Grizzly G9743 User manual

COPYRIGHT © MARCH, 2006 BY GRIZZLY INDUSTRIAL, INC., REVISED JUNE, 2023 (CS)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#PCBL7711 PRINTED IN TAIWAN V3.06.23
MODEL G9743
7" X 12" GEARHEAD
METAL-CUTTING BANDSAW
OWNER'S MANUAL
(For models manufactured since 10/23)
***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 Horizontal Metal
Bandsaws .................................................... 10
SECTION 2: POWER SUPPLY ...................... 11
Converting Voltage to 220V ......................... 13
SECTION 3: SETUP ....................................... 15
Needed for Setup ......................................... 15
Unpacking .................................................... 15
Inventory ...................................................... 16
Hardware Recognition Chart ....................... 17
Cleanup ........................................................ 18
Site Considerations ...................................... 19
Assembly ..................................................... 20
Power Connection........................................ 22
Test Run ...................................................... 22
Recommended Adjustments ........................ 24
SECTION 4: OPERATIONS ........................... 25
Operation Overview ..................................... 25
Operation Tips ............................................. 26
Workpiece Inspection................................... 26
Using Vise .................................................... 27
Adjusting Work Stop .................................... 28
Selecting Blades .......................................... 28
Changing Blade ........................................... 30
Tensioning Blade ......................................... 32
Blade Breakage ........................................... 32
Blade Care & Break-In ................................. 33
Changing Blade Speed ................................ 33
Blade Speed Chart ...................................... 34
Chip Inspection Chart .................................. 35
Setting Blade Feed Rate.............................. 36
Adjusting Blade Guide Positions.................. 37
Cutting Fluid ................................................. 37
Cutting Fluid System .................................... 38
SECTION 5: ACCESSORIES......................... 39
SECTION 6: MAINTENANCE......................... 41
Schedule ...................................................... 41
Cleaning & Protecting .................................. 41
Lubrication ................................................... 41
Cutting Fluid System .................................... 44
SECTION 7: SERVICE ................................... 45
Troubleshooting ........................................... 45
Adjusting Blade Tracking ............................. 48
Squaring Blade to Table .............................. 50
Adjusting Blade Guides & Bearings ............ 51
Adjusting Blade Brush ................................. 52
Adjusting Downfeed Stop Bolt ..................... 52
SECTION 8: WIRING...................................... 54
Wiring Safety Instructions ............................ 54
Wiring Diagram (110V) ................................ 55
Wiring Diagram (220V) ................................ 56
Electrical Component Photos ...................... 57
SECTION 9: PARTS....................................... 59
Base/Stand .................................................. 59
Headstock .................................................... 61
Miscellaneous Assemblies ........................... 63
Gearbox ....................................................... 64
Electrical Box ............................................... 66
Labels & Cosmetics (Front) ......................... 67
Labels & Cosmetics (Rear) .......................... 68
WARRANTY & RETURNS ............................. 69

-2- Model G9743 (Mfd. Since 10/23)
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

Model G9743 (Mfd. Since 10/23) -3-
Identification
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
For Your Own Safety Read Instruction Manual Before Operating Saw
a) Wear eye protection and respirator.
b) Do not remove jammed cutoff pieces until blade has stopped.
c) Maintain proper adjustment of blade tension, blade guides, and support bearings.
d) Adjust upper guide to just clear workpiece.
e) Properly support and secure workpiece with table, vise, or some type of support fixture.
Never hold workpiece with hands during cut.
Blade
Work Stop
Motor
Wheel
(1 of 2)
Blade Tension
Handle
Guide Post
Adjustment Knob
Control
Panel
Speed Control
Knob
Feed Rate
Dial
Bandsaw
Stand
Positive Lock
Handle
Blade Guides
Vise
Blade
Tracking
Controls
Downfeed
Limit Switch
Vise
Handwheel
Pump
ON/OFF
Switch
Feed On/Off
Valve
Cutting Fluid
Control Valve

