MODEL G0939/G0940
13" 2 HP BENCHTOP PLANER
OWNER'S MANUAL
(For models manufactured since 12/22)
COPYRIGHT © DECEMBER, 2020 BY GRIZZLY INDUSTRIAL, INC., REVISED DECEMBER, 2022 (MN)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#MN21529 PRINTED IN CHINA
***Keep for Future Reference***
V2.12.22
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.
Table of Contents
INTRODUCTION ............................................... 2
Contact Info.................................................... 2
Machine Differences
Manual Accuracy
Identification
Controls & Components
Internal Components...................................... 5
Machine Data Sheet (G0939)
Machine Data Sheet (G0940)
SECTION 1: SAFETY
Safety Instructions for Machinery
Additional Safety for Planers
SECTION 2: POWER SUPPLY
SECTION 3: SETUP
Unpacking
Needed for Setup
Inventory
Hardware Recognition Chart
Site Considerations
Bench Mounting
Assembly
Dust Collection
Test Run
SECTION 4: OPERATIONS
Operation Overview
Workpiece Inspection................................... 21
Wood Types
Planing Tips
Cutting Problems
Setting Depth of Cut
Feeding Workpiece ..................................... 24
Adjusting Table Alignment
Adjusting/Replacing Knives (G0939)
Rotating/Replacing Cutterhead Inserts
(G0940)
................................................... 3
.................................................... 15
...................................................... 15
..................................................... 18
...................................................... 19
................................................. 21
................................................. 22
........................................................ 28
...................................... 2
........................................... 2
................................. 4
........................ 6
........................ 8
..................................... 10
................ 10
....................... 12
...................... 13
....................................... 15
......................................... 15
....................... 16
...................................... 17
........................................... 17
............................................. 18
........................... 20
..................................... 20
......................................... 22
.................................... 23
........................... 25
........... 26
SECTION 5: ACCESSORIES
SECTION 6: MAINTENANCE
Schedule
Cleaning & Protecting
Lubrication
Replacing Motor Brushes
Cleaning Infeed & Outfeed Rollers
Cleaning Feed Rollers
Tensioning/Replacing Drive Belt
SECTION 7: SERVICE
Troubleshooting
Calibrating Headstock Elevation Scale
Adjusting Cutterhead/Table Parallelism
Calibrating Depth Stop Dial (G0940)
Replacing Table Height Pinion Gears
SECTION 8: WIRING
Wiring Safety Instructions
Wiring Diagram
SECTION 9: PARTS
G0939 Main
G0940 Main
Labels & Cosmetics
WARRANTY & RETURNS
...................................................... 32
................................................... 32
................................... 37
........................................... 37
...................................... 43
............................................ 44
....................................... 45
................................................. 45
................................................. 48
..................................... 51
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INTRODUCTION
We are proud to provide a high-quality owner’s
manual with your new machine!
We
instructions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that
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
current
manuals and
on our web-
site at
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write
down the
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.
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
machine ID label. This will help us help you faster.
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.
Email: manuals@grizzly.com
Contact Info
and manufacture date from the
Grizzly Technical Support
1815 W. Battlefield
Springfield, MO 65807
Phone: (570) 546-9663
Email: techsupport@grizzly.com
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Manual Accuracy
made every effort to be exact with the
sometimes the machine
.
,
e post
manual updates for free
www.grizzly.com.
manufacture date and
Machine Differences
Models G0939 and G0940 are 13" benchtop planers with the following differences:
• Model G0939 has a 3-knife cutterhead with
steel, double-sided knives and a stainless
steel table.
• Model G0940 has a helical cutterhead with
two spirals and 30 indexable carbide inserts,
a granite table, and a cutterhead depth stop
dial.
Manufacture Date
Serial Number
-2-
Model G0939/G0940 (Mfd. Since 12/22)
Identification
To reduce your risk of
serious injury, read this
entire manual BEFORE
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
G0940 Shown
Circuit Breaker
Reset Button
ON/OFF Switch
Table
Return Rollers
Cutterhead
Elevation Crank
Dust Port
Adapter 4"
Motor Brush
Housing
Cutterhead
Depth Stop Dial
Cutterhead
Elevation Scale
Depth-of-Cut
Gauge
Model G0939/G0940 (Mfd. Since 12/22)
using machine.
-3-
Controls &
To reduce your risk of
serious injury, read this
entire manual BEFORE
Components
using machine.
E F
Refer to Figures 1–3 and the following descriptions to become familiar with the basic controls of
this machine.
B
C
A
D
Figure 1. ON/OFF switch and reset button.
A. ON/OFF Switch: Turns motor ON when
moved up; turns motor OFF when moved
down.
Figure 2. Elevation controls and return rollers.
Return Rollers: Assist sliding workpiece
E.
back to operator following planing operation.
Cutterhead Elevation Crank: Raises and
F.
lowers cutterhead. Rotate clockwise to raise
cutterhead; rotate counterclockwise to lower
it. Each full rotation changes elevation
G
Figure 3. Depth stop dial and elevation scale.
1
⁄16".
H
Reset Button: Allows machine to be restarted
B.
after thermal overload protection has tripped.
To reset, place ON/OFF switch in OFF position, 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.
C. ON/OFF Switch Disabling Key: Disables
switch when yellow key is removed to prevent
unauthorized operation of planer.
Depth-of-Cut Gauge: Shows depth of cut
D.
(from 0"–
indicator at bottom of gauge.
-4-
1
⁄8") when workpiece contacts
G. Cutterhead Elevation Scale: Shows eleva-
tion of cutterhead above table. The measurement indicated along top edge of red indicator shows effective thickness of board after
planing.
H. Cutterhead Depth Stop Dial: Allows opera-
tor to pre-set desired finished workpiece
thickness from
Model G0939/G0940 (Mfd. Since 12/22)
1
⁄8"–11⁄4" (G0940 Only).
Internal Components
Front Rear
A. Infeed Roller: Rotates with the direction
of feed to pull the workpiece toward the
cutterhead.
. Chip Breaker: Breaks off chips created by
B
the cutterhead to prevent tear out and diverts
the chips to the dust port.
C. Cutterhead: Holds the knives/inserts that
remove material from the workpiece. Rotates
opposite the direction of feed.
B
A
Workpiece
Figure 4. Workpiece path and major planing components (side cutaway view).
C
F
Chip Deflector: Directs chips into the dust
D.
port.
. Outfeed Roller: Rotates with the direction of
E
feed to pull the workpiece through the planer.
. Planer Table: Provides a smooth, flat sur-
F
face for the workpiece to slide against as
it moves through planer. Planer extension
tables fold up and down for mobility.
D
E
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 precautions are overlooked
or ignored, serious personal injury may occur.
Model G0939/G0940 (Mfd. Since 12/22)
-5-
Machine Data Sheet (G0939)
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0939 13" 2 HP BENCHTOP PLANER
Product Dimensions:
Weight................................................................................................................................................................ 67 lbs.
Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 25-1/2 x 25 x 19 in.
Footprint (Length x Width)..................................................................................................................... 22-1/2 x 13 in.
Shipping Dimensions:
Type............................................................................................................................................................. Cardboard
Content........................................................................................................................................................... Machine
Weight................................................................................................................................................................ 73 lbs.
Length x Width x Height....................................................................................................................... 25 x 17 x 19 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 15A
Minimum Circuit Size.............................................................................................................................................. 20A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 72 in.
Power Cord Gauge......................................................................................................................................... 14 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type.................................................................................................. Paddle Safety Switch w/Removable Key
Motors:
Main
Horsepower................................................................................................................................................ 2 HP
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 15A
Speed............................................................................................................................................. 21,000 RPM
Type............................................................................................................................................ Universal (DC)
Power Transfer ............................................................................................................................................ Belt
Bearings........................................................................................................ Sealed & Permanently Lubricated
Main Specifications:
Main Specifications
Planer Size................................................................................................................................................ 13 in.
Max. Cut Width.......................................................................................................................................... 13 in.
Min. Stock Length........................................................................................................................................ 6 in.
Min. Stock Thickness................................................................................................................................ 1/8 in.
Max. Stock Thickness.................................................................................................................................. 6 in.
Number of Cuts Per Inch................................................................................................................................ 85
Number of Cuts Per Minute..................................................................................................................... 25,500
Cutterhead Speed............................................................................................................................. 8500 RPM
Planing Feed Rate................................................................................................................................. 25 FPM
Max. Cut Depth Planing Full Width......................................................................................................... 1/32 in.
Max. Cut Depth Planing 6-Inch Wide Board........................................................................................... 3/32 in.
-6-
Model G0939/G0940 (Mfd. Since 12/22)
Cutterhead Info
Cutterhead Type........................................................................................................................... Straight Knife
Cutterhead Diameter .................................................................................................................................. 2 in.
Number of Knives............................................................................................................................................. 3
Knife Type.................................................................................................................. SK5, Double Sided, Solid
Knife Size Length....................................................................................................................................... 13 in.
Knife Size Width...................................................................................................................................... 12 mm
Knife Size Thickness.............................................................................................................................. 1/16 in.
Table Info
Table/Headstock Movement........................................................................................................................ 6 in.
Table Bed Size Length.............................................................................................................................. 25 in.
Table Bed Size Width................................................................................................................................ 13 in.
Construction
Table........................................................................................................................................... Stainless Steel
Body.................................................................................................................................... Die-Cast Aluminum
Cutterhead Assembly................................................................................................................................. Steel
Infeed Roller........................................................................................................................................... Rubber
Outfeed Roller......................................................................................................................................... Rubber
Paint Type/Finish................................................................................................................................. Urethane
Other
Measurement Scale....................................................................................................................... Inch & Metric
Number of Dust Ports....................................................................................................................................... 1
Dust Port Size.............................................................................................................................................. 2 in.
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ............................................................................................................. 15 Min.
Serial Number Location ................................................................................................................... Machine ID Label
Sound Rating .............................................................................................................................................. 83 - 85 dB
ISO 9001 Factory .................................................................................................................................................. Yes
Features:
2 HP Universal Motor
13" Wide Planing Capacity
SK5 Double-Sided Knives
3-Knife Cutterhead
25,500 Cuts Per Minute
Stainless Steel Main Table
Built-In Dust Collection System with 2" Port
Convenient Grab Handles for Mobility
4" Dust Port Adapter
Steel Extension Wings
Model G0939/G0940 (Mfd. Since 12/22)
-7-
Machine Data Sheet (G0940)
MACHINE DATA
SHEET
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0940 13" 2 HP BENCHTOP PLANER WITH
HELICAL CUTTERHEAD
Product Dimensions:
Weight................................................................................................................................................................ 78 lbs.
Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 25-1/2 x 28 x 19 in.
Footprint (Length x Width)..................................................................................................................... 21-1/2 x 13 in.
Shipping Dimensions:
Type............................................................................................................................................................. Cardboard
Content........................................................................................................................................................... Machine
Weight................................................................................................................................................................ 82 lbs.
Length x Width x Height....................................................................................................................... 26 x 15 x 19 in.
Must Ship Upright................................................................................................................................................... Yes
Electrical:
Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz
Full-Load Current Rating........................................................................................................................................ 15A
Minimum Circuit Size.............................................................................................................................................. 20A
Connection Type....................................................................................................................................... Cord & Plug
Power Cord Included.............................................................................................................................................. Yes
Power Cord Length.............................................................................................................................................. 72 in.
