Grizzly G8689Z User manual

COPYRIGHT © AUGUST, 2023 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#CS22812 PRINTED IN CHINA V1.08.23
MODEL G8689Z
4" X 16" MINI MILLING
MACHINE
OWNER'S MANUAL
(For models manufactured since 07/23)
***Keep for Future Reference***

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 compre-
hension, 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 equip-
ment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents
INTRODUCTION............................................... 2
Contact Info.................................................... 2
Manual Accuracy ........................................... 2
Identification ................................................... 3
Controls & Components ................................. 4
Machine Data Sheet ...................................... 6
SECTION 1: SAFETY....................................... 8
Safety Instructions for Machinery .................. 8
Additional Safety for Mill/Drills ..................... 10
SECTION 2: POWER SUPPLY ...................... 11
SECTION 3: SETUP ....................................... 13
Needed for Setup ......................................... 13
Unpacking .................................................... 13
Inventory ...................................................... 14
Cleanup ........................................................ 15
Site Considerations ...................................... 15
Lifting & Placing ........................................... 16
Leveling ........................................................ 17
Bench Mounting ........................................... 17
Test Run ...................................................... 18
Spindle Break-In .......................................... 19
SECTION 4: OPERATIONS ........................... 20
Operation Overview ..................................... 20
Positioning Table ......................................... 21
Joining Drill Chuck & Arbor .......................... 22
Removing/Installing Tooling ......................... 22
Tilting Column .............................................. 24
Using Spindle Downfeed ............................. 25
Adjusting Depth Stop ................................... 26
Setting Spindle Speed ................................. 27
SECTION 5: ACCESSORIES ......................... 28
SECTION 6: MAINTENANCE......................... 30
Schedule ...................................................... 30
Cleaning & Protecting .................................. 30
Lubrication ................................................... 30
SECTION 7: SERVICE ................................... 33
Troubleshooting ........................................... 33
Adjusting Gibs .............................................. 35
Adjusting X-Axis Leadscrew Backlash......... 36
Replacing Fuse ............................................ 36
Replacing Motor Brushes ............................ 36
Tramming Spindle ........................................ 37
SECTION 8: WIRING...................................... 39
Wiring Safety Instructions ............................ 39
Wiring Diagram ............................................ 40
Electrical Component Photos ...................... 41
SECTION 9: PARTS....................................... 42
Table ............................................................ 42
Headstock .................................................... 44
Column ......................................................... 46
Labels & Cosmetics ..................................... 48
WARRANTY & RETURNS ............................. 49

-2- Model G8689Z (Mfd. Since 07/23)
We stand behind our machines! If you have ques-
tions 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: [email protected]
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: [email protected]
Contact Info
We are proud to provide a high-quality owner’s
manual with your new machine!
We
made every effort to be exact with the
instruc-
tions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that
sometimes the machine
you receive is
slightly different than shown in the manual
.
If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something
,
check our
website for an updated version. W
e post
current
manuals and
manual updates for free
on our web-
site at
www.grizzly.com.
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write
down the
manufacture date and
serial number
from the machine ID label (see below). This
information is required for us to provide proper
tech support, and it helps us determine if updated
documentation is available for your machine.
Manufacture Date
Serial Number
Manual Accuracy
INTRODUCTION
No list of safety guidelines can be com-
plete. Every shop environment is different.
Always consider safety first, as it applies
to your individual working conditions. Use
this and other machinery with caution and
respect. Failure to do so could result in
serious personal injury, damage to equip-
ment, or poor work results.
Like all machinery there is potential danger
when operating this machine. Accidents
are frequently caused by lack of familiarity
or failure to pay attention. Use this machine
with respect and caution to decrease the
risk of operator injury. If normal safety pre-
cautions are overlooked or ignored, seri-
ous personal injury may occur.