-4- Model G9743 (Mfd. Since 10/23)
Controls &
Components
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
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.
Headstock
Figure 1. Headstock controls and components.
A. Blade Tension Handle: Increases or
decreases blade tension.
B. Blade Tracking Controls: Adjust upper
blade wheel tilt to move blade toward or away
from wheel shoulder.
C. Cutting Fluid Control Valve: Adjusts cutting
fluid flow rate.
D. Blade Guides: Support blade. Adjust upper
blade guide as close to workpiece as pos-
sible to prevent blade from twisting.
E. Guide Post Adjustment Knob: Adjusts
upper blade guide that supports blade.
D
E
A
B
Vise
Figure 3. Vise controls and components.
J
I
H
G
G. Vise Handwheel: Adjusts movable vise jaw.
H. Positive Lock Handle: Opens vise jaws
enough to advance workpiece past blade
during repetitive cutting operations. Tightly
clamps jaws once movable vise jaw has been
adjusted to contact workpiece.
I. Movable Vise Jaw: Holds workpiece against
rear vise jaw during cutting operation.
J. Rear Vise Jaw: Adjusts workpiece angle
relative to blade.
K. Work Stop: Supports repetitive cutting
operations.
K
Figure 2. Location of speed control knob.
F. Speed Control Knob: Adjusts blade speed
to 148, 216, or 282 FPM.
F
C

Model G9743 (Mfd. Since 10/23) -5-
Power Controls
Figure 6. Control panel components.
P. ON Button: Starts saw blade.
Q. Emergency Stop Button: Stops all machine
functions. Twist clockwise to reset.
R. Pump ON/OFF Switch: Turns coolant pump
ON when moved up and OFF when moved
down.
Downfeed
Figure 4. Feed controls.
P
L
M
L. Feed Rate Dial: Adjusts feed rate between
levels 1–9. Increases feed rate when turned
counterclockwise and decreases feed rate
when turned clockwise.
M. Feed On/Off Valve: Opens to lower head-
stock until it contacts downfeed stop bolt;
closes to stop headstock from lowering.
N. Downfeed Stop Bolt: Stops headstock from
lowering farther than completion of cut.
O. Downfeed Limit Switch: Turns machine
OFF when headstock is fully lowered and
switch is engaged.
Figure 5. Other downfeed components.
N
O
Figure 7. Location of circuit breaker reset button.
S
S. Circuit Breaker Reset Button: Allows motor
to be restarted after thermal overload protec-
tion has tripped. To reset, turn motor OFF,
wait a few minutes for motor to cool, then
press reset button. If button does not stay
depressed, allow motor to cool longer, then
try again.
Q
R