Power Cord Gauge......................................................................................................................................... 14 AWG
Plug Included.......................................................................................................................................................... Yes
Included Plug Type................................................................................................................................................ 5-15
Switch Type.................................................................................................. Paddle Safety Switch w/Removable Key
Motors:
Main
Horsepower................................................................................................................................................ 2 HP
Phase............................................................................................................................................ Single-Phase
Amps............................................................................................................................................................ 15A
Speed............................................................................................................................................. 21,000 RPM
Type............................................................................................................................................ Universal (DC)
Power Transfer ............................................................................................................................................ Belt
Bearings........................................................................................................ Sealed & Permanently Lubricated
Main Specifications:
Main Specifications
Planer Size................................................................................................................................................ 13 in.
Max. Cut Width.......................................................................................................................................... 13 in.
Min. Stock Length........................................................................................................................................ 6 in.
Min. Stock Thickness................................................................................................................................ 1/8 in.
Max. Stock Thickness.................................................................................................................................. 6 in.
Number of Cuts Per Inch................................................................................................................................ 57
Number of Cuts Per Minute..................................................................................................................... 17,000
Cutterhead Speed............................................................................................................................. 8500 RPM
Planing Feed Rate................................................................................................................................. 25 FPM
Max. Cut Depth Planing Full Width......................................................................................................... 1/32 in.
Max. Cut Depth Planing 6-Inch Wide Board........................................................................................... 3/32 in.
-8-
Model G0939/G0940 (Mfd. Since 12/22)
Cutterhead Info
Cutterhead Type...................................................................................................................................... Helical
Cutterhead Diameter .................................................................................................................................. 2 in.
Number of Cutter Rows.................................................................................................................................... 2
Number of Indexable Cutters.......................................................................................................................... 30
Cutter Insert Type.................................................................................................................. Indexable Carbide
Cutter Insert Size Length.......................................................................................................................... 15mm
Cutter Insert Size Width............................................................................................................................ 15mm
Cutter Insert Size Thickness.................................................................................................................... 2.5mm
Table Info
Table/Headstock Movement........................................................................................................................ 6 in.
Table Bed Size Length.............................................................................................................................. 28 in.
Table Bed Size Width................................................................................................................................ 13 in.
Construction
Table....................................................................................................................................................... Granite
Body.................................................................................................................................... Die-Cast Aluminum
Cutterhead Assembly................................................................................................................................. Steel
Infeed Roller........................................................................................................................................... Rubber
Outfeed Roller......................................................................................................................................... Rubber
Paint Type/Finish................................................................................................................................. Urethane
Other
Measurement Scale....................................................................................................................... Inch & Metric
Number of Dust Ports....................................................................................................................................... 1
Dust Port Size.............................................................................................................................................. 2 in.
Other Specifications:
Country of Origin ................................................................................................................................................ China
Warranty ........................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ............................................................................................................. 15 Min.
Serial Number Location ................................................................................................................... Machine ID Label
Sound Rating .............................................................................................................................................. 83 - 85 dB
ISO 9001 Factory .................................................................................................................................................. Yes
Features:
Granite Table
Adjustable Depth Stop
Helical Cutterhead with 30 Indexable Carbide Inserts
13" Wide Planing Capacity
Dual Roller Returns
Built-In Dust Collection System with 2" Port
Convenient Grab Handles for Mobility
4" Dust Port Adapter
Model G0939/G0940 (Mfd. Since 12/22)
-9-
SECTION 1: SAFETY
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 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. Always use common sense and good judgment.
Indicates an imminently 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.
Alerts the user to useful information about proper operation of the
NOTICE
machine to avoid machine damage.
Safety Instructions for Machinery
OWNER’S MANUAL. Read and understand 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
machine. When machine is not being used, disconnect 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 machinery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
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.
nect machine 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. 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.
Always discon-
-10 -
Model G0939/G0940 (Mfd. Since 12/22)
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 material. Always wear a NIOSH-approved respirator 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. 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 modifications—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 during 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 recommended accessories. Using improper accessories 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 disconnecting 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 intended operation, stop using the machine! Contact our
Technical Support at (570) 546-9663.
Model G0939/G0940 (Mfd. Since 12/22)
-11-
Additional Safety for Planers
Amputation, serious cuts, entanglement, or death can occur from contact with rotating
cutterhead or other moving parts! Flying chips can cause eye injuries or blindness. Workpieces
or knives thrown by cutterhead can strike nearby operator or bystanders with deadly force. To
reduce the risk of these hazards, operator and bystanders MUST completely heed hazards and
warnings below.
KICKBACK. Know how to reduce risk of kickback
and kickback-related injuries. “Kickback” occurs
during operation when the workpiece is ejected
back through infeed side of machine at a high
rate of speed. Kickback is commonly caused by
poor workpiece selection, unsafe feeding techniques, or improper machine setup/maintenance.
Kickback injuries typically occur as follows: (1)
operator/bystanders are struck by workpiece,
resulting in impact injuries (i.e., blindness, broken
bones, bruises, death); (2) operator’s hands are
pulled into blade from outfeed side, resulting in
amputation or severe lacerations.
AVOID CONTACT WITH MOVING PARTS. Never
remove guards/covers or reach inside planer during operation or while connected to power. You
could be seriously injured if you accidentally touch
spinning cutterhead or get entangled in moving
parts. If a workpiece becomes stuck or sawdust
removal is necessary, turn planer OFF, allow cut-
terhead to stop, disconnect power before clearing.
PLANING CORRECT MATERIAL. Only plane
natural wood stock with this planer. DO NOT
plane MDF, OSB, plywood, laminates or other
synthetic materials that can break up inside the
planer and be ejected towards the operator.
LOOKING INSIDE PLANER. Wood chips fly
around inside the planer at a high rate of speed
during operation. To avoid injury from flying material, DO NOT look inside planer during operation.
CUTTING LIMITATIONS. To reduce the risk of
kickback hazards or damage to the machine, do
not exceed the maximum depth of cut or minimum
board length and thickness found in the Data
Sheet. Only feed one board at a time.
INFEED ROLLER CLEARANCE. The infeed
roller is designed to pull material into the spinning
cutterhead. To reduce the risk of entanglement,
keep hands, clothing, jewelry, and long hair away
from the infeed roller during operation.
DULL/DAMAGED KNIVES/INSERTS. Only use
sharp, undamaged knives/inserts. Dull or damaged knives/inserts increase the risk of kickback.
INSPECTING STOCK. To reduce the risk of
kickback injuries or machine damage, thoroughly
inspect and prepare the workpiece before cutting.
Verify workpiece is free of nails, staples, loose
knots, or foreign material. Workpieces with minor
warping should be jointed first or planed with the
cupped side facing the table.
BODY PLACEMENT. Stand to one side of planer
during entire operation to avoid getting hit if kickback occurs.
GRAIN DIRECTION. Planing across grain is hard
on planer and may cause kickback. Plane in same
direction or at a slight angle with wood grain.
-12-
FEED WORKPIECE PROPERLY. To reduce the
risk of kickback, never start planer with workpiece
touching cutterhead. Allow cutterhead to reach
full speed before feeding, and do not change feed
speed during cutting operation.
WORKPIECE SUPPORT. To reduce the risk of
kickback, always make sure workpiece can move
completely across table without rocking or tipping.
Use auxiliary support stands for long stock.
SECURE KNIVES/INSERTS. Loose knives or
improperly set inserts can become dangerous
projectiles or cause machine damage. Always
verify knives/inserts are secure and properly
adjusted before operation.
Model G0939/G0940 (Mfd. Since 12/22)
SECTION 2: POWER SUPPLY
Before installing the machine, consider the availability 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.
or equipment damage
not properly grounded
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.
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 overloading 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
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, consult 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 supply 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.)
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
process. DO NOT connect to power until
Availability
Electrocution, fire, shock,
may occur if machine is
and connected to power
supply.
Serious injury could occur if you connect
machine to power before completing setup
instructed later in this manual.
Circuit Requirements
Nominal Voltage .................... 110V, 115V, 12 0V
..........................................................60 Hz
Cycle
Phase
Power Supply Circuit
........................................... Single-Phase
......................... 20 Amps
Full-Load Current Rating
Full-Load Current Rating at 120V ..... 15 Amps
Model G0939/G0940 (Mfd. Since 12/22)
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
-13-
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 necessary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service personnel 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, disconnect it from power, and immediately replace it with
a new one.
We do not recommend using an extension cord
with this machine.
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:
Grounding & Plug Requirements
it will not fit the outlet, have a qualified
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!
GROUNDED
5-15 RECEPTACLE
Grounding Pin
5-15 PLUG
Extension Cords
If you must use an extension
Neutral Hot
Figure 5. Typical 5-15 plug and 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
electrician install the proper outlet with a
verified ground.
-14-
Minimum Gauge Size ...........................14 AWG
Maximum Length (Shorter is Better).......50 ft.
Model G0939/G0940 (Mfd. Since 12/22)
SECTION 3: SETUP
This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.
,
please
at (570) 546-9663.
IMPORTANT:
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.
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.
Unpacking
If items are damaged
call us immediately
Save all packaging materials until
Needed for Setup
The following are needed to complete the setup
process, but are not included with your machine.
NOTICE
If you cannot find an item on this list, carefully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpacking or they are pre-installed at the factory.
B C
D E
F
I J K
G H
Description Qty
• Safety Glasses ........................................... 1
• Cleaner/Degreaser ..................... As Needed
• Disposable Shop Rags ............... As Needed
• Hex Wrench 4mm ....................................... 1
• Screwdriver Phillips #2 ............................... 1
• Dust Collection System .............................. 1
Inventory
Model G0939/G0940 (Mfd. Since 12/22)
M L
Figure 6. Model G0939/G0940 inventory.
Box 1 (Figure 6) Qty
A. 13" Planer (not shown) ............................... 1
B. Cutterhead Elevation Crank ....................... 1
C. Dust Chute ................................................. 1
Cap Screw M5-.8 x 25 (Elevation Crank) ... 1
D.
E. T-Handle Torx Wrenches T-20 (G0940) ..... 2
Flat Washer 5mm (Elevation Crank) .......... 1
F.
T-Handle Hex Wrench 4mm (G0939) ......... 1
G.
Dust Port Adapter 4" .................................. 1
H.
Knob Bolts M6-1 x 14 (Dust Chute) ............ 2
I.
J. Magnets (G0939) ........................................ 2
Magnet (G0940) ......................................... 1
Hex Wrench 4mm (G0940) ........................ 1
K.
Indexable Carbide Inserts 15 x 15 x 2.5mm
L.
(G0940) ...................................................... 5
Flat Head Torx Screws T-20 M5-.8 x 12
M.
(G0940) ...................................................... 5
-15-
Hardware Recognition Chart
USE THIS CHART TO MATCH UP
HARDWARE DURING THE INVENTORY
AND ASSEMBLY PROCESS.
Flat
Head
Cap
Screw
-16 -
5mm
5mm
Model G0939/G0940 (Mfd. Since 12/22)
or disable start switch or
Refer to the Machine Data Sheet for the weight
and footprint specifications of your machine.
Some workbenches may require additional reinforcement to support the weight of the machine
and workpiece materials.
Consider anticipated workpiece sizes and additional 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
Site Considerations Bench Mounting
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.
Workbench Load
Children and visitors may be
seriously injured if unsupervised around this machine.
Lock entrances to the shop
power connection to prevent
unsupervised use.
Placement Location
Number of Mounting Holes
Dia. of Mounting Hardware Needed
Machine Base
............................ 4
Hex
Bolt
Flat Washer
...........3⁄8"
= Electrical Connection
251/2"
Workbench
Flat Washer
Lock Washer
Hex Nut
Figure 8. Typical "Through Mount" setup.
28"
Lag Screw
Flat Washer
Machine Base
Figure 7. Minimum working clearances.
Model G0939/G0940 (Mfd. Since 12/22)
Workbench
Figure 9. Typical "Direct Mount" setup.