Model G8689Z (Mfd. Since 07/23) -3-
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
Identification
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
Electrical Box
Chip Guard
Column
Table
Headstock
Motor
Micro Downfeed
Knob
Rapid Downfeed
Lever
(1 of 3)
Way Cover
(1 of 2)
Y-Axis
Handwheel
X-Axis
Handwheel
X-Axis
Lock Handle
Depth
Stop Power Indicator
Z-Axis
Lock Handle
Emergency
Stop
Button
Speed
Range
Lever
Y-Axis
Lock Handle
Spindle Power
Reset Indicator
Control
Panel
Drawbar
Cover
Chuck

-4- Model G8689Z (Mfd. Since 07/23)
Controls &
Components
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
A. Spindle Power Reset Indicator: Illuminates
when power is ON but spindle speed dial
needs to be reset in order to start spindle
rotation. To reset spindle power, rotate spin-
dle speed dial all the way counterclockwise.
B. Power Indicator: Illuminates when power is
connected to machine and Emergency Stop
button cover is open.
C. Spindle Speed Dial: Rotates clockwise to
increase spindle RPM; rotates counterclock-
wise to decrease spindle RPM. Spindle speed
ranges from 0–1100 RPM in low speed mode
and 0–2500 RPM in high speed mode.
Power
Figure 1. Power controls and components.
Refer to the following figures and descriptions to
become familiar with the basic controls and com-
ponents of this machine. Understanding these
items and how they work will help you understand
the rest of the manual and minimize your risk of
injury when operating this machine.
A
B
C
D
E
F
Note: Spindle speed dial must be rotated all
the way counterclockwise to reset spindle
power after Emergency Stop button has been
used or ON/OFF toggle switch has been
moved to OFF position.
D. ON/OFF Toggle Switch: Turns machine
power ON and OFF.
E. Fuse Socket: Houses 5A fuse.
F. Emergency Stop Button w/Cover: Turns
incoming power OFF and cover clicks into
place to prevent accidental startup.
Spindle
Figure 2. Right spindle components.
G. Micro Downfeed Knob: Moves headstock
up and down for precise Z-axis control when
milling.
H. Rapid Downfeed Lever (1 of 3): Quickly
moves headstock up and down for drilling
operations.
I. Z-Axis Lock Handle: Secures headstock
position on column.
J. Depth Stop Lock Handle: Secures depth
stop position on column.
K. Depth Stop: Limits depth of headstock and
spindle travel for repeated operations.
G
H
I
J
K

Model G8689Z (Mfd. Since 07/23) -5-
N
Figure 3. Left spindle components.
L. Speed Range Lever: Selects low or high
spindle speed range.
M. Downfeed Graduated Collar: Displays spin-
dle movement in 0.001" increments. One full
revolution of micro downfeed knob repre-
sents 0.060" of spindle travel.
N. Spindle: Accepts collets, arbors, and other
tool holders with an R8 taper.
O. Column Tilt Scale: Indicates column tilt in
relation to table.
P. Z-Axis Scale: Indicates spindle and head-
stock depth.
L
O
P
Table
Figure 4. Table components.
Q. X-Axis Scale: Indicates longitudinal table
travel.
R. Table Graduated Collar (1 of 2): Displays
table movement in 0.001" increments. One
full revolution of either table handwheel rep-
resents 0.0625" of table travel.
S. X-Axis Handwheel: Moves table along
X-axis (left and right).
T. Y-Axis Lock Handle: Tightens to prevent
Y-axis table movement for increased rigidity
during operations when Y-axis should not
move.
U. Y-Axis Handwheel: Moves table along
Y-axis (front and back).
V. X-Axis Lock Handle: Tightens to prevent
X-axis table movement for increased rigidity
during operations when X-axis should not
move.
Q
S
T
U
R
V
M

