Grizzly G9928 User guide

MODEL G9928

FLEX SHAFT GRINDER

INSTRUCTION MANUAL

(For models manufactured since 01/ 05)

COPYRIGHT © MARCH, 2002 BY GRIZZLY INDUSTRIAL, INC., REVISED OCTOBER, 2016 (DN)

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

PRINTED IN CHINA

V2 .10.16

This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.

Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and compre­hension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:

• Lead from lead-based paints.

• Crystalline silica from bricks, cement and other masonry products.

• Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equip­ment, such as those dust masks that are specially designed to filter
out microscopic particles.

SECTION 1: SAFETY

Always wear ANSI-

when operating or observing machinery to

For Your Own Safety Read Instruction Manual

Before Operating This Power Tool

The purpose of safety symbols is to attract your attention to possible hazard-

ous conditions. This manual uses a series of symbols and signal words which
are intended to convey the level of importance of the safety messages. The
progression of symbols is described below. Remember that safety messages by
themselves do not eliminate danger and are not a substitute for proper accident
prevention measures.

Indicates an imminent 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 potentially hazardous situation which, if
not avoided, MAY result in minor or moderate injury.
It may also be used to alert against unsafe practices.

NOTICE

This symbol is used to alert the user to useful infor­mation about proper operation of the equipment.

Safety Instructions for Power Tools

OWNER’S MANUAL. Read and under-

stand this owner’s manual BEFORE using
machine.

TRAINED OPERATORS ONLY. Untrained
operators have a higher risk of being hurt
or killed. Only allow trained/supervised
people to use this power tool. When tool
is not being used, disconnect power, and
store in out-of-reach location to prevent
unauthorized use—especially around
children. Make workshop kid proof!

DANGEROUS ENVIRONMENTS. Do not
use tools in areas that are wet, cluttered,
or have poor lighting. Operating tools in
these areas greatly increases risk of acci­dents and injury.

G9928 Flex Shaft Grinder Mfd. Since 01/05

MENTAL ALERTNESS REQUIRED. Full
mental alertness is required for safe oper­ation of power tools. Never operate under
the influence of drugs or alcohol, when
tired, or when distracted.

DISCONNECT POWER FIRST. Always
disconnect tool from power supply
BEFORE making adjustments, chang­ing tooling, or servicing machine. This
prevents an injury risk from unintended
startup or contact with live electrical com­ponents.

EYE PROTECTION.

approved safety glasses or a face shield

reduce the risk of eye injury or blindness
from flying particles. Everyday eyeglasses
are not approved safety glasses.

-1-

ELECTRICAL SAFETY. Tool plug must

in good work-

If at

match outlet. Double-insulated tools have
a polarized plug (one blade is wider than
the other), which must be plugged into a
polarized outlet. Never modify plug. Do
not use adapter for grounded tools. Use
a ground fault circuit interrupter if opera­tion is unavoidable in damp locations.
Avoid touching grounded surfaces when
operating tool.

WEARING PROPER APPAREL. Do not
wear clothing, apparel or jewelry that
can become entangled in moving parts.
Always tie back or cover long hair. Wear
non-slip footwear to avoid accidental
slips, which could cause loss of workpiece
control. Wear hard hat as needed.

HAZARDOUS DUST. Dust created while
using tools may cause cancer, birth
defects, or long-term respiratory damage.
Be aware of dust hazards associated with
each workpiece material, always wear
a NIOSH-approved respirator, and con­nect tool to an appropriate dust collection
device to reduce your risk.

HEARING PROTECTION. Always wear
hearing protection when operating or
observing loud machinery. Extended
exposure to this noise without hearing
protection can cause permanent hearing
loss.

REMOVE ADJUSTING TOOLS. Never
leave adjustment tools, chuck keys,
wrenches, etc. in or on tool—especially
near moving parts. Verify removal before
starting!

INTENDED USAGE. Only use tool for its
intended purpose. Never modify or alter
tool for a purpose not intended by the
manufacturer or serious injury or death
may result!

AWKWARD POSITIONS. Keep proper
footing and balance at all times when
operating tool. Do not overreach! Avoid
awkward hand positions that make tool
control difficult or increase the risk of
accidental injury.

SAFE HANDLING. Firmly grip tool. To
avoid accidental firing, do not keep finger
on switch or trigger while carrying.

FORCING TOOLS. Use right tool for job,
and do not force it. It will do job safer and
better at rate for which it was designed.

-2-

SECURING WORKPIECE. When
required, use clamps or vises to secure
workpiece. This protects hands and frees
both of them to operate tool.

GUARDS & COVERS. Guards and cov­ers reduce accidental contact with mov­ing parts or flying debris. Ensure they
are properly installed, undamaged, and
working correctly.

CHILDREN & BYSTANDERS. Keep chil­dren and bystanders at a safe distance
from the work area. Stop using tool if they
become a distraction.

USE RECOMMENDED ACCESSORIES.
Consult this manual or manufacturer
for recommended accessories. Using
improper accessories will increase risk of
serious injury.