-17-
Assembly
The Model G0939/G0940 comes partially assembled. The cutterhead elevation crank and dust
chute must be installed before operating the
planer.
To assemble planer:
Remove plastic cap from cutterhead eleva-
1.
tion crank, then place crank on elevation
shaft (see Figure 10). Secure crank with
M5-.8 x 25 cap screw and 5mm flat washer.
Do not over-tighten.
Press plastic cap onto crank to cover cap
2.
screw.
Cutterhead Elevation Crank
Dust Collection
This machine creates a lot of wood chips/
dust during operation. Breathing airborne
dust on a regular basis can result in permanent respiratory illness. Reduce your risk
by wearing a respirator and capturing the
dust with a dust-collection system.
Recommended CFM at Dust Port: 150 CFM
Do not confuse this CFM recommendation with
the rating of the dust collector. To determine the
CFM at the dust port, you must consider these
variables: (1) CFM rating of the dust collector,
(2) hose type and length between the dust collector and the machine, (3) number of branches
or wyes, and (4) amount of other open lines
throughout the system. Explaining how to calculate these variables is beyond the scope of
this manual. Consult an expert or purchase a
good dust collection "how-to" book.
Figure 10. Installing cutterhead elevation crank.
3. Rotate cutterhead elevation crank as needed
to remove foam packing from underneath
cutterhead assembly.
4. Install dust chute on fan housing, and secure
with (2) M6-1 x 14 knob bolts (see Figure 11).
Knob Bolts
Dust
Chute
To connect a dust collection hose:
Fit 2 " dust hose over dust port and secure
1.
with hose clamp (see Figure 12).
Figure 12. Dust hose installed onto dust port.
2. Tug hose to make sure it does not come off.
Note: A tight fit is necessary for proper
performance.
Figure 11. Dust port installed on fan housing.
-18-
Model G0939/G0940 (Mfd. Since 12/22)
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
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
ed results that can lead to serious injury,
Serious injury or death can result from
Troubleshooting
The test run consists of verifying the following:
1) The motor powers up and runs correctly, and
2) the safety disabling mechanism on the switch
works correctly.
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.
To test run machine:
Make sure all tools and objects used during
1.
setup are cleared away from machine.
Connect machine to power source.
2.
3. Turn machine ON, verify motor operation,
then turn machine OFF. Motor should run
smoothly and without unusual problems or
noises.
Remove switch disabling key, as shown in
4.
Figure 13.
Figure 13. Removing key from paddle switch to
disable switch and prevent unauthorized use.
may result in malfunction or unexpect-
death, or machine/property damage.
Model G0939/G0940 (Mfd. Since 12/22)
5. Try to start machine with paddle switch.
— If machine does not start, switch disabling
feature is working as designed.
Congratulations, test run is now complete!
— If machine starts, immediately turn
machine OFF and disconnect from power.
The switch disabling feature is not working
correctly. This safety feature must work
properly before proceeding with regular
operations. Call Tech Support for help.
-19 -
SECTION 4: OPERATIONS
The purpose of this overview is to provide the novice machine operator with a basic understanding
of how the machine is used during operation, so
the
discussed later
in this manual
Due to the generic nature of this overview, it is
not intended to be an instructional guide. To learn
more about specific operations, read this entire
manual,
training from experienced
machine operators
outside of this manual by reading "how-to" books,
trade magazines, or websites.
To reduce your risk of
serious injury, read this
entire manual BEFORE
Operation Overview
machine controls/components
are easier to understand.
To complete a typical operation, the operator
does the following:
Examines workpiece to make sure it is suit-
1.
able for planing.
Puts on safety glasses or face shield, a respi-
2.
rator, and ear protection.
Places workpiece on table with flat side down
3.
and correctly adjusts cutterhead height for
workpiece thickness and depth of cut.
seek additional
, and do additional research
using machine.
Eye injuries, respiratory problems, or hearing loss can occur while operating this
tool. Wear personal protective equipment to
reduce your risk from these hazards.
If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable
for accidents caused by lack of training.
-20-
— If workpiece is bowed, operator surface
planes workpiece on a jointer until one
side is flat. Doing so ensures that it will sit
solidly on planer table during operation.
When all safety precautions have been taken,
4.
turns planer ON.
Stands to one side of planer path to reduce
5.
risk of kickback injuries, then feeds workpiece
into planer until infeed roller grabs it.
Note: Infeed and outfeed rollers control feed
rate of workpiece as it passes through planer.
Operator does not push or pull on workpiece.
— If cut is too deep and bogs down planer,
operator immediately reduces depth of
cut.
Once workpiece is clear of outfeed roller and
6.
stops moving, operator removes workpiece
from outfeed table and measures workpiece
thickness. If further planing is required, operator typically lowers cutterhead approximately
1
⁄4 to 1⁄2 turn of the elevation crank, then feeds
workpiece into front of planer again.
Operator continues process until desired
7.
thickness is achieved, then turns machine
OFF.
Model G0939/G0940 (Mfd. Since 12/22)
Workpiece Inspection
Some workpieces are not safe to use or may
require modification before they are. Before cut-
ting, inspect all workpieces for the following:
• Material Type: This machine is only intended for workpieces of natural wood fiber.
Attempting to use workpieces of any other
material that may break apart during operation could lead to serious personal injury and
property damage.
• Foreign Objects: Inspect lumber for defects
and foreign objects (nails, staples, embedded
gravel, etc,). If you have any questions about
the quality of your lumber, DO NOT use it.
Remember, wood stacked on a concrete floor
can have small pieces of stone or concrete
pressed into the surface.
• Large/Loose Knots: Loose knots can
become dislodged during operation. Large
knots can cause kickback and machine damage. Always use workpieces that do not have
large/loose knots.
• Wet or "Green" Stock: Avoid using wood
with a high water content. Wood with more
than 20% moisture content or wood exposed
to excessive moisture (such as rain or snow),
will plane poorly and cause excessive wear to
the machine. Excess moisture can also hasten rust and corrosion of the machine and/or
individual components.
• Excessive Warping: Workpieces with
excessive cupping, bowing, or twisting are
dangerous to plane because they are unstable and often unpredictable when being
planed. DO NOT use workpieces with these
characteristics!
• Minor Cupping: Always true a cupped
workpiece with a jointer prior to planing.
Workpieces with slight cupping can be safely
supported if the cupped side is facing the
table. Avoid planing a workpiece bowed
side-down, which can cause rocking during
planing and potential kickback.
Wood Types
The species of wood, as well as its condition,
greatly affects the depth of cut the planer can
effectively take with each pass.
The chart in the figure below shows the Janka
Hardness Rating for a number of commonly
used species. The higher the number, the harder
the workpiece, and the less material should be
removed in any one pass for good results.
Note: The Janka Hardness Rating is expressed in
pounds of force required to embed a 0.444" steel
ball into the surface of the wood to a depth equal
to half the ball's diameter.
Janka
Species
Ebony 3220
Red Mahogany 2697
Rosewood 178 0
Red Pine 1630
Sugar Maple 1450
White Oak 1360
White Ash 1320
American Beech 1300
Red Oak 129 0
Black Walnut 1010
Teak 1000
Black Cherry 950
Cedar 900
Sycamore 770
Douglas Fir 660
Chestnut 540
Hemlock 500
White Pine 420
Basswood 410
Eastern White Pine 380
Balsa 100
Figure 14. Janka Hardness Rating for some
common wood species.
Hardness
Model G0939/G0940 (Mfd. Since 12/22)
-21-
Planing Tips
Cutting Problems
• Inspect your lumber for twisting or cupping,
and surface one face on a jointer if necessary
before planing workpiece.
Scrape off all glue when planing glued-up
•
panels. Dried glue can quickly dull knives.
DO NOT plane more than one piece at a
•
time.
Never remove more than the recommended
•
amount of material on each pass. Only
remove a small amount of material on each
pass when planing wide or dense stock.
Support the workpiece on both ends. Get
•
assistance from another person if you are
planing long lumber, or use roller stands to
support the workpiece.
Measure the workpiece thickness with cali-
•
pers to get exact results.
• Carefully inspect all stock to make sure it is
free of large knots or foreign objects that may
damage your knives, cause kickback, or be
ejected from the planer.
When possible, plane equal amounts on
•
each side of the board to reduce the chance
of twisting or cupping.
Use the entire width of the planer to wear
•
knives evenly. With narrow workpieces, alternate between far left, far right, and the middle
of the table. Your knives will remain sharp
much longer.
To avoid "chip marks," always plane WITH
•
the grain direction of the wood. Never plane
cross-grain or end-grain.
• Plane ONLY natural wood fiber. Do not
plane wood composites or other materials
that could break up in the planer and cause
operator injury or damage to planer.
Below is a list of wood characteristics you may
encounter when planing. The following descriptions of defects will give you some possible
answers to problems you may encounter while
planing different materials. Possible solutions follow the descriptions.
Chipped Grain
Problem: Usually a result of cutting against the
grain, planing lumber with knots or excessive
amount of cross grain, or using dull knives/inserts.
Solution: Decrease the depth of cut. Inspect your
lumber and determine if its grain pattern is causing the problem. If the lumber does not show substantial cross grain, inspect your knives/inserts.
Fuzzy Grain
Problem: Usually caused by planing lumber
containing too much moisture. Sometimes fuzzy
grain is an unavoidable characteristic of some
woods, such as basswood. Fuzzy grain can also
be caused by dull knives/inserts.
Solution: Check the lumber with a moisture
meter. If moisture is greater than 20%, sticker the
lumber and allow it to dry. Otherwise, inspect the
knife condition.
Snipe
Problem: Occurs when board ends have more
material removed than the rest of the board.
Usually caused when the workpiece is not properly supported as it goes through the machine. In
many cases, however, a small amount of snipe is
inevitable.
Solution: The best way to deal with snipe is by
planing lumber longer than your intended work
length and then cutting off the excess after planing is completed.
• Always true cupped or warped stock on a
jointer before planing.
-22-
Model G0939/G0940 (Mfd. Since 12/22)
Pitch & Glue Build-up
Problem: Glue and resin buildup on the rollers
and cutterhead will cause overheating by decreasing cutting sharpness while increasing drag in the
feed mechanism. The result can include scorched
lumber, uneven knife/insert marks, and chatter.
Solution: Clean the rollers and cutterhead.
Chip Marks or Indentations
Problem: Chip indentation or chip bruising is the
result of wood chips not being thrown away from
the cutterhead and out of the machine. Instead
they are carried around the cutterhead, deposited
on the planed surface and crushed by the outfeed
roller. Some of the causes of chip indentation are:
Wood chips/sawdust not being properly
•
expelled from the cutterhead.
The type of lumber being planed. Certain
•
species have a tendency to chip bruise.
A high moisture content (over 20%) or sur-
•
face moisture (refer to Page 21).
Setting Depth of Cut
Table Movement per Handwheel Revolution
One Full Revolution
The depth of cut on a planer means the amount
of material that is removed from the top of the
workpiece as it passes underneath the cutterhead.
The depth of cut is set by adjusting the distance
of the cutterhead above the table. This distance is
the thickness of the workpiece minus the depth of
cut. The planing depth of cut is controlled by using
the cutterhead elevation crank on the right side of
the machine. Rotating the crank clockwise raises
the headstock.
Although the correct depth of cut varies according to wood hardness and workpiece width, we
recommend the maximum depth of cut (per pass)
be no more than
give better end results and put less stress on the
planer than trying to take off too much material in
a single pass.
........................................1⁄16"
1
⁄16". A series of light cuts will
Dull knives/inserts.
•
• Excessive depth of cut.
