personal injury.

11) Ground the electrically powered SURFACE GRINDER
motor securely. Determine that any “grounding” wire and/
or device is, in fact, properly grounding the motor. Failure
to properly ground the motor may cause an electrical
shock and/or electrocution, resulting in property
damage and personal, injury including death. Electrical
wiring and all connections should be performed by a
qualified electrician. The electric motor is designed to
operate from a 115 AC power source.

12) When operating the SURFACE GRINDERs on a surface
containing water or other electrically conducting liquid,
special precautions must be taken to minimize the
possibility of operator electrocution. Once such
precaution is to wire and operate the electric motor from
a clean, 20 Ampere, 115 Volt AC power source in
conjunction with a ground fault circuit interrupter (GFCI).
A GFCI is a safety device that disconnects power from
a circuit to a load when a potentially dangerous condition
occurs. The GFCI opens the circuit when the fault
current flow from a power line to a ground exceeds the
safe limit for humans.

The GFCI protects against harmful electrical shock to
a person caused by contact with a defective electrical
product. A GFCI differs from a fuse or circuit breaker. A
fuse or circuit breaker opens the circuit when the total
current flow in the power line exceeds the safe limit of
the power line. They are designed to protect against
fire caused by overheating of the power line. Use of a
GFCI gives on the job protection from electrical shock
hazards caused by ground faults in commercial,
industrial and residential applications. They are simple
and easy to use: plug a portable GFCI into any suitable,
grounded extension cord and plug the SURFACE
GRINDER into the GFCI for automatic protection
against ground faults.

For specific information, consult current National
Electrical Code® publications and OSHA publications
210-22D (or current revision) for construction sites and
555-3 (or current revision) for use around any area
containing water.

13) Never exceed the recommended capacities of the
SURFACE GRINDER. Refer to the Specifications
sections of this manual for more detailed information

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 9

SAFETY PRECAUTIONS

OPERATION

1) Give complete and undivided attention to the job at
hand. Do not chew gum, smoke and/or use smokeless
tobacco while utilizing the SURFACE GRINDER. Do
not attempt to eat and/or drink while utilizing the
SURFACE GRINDER. Determine that eyeglasses and/
or hearing aid devices are properly secured.

Use of the SURFACE GRINDER is strenuous and
causes fatigue. Help prevent the cause of an accident.
Plan to take work breaks as required to help maintain
proper mental and physical alertness.

2) This SURFACE GRINDER is not sealed or insulated.
Do not operate the SURFACE GRINDER in an explosive
atmosphere or near combustible materials. Refer to
current OSHA® rules and regulations.

3) The SURFACE GRINDER is designed for use by one
operator. Use of the SURFACE GRINDER by more than
one operator can lead to confusion and loss of control,
resulting in property damage and/or personal injury. If it
is felt that more than one person is required to operate
the SURFACE GRINDER, STOP and contact the
Customer Service Department for specific operational
and service/maintenance information. There is no charge
for this service.

4) Do not operate the SURFACE GRINDER with onlookers
close by. Caution all onlookers to stand clear. 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 and foreign objects clear of the rotating
drum and flails.

and fingers. Always make sure the operator handle is
in good condition and free of moisture, pitch, oil or
grease. Wear gloves to improve your grip. Never leave
the SURFACE GRINDER running unattended.

7) Special care must be exercised on slippery conditions
and on difficult, uneven surfaces. Watch for cracks, high
spots and other, surface irregularities. Keep proper
footing and balance at all times. The normal use of this
machine is on level surfaces. Other terrains can be
dangerous and should be avoided. Only properly trained
operators should attempt these techniques.

8) Never start the electric motor with the SURFACE
GRINDER directly over cracked, uneven or irregular
surfaces.

9) Clean and remove all accumulated foreign matter from
inside the mainframe area after each use. This practice
will maximize bearing and V-belt service life.

10) Because this SURFACE GRINDER is classified as a
low cost, hand held, low horsepower, portable type
machine, it is limited in the number of practical and/or
suitable job applications. A particular job site, actual
surface conditions, job specifications and operator skill/
common sense may dictate that a different type of
machine (with characteristics of higher purchase cost,
being mounted to a carrier vehicle, with greater
horsepower and less mobility), method and/or process
be utilized to properly complete the job with the degree
of efficiency and safety required. Contact the Customer
Service Department for specific information regarding
suitable job applications, job sites surface conditions
and operator experience/skill/common sense
recommendations for this SURFACE GRINDER
BEFORE utilization. There is no charge for this service.