-6- Model G8689Z (Mfd. Since 07/23)
The information contained herein is deemed accurate as of 8/9/2023 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 1 OF 2
Model G8689Z
MACHINE DATA
SHEET
Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]
MODEL G8689Z 4" X 16" MINI MILLING MACHINE
Product Dimensions:
Weight.............................................................................................................................................................. 101 lbs.
Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 20 x 20 x 30 in.
Footprint (Length x Width)................................................................................................................. 12-1/2 x 8-1/2 in.
Space Required for Full Range of Movement (Width x Depth).............................................................. 29-1/2 x 20 in.
Shipping Dimensions:
Type.......................................................................................................................................................... Wood Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 135 lbs.
Length x Width x Height....................................................................................................................... 20 x 21 x 28 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz
Full-Load Current Rating....................................................................................................................................... 4.5A
Minimum Circuit Size.............................................................................................................................................. 15A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 90 in.
Power Cord Gauge......................................................................................................................................... 18 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type.................................................................................. ON/OFF Toggle Switch w/Emergency Stop Button
Motors:
Main
Horsepower............................................................................................................................................. 1/2 HP
Phase............................................................................................................................................ Single-Phase
Amps........................................................................................................................................................... 4.5A
Speed................................................................................................................................................ 6000 RPM
Type.................................................................................................................................................... DC Brush
Power Transfer .......................................................................................................................................... Gear
Bearings..................................................................................................... Shielded & Permanently Lubricated
Main Specifications:
Operation Info
Max Distance Spindle to Column.......................................................................................................... 6-3/8 in.
Max Distance Spindle to Table............................................................................................................ 10-1/2 in.
Longitudinal Table Travel (X-Axis)........................................................................................................ 9-1/8 in.
Cross Table Travel (Y-Axis)......................................................................................................................... 4 in.
Vertical Head Travel (Z-Axis)................................................................................................................ 9-1/2 in.
Head Tilt (Left/Right).............................................................................................................................. 45 deg.
Drilling Capacity for Cast Iron................................................................................................................... 1/2 in.
Drilling Capacity for Steel......................................................................................................................... 1/2 in.
End Milling Capacity................................................................................................................................. 1/2 in.
Face Milling Capacity................................................................................................................................... 1 in.
Machine Data Sheet

Model G8689Z (Mfd. Since 07/23) -7-
The information contained herein is deemed accurate as of 8/9/2023 and represents our most recent product specifications.
Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 2 OF 2
Model G8689Z
Table Info
Table Length........................................................................................................................................ 15-3/4 in.
Table Width........................................................................................................................................... 3-5/8 in.
Table Thickness.................................................................................................................................... 1-1/4 in.
Table Height (from Floor/Base)............................................................................................................. 5-1/4 in.
Table Weight Capacity............................................................................................................................. 46 lbs.
Number of T-Slots............................................................................................................................................ 3
T-Slot Size................................................................................................................................................ 1/2 in.
T-Slots Centers...................................................................................................................................... 1-1/8 in.
X/Y-Axis Travel per Handwheel Revolution........................................................................................ 0.0625 in.
Spindle Info
Spindle Taper................................................................................................................................................. R8
Number of Vertical Spindle Speeds...................................................................................................... Variable
Range of Vertical Spindle Speeds................................................................................ 0 - 1100, 0 - 2500 RPM
Quill Diameter....................................................................................................................................... 1.580 in.
Drawbar Thread Size............................................................................................................................ 7/16"-20
Drawbar Length................................................................................................................................... 4-5/16 in.
Spindle Bearings........................................................................................................................... Ball Bearings
Construction
Spindle Housing/Quill........................................................................................................................... Cast Iron
Table....................................................................................................................................... Ground Cast Iron
Head.................................................................................................................................................... Cast Iron
Column/Base....................................................................................................................................... Cast Iron
Base..................................................................................................................................................... Cast Iron
Paint Type/Finish.................................................................................................................................... Enamel
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ........................................................................................................ 30 Minutes
Serial Number Location .................................................................................................................................. ID Label
Sound Rating ..................................................................................................................................................... 85 dB
ISO 9001 Factory .................................................................................................................................................. Yes
Features:
Two Variable-Speed Spindle Ranges: 0 - 1100 and 0 - 2500 RPM
Adjustable Depth Stop
Clear Chip Guard on Spindle
Rubber Chip Guards on Ways
12-1/2" Swing
R8 Spindle
Three 1/2" T-Slots
9-1/2" Vertical Head Travel w/Rapid and Micro Downfeed
1/2" Drilling Capacity in Steel and Cast Iron
Zero-Setting Dials on Handwheels w/0.001" Graduations
Dovetail Headstock Column and Table Ways
Accessories Included:
Drill Chuck 1/32" - 1/2" JT33
Arbor R8 x JT33
Two T-Slot Nuts 3/8"-16
Hex Wrenches 3, 4, 5, 6mm
Open-End Wrenches 8 x 10, 14 x 17, 17 x 19, 36mm
Spanner Wrench 45 - 52mm
Oil Bottle