Solution:
Use a proper dust collection system; adjust
•
chip deflector in or out as necessary.
Lumber must be completely dry, preferably
•
kiln-dried (KD). Air-dried (AD) lumber must
be seasoned properly and have no surface
moisture. DO NOT surface partially-air-dried
(PAD) lumber.
Make sure planer knives/inserts are sharp.
•
• Reduce depth of cut.
Rippled Cut
Problem: Regularly spaced indentations across
face of workpiece are caused by excessive
outfeed roller pressure or excessive feed rate.
Solution: Reduce outfeed roller pressure; reduce
feed rate.
The depth-of-cut scale functions as a general
guide only, and is not intended for low-tolerance,
precision results. A small amount of backlash
may be present with the cutterhead elevation
crank after switching height directions. Switching
1
height direction may cause slightly less than
⁄16"
backlash during the first crank turn. As the crank
is turned more rotations in the same direction,
backlash will not be a factor.
1
⁄2 Turn
=1⁄32"
1
⁄4 Turn
=1⁄64"
Up
Down
3
⁄4 Turn
=3⁄64"
1 Turn
1
⁄16"
=
Figure 15. Crank elevation increments.
Model G0939/G0940 (Mfd. Since 12/22)
-23-
Elevation Scale
The elevation scale (see Figure 16) on the righthand side cover at the front of the machine shows
workpiece thickness after it leaves the planer. The
thickness measurement is indicated by the top
edge of the red Line.
Feeding Workpiece
The feed rate on this planer is automatically set
at 25 FPM. Infeed and outfeed rollers move the
workpiece through the planer while keeping it
firmly against the table and providing a consistent
rate of movement.
To feed workpiece into planer:
Scale
Red Line
Figure 16. Positioning elevation scale.
Note: The cutterhead elevation scale does not
provide a precise measurement and should only
be used for approximate measurements. If precise workpiece thicknesses are needed, use
calipers to ensure your workpieces meet your
standards.
Depth Stop Dial (G0940)
The depth stop dial (see Figure 17) on the righthand side of the machine allows the operator to
pre-set workpiece thickness. The workpiece thickness is indicated by the white dot on the depth
stop dial pointing to the thickness scale.
Place workpiece on table with side to be
1.
planed facing up toward cutterhead.
Note: Boards more than 24" long should be
supported on both sides of planer.
Lower cutterhead until depth bar (see Figure
2.
18) just touches workpiece.
Depth
Bar
Infeed
Outfeed
To adjust the dial, rotate the cutterhead elevation
crank to raise the cutterhead assembly, rotate
the dial to the preferred thickness, then lower the
cutterhead assembly until it gently rests on the
depth stop.
Scale
Depth
Stop
Dial
Figure 17. Depth stop dial and scale.
-24-
Figure 18. Basic planing operation setup.
Note: Any time you switch directions with
cutterhead elevation handle, there will be a
small amount of backlash—so the first full
crank of the handle after switching directions
will be slightly less than
long as you move the handle in the same
direction during operation, backlash will not
be a factor.
Model G0939/G0940 (Mfd. Since 12/22)
1
⁄16". However, as
3. Rotate cutterhead elevation crank ¼ turn
clockwise to raise cutterhead approximately
1
⁄64". This will set depth of cut to 1⁄32". Remove
workpiece from planer.
Turn planer ON.
4.
Feed workpiece into front of planer, making
5.
sure not to stand directly in front of or behind
workpiece to reduce the risk of a kickback
injury.
To adjust extension table height:
1. To check alignment, lay a straightedge across
bed and both wings (see Figure 19).
— If cut is too deep and bogs down planer,
turn planer OFF immediately and allow it to
stop. Raise cutterhead, remove workpiece,
reduce depth of cut, then repeat Step 5.
Note: Infeed and outfeed rollers will automatically pull workpiece through planer during
operation. Do not push or pull on workpiece
once feed rollers have engaged it.
Once workpiece is clear of outfeed roller,
6.
measure workpiece thickness. If further planing is needed, lower cutterhead another
1
⁄32") of the elevation crank handle, and
turn (
repeat cutting operation.
Continue the process described above until
7.
desired workpiece thickness is reached.
Elevation scale shows approximate thickness of workpiece after it has been cut.
Use this indicator to judge when thickness
is approximately correct. For more precise
applications, measure workpiece thickness
with calipers during cutting operation.
Straightedge
Figure 19. Aligning extension wings.
2. Loosen stop nut and adjustment bolt under-
neath each extension wing (see Figure 20).
1
⁄2
Adjustment Bolt
Stop Nut
Figure 20. Location of components for adjusting
table.
Rotate adjustment bolts so wings and table
3.
are on the same plane.
Adjusting Table
Alignment
The front and rear table heights are adjustable for
proper workpiece contact throughout the cut.
Tools Needed Qty
Open-End Wrench 10mm .................................. 2
Precision Straightedge 24"
Phillips Head Screwdriver #2
Model G0939/G0940 (Mfd. Since 12/22)
................................ 1
............................ 1
Note: No gap should be visible beneath
straightedge when tables are properly
aligned.
Use one wrench to prevent adjustment bolt
4.
from rotating while using other wrench to
tighten. Recheck table height from side to
side, then tighten stop nut to secure the
setting.
-25-
accidental startup, always
disconnect machine from
Adjusting/Replacing
Knives (G0939)
The knives on this planer are extremely
sharp and can quickly cause serious injury
to your hands or fingers. Always wear heavy
leather gloves when handling these knives
to reduce the risk of cutting injuries.
To maintain accurate and consistent planing results, we do not recommend sharpening knives yourself. Instead, just replace
dull knives or have them professionally
sharpened.
The knives on the Model G0939 Planer are
reversible and should always be reversed or
replaced as a matched set. To avoid downtime,
we recommend having an extra set of knives for
your planer.
To reduce risk of shock or
power before adjustments,
maintenance, or service.
Tools Needed Qty
Hex Wrench 4mm .............................................. 1
Leather Gloves
Phillips Head Screwdriver #2
Magnet (for knife removal/installation)
...........................................1 Pair
............................ 1
............... 1
Removing Knives
1. DISCONNECT MACHINE FROM POWER!
2. Lower cutterhead as far as it will go, then
remove dust chute and dust shroud from
headstock (see Figure 21).
Note: Rotate cutterhead to orient knife point-
ing upward. Cutterhead should lock in place
once dust shroud is removed.
Dust Shroud
Before re-installing the knives, the cutterhead,
gib, and knives must be inspected. Neglecting to
inspect these components may result in damage
to the planer.
The condition of the knives on the Model G0939
will affect the precision of the cut. During operation, watch for the following signs of dulled knives:
• Raised grain occurs as a result of dull knives
hammering at the surface of the wood.
• A "fuzzy" appearance on the surface of the
wood occurs as a result of dull knives tearing,
rather than cutting the wood fibers.
Ridges occur as a result of nicks along the
•
knife edge.
Difficulty feeding the workpiece into the
•
planer.
If any of these signs become apparent during use,
the knives should be reversed or replaced.
Dust Chute
Figure 21. Components to be removed to
access cutterhead.
-26-
Model G0939/G0940 (Mfd. Since 12/22)
3. Loosen six gib screws securing first knife
(see Figure 22).
Inspecting Cutterhead, Gib, and Knives
1. DISCONNECT MACHINE FROM POWER!
Tip: When loosening gib screws, insert hex
wrench firmly into screw head, then twist
wrench with a powerful turn. This method
will break the screw free and help prevent
stripping the head.
Figure 22. Example of removing screws
securing knife to cutterhead.
4.
Use magnets to carefully slide knife out of
cutterhead.
5. Press safety latch to disengage cutterhead
lock (see Figure 23), then carefully rotate
cutterhead approximately ¼-turn. Release
safety latch and continue rotating cutterhead
until next knife slot is exposed and safety
latch again engages.
2. Carefully clean the cutterhead with a rag, and
with a flashlight inspect the following:
Make sure the threaded screw holes do
•
not contain wood material or sawdust.
• Make sure that the hex socket and the
threads of all cap screws are in good condition. Replace if questionable.
• Make sure any resin or glue buildup
on the cutterhead, gib, and knives is
removed so the knife and gib will sit flat
on the cutterhead.
• Make sure the knives are free of cracks.
If any cracks exist, replace both knives.
Installing Knives
1. DISCONNECT MACHINE FROM POWER!
2. Using included magnets, align knife with two
pins on cutterhead. Be sure knife is oriented
with beveled edge up, as shown in Figure 24.
Beveled Edge Up
Cutterhead
Safety Latch
Figure 23. Disengaging cutterhead lock.
Repeat Steps 3–4 to remove remaining
6.
knives.
Model G0939/G0940 (Mfd. Since 12/22)
Figure 24. Example of installing knife with
magnet.
-27-
3. Install gib over knife, and slightly tighten gib
34
screws, starting at middle and working your
way to ends by alternating left and right, as
shown in Figure 25.
Rotating/Replacing
Cutterhead Inserts
(G0940)
The helical cutterhead is equipped with indexable
carbide inserts that can be rotated to reveal any
one of their four cutting edges. If one edge of the
insert becomes dull or damaged, simply rotate it
90° to reveal a fresh cutting edge, as shown in
Figure 26.
5
Figure 25. Gib screw tightening sequence.
4.
Press safety latch to disengage cutterhead
lock (see Figure 23), then carefully rotate
cutterhead approximately ¼-turn. Release
safety latch and continue rotating cutterhead
until next knife slot is exposed and safety
latch again engages.
Repeat Steps 2–3 for remaining knives, then
5.
replace dust shroud and dust chute.
12
6
Figure 26. Insert rotating sequence.
Items Needed Qty
Torque Wrench .................................................. 1
T-Handle Torx Wrench T-20
Heavy Leather Gloves
Light Machine Oil............................... As Needed
To rotate or replace a helical cutterhead insert:
DISCONNECT MACHINE FROM POWER!
1.
2. Remove dust chute and dust shroud (see
Figure 27).
Dust Shroud
.............................. 1
................................1 Pair
-28-
Dust Chute
Figure 27. Components to be removed to
access helical cutterhead.
Model G0939/G0940 (Mfd. Since 12/22)
3.
Put on heavy leather gloves to protect your
fingers and hands.
The carbide inserts are very sharp and
can quickly cut your hands. ALWAYS use
caution and heavy leather gloves when
handling these parts to reduce the risk of
personal injury.
4. Remove any sawdust or debris from head of
insert, Torx screw, and surrounding area.
Remove Torx screw and insert, then clean all
5.
dust and debris from both parts and pocket
they were removed from.
Note: Proper cleaning of insert, Torx screw,
and cutterhead pocket is critical to achieving
a smooth finish. Dirt or dust trapped between
insert and cutterhead will raise insert, and
make marks on your workpiece when planing.
6.
Rotate insert 90° and install so that a fresh
cutting edge faces outward (see Figure 26).
— When all four insert cutting edges have
been used, replace insert with a new one.
Always position insert reference dot in
same position when installing a new insert
to aid in rotational sequencing.
Lubricate Torx screw threads with a very
7.
small amount of light machine oil, wipe
excess off, and torque screw to 50–55 inch/
pounds.
Note: If too much oil is applied to the threads,
excess oil will attempt to squeeze out of the
threaded hole and raise insert during installation, bringing it out of height alignment.
When finished, re-install dust shroud and
8.
dust hood.
Tip: Use low-pressure compressed air or
a vacuum nozzle to clean out cutterhead
pocket.
Model G0939/G0940 (Mfd. Since 12/22)
-29-
SECTION 5: ACCESSORIES
Installing unapproved accessories may
order online at www.grizzly.com or call 1-800-523-4777
cause machine to malfunction, resulting in
serious personal injury or machine damage.