5) Start the electric motor according to the instructions
as outlined in this manual to minimize the possibility of
unexpected contact with the work surface. Unexpected
contact with the work surface can cause the loss of
machine control and the possibility of property damage
and/or personal injury.

6) Start and operate the SURFACE GRINDER only in a
well ventilated area. Operate the SURFACE GRINDER
only when/where visibility and light are adequate for
the job at hand. Work carefully. Always hold the operator
handle firmly with both hands. Wrap your fingers around
the handle, keeping it cradled between your thumbs

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 10

MAINTENANCE, REPAIR AND STORAGE

1) Use only genuine, approved replacement parts and

accessories for maintenance and repair. Use of parts
and accessories manufactured by others can result
in property damage and/or personal injury.

2) Follow the Service instructions as outlined in the

appropriate section of this manual.

3) Always stop the electric motor and disconnect the

power source cable BEFORE checking or working on
the SURFACE GRINDER.

4) Always properly maintain the SURFACE GRINDER.

Frequently check all fasteners and individual parts.
Built in safety features are effective only if they are
maintained in good working condition. Replace any
questionable part or assembly with a genuine, factory
approved, replacement part. Do not forsake proper
maintenance for the price of a few replacement parts.
Proper maintenance does not cost...it actually pays
dividends. Do not attempt any maintenance repair work
not described in this manual. Have such work
performed at your dealer’s service facility.

SAFETY PRECAUTIONS

5) Do not operate the SURFACE GRINDER without the

use of factory approved V-belt and diamond blade
guards that are maintained in proper structural
condition. Frequently inspect the guards for signs of
wear, cracks and other signs of fatigue. If there is
any question regarding the structural integrity and/or
condition of the belt guard, properly dispose and
replace with a genuine, factory approved, replacement
part only.

6) Maintain all safety and operation decals in proper

condition. If any decal becomes damaged and/or
unreadable, replace with a genuine, factory approved,
replacement part only.

7) The SURFACE GRINDER utilizes many self-locking

type hexagon head nuts to minimize the effects of
vibration. Replace all self-locking hardware with
genuine, factory approved, replacement parts only.

8) Consult the material supplied by the electric motor

manufacturer for specific information relative to proper
operational, lubrication and storage requirements.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 11

ASSEMBLY INSTRUCTIONS/OPERATIONS

Assembly

The SFG10E SURFACE GRINDER is shipped from the
factory secured on a specially designed wooden pallet
and protected from external damage by a corrugated carton
or wood crate. If shipped with a corrugated carton, the
SURFACE GRINDER can be secured to the pallet by wood
laths nailed to the pallet body. Remove the carton or crate
immediately upon receipt using suitable tools to remove
the nails.

REMOVING THE SURFACE GRINDER FROM THE
PALLET

Tools Required:

1 set of pliers.
1 claw hammer or a hammer and an appropriate pry bar.

The SURFACE GRINDER is secured to the pallet with
steel banding. Using the pliers, cut and remove the
banding. The SURFACE GRINDER can then be removed
from the pallet.

DANGERDANGER

DANGER

DANGERDANGER

WEAR SAFETY GLASSES AND OTHER APPROPRI­ATE SAFETY APPAREL WHEN CUTTING THE STEEL
BANDING AND/OR REMOVING THE CORRUGATED/
WOOD SHIPPING CRATE.

Visually inspect the shipment for freight damage and/or
missing parts. If shipping damage is evident, contact the
delivering carrier immediately to arrange for an inspection
of the damage by their claims representative. Federal law
requires that a claim be filed within a specific time period. If
missing parts are detected, notify your dealer who will assist
you in obtaining them.

The SURFACE GRINDER is shipped from the factory
completely assembled. If ordered with the SURFACE
GRINDER, multi-accessory attachments are normally
shipped separately to minimize the potential for loss during
shipment.