MAINTAIN WITH CARE. Keep cutting
tool edges sharp and clean. Follow all
maintenance instructions and lubrication
schedules to keep tool
ing condition. A tool that is improperly
maintained could malfunction, leading to
serious personal injur y or death. Only
have tool serviced by qualified service­personnel using matching replacement
parts.

CHECK DAMAGED PARTS. Regularly
inspect tool for any condition that may
affect safe operation. Immediately repair
or replace damaged or mis-adjusted parts
before operating tool.

MAINTAIN POWER CORDS. When dis­connecting cord-connected tools from
power, grab and pull the plug—NOT the
cord. Carrying or pulling the cord may
damage wires inside. Do not handle cord/
plug with wet hands. Avoid cord damage
by keeping it away from heated surfaces,
high traffic areas, harsh chemicals, sharp
edges, moving parts, and wet/damp loca­tions. Damaged cords increase risk of
electrocution.

UNATTENDED OPERATION. Never
leave tool running while unattended. Turn
tool OFF and ensure all moving parts
completely stop before walking away.

EXPERIENCING DIFFICULTIES.

any time you experience difficulties per­forming the intended operation, stop
using the machine! Contact our Technical
Support at [phone].

SECTION 2: INTRODUCTION

Manual Accuracy Contact Info

We are proud to offer this document with
your new machine! We've made every
effort to be exact with the instructions,
specifications, drawings, and photographs
of the machine we used when writing
this manual. However, sometimes we still
make an occasional mistake.

Also, owing to our policy of continuous
improvement, your machine may not
exactly match the manual. If you find this
to be the case, and the difference between
the manual and machine leaves you in
doubt, immediately call our technical sup­port for updates or clarification.

For your convenience, we post all avail­able documentation on our website at
www.grizzly.com. Any updates to this doc­ument will be reflected on our website as
soon as complete.

We stand behind our machines! If you have
questions or need help, contact us with the
information below. Before contacting, make
sure you get the serial number and manu­facture date from the machine ID label. This
will help us help you faster.

Grizzly Technical Support

1815 W. Battlefield
Springfield, MO 65807
Phone: [phone]

Email: [e-mail]

We want your feedback on this manual.
What did you like about it? Where could it
be improved? Please take a few minutes to
give us feedback.

Grizzly Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Email: [e-mail]

G9928 Flex Shaft Grinder Mfd. Since 01/05

-3-

SECTION 3: OPERATION

Operating this tool can propel objects
into the air, causing immediate eye
damage. To protect yourself, always
wear American National Standards
Institute (ANSI) approved safety
glasses or goggles when operating
this equipment.

OPERATION

1. Before using the Flexible Shaft Grinder,

determine a location in the work area
to mount the Holder and the Hanger.
Drive (2) wood screws through (2)
Electrical Rings and through the
Hanger to the mounting location
selected. Attach the Hanger to the
Motor Housing with (2) screws.

2. The Flex Shaft and Flex Shaft Housing
need to be lubricated with a light lithi­um lubricant or machine oil. Use only
small amount. Too much lubricant can
become messy and possibly get on
your workpiece. Do not use automo-

tive grease, as it is too viscous.

3. A set screw holds the Flex Shaft to the

Motor Shaft. When the Flex Shaft is
secure to the Motor Shaft, thread the
end of the Flex Shaft Housing onto the
base of the Motor Housing. Be sure
that the Flexible Shaft assembly is not
bent more than 90 degrees or kinked.

4. The Grinder Head fits onto the end of
the Flex Shaft. It is secure when you
hear a snap. To remove the Grinder
Head from the Flex Shaft, firmly grasp
the Grinder Head and Flex Shaft with
two hands and pull apart.

5. Loosen the Drill Chuck with the Chuck

-4-

Under normal working conditions
and use, it is normal for the motor
housing to become hot. However, the
hot surface may cause personal inju­ry if touched or present a possible
danger of an extreme fire hazard if
near flammable material. If the
Flexible Shaft Grinder is used for a
prolonged period of time and
the motor housing becomes
EXTREMELY HOT, stop using the
machine and let it cool down.

Key. Insert the desired bit and tighten
the Drill Chuck with the Chuck Key.

6. Attach the Foot Control as follows.
Insert the Plug into the Female Plug.
Insert the Power Plug into the electri­cal outlet. The depth of the Foot
Control can be set by using the set­screw on the Foot Control, this will
allow the operator to adjust for desired
maximum speed. Tightening and low­ering the screw will allow for greater
speeds. Loosening and raising the
screw will limit the speed allowed by
the Foot Control.

7. Make sure all safety instructions have
been followed before turning the
machine ON.

8. Select the desired speed by using the
Foot Control.

SECTION 4: MAINTENANCE

P9928008 CARBON BRUSH (NOT SHOWN)

LUBRICATING FLEX SHAFT

The Flex Shaft and Flex Shaft Housing
should be lubricated after every 8 hours of
use. A small amount of light lithium lubri­cant or machine oil applied to the length of
the Flex Shaft is all that is needed. Too
much lubricant can become messy and
possibly get on your workpiece. Do not

use automotive grease as it is too
viscous.

