Grizzly G0787 User Manual

MODEL G0787

4" x 36" HORIZONTAL/VERTICAL

BELT SANDER w/6" DISC

OWNER'S MANUAL

(For models manufactured since 09/14)

COPYRIGHT © FEBRUARY, 2015 BY GRIZZLY INDUSTRIAL, INC.

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

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

#WKBB17229 PRINTED IN CHINA

V1. 0 2.1 5

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

Manual Accuracy ........................................................................................................................ 2

Contact Info ................................................................................................................................ 2

Controls & Components ............................................................................................................. 3

Machine Data Sheet ................................................................................................................... 4

SECTION 1: SAFETY ....................................................................................................................... 6

Safety Instructions for Machinery ............................................................................................... 6

Additional Safety for Disc/Belt Sanders ..................................................................................... 8

SECTION 2: POWER SUPPLY ........................................................................................................ 9

SECTION 3: SETUP ....................................................................................................................... 11

Unpacking ................................................................................................................................ 11

Needed for Setup ..................................................................................................................... 11

Inventory ................................................................................................................................... 11

Site Considerations .................................................................................................................. 12

Bench Mounting ....................................................................................................................... 12

Assembly .................................................................................................................................. 13

Dust Collection ......................................................................................................................... 14

Test Run ................................................................................................................................... 15

SECTION 4: OPERATIONS ........................................................................................................... 16

Disabling Switch ....................................................................................................................... 16

Disc Sanding ............................................................................................................................ 17

Belt Sanding ............................................................................................................................. 18

Changing/Replacing Sandpaper Disc ...................................................................................... 21

Changing/Replacing Sanding Belt ........................................................................................... 22

Adjusting Belt Tracking ............................................................................................................ 22

SECTION 5: ACCESSORIES ......................................................................................................... 23

SECTION 6: MAINTENANCE......................................................................................................... 25

Schedule .................................................................................................................................. 25

Cleaning & Protecting .............................................................................................................. 25

Cleaning Sanding Belt/Disc ...................................................................................................... 25

SECTION 7: SERVICE ................................................................................................................... 26

Troubleshooting ........................................................................................................................ 26

Aligning Work Table ................................................................................................................. 28

Calibrating Miter Gauge ........................................................................................................... 28

Replacing Drive Belt ................................................................................................................. 29

SECTION 8: WIRING ...................................................................................................................... 30

Wiring Safety Instructions ........................................................................................................ 30

Wiring Diagram......................................................................................................................... 31

SECTION 9: PARTS ....................................................................................................................... 32

Main Breakdown....................................................................................................................... 32

Labels & Cosmetics ................................................................................................................. 34

WARRANTY & RETURNS ............................................................................................................. 37

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

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

from the

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: [e-mail]

Manual Accuracy

made every effort to be exact with the

sometimes the machine

,

www.grizzly.com.

Manufacture Date and Serial Number

manual updates for free

e post

Contact Info

and manufacture date

Grizzly Technical Support

1815 W. Battlefield

.

Springfield, MO 65807
Phone: [phone]

Email: [e-mail]

Grizzly Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Manufacture Date

Serial Number

-2-

Model G0787 (Mfd. Since 09/14)

Controls &

To reduce your risk of
serious injury, read this
entire manual BEFORE

Components

using machine.

H

G

I

L

K

J

Refer to Figures 1–2 and the following descrip­tions to become familiar with the basic controls of
this machine.

A

F

Figure 1. Sanding belt and controls, sanding

disc, and ON/OFF switch.

A. Belt Tensioning Lever: When pressed in,

provides tension to sanding belt during use.
When pulled out, releases tension for chang­ing/replacing belt.

B C

D

E

Figure 2. Work table and miter gauge controls,

sanding bed, and dust port.

G. Angle Scale: Indicates angle of work table

relative to sanding disc from 90 – 45°.

H. Sanding Bed: The surface around which the

sanding belt rotates; tilts from 0 – 90°.

I. Miter Gauge: Used for miter sanding.

Adjustable from 60° left – 60° right.

J. Work Table: Supports workpiece during

angle, miter, and compound miter sanding.
T-slot functions as a guide for miter gauge.

K. Angle Adjustment Knob: Tightens to secure

work table at desired angle.

1

L. 2

⁄2" Dust Port: Connects to dust collection

system (not included).

B. Backstop: Prevents workpiece from being

thrown by rotation of sanding belt.

C. Sanding Belt: Used for sanding with grain

along length of workpiece, and for sanding
inside curves.

D. Tracking Control Knob: Used to adjust

alignment of sanding belt to sanding bed.