1) To contain loose materials within the platform area of
the SURFACE GRINDER as a direct result of a specific
grinding process. This includes materials removed from
the surface as well as any slurry mixture utilized to
help maximize material removal efficiencies.

2) To provide a method for a vacuum system to help
remove airborne dust related materials from within the
skirt assembly. Dust related materials are usually
created as a result of the grinding process. A specific
job application may require the reduction and/or
minimization of airborne dust related materials from the
atmosphere while the SURFACE GRINDER is being
operated. The kit includes a hose and necessary
hardware to connect the skirt assembly to the 3 inch
diameter vacuum attachment fitting located at the rear
of the machine. Use of the kit along with a suitable
vacuum system will not completely remove all airborne
and loose materials directly from the work surface.

DANGERDANGER

DANGER

DANGERDANGER

THE USE OF THE SFSG121000 SAFETY AND DUST
SHIELD ASSEMBLY KIT ALONG WITH A SUITABLE
VACUUM SYSTEM TO REMOVE HAZARDOUS
CLASSIFIED, AIRBORNE MATERIALS FROM THE
WORK SURFACE WILL NOT ELIMINATE THE
REQUIREMENT FOR PROPER SAFETY RELATED
EQUIPMENT, OPERATING PLAN AND/OR
PROCEDURES.

DANGERDANGER

DANGER

DANGERDANGER

USE OF THE SFSG121000 SAFETY AND DUST SHIELD
ASSEMBLY KIT ALONG WITH A SUITABLE VACUUM
SYSTEM WILL NOT COMPLETELY REMOVE ALL
LOOSE MATERIALS FROM THE WORK SURFACE.
HAZARDOUS CLASSIFIED, LOOSE MATERIALS MUST
BE REMOVED FROM THE WORK SURFACE BY PRO­CESSES AND/OR PROCEDURES MEETING THE
APPLICABLE OSHA AND/OR EPA REQUIREMENTS.

Check all fasteners for proper security. Consult a fastener
torque chart for the proper torque value if any fastener is
found to require retorquing.

After April 1, 1996 all single head SURFACE GRINDERS
are shipped from the factory with the SFSG121000 Safety
and Dust Shield Assembly Kit. The SFSG121000 Safety
and Dust Shield is designed to perform the following job
functions:

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 12

ASSEMBLY INSTRUCTIONS/OPERATIONS

Operation

THEORY OF OPERATION

The SFG10E SURFACE GRINDERS operate on the principle
of various multi-accessory attachments being utilized at
rotational speeds to make direct contact with a work
surface. Various types of multi-accessory attachments are
secured to a recess provided in the rotating, aluminum disc
located on the bottom of the machine. The specific type of
multi-accessory attachment utilized during the grinding
process directly affects the type of material removed, the
material removal rate and the resulting flatness and
smoothness of the surface.

The grinding process is directly controlled by these
conditions:

1) The use of a suitable mechanism (multi-accessory
attachment) of proper design and configuration to grind
the work surface and remove material while delivering
acceptable service life.

2) Sufficient static weight supporting the multi- accessory
attachment to allow it to effectively penetrate the work
surface and remove material.

3) Adequate horsepower capable of propelling the multi­accessory attachment against the work surface to
deliver acceptable productivity rates.

Since no two materials are exactly alike, no two work surface
materials can be penetrated and removed by the exact same
method. The nature of the grinding process, along with
operator experience, skill and common sense, would
suggest that efficient and productive material removal is a
matter of trial and error. Combinations of multi-accessory
attachment type, condition, and feed rate are direct factors
that will also determine the overall success of the job
application.

MULTI-ACCESSORY ATTACHMENTS AND APPLICATIONS

While individual multi-accessory attachment design and
configuration may vary, basic operational characteristics
are identical: impact upon a work surface material and
remove a percentage of the material. This common
operational characteristic has led to the development of
the following popular multi-accessory attachments:

Grinding Stones

Grinding stones are available in a number of grades,
including: C06 extra coarse, C10 coarse, C24 medium, C80
fine and C120 super fine grade. FIGURE 4. All stones
incorporate silicon carbide as the abrasive medium and
employ a clay binder as the matrix material. Vitrified type
stones utilize an oven baking process that produces greater
service life over other manufacturing processes. As the
clay material wears away, it exposes new, sharp, edges of

the imbedded silicon carbide material. All stones have the
identical 2" x 2" X 4" dimensions and are secured to the
machine by the use of a plastic wedge.