Disconnect power to the machine
when performing any maintenance,
assembly or adjustments. Failure to
do this may result in serious personal
injury.

CARBON BRUSH REPLACEMENT

Normal Carbon Brush life is 500–2000
hours, depending on use. Always replace
both brushes when it is time for
replacement.

1. Use a small screwdriver to remove the
Carbon Brushes from the sides of the
Motor Housing. Be careful when
removing the brushes, as the brushes
are spring-loaded and may spring out.
If the brush does not spring out, gently
remove it using the tip of the screw­driver. Examine the brush surface for
scratches or breakage. If the brush is

broken, replace immediately with a

replacement brush from Grizzly
Industrial, Inc.

2. If the brush is not broken and is dirty,
remove the dirt using a pencil eraser.
Gently rub with the eraser until all of
the dirt has been removed. Remove all
eraser dust so it will not interfere with
the machine.

REPLACEMENT ACCESSORIES

Should you need to order replacement
parts for your Model G9928, please refer
to the following parts diagram and list.

(1, 2, 3)

4

5

6V2

REF PART # DESCRIPTION

1

P99280022 CHUCK HOUSING

2

P9928023 BEARING 608Z

3

P9928024 CHUCK

4

P9928001 HANGER

5

P9928025 CHUCK KEY

6V2

P9928027V2 FOOT CONTROL V2.01.05

7

P9928021 FLEX SHAFT

8

7

3. Re-install the brushes and gently
tighten with the screwdriver.

G9928 Flex Shaft Grinder Mfd. Since 01/05

-5-

WARRANTY CARD

Name _________________________________________________________________

Street _________________________________________________________________

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Phone # ____________________ Email ________________________ Invoice

#__________________________ Model # ______________________ Order # ______

The following information is given on a voluntary basis. It will be used for marketing purposes to
help us develop better products and services. All information is strictly confidential.

1. How did you learn about us?
____Advertisement ____Friend ____Catalog
____Card Deck ____Website Other:________________________

2. Which of the following magazines do you subscribe to?

____ Cabinet Maker
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____ Handy
____ Home Shop Machinist
____ Journal of Light Cont.
____ Live Steam
____ Model Airplane News
____ Modeltec
____ Old House Journal

3. What is your annual household income?
____$20,000-$29,000 ____$30,000-$39,000 ____$40,000-$49,000
____$50,000-$59,000 ____$60,000-$69,000 ____$70,000+

____ Popular Mechanics
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____ Projects in Metal
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____ Shop Notes
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____ Today’s Homeowner
____ Wood
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____ Woodshop News
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____ Woodwork
____ Woodworker West
____ Woodworker’s Journal
____ Other:

4. What is your age group?
____20-29 ____30-39 ____40-49
____50-59 ____60-69 ____70+

5. How long have you been a woodworker/metalworker?
____0-2 Years ____2-8 Years ____8-20 Years ____20+ Years

6. How many of your machines or tools are Grizzly?
____0-2 ____3-5 ____6-9 ____10+

7. Do you think your machine represents a good value? ____Yes ____No

8. Would you recommend Grizzly Industrial to a friend? ____Yes ____No

9. Would you allow us to use your name as a reference for our customers in your area?

Note: We never use names more than 3 times. ____Yes ____No

10. Comments: _________________________________________________________

______________________________________________________________________
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______________________________________________________________________
______________________________________________________________________

Send a Grizzly Catalog to a friend:

Name________________________________

Street________________________________

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FOLD ALONG DOTTED LINE

GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069

TAPE ALONG EDGES--PLEASE DO NOT NAIL

Place

Stamp

Here

WARRANTY

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original
purchaser from the date of purchase. This warranty does not apply to defects due directly
or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of
maintenance. This is Grizzly’s sole written warranty and any and all warranties that may
be implied by law, including any merchantability or fitness, for any particular purpose, are
hereby limited to the duration of this written warranty. We do not warrant or represent that
the merchandise complies with the provisions of any law or acts unless the manufacturer
so warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase
price paid for the product and any legal actions brought against Grizzly shall be tried in the
State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental,
contingent, special, or consequential damages arising from the use of our products.

To take advantage of this warranty, contact us by mail or phone and give us all the details.
We will then issue you a “Return Number,’’ which must be clearly posted on the outside
as well as the inside of the carton. We will not accept any item back without this number.
Proof of purchase must accompany the merchandise.

The manufacturers reserve the right to change specifications at any time because they
constantly strive to achieve better quality equipment. We make every effort to ensure that
our products meet high quality and durability standards and we hope you never need to
use this warranty.

Please feel free to write or call us if you have any questions about the machine or the
manual.

Thank you again for your business and continued support. We hope to serve you again
soon.

Grizzly Tech Support

1815 W. Battlefield
Springfield, MO 65807
Phone: [phone]

E-Mail:

[e-mail]

Web Site: http://www.grizzly.com