E. ON/OFF Switch: Turns motor ON and OFF.

Remove yellow tab to lock in OFF position.

F. Sanding Disc: Used for performing angle

and miter sanding operations on work table.

Model G0787 (Mfd. Since 09/14)

-3-

Machine Data Sheet

MACHINE DATA

SHEET

Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]

MODEL G0787 4" X 36" HORIZONTAL/VERTICAL BELT

SANDER WITH 6" DISC

Product Dimensions:

Weight................................................................................................................................................................ 38 lbs.

Width (side-to-side) x Depth (front-to-back) x Height............................................................... 17-1/2 x 14-1/2 x 24 in.

Footprint (Length x Width).............................................................................................................................. 6 x 15 in.

Shipping Dimensions:

Type..................................................................................................................................................... Cardboard Box

Content........................................................................................................................................................... Machine

Weight................................................................................................................................................................ 41 lbs.

Length x Width x Height....................................................................................................................... 23 x 12 x 13 in.

Must Ship Upright................................................................................................................................................... Yes

Electrical:

Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz

Full-Load Current Rating....................................................................................................................................... 4.3A

Minimum Circuit Size.............................................................................................................................................. 15A

Connection Type....................................................................................................................................... Cord & Plug

Power Cord Included.............................................................................................................................................. Yes

Power Cord Length................................................................................................................................................. 6 ft.

Power Cord Gauge......................................................................................................................................... 18 AWG

Plug Included.......................................................................................................................................................... Yes

Included Plug Type................................................................................................................................................ 5-15

Switch Type.................................................................................................. Toggle Safety Switch w/Removable Key

Motors:

Main

Type............................................................................................................................ Capacitor-Start Induction

Horsepower............................................................................................................................................. 1/2 HP

Phase............................................................................................................................................ Single-Phase

Amps........................................................................................................................................................... 4.3A

Speed................................................................................................................................................ 3600 RPM

Bearings.......................................................................................................................................... Ball Bearing

Main Specifications:

Belt Sander Info

Sanding Belt Width...................................................................................................................................... 4 in.

Sanding Belt Length.................................................................................................................................. 36 in.

Sanding Belt Speed........................................................................................................................... 1900 FPM

Sanding Belt Tilt..................................................................................................................................... 90 deg.

Max Height of Belt in Vertical Position................................................................................................. 24-1/2 in.

Belt Tension Release Type............................................................................................... Quick-Release Lever

Platen Type................................................................................................................................................ Steel

Platen Length............................................................................................................................................. 12 in.

Platen Width.......................................................................................................................................... 4-7/8 in.

-4-

Model G0787 (Mfd. Since 09/14)

Disc Sander Info

Disc Diameter.............................................................................................................................................. 6 in.

Disc Speed........................................................................................................................................ 3600 RPM

Disc Sandpaper Backing Type.................................................................................................................... PSA

Table Length.......................................................................................................................................... 6-1/4 in.

Table Width.................................................................................................................................................. 9 in.

Table Tilt............................................................................................................................ Left 0, Right 45 deg.

Table-to-Floor Height............................................................................................................................. 4-3/4 in.

Construction Materials

Base..................................................................................................................................................... Cast Iron

Table.................................................................................................................................... Die-Cast Aluminum

Frame................................................................................................................................................... Cast Iron

Disc..................................................................................................................................................... Aluminum

Miter Gauge............................................................................................................................. Plastic and Steel

Paint Type/Finish................................................................................................................................. Urethane

Other Related Info

Miter Gauge Slot Width............................................................................................................................. 5/8 in.

Miter Gauge Slot Height........................................................................................................................... 1/4 in.

Number of Dust Ports....................................................................................................................................... 1

Dust Port Size........................................................................................................................................ 2-1/2 in.

Other Specifications:

Country of Origin ............................................................................................................................................... China

Warranty ........................................................................................................................................................... 1 Year

Approximate Assembly & Setup Time ........................................................................................................ 30 Minutes

Serial Number Location .................................................................................................................................. ID Label

ISO 9001 Factory .................................................................................................................................................. Yes

Certified by a Nationally Recognized Testing Laboratory (NRTL) ......................................................................... Yes

Features:

Built-In dust port
Fast-tracking adjustment knob
Quick-release belt lever
Adjustable miter gauge

Model G0787 (Mfd. Since 09/14)

-5-

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.

This symbol is used to alert the user to useful information about

NOTICE

proper operation of the machine.

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 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-

-6-

Model G0787 (Mfd. Since 09/14)

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 [phone].