FIGURE 4

The designation system for the grinding stones utilizes a
system similarly utilized for most abrasive products: the
larger the number, the finer the grain structure and usually,
the smoother resulting finish.

a) The C06 and C10 coarse grade stones are the most
popular utilized stones and result in maximum material
removal rates. They are utilized for general grinding and the
removal of trowel marks, high spots and rough sections on
concrete surfaces. The average service life is approximately
4 to 10 hours.

b) The C24 medium grade stone will result in lower material
removal rates. It is utilized for finer finish grinding of concrete
and rough grinding on terrazzo and other types of stone
floor configurations. The average service life is approximately
6 to 10 hours.

c) The C80 fine grade stone will result in still lower material
removal rates. It is utilized for polishing concrete and
medium grinding on terrazzo and other types of stone floor
configurations with a water/slurry mixture only. The average
service life is approximately 8 to 20 hours.

d) The C120 super fine grade stone will result in the lowest
material removal rates. It is utilized for final polishing on
terrazzo and other types of stone floor configurations with
a water/slurry mixture only. The average service life is
approximately 40 to 75 hours.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 13

ASSEMBLY INSTRUCTIONS/OPERATIONS

Tungsten Carbide Grinding Block

This multi-accessory attachment is most often utilized on
larger concrete grinding projects where increased production
and service life are required. The block utilizes tungsten
carbide balls approximately 1/16 inch diameter that are
deposited in a molten matrix material during the
manufacturing process at a controlled rate. The end effect
is a multi layer deposit of tungsten carbide balls in the matrix
material. As the softer matrix material wears with use, it
exposes a new layer of fresh tungsten carbide balls to
continue the grinding process. The tungsten carbide grinding
block is considerably more aggressive than the C10 silicon
carbide grinding stone. With the ability to renew itself during
usage, the normal life expectancy for this accessory can
approach several hundred hours. The nominal dimensions for
the tungsten carbide grinding block is 2" x 2" x 4" and is secured
to the machine with a plastic wedge. FIGURE 5.

insert flails. In turn, these costs must be compared to
anticipated service life. All flails will eventually wear to the
point of requiring replacement. The amount of unproductive
time spent to replace worn flails on a job can be substantially
greater than the actual replacement cost of many flails. It
then becomes a balance between purchase cost,
productivity, service life and labor cost.

c) Surface finish and texture. The finest grained surface
finish available from the scarifying process is comparable
to a “swept or broomed” like finish. If a smooth, flat finish is
desired, the scarifying process must be followed with a
grinding or polishing type process. Many job requirements
may call for large amounts of material to be removed, but
followed with additional specifications requiring a finer
surface finish or texture. Many times these jobs dictate the
use of an aggressive flail configuration because of
productivity and cost considerations. Less aggressive flail
configurations can then be utilized for the final finishing
sequence. Generally speaking, the more aggressive the flail
configurations, the more coarse the resulting finish and
texture.

Many flail configurations are available to meet a wide variety
of job applications and surface material specifications. To
give additional perspective to each configuration, a rating
system of 1 to 10 (10 being highest) has been devised.

FIGURE 5

Scarifier Blocks

These multi-accessory attachments are comprised of flails
and spacer washers secured in a rigid steel case. FIGURE

6. Rotation of the multi-accessory disc causes the flails to
impact against the work surface with a variety of results.
Scarifier blocks are secured to the machine with plastic
wedges.

Several factors directly affect the selection of a flail design
for a specific job application:

a) The type and amount of material to be removed from the
work surface. Materials of higher yield and tensile strengths
along with the actual volume of material to be removed will
generally be the first factors under consideration.

b) Purchase cost versus service life. The original purchase
cost of plain, heat-treated steel flails must be compared
against the substantially higher costs of the tungsten carbide

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 14

FIGURE 6

Star Flail

The star flail is manufactured from high carbon steel that is
through hardened for additional service life. It is highly
effective for light cleaning or scarifying and delivers a finer
surface finish texture. FIGURE 7.

FIGURE 7

Suggested Applications:

1) Removal of thin coatings and encrusted accumulations.