-8- Model G8689Z (Mfd. Since 07/23)
ELECTRICAL EQUIPMENT INJURY RISKS.
You can be shocked, burned, or killed by touching
live electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.
DISCONNECT POWER FIRST.
Always discon-
nect machine from power supply BEFORE mak-
ing adjustments, changing tooling, or servicing
machine. This prevents an injury risk from unin-
tended startup or contact with live electrical com-
ponents.
EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating or
observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.
OWNER’S MANUAL. Read and understand this
owner’s manual BEFORE using machine.
TRAINED OPERATORS ONLY. Untrained oper-
ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis-
connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make your workshop kid proof!
DANGEROUS ENVIRONMENTS. Do not use
machinery in areas that are wet, cluttered, or have
poor lighting. Operating machinery in these areas
greatly increases the risk of accidents and injury.
MENTAL ALERTNESS REQUIRED. Full mental
alertness is required for safe operation of machin-
ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
For Your Own Safety, Read Instruction
Manual Before Operating This Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of impor-
tance 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. Always use common sense and good judgment.
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.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Alerts the user to useful information about proper operation of the
machine to avoid machine damage.
NOTICE
Safety Instructions for Machinery
SECTION 1: SAFETY

Model G8689Z (Mfd. Since 07/23) -9-
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 reduce
risk of slipping and losing control or accidentally
contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece mate-
rial. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hear-
ing protection when operating or observing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.
REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!
USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifica-
tions—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!
AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.
CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.
FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.
NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.
STABLE MACHINE. Unexpected movement dur-
ing operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.
USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for rec-
ommended accessories. Using improper acces-
sories will increase the risk of serious injury.
UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.
MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
MAINTAIN POWER CORDS. When disconnect-
ing cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the 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, and wet/damp locations.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intend-
ed operation, stop using the machine! Contact our
Technical Support at [phone].

-10- Model G8689Z (Mfd. Since 07/23)
Additional Safety for Mill/Drills
UNDERSTAND ALL CONTROLS. Make sure
you understand the function and proper use of all
controls before starting. This will help you avoid
making mistakes that result in serious injury.
AVOIDING ENTANGLEMENT. DO NOT wear
loose clothing, gloves, or jewelry, and tie back
long hair. Keep all guards in place and secure.
Always allow spindle to stop on its own. DO NOT
stop spindle using your hand or any other object.
WEAR FACE SHIELD. Always wear a face shield
in addition to safety glasses. This provides more
complete protection for your face than safety
glasses alone.
USE CORRECT SPINDLE SPEED. Follow rec-
ommended speeds and feeds for each size and
type of cutting tool. This helps avoid tool breakage
during operation and ensures best cutting results.
INSPECT CUTTING TOOL. Inspect cutting tools
for sharpness, chips, or cracks before each use.
Replace dull, chipped, or cracked cutting tools
immediately.
PROPERLY SECURE CUTTER. Firmly secure
cutting tool or drill bit so it does not fly out of spin-
dle during operation.
POWER DISRUPTION. In the event of a local
power outage during operation, turn spindle
switch OFF to avoid a possible sudden startup
once power is restored.
You can be seriously injured or killed by getting clothing, jewelry, or long hair entangled with
rotating cutter/spindle. You can be severely cut or have fingers amputated from contact with
rotating cutters. You can be blinded or struck by broken cutting tools, metal chips, workpieces,
or adjustment tools thrown from the rotating spindle with great force. To reduce your risk of
serious injury when operating this machine, completely heed and understand the following:
CLEAN MACHINE SAFELY. Metal chips or shav-
ings can be razor sharp. DO NOT clear chips
by hand or compressed air that can force chips
farther into machine—use a brush or vacuum
instead. Never clear chips while spindle is turning.
SECURE WORKPIECE TO TABLE. Clamp work-
piece to table or secure in a vise mounted to table,
so workpiece cannot unexpectedly shift or spin
during operation. NEVER hold workpiece by hand
during operation.
PROPERLY MAINTAIN MACHINE. Keep
machine in proper working condition to help
ensure that it functions safely and all guards and
other components work as intended. Perform rou-
tine inspections and all necessary maintenance.
Never operate machine with damaged or worn
parts that can break or result in unexpected move-
ment during operation.
DISCONNECT POWER FIRST. To reduce risk of
electrocution or injury from unexpected startup,
make sure mill/drill is turned OFF, disconnected
from power, and all moving parts have come to
a complete stop before changing cutting tools or
starting any inspection, adjustment, or mainte-
nance procedure.
REMOVE CHUCK KEY & SPINDLE TOOLS.
Always remove chuck key, drawbar wrench, and
other tools used on the spindle immediately after
use. This will prevent them from being thrown by
the spindle upon startup.