To reduce this risk, only install accessories
recommended for this machine by Grizzly.
NOTICE
Refer to our website or latest catalog for
additional recommended accessories.
Basic Eye Protection
T32323—Woodturners Face Shield
T32401—EDGE Brazeau Safety Glasses, Clear
T32402—EDGE Khor G2 Safety Glasses, Tint
T32404—EDGE Mazeno Safety Glasses, Clear
T32323 T32401
T24736—Carbide Replacement Inserts
Solid carbide indexable inserts for G0940.
Size: 15 x 15 x 2.5mm (10 pack).
Figure 28. Replacement inserts for Model
G0940.
T32549—Set of 3 Planer Knives
These steel knives measure 13" x
are designed to fit the G0939.
1
⁄2 " x 1⁄16" and
T32402
Figure 30. Assortment of basic eye protection.
G4682—Dry Coating Lube
Spray on saw blades, router bits, shaper cutters
— even table tops — to form a low-friction coating that works great, even under high temperature
and pressure. Contains no silicone or oil, so it
won’t stain or damage paint or wood finishes.
9.5 oz.
T32404
Figure 31. G4682 Dry Coating Lube.
Figure 29. HSS Planer Knives for Model G0939.
-30-
Model G0939/G0940 (Mfd. Since 12/22)
order online at www.grizzly.com or call 1-800-523-4777
D3640—Shop Fox Tool Table Plus
This tool table was designed to answer customer
requests for a slightly wider and taller table to
accommodate a variety of benchtop machines.
The table top is 1 1⁄4" thick and measures 14" x
40". The table stands 33" tall and has a maximum
capacity of 700 lbs.
T10456—Heavy-Duty Anti-Fatigue Mat 3' x 5'
This Heavy-Duty Anti-Fatigue Mat features beveled edges and no-slip tread for safety and
comfort. Open-hole design allows liquid to drain
through, so it's perfect for wet or oily conditions.
3
Measures 3' wide x 5' long x
⁄8" thick.
Figure 34. T10456 Anti-Fatigue Mat.
Figure 32. D3640 Shop Fox Tool Table Plus.
T30673—Heavy-Duty Roller Stand
This stand comes with 2" steel ball bearing rollers
that assist with infeed and outfeed support. With
the heavy-duty cast-iron base, this stout roller
stand helps support lumber, piping, and more up
to 2000 pounds! With three holes on the base,
it can even be bolted to the floor for increased
stability. Height can be easily adjusted from 24" to
38", and the stand measures 14" wide.
G0944—1
1
⁄2 HP Wall-Mount Dust Collector
With an airflow capacity of 1250 CFM and a canister filter with a 1-micron filtration rating, this is
the beast you need for all your small shop dustcapturing needs. The easy-to-hang French cleatstyle mount makes hanging this unit quick, and
clears up floor space in a small shop.
Figure 33. T30673 Heavy-Duty Roller Stand.
Figure 35. G0944 1 1⁄2 HP Wall-Mount Dust
Collector with Canister Filter.
Model G0939/G0940 (Mfd. Since 12/22)
-31-
SECTION 6: MAINTENANCE
accidental startup, always
disconnect machine from
Cleaning &
To reduce risk of shock or
power before adjustments,
maintenance, or service.
Schedule
For optimum performance from this machine, this
maintenance schedule must be strictly followed.
Ongoing
To minimize your risk of injury and maintain proper
machine operation, shut down the machine immediately if you ever observe any of the items below,
and fix the problem before continuing operations
• Loose mounting bolts.
• Damaged knives/inserts.
Worn or damaged wires.
•
Any other unsafe condition.
•
Monthly Check
• Clean chains and sprockets of dust, wood
chips, and old grease.
• Lightly coat chains and sprockets with NLGI#2
grease (see Page 33).
• Lubricate elevation leadscrews with spray
lubricant.
• Check belt for tension, damage, or wear (see
Page 36). Also, ensure belt is clean and free
of oil or grease that could cause it to slip.
• Remove dust hood, and thoroughly clean
built-up sawdust and chips.
Protecting
Cleaning the Model G0939/G0940 is relatively
easy. Vacuum excess wood chips and sawdust,
and wipe off the remaining dust with a dry cloth.
If any resin has built up, use a resin-dissolving
cleaner to remove it.
Lubrication
There are four primary systems that require periodic lubrication: the cutterhead elevation leadscrews, the feed roller chain drive, the table height
chain, and columns. Clean the components in this
section with an oil/grease solvent cleaner or mineral spirits before applying lubrication.
Items Needed Qty
Stiff Brush .......................................................... 1
Shop Rags
Mineral Spirits .................................... As Needed
Grease T26419 or NLGI#2 or Equiv.
Hex Wrench 4mm
Elevation Leadscrews & Columns
Grea s e Type ................ G4682 Dry Coating Lube
Frequency
To lubricate elevation leadscrews & columns:
1. DISCONNECT MACHINE FROM POWER!
2. Lower headstock fully and remove top and
side covers to expose (2) leadscrews.
......................................... As Needed
. As Needed
.............................................. 1
................................................Monthly
-32-
Model G0939/G0940 (Mfd. Since 12/22)
Vacuum chips and dust off leadscrews (see
3.
Figure 36).
Column
(1 of 4)
Figure 36. Location of cutterhead elevation
leadscrews (G0939 shown).
4. Use mineral spirits, stiff brush, and shop rags
to remove old lubricant.
Leadscrew
(1 of 2)
To lubricate feed roller chain drive:
1. DISCONNECT MACHINE FROM POWER!
Remove top and side covers to expose
2.
sprockets and chains (see Figure 37).
Use mineral spirits, stiff brush, and shop rags
3.
to clean old grease from chains.
Apply light coating of grease to chain linkage
4.
and sprockets.
5. Re-install covers.
Headstock Height Pinion Gears
Oil Type ................. T27914 or ISO 68 Equivalent
Frequency
To lubricate table height gears:
DISCONNECT MACHINE FROM POWER!
1.
................................................Monthly
Spray lubricant onto each leadscrew and
5.
column (see Figure 36), taking care to keep it
off the belt. Move cutterhead up and down to
evenly distribute.
Feed Roller Chain Drive
Grea s e Type ......... T26419 or NLGI#2 Equivalent
Frequency
Figure 37. Cutterhead elevation leadscrews and
feed roller drive chain exposed for lubricating.
................................................Monthly
Feed Roller Chain
Sprockets
2. Gently tilt machine onto its back (see Figure
38) to expose gears.
Pinion Gears
Shaft
Figure 38. Headstock height pinion gears
exposed for lubricating.
3.
Use mineral spirits and shop rags to clean
pinion gears and shaft.
Allow mineral spirits to dry, then apply light
4.
coat of oil to surfaces.
Model G0939/G0940 (Mfd. Since 12/22)
Tilt machine back onto base.
5.
6. Move cutterhead up and down to evenly
distribute oil.
-33-
Replacing Motor
Cleaning Infeed &
Brushes
The motor on the G0939/G0940 is equipped with
two long-life carbon brushes—one on the front
and one on the back of the motor. The brush life is
affected by motor loads and usage. Worn brushes
will result in intermittent operation and difficulty
starting the motor. If either brush is worn down to
1
⁄4" (6mm) or less, replace both brushes as a set.
Tools Needed Qty
Flat Head Screwdriver ....................................... 1
Motor Brushes (PN P0939077)
To check/replace motor brushes:
1. DISCONNECT MACHINE FROM POWER!
Unscrew plastic brush covers, and remove
2.
motor brush assemblies (see Figure 39).
Note: As you remove brush assembly, make
note of carbon tip orientation. If found acceptable, re-install in same way.
......................... 2
Outfeed Rollers
Saw dust and workpiece grime can accumulate
on the infeed and outfeed rollers, creating inconsistent pressure on the workpiece as it is fed
through the cutterhead.
To clean infeed & outfeed rollers:
DISCONNECT MACHINE FROM POWER!
1.
2. Raise headstock completely to expose infeed
and outfeed rollers (see Figure 40).
Clean rubber infeed and outfeed rollers with
3.
solvent to remove any pitch or stuck-on
chips.
Brush Assembly
Figure 39. Removing front motor brush.
3. Measure length of carbon tip. If carbon tip is
worn down to
brush assemblies with new ones.
Insert brush assemblies back into motor, and
4.
re-install plastic caps.
1
⁄4" (6mm) or less, replace both
Figure 40. Cleaning infeed roller.
4. Use a vacuum and clean brush to remove
any trapped material from between roller and
headstock.
-34-
Model G0939/G0940 (Mfd. Since 12/22)
Cleaning Feed
Periodically check and clean chips and sawdust
from between the bushing blocks and brackets.
Rollers
The feed rollers rotate in bushing blocks that are
spring loaded. The feed rollers ride up on the
board so that the roller pressure is maintained.
If chips or sawdust build up between the bracket
and bushing block (see Figure 41), the amount
of roller vertical travel will be reduced, potentially
causing improper feeding of workpiece through
the machine.
Bracket
Bushing
Block
Items Needed Qty
4'' Tall Block of Wood ........................................ 1
To clean feed rollers:
1. DISCONNECT MACHINE FROM POWER!
Place a 4'' tall block of wood between one
2.
feed roller and planer table. Ensure block of
wood is not under cutterhead.
Lower cutterhead assembly just enough so
3.
roller is pushed up against spring and pressure is off of two brackets.
Remove any trapped material from between
4.
roller assembly and bracket.
Figure 41.
bushing block and the bracket.
Sawdust can get trapped between the
Model G0939/G0940 (Mfd. Since 12/22)
-35-
Tensioning/
Replacing Drive Belt
The drive belt transfers power from the motor to
the cutterhead, and to the infeed and outfeed rollers. To ensure efficient transfer of power to these
systems, make sure the belt is always properly
tensioned and in good condition.
6.
Loosen motor tension cap screw (see Figure
42) to reduce belt tension, and roll old belt off
pulleys.
Loop new belt completely around motor
7.
pulley but only halfway on cutterhead pulley.
While applying pressure to belt with one
8.
hand, slowly rotate motor pulley to fully seat
belt in grooves.
If the belt is worn, cracked, or damaged, replace
it immediately.
Tools Needed Qty
Hex Wrenches 4, 6mm ...................................... 1
To tension/replace drive belt:
DISCONNECT MACHINE FROM POWER!
1.
2. Raise headstock completely.
3. Remove top and right-hand covers.
4. Remove cutterhead depth stop dial (see
Figure 17 on Page 24).
Lift side cover up and away from machine to
5.
expose drive belt and pulleys, as shown in
Figure 42.
Note: Belt is correctly tensioned when there
is approximately
ate pressure is applied midway between pulleys, as illustrated in Figure 43. Lift motor to
adjust deflections, then tighten motor tension
cap screw.
Approximately
3
⁄8" Deflection
Figure 43. Correct amount of belt deflection.
3
⁄8" deflection when moder-
Cutterhead
Pulley
Motor
Pulley
Motor Pulley
Motor Tension
Cap Screw
Cutterhead
Belt
Figure 42. Drive belt and pulleys (G0939
shown).
-36-
Pulley
9.
When belt is fully on both pulleys, rotate it
several times to make sure belt ribs are properly seated in pulley grooves.
— If belt ribs are not properly seated, roll belt
off pulleys and repeat Steps 6–8 until they
are.
Replace side cover, secure top cover, and
10.
re-install cutterhead depth stop dial.
Model G0939/G0940 (Mfd. Since 12/22)
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
the
serial number and manufacture date of your machine before calling.