2) Cleaning concrete and asphaltic surfaces

3) Removing thick material build-ups of greases, paints,
oils, vegetable powders and some resins from floors.

4) Light scarifying prior to the application of coatings,
toppings or sealers.

COST 1
PRODUCTIVITY 3
SERVICE LIFE 1
The star flail should be replaced when the outside diameter
is worn to approximately 1-5/16 inch or the inside diameter
elongates to approximately 3/4 inch.

Beam Flail

The beam type flail is manufactured from high carbon steel
that is through hardened for additional service life. It is highly
effective for scabbling or scarifying and delivers medium to
coarse surface finish texture. FIGURE 8.

FIGURE 8

Suggested Applications:

1) Medium duty asphalt and concrete scarifying.

2) Descaling steel decks.

3) Removing thick material build-ups of greases, paints,
oils, vegetable powders and some resins from floors.

4) Dried, fully cured, carpet and tile adhesive removal.

ASSEMBLY INSTRUCTIONS/OPERATIONS

COST 1
PRODUCTIVITY 5
SERVICE LIFE 2
The beam flail should be replaced when the outside diameter
is worn to approximately 1-5/16 inch or the inside diameter
elongates to approximately 3/4 inch.

Pentagonal Flail

The pentagonal type flail is manufactured from high carbon
steel that is through hardened for additional service life.
Each section of the five sided design features a small,
tungsten carbide insert that is held in position with copper
brazing. It is highly effective for scabbling or scarifying and
delivers medium to coarse finish texture. FIGURE 9.

FIGURE 9

Suggested Applications:

1) Heavy duty asphalt and concrete scarifying.

2) Heavy duty descaling of steel decks.

The pentagonal flail is designed for more aggressive and
rapid removal of a surface in comparison to the beam flail.
The addition of the tungsten carbide inserts contributes to
its long service life and higher production rates. The use of
tungsten carbide is also the main reason for the cost
differential between it and the other flails. The design
configuration yields a rather coarse surface finish and
texture. For many job applications, this finish and texture
will be satisfactory. Some applications may require an
additional smoothing process. If the resulting surface finish
is too coarse to meet specifications, it can be smoothed
with the use of the star or beam flail.

COST 10
PRODUCTIVITY 8
SERVICE LIFE 10
The pentagonal flail should be replaced when two successive
tungsten carbide inserts break off or the inside diameter
elongates to approximately 3/4 inch. In service, the flail
body will wear much faster than the tungsten carbide inserts.
The copper brazing used to weld the inserts into the body
can fail and an insert break off. The flail can still be used in
service. It will just wear a little faster and more uneven in

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 15

ASSEMBLY INSTRUCTIONS/OPERATIONS

that particular area. As a general rule, a pentagonal flail
can be utilized until body wear will no longer support the
tungsten carbide inserts.

Spacer Washer

Spacer washers are stamped from high carbon steel and
heat-treated for additional service life. FIGURE 10.
Spacer washers serve the following functions:

FIGURE 10

1) Reduces the number of flails required to be mounted
on the scarifier block, thus reducing purchase and
operational costs.

2) Arrange the flails in a sequence or pattern that minimize
“blind” or “open” spots. Normally, at least one spacer
washer is inserted between two consecutive flails. A
scarifier block set up with only star, beam or pentagonal
flails will not penetrate the work surface at satisfactory
rates. This configuration will minimize the hammering
or impact action of the flails.

Variances in material thickness and manufacturing
processes can affect the final thickness of both flails and
spacer washers. Because of this occurrence, trial and error
is important for assembling flails and spacer washer on the
scarifier block. By mixing and matching flails and spacer
washers of specific thicknesses, the required number of
components can be assembled on a block in a minimum
amount of time.

DANGERDANGER

DANGER

DANGERDANGER

USE ONLY FACTORY SUPPLIED SPACER WASHERS
ON THE SCARIFIER BLOCK. OTHER WASHER TYPES
AND/OR CONFIGURATIONS CAN PRODUCE ABNOR­MAL WEAR AND ELONGATION, RESULTING IN
COMPLETE SEPARATION FROM THE SCARIFIER
BLOCK. INADVERTENT SPACER WASHER SEPARA­TION CAN LEAD TO PROPERTY DAMAGE AND/OR
PERSONAL INJURY.