Model G8689Z (Mfd. Since 07/23) -11-
SECTION 2: POWER SUPPLY
Availability
Before installing the machine, consider the avail-
ability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.
Electrocution, fire, shock,
or equipment damage
may occur if machine is
not properly grounded
and connected to power
supply.
Full-Load Current Rating
The full-load current rating is the amperage a
machine draws at 100% of the rated output power.
On machines with multiple motors, this is the
amperage drawn by the largest motor or sum of all
motors and electrical devices that might operate
at one time during normal operations.
Full-Load Current Rating at 110V..... 4.5 Amps
The full-load current is not the maximum amount
of amps that the machine will draw. If the machine
is overloaded, it will draw additional amps beyond
the full-load rating.
If the machine is overloaded for a sufficient length
of time, damage, overheating, or fire may result—
especially if connected to an undersized circuit.
To reduce the risk of these hazards, avoid over-
loading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.
For your own safety and protection of
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Note: Circuit requirements in this manual apply to
a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, con-
sult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.
A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power sup-
ply circuit used for this machine must be sized to
safely handle the full-load current drawn from the
machine for an extended period of time. (If this
machine is connected to a circuit protected by
fuses, use a time delay fuse marked D.)
110V Circuit Requirements
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
Serious injury could occur if you connect
machine to power before completing setup
process. DO NOT connect to power until
instructed later in this manual.
Nominal Voltage .................... 110V, 115V, 120V
Cycle ..........................................................60 Hz
Phase ........................................... Single-Phase
Power Supply Circuit ......................... 15 Amps
Plug/Receptacle ............................. NEMA 5-15

-12- Model G8689Z (Mfd. Since 07/23)
Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is nec-
essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service per-
sonnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, discon-
nect it from power, and immediately replace it with
a new one.
Extension Cords
We do not recommend using an extension cord
with this machine.
If you must use an extension
cord, only use it if absolutely necessary and only
on a temporary basis.
Extension cords cause voltage drop, which can
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).
Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:
Minimum Gauge Size ...........................16 AWG
Maximum Length (Shorter is Better).......50 ft.
Grounding & Plug Requirements
Figure 5. Typical 5-15 plug and receptacle.
Grounding Pin
Neutral Hot
5-15 PLUG
GROUNDED
5-15 RECEPTACLE
SHOCK HAZARD!
Two-prong outlets do not meet the grounding
requirements for this machine. Do not modify
or use an adapter on the plug provided—if
it will not fit the outlet, have a qualified
electrician install the proper outlet with a
verified ground.
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!

Model G8689Z (Mfd. Since 07/23) -13-
SECTION 3: SETUP
This machine presents
serious injury hazards
to untrained users. Read
through this entire manu-
al to become familiar with
the controls and opera-
tions before starting the
machine!
Wear safety glasses during
the entire setup process!
HEAVY LIFT!
Straining or crushing injury
may occur from improperly
lifting machine or some of
its parts. To reduce this risk,
get help from other people
and use a forklift (or other
lifting equipment) rated for
weight of this machine.
Description Qty
• Safety Glasses (for each person) ..........1 Pr.
• Cleaner/Degreaser ..................... As Needed
• Disposable Rags ........................ As Needed
• Disposable Gloves ..................... As Needed
• Lifting Sling (Rated for at least 175 lbs.) ..... 1
• Lifting Equipment
(Rated for at least 175 lbs.) ........................ 1
• Another Person .......................................... 1
• Flat Head Screwdriver 1⁄4" ........................... 1
• Mounting Hardware .................... As Needed
Needed for Setup
The following items are needed, but not included,
for the setup/assembly of this machine.
This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.
If items are damaged
,
please
call us immediately at [phone].
IMPORTANT:
Save all packaging materials until
you are completely satisfied with the machine and
have resolved any issues between Grizzly or the
shipping agent. You MUST have the original pack-
aging to file a freight claim. It is also extremely
helpful if you need to return your machine later.
Unpacking