-6- Model G9743 (Mfd. Since 10/23)
The information contained herein is deemed accurate as of 6/9/2023 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 3
Model G9743
MACHINE DATA
SHEET
Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]
MODEL G9743 7" X 12" 1‐1/2 HP GEARHEAD METAL‐
CUTTING BANDSAW
Product Dimensions:
Weight.............................................................................................................................................................. 391 lbs.
Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 56 x 17-1/2 x 59 in.
Footprint (Length x Width)..................................................................................................................... 40 x 16-1/2 in.
Shipping Dimensions:
Type................................................................................................................................................... Wood Slat Crate
Content........................................................................................................................................................... Machine
Weight.............................................................................................................................................................. 467 lbs.
Length x Width x Height....................................................................................................................... 58 x 23 x 54 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement............................................................................................. 110V or 220V, Single-Phase, 60 Hz
Prewired Voltage.................................................................................................................................................. 110V
Full-Load Current Rating............................................................................................... 23.6A at 110V, 11.8A at 220V
Minimum Circuit Size.......................................................................................................... 30A at 110V, 15A at 220V
Connection Type................................................................................................................................ Cord Connected
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 70 in.
Power Cord Gauge......................................................................................................................................... 12 AWG
Plug Included........................................................................................................................................................... No
Recommended Plug Type............................................................................................. L5-30 for 110V, 6-15 for 220V
Switch Type....................................................................................................... ON Button w/Automatic Shut-Off Tab
Motors:
Main
Horsepower............................................................................................................................................. 1.5 HP
Phase............................................................................................................................................ Single-Phase
Amps.................................................................................................................................................. 23A/11.5A
Speed................................................................................................................................................ 1720 RPM
Type................................................................................................................. TEFC Capacitor-Start Induction
Power Transfer ................................................................................................................................. Gear Drive
Bearings..................................................................................................... Shielded & Permanently Lubricated
Centrifugal Switch/Contacts Type......................................................................................................... External
Coolant Pump
Horsepower................................................................................................................................................. 53W
Phase............................................................................................................................................ Single-Phase
Amps................................................................................................................................................... 0.6A/0.3A
Speed................................................................................................................................................ 3440 RPM
Type......................................................................................................................................... Sealed Induction
Power Transfer ............................................................................................................................... Direct Drive
Bearings........................................................................................................ Sealed & Permanently Lubricated
Machine Data Sheet
MODEL G9743
7" X 12" GEARHEAD METAL-CUTTING BANDSAW

Model G9743 (Mfd. Since 10/23) -7-
The information contained herein is deemed accurate as of 6/9/2023 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 3
Model G9743
Main Specifications:
Operation Info
Blade Speeds....................................................................................................................... 148, 216, 282 FPM
Std. Blade Length.............................................................................................................................. 104-1/2 in.
Std. Blade Width.......................................................................................................................................... 1 in.
Cutting Capacities
Angle Cuts....................................................................................................................................... 45 - 90 deg.
Vise Jaw Depth...................................................................................................................................... 9-3/4 in.
Vise Jaw Height........................................................................................................................................... 5 in.
Max. Capacity Rectangular Height at 90 Deg.............................................................................................. 7 in.
Max. Capacity Rectangular Width at 90 Deg............................................................................................. 12 in.
Max. Capacity Round at 90 Deg.................................................................................................................. 9 in.
Max. Capacity Rectangular Height at 30 Deg.............................................................................................. 8 in.
Max. Capacity Rectangular Width at 30 Deg............................................................................................. 10 in.
Max. Capacity Round at 30 Deg................................................................................................................ 10 in.
Max. Capacity Rectangular Height at 45 Deg.............................................................................................. 4 in.
Max. Capacity Rectangular Width at 45 Deg............................................................................................... 8 in.
Max. Capacity Round at 45 Deg.................................................................................................................. 6 in.
Construction
Table....................................................................................................................... Precision Ground Cast Iron
Upper Wheel....................................................................................................................... Machined Cast Iron
Lower Wheel....................................................................................................................... Machined Cast Iron
Body..................................................................................................................................................... Cast Iron
Base.......................................................................................... Formed and Welded Steel with Coolant Sump
Wheel Cover............................................................................................................................ Pre-formed Steel
Paint Type/Finish...................................................................................................................................... Epoxy
Other
Wheel Size.......................................................................................................................................... 12-1/2 in.
Blade Guides Upper............................................................................................................. Adjustable Carbide
Blade Guides Lower............................................................................................................. Adjustable Carbide
Coolant Capacity................................................................................................................................ 2-1/2 GAL
Table Info
Table Size Length...................................................................................................................................... 18 in.
Table Size Width................................................................................................................................... 7-3/4 in.
Floor To Cutting Area Height............................................................................................................... 21-5/8 in.
Other Specifications:
Country of Origin .............................................................................................................................................. Taiwan
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ........................................................................................................ 45 Minutes
Serial Number Location .................................................................................................................................. ID Label
Sound Rating ..................................................................................................................................................... 80 dB
ISO 9001 Factory .................................................................................................................................................. Yes

-8- Model G9743 (Mfd. Since 10/23)
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