Model G0787 (Mfd. Since 09/14)

-7-

Additional Safety for Disc/Belt Sanders

Serious injury can occur from fingers or hands contacting sandpaper, or from fingers, clothes,
or hair getting entangled in sanding disc or belt. Workpieces thrown by sander can strike nearby
operators. Long-term respiratory damage can occur from using sander without proper use of
a respirator and an adequate dust collection system. To minimize risk of getting hurt or killed,
anyone operating machine MUST completely heed hazards and warnings below.

DISC DIRECTION. Only sand on downward-mov-

ing left side of sanding disc. Sanding on upward­moving right side of sanding disc forces operator
to rely only on hands (rather than table) for sup­port, which increases risk of workpiece “kick-out”
and impact/abrasion injuries.

HAND PLACEMENT. Rotating sandpaper can
remove a large amount of flesh in a few seconds.
Always keep hands away from sandpaper during
operation. Never touch moving sandpaper on pur­pose. Use a brush to clean table of sawdust and
chips.

FEEDING WORKPIECE. Forcefully jamming work­piece into sanding surface could cause workpiece
to be aggressively grabbed and pull your hands
into sanding surface. Firmly grasp workpiece in
both hands and ease it into sandpaper using light
pressure.

MINIMUM STOCK DIMENSION. Small workpiec­es can be aggressively pulled from your hands.
Always use a jig or other holding device when
sanding small workpieces, and keep hands and
fingers at least 2” away from sanding surface.

AVOIDING ENTANGLEMENT. Becoming entan­gled in moving parts of this machine can cause
pinching and crushing injuries. To avoid these
hazards, DO NOT wear loose clothing, gloves, or
jewelry, and tie back long hair. Keep all guards in
place and secure.

IN-RUNNING NIP POINTS. The gap between
moving sandpaper and fixed table/support creates
a pinch point for fingers or workpieces; the larger
this gap is, the greater risk of fingers or workpieces
getting caught in it. Minimize this risk by adjusting
table no more than

1

⁄16 ” away from sandpaper.

WORKPIECE SUPPORT. Workpiece kickback
can occur with violent force if workpiece is not
properly supported during operation. Always sand
with workpiece firmly against table or another sup­port device.

WORKPIECE INSPECTION. Nails, staples, knots,
or other imperfections in workpiece can be dis­lodged and thrown from sander at high rate of
speed into operator or bystanders, or cause dam­age to sandpaper or sander. Never try to sand
stock that has embedded foreign objects or ques­tionable imperfections.

SANDPAPER CONDITION. Worn or damaged
sandpaper not only produces poor sanding results,
but could fly apart, aggressively grab workpiece,
and throw debris at the operator. Always inspect
sandpaper before operation and replace if worn or
damaged.

WORKPIECE INTEGRITY. Only sand solid work­pieces that can withstand power sanding forces.
Make sure shape of workpiece is properly support­ed on table; avoid sanding workpieces without flat
bottom surfaces unless some type of jig is used to
maintain support and control when sanding force
is applied.

SANDING DUST. Sanding creates large amounts
of dust and flying chips that can lead to eye injury
or respiratory illness. Reduce risk of these hazards
by wearing approved eye and respiratory protec­tion when using sander.

DUST COLLECTION. Never operate without ade-
quate dust collection system in place and running.
Proper dust collection reduces dust in work area,
which decreases risk of long-term respiratory dam­age, but it is not a substitute for using a respirator.

-8-

Model G0787 (Mfd. Since 09/14)

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.

Electrocution, fire, or
equipment damage may
occur if machine is not
correctly grounded and
connected to the power

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:

Availability

Serious injury could occur if you connect
machine to power before completing setup
process. DO NOT connect to power until
instructed later in this manual.

120V Circuit Requirements

Nominal Voltage .................... 110V, 115V, 120V

Cycle ..........................................................60 Hz

Phase ........................................... Single-Phase

Power Supply Circuit ......................... 15 Amps

supply.

Full-Load Current Rating

Full-Load Current Rating at 120V ....4.3 Amps

Model G0787 (Mfd. Since 09/14)

property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.

-9-

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
electrician install the proper outlet with a

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 Prong

5-15 PLUG

Extension Cords

If you must use an extension

Neutral Hot

Figure 3. 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

verified ground.

-10 -

Minimum Gauge Size ...........................16 AWG

Maximum Length (Shorter is Better).......50 ft.

Model G0787 (Mfd. Since 09/14)

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

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.

Keep children and pets away
from plastic bags or packing
materials shipped with this

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 at [phone].