-14- Model G8689Z (Mfd. Since 07/23)
Figure 6. Loose inventory.
A
BC
D
E
FG
H
IJ
NOTICE
If you cannot find an item on this list, care-
fully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpack-
ing or they are pre-installed at the factory.
Loose Inventory (Figure 6) Qty
A. Handwheel Handles ................................... 2
B. Spindle Locking Pin .................................... 1
C. Drill Chuck Key ........................................... 1
D. Spanner Wrench 45–52mm ....................... 1
E. Open-End Wrenches 8 x 10, 14 x 17,
17 x 19mm ............................................1 Ea.
F. Open-End Wrench 36mm .......................... 1
G. T-Slot Nuts 3⁄8"-16 ....................................... 2
H. Oil Bottle ..................................................... 1
I. Spare Fuse 5A ........................................... 1
J. Hex Wrenches 3, 4, 5, 6mm .................1 Ea.
Inventory
The following is a list of items shipped with your
machine. Before beginning setup, lay these items
out and inventory them.
If any non-proprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.

Model G8689Z (Mfd. Since 07/23) -15-
Figure 7. Minimum working clearances.
29½"
20"
20"
Cleanup
The unpainted surfaces of your machine are
coated with a heavy-duty rust preventative that
prevents corrosion during shipment and storage.
This rust preventative works extremely well, but it
will take a little time to clean.
Be patient and do a thorough job cleaning your
machine. The time you spend doing this now will
give you a better appreciation for the proper care
of your machine's unpainted surfaces.
There are many ways to remove this rust preven-
tative, but the following steps work well in a wide
variety of situations. Always follow the manufac-
turer’s instructions with any cleaning product you
use and make sure you work in a well-ventilated
area to minimize exposure to toxic fumes.
Before cleaning, gather the following:
• Disposable rags
• Cleaner/degreaser (WD•40 works well)
• Safety glasses & disposable gloves
• Plastic paint scraper (optional)
Basic steps for removing rust preventative:
1.
Put on safety glasses.
2. Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
3.
Wipe off the surfaces. If your cleaner/degreas-
er is effective, the rust preventative will wipe
off easily. If you have a plastic paint scraper,
scrape off as much as you can first, then wipe
off the rest with the rag.
4.
Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
NOTICE
Avoid harsh solvents like acetone or brake
parts cleaner that may damage painted sur-
faces. Always test on a small, inconspicu-
ous location first.
Children and visitors may be
seriously injured if unsuper-
vised around this machine.
Lock entrances to the shop
or disable start switch or
power connection to prevent
unsupervised use.
Site Considerations
Workbench Load
Refer to the Machine Data Sheet for the weight
and footprint specifications of your machine.
Some workbenches may require additional rein-
forcement to support the weight of the machine
and workpiece materials.
Consider anticipated workpiece sizes and addi-
tional space needed for auxiliary stands, work
tables, or other machinery when establishing a
location for this machine in the shop. Below is
the minimum amount of space needed for the
machine.
Placement Location

-16 - Model G8689Z (Mfd. Since 07/23)
5. Lift and place machine in desired location.
Note: For lifting equipment, route lifting sling
under headstock, being careful not to put
pressure on controls, as shown in Figure 11,
then connect sling ends to equipment.
Figure 11. Example of lifting sling position.
Lifting & Placing
To lift and place machine:
1. Move shipping crate next to workbench or
stand, then unbolt machine from pallet.
2. Thread (2) handwheel handles into X-axis
and Y-axis handwheels (see Figure 8).
HEAVY LIFT!
Straining or crushing injury
may occur from improperly
lifting machine or some of
its parts. To reduce this risk,
get help from other people
and use a forklift (or other
lifting equipment) rated for
weight of this machine.
Figure 8. Handwheel handles installed.
Y-Axis
Handwheel
X-Axis
Handwheel
Handwheel
Handle
(1 of 2)
3. Loosen Y-axis lock handle, use Y-axis
handwheel to move work table as close to
column as possible, then tighten Y-axis lock
handle to secure (see Figure 9).
Figure 9. Components for preparing table for
lifting.
Y-Axis
Lock Handle
Column
Table
4. Loosen Z-axis lock handle, use rapid
downfeed levers to move headstock to its
highest position, then tighten Z-axis lock
handle to secure (see Figure 10).
Figure 10. Headstock adjustment components.
Z-Axis
Lock Handle
Rapid
Downfeed
Lever
(1 of 3)
Headstock
Use lifting equipment rated for at least 175 lbs.,
or have an additional person help you lift the
machine off of the pallet and onto a workbench or
stand, then secure the machine in place.
Lifting
Sling
Headstock
Controls