Scarifier Block Bushing

Scarifier block bushings are designed to be discarded
whenever the flails are replaced. FIGURE 11. Normal wear
should be uniform about the bushing circumference.
Uneven bushing wear would suggest the following problems:

FIGURE 1 1

1) Inadequate free play exists between the flails/spacer
washers and the scarifier block case. If the flails and
spacer washers do not have complete freedom of
movement, they will not be capable of properly rotating
about the scarifier block bushing. The result is bushing
wear usually confined to two locations that are 180
degrees apart. Variances in flail and spacer washer
thicknesses affect free play when assembled on the
scarifier block.

Because free play is also created during the scarifying
process due to actual flail and spacer washer wear, a
certain amount of “tightness” can sometimes be
tolerated without affecting the service life of the
bushings and flails. The specific amount of “tightness”
can usually be determined through trial and error. If the
flails and spacer washers appear too tight on the
scarifier block, remove an appropriate flail or washer
and reassemble the block. If a short, operational test
indicates normal component wear patterns, the apparent
problem has been solved. A general rule for
consideration: it is better to have the flails and spacer
washers a “little too loose than a little too tight”.

2) Mixing both worn and new flails on the scarifier block.
Proper flail action against the work surface material
requires that the flails be of the same approximate
dimensions. Flails with various inside and outside
dimensions will not impact the work surface material
with the same intensity and deliver the same results.
Flail bushing wear is directly proportional to the amount
of force it must supply against each individual flail. When
a bushing can no longer supply adequate force against
the flails, it will break, allowing the flails to be hurdled

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 16

ASSEMBLY INSTRUCTIONS/OPERATIONS

against the inside of the SURFACE GRINDER frame.
The more aggressive flails require greater forces to keep
them contained on the block. These forces, in turn,
create faster and/or uneven bushing wear rates.

Because scarifier bushings are a critical component of
the actual scarifying process, it is important that each
bushing be inspected on a regular basis to determine
proper structural integrity.

Wire brushes

Typical applications include light scarifying and cleaning of
concrete, asphalt, steel and tile surfaces. Wire brushes are
secured to the machine with plastic wedges. FIGURE 12.

Floor Brushes

Eleven inch diameter, silicon carbide impregnated, floor
brushes are available in a number of styles and designs for
general maintenance and cleaning projects. FIGURE 14.
They are especially effective cleaning soiled concrete floors
with the addition of water soluble solvents. These types of
brushes are directly mounted to the multi-accessory disc
with the included 1/2 inch x 2 inch long Grade 5 capscrews.
A kidney shaped drive plate is provided on the back side of
the brush. This drive plate fits into a recess provided in the
multi-accessory disc. FIGURE 15.

FIGURE 14

FIGURE 12

Wire brushes are available in a number of flat wire sizes and
resulting configurations. With continuous use, the flat wire will
take a “set” that can limit effectiveness and overall productivity.
FIGURE 13. For best results, flat wire brushes should be rotated
end for end in the aluminum multi-accessory disc a minimum
of once for every one hour of operation. External weight applied
to the SURFACE GRINDER will not normally increase
productivity rates and only accelerate flat wire wear rates.

FIGURE 13

FIGURE 15

SCRAPE-R-TACH® Industrial Floor Coatings Removal
System

This multi-accessory attachment is designed to remove
many urethanes, epoxies, paints, mastics and other, similar
material accumulations from concrete floor surfaces.
FIGURE 16. Each assembly utilizes two tungsten carbide
inserts set at a precise angle. The rotating inserts “cut and
shave” against the work surface material with a “scraping”
action that removes materials with highly productive results.
To increase the effectiveness of the inserts, the scraper
block design incorporates a Lord® type rubber mount that
helps absorb damaging shocks while allowing the inserts
to more easily follow local variations in the surface contour.
Units are secured to the machine with plastic wedges.