SECTION 7: SERVICE
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather
Troubleshooting
Motor & Electrical
Symptom Possible Cause Possible Solution
Machine does not
start, or power
supply breaker
immediately trips
after startup.
Machine stalls or is
underpowered.
Machine has
vibration or noisy
operation.
1. Switch disabling key removed.
2. Machine circuit breaker tripped or at fault.
3. Incorrect power supply voltage or circuit
size.
4. Power supply circuit breaker tripped or fuse
blown.
5. Wiring broken, disconnected, or corroded.
6. Motor brushes worn out.
7. ON/OFF or circuit breaker switch at fault.
8. Motor or motor bearings at fault.
1. Workpiece material not suitable for
machine.
2. Machine undersized for task.
3. Dull knives/inserts.
4. Belt slipping; improper belt tension or oil/
grease on belts.
5. Motor brushes worn out.
6. Dust collection problem causing internal
components to clog up with shavings.
7. Pulley/sprocket slipping on shaft.
8. Motor overheated, tripping machine circuit
breaker.
9. Motor or motor bearings at fault.
1. Motor or component loose.
2. Planer not resting evenly on stand/
workbench.
3. V-belt worn/loose, pulleys misaligned, or
belt slapping cover.
4. Knives/gibs at fault.
5. Pulley loose.
6. Cutterhead bearings at fault.
7. Motor bearings at fault.
1. Install switch disabling key.
2. Reset circuit breaker on switch (Page 4).
3. Ensure correct power supply voltage and circuit size
(Page 13).
4. Ensure circuit is free of shorts. Reset circuit breaker
or replace fuse.
5. Fix broken wires or disconnected/corroded
connections.
6. Remove/replace brushes (Page 34).
7. Replace switch/circuit breaker.
8. Replace motor.
1. Only cut wood/ensure moisture is below 20% (Page
21).
2. Use correct blades/inserts or reduce depth of cut
(Page 23).
3. Use sharp knives/inserts.
4. Clean/tension/replace belt (Page 36).
5. Replace motor brushes (Page 34).
6. Clear blockages in dust chute/ducting. Ensure dust
collector is operating efficiently.
7. Tighten/replace loose pulley/shaft.
8. Clean motor/let cool, and reduce workload. Reset
breaker.
9. Replace motor.
1. Inspect/tighten loose bolts/nuts; replace damaged
components.
2. Shim under planer.
3. Tension/replace belt (Page 36). Re-align pulleys if
necessary.
4. Resharpen/replace knives; set knife alignment
correctly (Page 26).
5. Secure pulley on shaft.
6. Replace bearing(s).
7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
Model G0939/G0940 (Mfd. Since 12/22)
-37-
Operation
Symptom Possible Cause Possible Solution
Excessive snipe
(gouge at the end of
the workpiece that is
uneven with the rest
of the cut).
Note:
A small
amount of snipe is
inevitable with all
types of planers—
the key is to
minimize it.
Workpiece stops/
slows in middle of
cut.
Chipping (consistent
pattern).
Fuzzy grain.
Long lines or ridges
that run along length
of board.
Glossy surface.
Infeed/outfeed
rollers not rotating.
1. Table extension wings (or aftermarket
support table) not aligned with main table.
2. Workpiece not properly supported as it
leaves planer.
3. Some snipe is inevitable.
1. Excessive depth of cut.
2. Feed rollers too low or too high.
3. Pitch and glue build up on planer
components.
1. Knots or conflicting grain direction in wood.
2. Taking too deep of a cut.
3. Nicked or chipped knife/insert.
1. Wood may have high moisture content or
surface wetness.
2. Dull knives/inserts.
1. Nicked or chipped knife/inserts. 1. Replace knives (Page 26) or have them
1. Dull knives/inserts.
2. Cutting depth too shallow.
1. Chain and sprockets are worn,
misadjusted, disconnected, or broken.
1. Adjust rear extension wing hex bolts to align
extension wing with main table (Page 25).
2. Hold workpiece up slightly as it leaves outfeed end
of planer.
3. Plane lumber longer than your intended workpiece
length, then cut off excess after planing complete.
1. Reduce depth of cut (Page 23). (Reduce cutting
depth when planing hard woods.)
2. Raise/lower feed rollers (Page 35).
3. Clean internal planer components with a pitch/resin
dissolving solvent.
1. Inspect workpiece for knots and grain direction; only
use clean stock, and cut WITH the grain.
2. Reduce depth of cut (Page 23). (Reduce cutting
depth when planing hard woods.)
3. Replace affected knife (Page 26) or have it
sharpened; rotate/replace inserts (Page 28).
1. Check moisture content is below 20% and allow to
dry if moisture is too high (Page 21).
2. Replace knives (Page 26) or have them
professionally sharpened; rotate/replace inserts
(Page 28).
professionally sharpened; rotate/replace inserts
(Page 28).
1. Replace knives (Page 26) or have them
professionally sharpened; rotate/replace inserts
(Page 28).
2. Increase depth of cut (Page 23).
1. Adjust chain and sprockets; replace if necessary.
-38-
Model G0939/G0940 (Mfd. Since 12/22)
Calibrating Headstock
Adjusting Cutterhead/
Elevation Scale
Although correctly set at the factory, the scale can
be adjusted for accuracy if it becomes necessary.
Tools Needed Qty
Phillips Screwdriver #2 ...................................... 1
Scrap Piece of Stock
Calipers
To calibrate scale:
Plane scrap piece of stock until it is flat on
1.
Note: Turn scrap board over between each
Use calipers to measure board thickness.
2.
3. If there is a discrepancy between board thick-
............................................................. 1
both sides and has even thickness along its
length.
pass to make surfaces parallel.
ness and reading on elevation scale, loosen
Phillips head screws shown in Figure 44,
adjust position of red line to indicate correct
thickness, then tighten screws.
......................................... 1
Table Parallelism
The cutterhead/table parallelism has been correctly set at the factory. However, it can be readjusted for accuracy if the cutterhead assembly
shifts over time.
Tools Needed Qty
Hex Wrenches 2.5, 3, 4mm .........................1 Ea.
Open-End Wrenches 22, 24mm
1
⁄2 " x 12" Piece of Stock ................................... 2
1
To adjust cutterhead/table parallelism:
DISCONNECT MACHINE FROM POWER!
1.
2. Ensure knives (G0939) are adjusted prop-
erly. (Refer to Adjusting/Replacing Knives
on Page 26 for detailed instructions.)
Place both pieces of stock on either side of
3.
table, and lower headstock until cutterhead
just touches (see Figure 45).
Note: Having wood blocks at an even height
is critical to the accuracy of your overall
adjustments. For best results, square stock
with a jointer and table saw before using as a
gauge.
..................1 Ea.
Scale Indicator
Phillips Head
Screws
Figure 44. Elevation scale components used to
calibrate thickness reading.
Model G0939/G0940 (Mfd. Since 12/22)
Line
Wood Blocks
12"
Cutterhead
Figure 45. Checking cutterhead parallelism.
-39-
4. Check cutterhead contact with wood blocks.
— If cutterhead makes even contact between
wood blocks, no adjustment is needed.
— If cutterhead only touches one wood block,
continue to Step 5.
Remove top assembly and side covers.
5.
6. On side of headstock to be adjusted, loosen
(2) set screws (see Figure 46).
Loosen (3) set screws in collar nut (see
7.
Figure 46), then thread collar nut down
1
leadscrew approximately
Rotate elevation adjustment nut (see Figure
8.
⁄8".
46) to raise or lower headstock until cutterhead
evenly touches wood blocks.
Thread collar nut tightly against bottom of hex
9.
nut (see Figure 46). Do not overtighten.
Tighten (3) set screws in collar nut (see
10.
Figure 46).
Tighten (2) set screws in side of headstock
11.
(see Figure 46).
x 2
Elevation
Adjustment
Nut
Hex Nut
Collar Nut
Leadscrew
x 3
Figure 46. Location of headstock adjustment
components. (Top assembly and side covers
removed for clarity.)
Install side covers and top assembly.
12.
13. Raise headstock slightly, then lower until it
just contacts wood blocks. Contact should
be even across blocks. If contact is not even,
repeat Steps 5–11 until cutterhead is parallel.
Plane a test piece to confirm even cut depth
14.
across width of workpiece.
-40-
Model G0939/G0940 (Mfd. Since 12/22)
Calibrating Depth
Stop Dial (G0940)
The settings on the depth stop dial indicator are
pre-set by the factory to match the corresponding measurements on the elevation scale. Over
time, the dial may need to be adjusted to maintain
accuracy. To ensure accurate depth of cut, always
follow the directions in Calibrating Headstock
Elevation Scale before performing the steps outlined below.
Tools Needed Qty
Open-Ended Wrench 14mm .............................. 1
Hex Wrench 4mm
To calibrate depth stop dial:
DISCONNECT MACHINE FROM POWER!
1.
2. Remove depth stop dial from
machine (see Figure 47).
.............................................. 1
4. Loosen hex nut (see Figure 48) and adjust
height stop bolt up or down to increase or
decrease depth of cut.
Height
Stop Bolt
Hex Nut
Figure 48. Components to adjust depth stop
height.
5. Tighten hex nut to secure setting.
6. Install side cover, top assembly, and dial,
and turn cutterhead elevation crank until
cutter assembly rests gently on depth stop.
Compare depth stop dial scale to cutterhead
elevation scale.
Elevation Scale
Depth
Stop Dial
Figure 47. Removing dial from machine body.
Remove top assembly and side covers.
3.
7. Repeat Steps 2–6 as needed until both
scales match.
Model G0939/G0940 (Mfd. Since 12/22)
-41-
Replacing Table
Height Pinion Gears
The table height pinion gears transfer movement
from the cutterhead elevation crank to the leadscrews that control cutterhead height. Replace
the gears if they wear down or break.
Tools Needed Qty
Hex Wrench 4mm .............................................. 1
To replace table height pinion gears:
DISCONNECT MACHINE FROM POWER!
1.
2. Gently tilt machine onto its back to expose
table height gears and shaft (see Figure 49).
Gears
Remove clamps securing shaft to base.
3.
4. Remove cap screw and flat washer securing
gear to shaft or leadscrew (see Figure 49).
Install new gear with fasteners removed in
5.
Step 4, ensure gear teeth mesh correctly,
and re-install shaft clamps.
6. Gently roll machine back onto its base, and
turn elevation crank to ensure gears turn
smoothly.
Shaft
Clamps
Figure 49. Table height pinion gears.
-42-
Model G0939/G0940 (Mfd. Since 12/22)
These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one
number and manufacture date of your
machine before calling. This information can be found on the main machine label.
machine
SECTION 8: WIRING
stated in this manual, and study this section carefully.
If there are differences between your machine and what is shown in this section, call Technical Support at
(570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated
wiring diagram may be available. Note: Please gather the serial
Wiring Safety Instructions
SHOCK HAZARD. Working on wiring that is con-
nected to a power source is extremely dangerous.
Touching electrified parts will result in personal
injury including but not limited to severe burns,
electrocution, or death. Disconnect the power
from the machine before servicing electrical components!
MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpredictable results, including serious injury or fire.
This includes the installation of unapproved aftermarket parts.
WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires disconnected or connected during any wiring task to
ensure tight connections.
CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this manual
when connecting your machine to a power source.
WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious personal injury, fire, or machine damage. If you notice
that any wires or components are damaged while
performing a wiring task, replace those wires or
components.
MOTOR WIRING. The motor wiring shown in
these diagrams is current at the time of printing
but may not match your machine. If you find this
to be the case, use the wiring diagram inside the
motor junction box.