Model G8689Z (Mfd. Since 07/23) -17-
Bench Mounting
Figure 14. "Direct Mount" setup.
Machine Base
Workbench
Lag Screw
Flat Washer
Another option is a "direct mount" (see example
below) where the machine is secured directly to
the workbench with lag screws and washers.
The base of this machine has mounting holes
that allow it to be fastened to a workbench or
other mounting surface to prevent it from moving
during operation and causing accidental injury or
damage.
The strongest mounting option is a "Through
Mount" (see example below) where holes are
drilled all the way through the workbench—and
hex bolts, washers, and hex nuts are used to
secure the machine in place.
Machine Base
Workbench
Hex
Bolt
Flat Washer
Flat Washer
Lock Washer
Hex Nut
Figure 13. "Through Mount" setup.
Number of Mounting Holes ............................ 4
Diameter of Mounting Hardware Needed . 5⁄16"
Leveling
Leveling machinery helps precision components,
such as tables and bedways, remain straight
and flat during the lifespan of the machine.
Components on a machine that are not level may
slowly twist due to the dynamic loads placed on
the machine during operation.
IMPORTANT: Use only hand tools to secure
machine to bench. Do not tighten with impact
tools, which can permanently twist and bend com-
ponents and pull a level machine out of alignment.
If needed, use metal shims between the machine
base and workbench when leveling the machine.
For best results, use a precision level that is at
least 12" long and sensitive enough to show a
distinct movement when a 0.003" shim (approxi-
mately the thickness of one sheet of standard
newspaper) is placed under one end of the level.
See the figure below for an example of a high
precision level offered by Grizzly.
Figure 12. H2683 Master Machinist's Level.

-18- Model G8689Z (Mfd. Since 07/23)
5. Connect machine to power by inserting power
cord plug into matching receptacle. Power
indicator will illuminate (see Figure 15).
Figure 16. Pressing Emergency Stop button
cover closed.
Figure 15. Location of power controls, and
Emergency Stop button cover open.
Spindle
Speed Dial
Toggle
ON/OFF
Switch
Emergency Stop
Button Cover
Power Indicator
6. Move ON/OFF toggle switch to ON position.
7. Rotate spindle speed dial clockwise just
enough to start spindle rotation. Verify motor
starts up and runs smoothly without any
unusual problems or noises.
8. Press Emergency Stop button cover closed
to turn machine OFF (see Figure 16).
Test Run
Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning correctly.
If you find an unusual problem during the test run,
immediately stop the machine, disconnect it from
power, and fix the problem BEFORE operating the
machine again. The
Troubleshooting
table in the
SERVICE section of this manual can help.
DO NOT start machine until all preceding
setup instructions have been performed.
Operating an improperly set up machine
may result in malfunction or unexpect-
ed results that can lead to serious injury,
death, or machine/property damage.
Serious injury or death can result from
using this machine BEFORE understanding
its controls and related safety information.
DO NOT operate, or allow others to operate,
machine until the information is understood.
The test run consists of verifying the following: 1)
The motor powers up and runs correctly, and 2)
Emergency Stop button works correctly.
To test run machine:
1. Clear all setup tools away from machine.
2. If cover on Emergency Stop button is closed,
move red button on Emergency Stop but-
ton cover up until cover springs open (see
Figure 15).
3. Move ON/OFF toggle switch to OFF position
(see Figure 15).
4. Rotate spindle speed dial all the way counter-
clockwise (see Figure 15). This resets power
so machine can start.
9. Rotate spindle speed dial all the way counter-
clockwise. Without opening Emergency Stop
button, try to start spindle rotation by rotating
spindle speed dial clockwise. Spindle should
not rotate.