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 17

FIGURE 16

The productivity of the product is directly dependent upon the
yield and tensile strength of the material being removed.
Material thickness has also shown to have a direct effect on
overall productivity. For example, the SCRAPE-R-TACH
system is a highly productive method for removing thick paint
accumulations from factory floors. Production rates of up to
several hundred square feet per hour can be realized. However,
many thin film ( ie: 5 mill thickness and thinner) urethane
coatings present a much more difficult removal problem. Since
removal rates are also directly affected by applied down force,
up to 300 lbs of external weight can be applied to the SURFACE
GRINDER to increase productivity. Cement blocks, stacked
bags of cement or weighted drums make excellent weights
and can be secured with “bungy” cords. FIGURE 17.

ASSEMBLY INSTRUCTIONS/OPERATIONS

shear from the concrete floor material. The occurrence is
also aggravated by higher ambient temperatures. This
problem can be significantly reduced with the addition of
various amounts of water or a water saturated, fine sand
combination placed on the floor. The use of the Safety and
Dust Shield Assembly with the SURFACE GRINDER is
highly recommended to contain the water/sand slurry mixture
from damaging surrounding walls and other vertical surfaces.

FIGURE 18

To index the tungsten carbide insert, proceed as follows:

Tools required:
1 each, 5/32 Allen wrench.

1) Clean the SCRAPE-R-TACH unit with a suitable safety
solvent to remove excess material build-up. Remove
as much foreign material from the female hexagon
socket area of the capscrew. This will allow the wrench
to make full contact and maximize the torque transfer
to the cap screw.

FIGURE 17

Each insert provides 8 scraping edges. As an edge become
dull and worn, the insert can be turned and reinstalled to
expose a new, sharp edge. FIGURE 18. When all 4 edges
of one side become worn and dull, the insert can be turned
over to expose an additional 4 edges.
Many materials such as adhesives, rubber deposits and
mastics have the tendency to extrude or smear rather than

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 18

CAUTION

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

Follow all safety precautions for the safety solvent.

2) Remove the cap screw from the unit. Clean the newly
exposed areas of the insert and SCRAPE-R-TACH unit
with the safety solvent. Clean and inspect the threaded
holes found in older units for excess wear. New style
SCRAPE-R-TACH units feature a through hole design.

3) Index the insert to expose a new edge. Reinstall the
capscrew and apply a torque value that properly seats
the insert firmly against the body of the unit.

ASSEMBLY INSTRUCTIONS/OPERATIONS

CAUTION

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

An insufficient seating torque value will allow the
insert to become loose from the unit body, resulting
in premature component wear and improper
scraping action. An excessive torque value will strip
the threads of the capscrew or unit body.

4) Determine that the unit body is free to rotate about the
5/16 inch diameter capscrew that retains the body to
the unit. A body that does not freely rotate indicates
that a material build-up exists between the rubber mount
and retaining capscrew exits. This build-up must be
removed by disassembling the body from the unit and
cleaning all contact areas with the safety solvent.
FIGURE 20.

The SCRAPE-R-TACH system is designed to be installed
with the edge of the tungsten carbide inserts facing the
direction of rotation. Markings are provided to indicate proper
direction of rotation.

Multi-Segmented, Dry Diamond Disc

Many times increased concrete removal rates can be
achieved with the use of multi-segmented, dry diamond
discs. FIGURE 21. These discs are designed to operate
dry or can also be utilized with water. If the wet option is
chosen, an external source for providing water must be
devised. No provision for water use is provided with the
SURFACE GRINDER. Typical discs are approximately 10
inch diameter and feature up to 20 diamond segments that
are welded or brazed to each assembly.

To install the multi-segmented, dry diamond disc, the
standard, aluminum, multi-accessory disc is first removed
from the SURFACE GRINDER. The diamond disc fastens
directly to the gimbal head with 3/8 inch diameter x 1 inch
long Allen head capscrews. FIGURE 22. The rear wheel
assembly is then placed in the lowest position to
compensate for the thickness variance of the diamond discs.
FIGURE 23.

FIGURE 20

CAUTION

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

Installing the SCRAPE-R-TACH system with the
tungsten carbide inserts facing opposite the
rotation direction will not deliver satisfactory
material removal rates and result in premature
component wear requiring early replacement.

FIGURE 21

FIGURE 22

SFG10E ELECTRIC SURFACE GRINDER — OPERATION AND PARTS MANUAL — REV. #2 (05/28/09) — PAGE 19