CAPACITORS/INVERTERS. Some capacitors
and power inverters store an electrical charge for
up to 10 minutes after being disconnected from
the power source. To reduce the risk of being
shocked, wait at least this long before working on
capacitors.
EXPERIENCING DIFFICULTIES. If you are experiencing difficulties understanding the information
included in this section, contact our Technical
Support at (570) 546-9663.
The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.
Model G0939/G0940 (Mfd. Since 12/22)
-43-
Neutral
Wiring Diagram
Hot
Ground
PADDLE SWITCH BOX
PADDLE SWITCH COVER
Circuit
Breaker
Zhongzui 15A
125/250V
4
Paddle Switch
12A 125/250V
120 VAC
5-15 Plug
120V Motor
1
25
KEDU HY18
-44-
Ground
Ground
Figure 50. Switch and circuit breaker wiring.
Model G0939/G0940 (Mfd. Since 12/22)
115
2
SECTION 9: PARTS
G0939 Main
11
14
65
66
67
68
13
12
90
91
105
12
12
14
14
85
87
121
13
65
14
16
63
64
71
82
83
84V2
86
88
89
110
17
24
38
69
37
109
92
39
106
107
15
20V2
128
129
18
19
35
36
70
130
21
40
6
22
23
33
75
93
112
113
74
104
94
95
25
26
27
72
5
31
73
32
3
4
28
29
78
111
77
122
76
7
10
123
108
1
8
9
30V2
128
130
131
44
45
34
124
125
43
126
41
79
56
57
42
50
80
81
127
100V2
98
46
97
96
47
99
53
60
48
59
54
55
58
62
61
49
51
52
11
111
108
97
98
99
116
Model G0939/G0940 (Mfd. Since 12/22)
119
118
101
103
120
114
121
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
117
102
114
-45-
G0939 Main Parts List
REF PART # DES CRIPTION REF PART # DES CRIPTION
1 P0939001 CUTTERHEA D ELEVATIO N CRANK 51 P0939051 POLY-V BELT 135J
2 P0939002 CAP 52 P0939052 HEX NUT M16-1.5 LH
3 P0939003 CAP SCREW M5-.8 X 25 53 P0939053 KNOB BOLT M6-1 X 14, D18 KD
4 P0939004 FLAT WA SHER 5MM 54 P0939054 DUST CHUTE
5 P0939005 RETURN ROL LER 55 P0939055 DUST PO RT ADAPTER 4"
6 P0939006 ROLLER END CAP 56 P0939056 CAP SCREW M5-.8 X 10
7 P0939007 BUTTON HD CA P SCR M6-1 X 12 57 P0939057 FLAT WA SHER 5MM
8 P0939008 TOP COVER 58 P0939058 DUST SHRO UD
9 P0939009 HANDLE GRI P 59 P0939059 DUST PL ATE
10 P0939010 FLAT WASHE R 6MM 60 P0939060 TAP SCREW M4.2 X 13
11 P0939011 SIDE COVER 61 P0939061 HEX WRE NCH 4MM
12 P0939012 EXT RETAI NI NG RI NG 1 5MM 62 P0939062 MAGNET
13 P0939013 CHAI N 63 P0939063 COMPRESSION SPRING
14 P0939014 SPROCKET 8T 64 P0939064 BEARING BLOCK
15 P0939015 SHOULDER SCREW M5-.8 X 35, 6 X 25 65 P0939065 RETAI NER (LEFT)
16 P0939016 BUSHING 66 P0939066 FLA T WASHER 5MM
17 P0939017 GEARBOX 67 P0939067 LOCK WASHER 5MM
18 P0939018 PI NI ON 68 P0939068 CAP SCREW M5-.8 X 12
19 P0939019 BALL BEARING 6203ZZ 69 P0939069 OUTFEED ROLLER
20V2 P0939020V2 ELEVATION NUT (LEFT) V2.12.22 70 P0939070 RETAINE R (RI GHT)
21 P0939021 SET SCREW M5-.8 X 6 71 P0939071 INFEED ROLLER
22 P0939022 PHLP HD SCR M5-.8 X 10 72 P0939072 POWER CORD 14G 3W 72" 5-15P
23 P0939023 CABLE CLAMP 73 P0939073 MOTOR 2HP 120V 1-PH
24 P0939024 CHAI N COV ER 74 P0939074 PADDLE SWITCH KEDU HY18 12A 125/250V
25 P0939025 PHLP HD SCR M5-.8 X 8 75 P0939075 CIRCUIT BREAKER ZHONGZUI 15A 125/250V
26 P0939026 LOCK WASHER 5MM 76 P0939076 BRUSH HO USI NG
27 P0939027 EXT TOOTH WA SHER 5MM 77 P0939077 CARBON BRUSH (2-PK)
28 P0939028 CAP SCREW M5-.8 X 10 78 P0939078 B RUSH CAP
29 P0939029 BELT COVER 79 P0939079 SPACER
30V2 P0939030V2 ELEVATION NUT (RIGHT) V2.12.22 80 P0939080 FL AT WASHER 8MM
31 P0939031 PHLP HD SCR M4-.7 X 16 81 P0939081 CAP SCREW M8-1.25 X 25
32 P0939032 POINTER 82 P0939082 CAP SCREW M5-.8 X 16
33 P0939033 HEADSTOCK 83 P0939083 FLAT WASHER 5MM
34 P0939034 MOTOR PIVOT ROD 84V2 P0939084V2 LEADSCREW (LEFT) V2.12.22
35 P0939035 ROD CLAMP PLATE 85 P0939085 FLAT WASHER 10MM
36 P0939036 SET SCREW M5-.8 X 6 86 P0939086 BALL BEARING 6000ZZ
37 P0939037 LOCK WASHER 5MM 87 P0939087 BEARING CLAMP PLATE
38 P0939038 BUTTON HD CAP S CR M5-.8 X 10 88 P0939088 B UTTON HD CAP SCR M5-. 8 X 10
39 P0939039 DEPTH-OF- CUT GAUGE 89 P0939089 FLAT WASHER 10MM
40 P0939040 PHLP HD SCR M4-.7 X 12 90 P0939090 CO LUMN
41 P0939041 CUTTERHEAD 13 " 3- KNI FE 91 P0939091 CAP SCREW M10-1.5 X 35
42 P0939042 KEY 5 X 5 X 12 RE 92 P0939092 GUIDE RAI L
43 P0939043 KNIVES 13" X 12MM X 1/16" (3-PC) 93 P0939093 TABLE
44 P0939044 KNI FE CL AMP 94 P0939094 CAP SCREW M5-.8 X 8
45 P0939045 BUTTON HD CAP S CR M6-1 X 16 95 P0939095 FL AT WASHER 5MM
46 P0939046 BALL BEARING 6203ZZ 96 P0939096 OUTFEED EXTENSION TABLE
47 P0939047 BEARING COVER 97 P0939097 FL AT WASHER 5MM
48 P0939048 CAP SCREW M5-.8 X 12 98 P0939098 LOCK WASHER 5MM
49 P0939049 CUTTERHEAD PUL LEY 99 P0939099 CAP SCREW M5-.8 X 8
50 P0939050 MOTOR PULLEY 100V2 P0939100V2 LEADSCREW (RIGHT) V2.12.22
-46-
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
Model G0939/G0940 (Mfd. Since 12/22)
REF P ART # DESCRIPTI ON REF PART # DE SCRIPTIO N
Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here
(8 00) 523-4777
www.grizzly.com
G0939 Main Parts List (Cont.)
101 P0939101 FLAT WASHER 10MM 117 P0939117 FLAT WA SHER 5MM
102 P0939102 BALL BEARING 6000ZZ 118 P0939118 SUPPORT CLAMP
103 P0939103 BEARING CLAMP PLATE 119 P0939119 CAP SCREW M5-.8 X 12
104 P0939104 BASE 120 P0939120 EXT RE TAI NING RI NG 10MM
105 P0939105 INFEED EXTENSION TABLE 121 P0939121 FLAT WASHER 10MM
106 P0939106 BUSHI NG 122 P0939122 P USH ROD
107 P0939107 LOCK WASHER 4MM 123 P0939123 COMPRESSION SPRING
108 P0939108 TABLE SUPPORT ARM 124 P0939124 CUTTERHEA D LOCK LATCH
109 P0939109 LOCK WASHER 6MM 125 P0939125 SPACER
110 P0939110 CAP SCREW M6-1 X 20 126 P0939126 CAP SCREW M5-.8 X 12
111 P0939111 EXTENSION TABLE 127 P0939127 CUTTERHEAD ELEVATION SCALE
112 P0939112 HEX BOLT M6-1 X 20 128 P0939128 HEX NUT M20-1.5
113 P0939113 HEX NUT M6 -1 129 P0939129 COLL AR NUT W/ SET SCREWS (LEFT)
114 P0939114 PINION GEAR 130 P0939130 SET SCREW M5-.8 X 6
115 P0939115 CAP SCREW M5-.8 X 12 131 P0939131 COLLAR NUT W/SET SCREWS ( RIGHT)
116 P0939116 SHAFT
are available for purchase. Call
or visit our online parts store at
to check for availability.
Model G0939/G0940 (Mfd. Since 12/22)
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
-47-
G0940 Main
14
14
54
20
15
16
15
17
16
19
44
51
18
21
23V2
22
38
52
53
6
7
9
140
141
25V2
39
142
40
50
24
36
45
37
12
88
113
94
95
107
96
92
108
93
89
91
90
109
97
138
110
111
43
26
27
140
146
1
2
3
28V2
29
30
142
137
10
143
144
145
130
4
103
131
31V2
104
114
98
99
100
101
102V2
105
129
106
5
8
11
12
13
46
47
48
49
33
34
35
42
59V2
-48-
57
56V2
55
65
66
83
85
84
86
87
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
63
64
82
81
79
78
80
118
68
62
58
67
77
119
69
70
71
72
73
74
75
76
133
120
60
121
61
132
122
124
136
123
125
135
134
84
139
41
85
86
115
116
87
Model G0939/G0940 (Mfd. Since 12/22)
112
117
82
81
126
127
128
G0940 Main Parts List
REF PART # DE SCRIP TION REF PART # DE SCRIP TION
1 P0940001 CAP 52 P0940052 CAP SCREW M5-.8 X 16
2 P0940002 CAP SCREW M5-.8 X 25 53 P0940053 FLAT WASHER 5MM
3 P0940003 FLAT WASHE R 5MM 54 P0940054 SIDE COVER (LEFT)
4 P0940004 CUTTERHEAD EL EVATION CRANK 55 P0940055 CO LUMN
5 P0940005 TOP COVER 56V2 P0940056V2 LEADSCREW (LEFT) V2.12.22
6 P0940006 BUTTON HD CAP S CR M6-1 X 12 57 P0940057 TABLE CLAMP PLATE (LEFT)
7 P0940007 FLAT WASHE R 6MM 58 P0940058 GRANITE TABLE
8 P0940008 RETURN ROLLE R 59V2 P0940059V2 LEADSCREW (RIGHT) V2.12.22
9 P0940009 ROLLER END CAP 60 P0940060 BUTTON HD CAP SCR M5- .8 X 10
10 P0940010 HANDLE G RIP 61 P0940061 TABLE CLAMP PLATE (RIGHT)
11 P0940011 PHLP HD SCR M5-.8 X 10 62 P0940062 BASE
12 P0940012 FLAT WAS HER 5MM 63 P0940063 HEX BOLT M6-1 X 20
13 P0940013 CABLE CLAMP 64 P0940064 HEX NUT M6-1
14 P0940014 EXT RETA INING RING 15MM 65 P0940065 FLAT WASHER 10MM
15 P0940015 CHAIN 66 P0940066 CAP SCREW M10-1.5 X 40
16 P0940016 SPROCKET 8T 67 P0940067 STEEL BALL 8MM
17 P0940017 BUSHI NG 68 P0940068 COMPRESSION SPRING
18 P0940018 SHOULDER SCREW M5-.8 X 35, 6 X 25 69 P0940069 FLAT WASHER 16MM
19 P0940019 GEARBOX 70 P0940070 BALL BEARING 6000ZZ
20 P0940020 CHAIN CO VER 71 P0940071 BEARING CLAMP PLATE
21 P0940021 PINI ON 72 P0940072 BUTTON HD CAP SCR M5- .8 X 10
22 P0940022 BALL BEARING 6203ZZ 73 P0940073 FLAT WASHER 10MM
23V2 P0940023V2 ELEVATION NUT (LEFT) V2.12.22 74 P0940074 PINION GEAR
24 P0940024 SET SCREW M5-.8 X 6 75 P0940075 FLAT WASHER 5 MM
25V2 P0940025V2 HEADSTOCK V2.12.22 76 P0940076 CAP SCREW M5-.8 X 12
26 P0940026 CAP SCREW M5-.8 X 10 77 P0940077 EXT RETAI NI NG RI NG 10MM
27 P0940027 BELT COVER 78 P0940078 CAP SCREW M5-.8 X 12
28V2 P0940028V2 ELEVATION NUT (RIGHT) V2.12.22 79 P0940079 SUPPORT CLAMP
29 P0940029 PUSH ROD 80 P0940080 SHAFT
30 P0940030 COMPRESSION SPRING 81 P0940081 CAP SCREW M5-.8 X 8
31V2 P0940031V2 CAP SCREW M6-1 X 30 V2.12.22 82 P0940082 FLAT WASHER 5MM
33 P0940033 PHLP HD SCR M5-.8 X 10 83 P0940083 EXTENSION TABLE
34 P0940034 LOCK WASHER 5MM 84 P0940084 CAP SCREW M6-1 X 16
35 P0940035 EXT TOO TH WASHER 5MM 85 P0940085 BUSHING
36 P0940036 DEPTH-O F-CUT GAUGE 86 P0940086 LOCK WASHER 6MM
37 P0940037 PHLP HD SCR M4-.7 X 12 87 P0940087 TABLE SUPPORT ARM
38 P0940038 BUTTON HD CAP SCR M5-.8 X 10 88 P0940088 KNOB BOLT M6-1 X 14, D18 KD
39 P0940039 SET SCREW M5-.8 X 6 89 P0940089 DUST CHUTE
40 P0940040 ROD CLAMP PLATE 90 P0940090 DUS T PORT A DAPTER 4"
41 P0940041 MOTOR PIVOT ROD 91 P0940091 GASKET
42 P0940042 PHLP HD SCR M4-.7 X 16 92 P0940092 CAP SCREW M5-.8 X 10
43 P0940043 POINTER 93 P0940093 DUST SHRO UD
44 P0940044 BEARING BLOCK COMPRESSION SPRING (LH) 94 P0940094 DUST PLATE
45 P0940045 OUTFEED ROLLER 95 P0940095 TAP SCREW M4.2 X 13
46 P0940046 BEARING BLOCK COMPRESSION SPRING (RH) 96 P0940096 MAGNET
47 P0940047 BEARING BLOCK 97 P0940097 HEX WRE NCH 4MM
48 P0940048 RETAI NER (RIGHT) 98 P0940098 CAP SCREW M5-.8 X 16
49 P0940049 CAP SCREW M5-.8 X 12 99 P0940099 MOUNTI NG ARM
50 P0940050 INFEED ROLLER 100 P0940100 SUPPORT BLOCK
51 P0940051 RETAI NER (LEFT) 101 P0940101 HEX NUT M8-1.2 5
Model G0939/G0940 (Mfd. Since 12/22)
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
-49-
G0940 Parts List (Cont.)
REF PART # DES CRIPTION REF PART # DESCRIPTION
102V2 P0940102V2 DEPTH STOP ROD 60MM V2.12.22 125 P0940125 GEAR SHAFT
103 P0940103 CUTTE RHEAD LOCK LATCH 126 P0940126 S IDE COVER (RIGHT)
104 P0940104 SPACER 127 P0940127 DEPTH STOP ADJUSTING KNOB
105 P0940105 CAP SCREW M5-.8 X 12 128 P0940128 CAP SCREW M5-.8 X 12
106 P0940106 KEY 5 X 5 X 12 RE 129 P0940129 CUTTERHEAD 13" HELICAL
107 P0940107 BALL BEARING 6203ZZ 130 P0940130 CARBIDE INSERT 15 X 15 X 2.5MM (10-PK)
108 P0940108 BEARING COVER 131 P0940131 FLAT HD TORX T-20 M5-.8 X 12
109 P0940109 CAP SCREW M5-.8 X 12 132 P0940132 PADDLE SWITCH KEDU HY18 12A 125/250V
110 P0940110 CUTTE RHEAD PULL EY 133 P0940133 CIRCUIT BREAKER ZHONGZUI 15A 125/250V
111 P0940111 POLY-V BELT 135J 134 P0940134 BRUSH HOUSING
112 P0940112 HEX NUT M16-1.5 LH 135 P0940135 CARBON BRUSH (2-PK)
113 P0940113 MOTOR PULLEY 136 P0940136 B RUSH CAP
114 P0940114 MOTOR 2HP 120V 1-PH 137 P0940137 POWER CORD 14G 3W 72" 5-15P
115 P0940115 SPACER 138 P0940138 T-HA NDLE TORX WRENCH T-20
116 P0940116 FL AT WASHER 8 MM 139 P0940139 CUTTERHEAD ELEVATION SCALE
117 P0940117 CAP SCREW M8-1.25 X 25 140 P0940140 HE X NUT M20-1.5
118 P0940118 CAP SCREW M5-.8 X 16 141 P0940141 CO LLAR NUT W/SET S CREWS (LE FT)
119 P0940119 CAP SCREW M5-.8 X 12 142 P0940142 SET SCREW M5-.8 X 6
120 P0940120 FL AT WASHER 5 MM 143 P0940143 FL AT WASHER 6MM
121 P0940121 GEAR SUPPORT 144 P0940144 LOCK WASHER 6MM
122 P0940122 FL AT WASHER 8 MM 145 P0940145 HE X NUT M6-1
123 P0940123 GEAR 146 P0940146 COLLAR NUT W/SET SCREWS ( RIGHT)
124 P0940124 DEPTH STOP BLOCK
-50-
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
Model G0939/G0940 (Mfd. Since 12/22)
Labels & Cosmetics
201
203
REF PART # DESCRIP TION REF P ART # DE SCRIPTIO N
211
INJURY/SHOCK
HAZARD!
Disconnect power
before adjustments,
maintenance, or
service.
210
209
213
INJURY HAZARD!
To reduce risk of shortand long-term injury,
wear safety glasses,
hearing protection, and
a respirator when using
this machine.
212
202
U
p
o
D
208
WARNING!
To reduce risk of death
or serious injury, read
manual BEFORE using
machine.
To get a new manual,
call (800) 523-4777 or
go to www.grizzly.com.
w
MODEL G0939
n
205
1/8"
3.175mm
1/4"
6.35mm
1/2"
12.7mm
3/4"
19.05mm
1"
25.4mm
1
1 "
4
/
31.75mm
Motor: 2 HP, 120V, 60 Hz, 15A
Cutterhead: 2" Dia., 3-Knife
Knife Size: 13" x 12mm x 1/16"
Max. Cut Depth Full Width: 1/32"
Max. Cut Depth 6" Width: 3/32"
Cutterhead Speed: 8500 RPM
Motor: 2 HP, 120V, 60 Hz, 15A
Cutterhead: 2 Spirals, 30 Inserts
Insert Size: 15 x 15 x 2.5mm
Max. Cut Depth Full Width: 1/32"
Max. Cut Depth 6" Width: 3/32"
Cutterhead Speed: 8500 RPM
204
To reduce the risk of serious injury when using this machine:
1. Read and understand owner’s manual before operating.
2. Always wear approved safety glasses, respirator, and hearing protection.
3. Disconnect power before doing any service or maintenance on machine.
4. Only plug power cord into a grounded outlet.
5. Do not wear loose clothing, gloves, jewelry, or other items that can get
entangled. Tie back long hair and roll up sleeves.
6. Do not plane two boards of varying thickness at the same time.
7. Never plane material smaller than 6" long, 3/4" wide, or 1/8" thick.
8. Keep fingers clear of pinch point between stock and table.
9. Stand clear of board ends during cutting operation.
10. Inserts/knives are sharp! Use extreme caution when servicing.
11. Never reach into cutting area while machine is running.
12. Do not expose to rain or use in wet locations.
13. Prevent unauthorized use by children or untrained users.
13" 2 HP BENCHTOP PLANER
Specifications
Max. Stock Thickness: 6"
Max. Cutting Width: 13"
Min. Stock Thickness: 1/8"
Min. Stock Length: 6"
Feed Rate: 25 FPM
Weight: 67 lbs.
Date
MODEL G0940
13" 2 HP BENCHTOP PLANER
w/HELICAL CUTTERHEAD
Specifications
Max. Stock Thickness: 6"
Max. Cutting Width: 13"
Min. Stock Thickness: 1/8"
Min. Stock Length: 6"
Feed Rate: 25 FPM
Weight: 78 lbs.
Date
WARNING!
1 "
31.75mm
1/8"
3.175mm
1
4
/
25.4mm
6.35mm
CUTTERHEAD DEPTH STOP DIAL
The depth stop dial allows the operator to pre-set
the desired finished workpiece thickness. This is
1
"
indicated by the white dot on the depth stop dial
pointing to the thickness scale.
3/4"
19.05mm
To adjust depth stop dial:
1/2"
1. Raise the cutterhead assembly above the
12.7mm
workpiece.
1/4"
2. Rotate the dial to the preferred depth.
3. Lower the cutterhead assembly until it gently
rests on the depth stop, then proceed with cut.
S/N
S/N
Mfd. for Grizzly in China
Mfd. for Grizzly in China
207
INJURY HAZARD!
To reduce the risk of serious personal
injury, do not remove this cover while the
machine is running or connected to power.
Always disconnect power before servicing.
206
G0940
G0939
201 P0939201 GRIZZLY LOGO LABEL 208 P0939208 READ MANUAL LABEL
202 P0939202 ELEVATION LABEL 209 P0939209 EYE, EARS, LUNGS LABEL
203 P0939203 MACHINE ID LABEL (G0939) 210 P0939210 MODEL NUMBER LABEL (G0939)
203 P0940203 MACHINE ID LABEL (G0940) 210 P0940210 MODEL NUMBER LABEL (G0940)
204 P0939204 MACHINE WARNINGS LABEL 211 P0939211 DISCONNECT POWER LABEL
205 P0940205 DEPTH STOP DIAL LABEL (G0940) 212 P0939212 TOUCH-UP PAINT, GRIZZL Y GREEN
206 P0939206 ELECTRICITY LABEL 213 P0939213 TOUCH-UP PA INT, GRIZZLY BLACK
207 P0939207 I NJURY HAZARD LABEL
Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.
Model G0939/G0940 (Mfd. Since 12/22)
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
-51-
WARRANTY & RETURNS
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.
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.
In the event you need to use 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.
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.
To
you can
applicable information for
take advantage of this warranty, you must register it at https://www.grizzly.com/forms/warranty, or
scan the QR code below to be automatically directed to our warranty registration page. Enter all
the product.
WARRANTY
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