Save all packaging materials until

SUFFOCATION HAZARD!

machine. Discard immediately.

Inventory

Box 1 (Figure 4) Qty

A. Backstop ..................................................... 1

B. Disc Cover .................................................. 1

C. Miter Gauge ................................................ 1

D. Sanding Disc .............................................. 1

E. Work Table ................................................. 1

F. Hardware (Not Shown):

—Fender Washer 6mm .............................. 1

—Cap Screws M8-1.25 x 16....................... 2

—Flat Washers 8mm ................................. 2

—Tap Screws M4 x 10 ............................... 2

—External Tooth Washers 4mm ................ 2

Needed for Setup

The following are needed to complete the setup
process, but are not included with your machine.

Description Qty

• Safety Glasses .................................... 1 Pair

• Screwdriver Phillips #2 ............................... 1

• Hex Wrench 6mm ....................................... 1

• Screwdriver Flat Head #2 ........................... 1

• Dust Collection System .............................. 1

• Dust Hose 2

• Hose Clamps 2

Model G0787 (Mfd. Since 09/14)

1

⁄2 " ........................................... 1

1

⁄2 " ...................................... 2

A B

E

Figure 4. Model G0787 inventory.

C

D

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.

-11-

Site Considerations

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
machine.

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.

Bench Mounting

Workbench Load

Placement Location

2½" Dust Port

14½"

Number of Mounting Holes ............................ 4

Diameter of Mounting Hardware Needed ..

Hex
Bolt

Flat Washer

Machine Base

1

⁄2"

Figure 5. Minimum working clearances.

17½"

Children and visitors may be
seriously injured if unsuper­vised around this machine.
Lock entrances to the shop

power connection to prevent
unsupervised use.

Workbench

Flat Washer

Lock Washer

Hex Nut

Figure 6. "Through Mount" setup.

Lag Screw

Flat Washer

Machine Base

-12-

Workbench

Figure 7. "Direct Mount" setup.

Model G0787 (Mfd. Since 09/14)

Assembly

4. Insert work table index pin into upper hole on

sander base (see Figure 9).

The Model G0787 ships with the sanding belt
pre-installed.

1. Attach sandpaper disc to aluminum disc (see
Attaching Sandpaper Disc on Page 21).

2. Mount disc cover to holes in sander body

near bottom of aluminum disc, using (2) M4 x
10 tap screws, as shown in Figure 8.

x 2

5. Insert threaded end of table lock knob through
slot in work table and into threaded hole in
sander body.

6. Set work table at desired angle and tighten
table lock knob.

7. Insert (2) M8-1.25 x 16 cap screws with (2)
8mm flat washers through slot in backstop
and thread into mounting holes in sander
body (see Figure 10).

Note: Do not fully tighten cap screws yet.

Backstop

x 2

Disc Cover

Figure 8. Installing disc cover.

3. Install 6mm fender washer on table lock

knob, as shown in Figure 9.

Upper Hole

Threaded Hole

Index Pin

Table Lock

Knob & Washer

Figure 9. Installing work table.

Figure 10. Backstop mounting location.

8. Use a square to position backstop per-

pendicular to sanding belt, with a gap of
approximately
then tighten cap screws from Step 1 (see
Figure 11).

1

⁄8" between backstop and belt,

1

⁄8" Gap

Model G0787 (Mfd. Since 09/14)

Figure 11. Squaring backstop.

-13-

Dust Collection

This machine creates substantial amounts
of 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: 250 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.

To connect dust collection hose:

1

1. Fit 2

Figure 12. Dust hose attached to dust port.

2. Tug hose to make sure it does not come off.

Note: A tight fit is necessary for proper per-

⁄2" dust hose over dust port, as shown
in Figure 12, and secure in place with hose
clamp.

formance.

-14-

Model G0787 (Mfd. Since 09/14)

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

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:

1. Clear all setup tools away from machine.

2. Connect machine to power supply.

3. Turn machine ON, verify motor operation,

and then turn machine OFF.

Motor should run smoothly and without

unusual problems or noises.

4. Remove key from toggle switch, as shown
below.

may result in malfunction or unexpect-

death, or machine/property damage.

Model G0787 (Mfd. Since 09/14)

Figure 13. Removing key from toggle switch.

5. Try to start machine with switch. The machine

should not start.

— If the machine does not start, the toggle

switch is working correctly. Congratulations!
The Test Run is complete.

— If the machine does start (with the toggle

switch removed), immediately disconnect
power to the machine. The toggle switch
safety feature is not working correctly. This
safety feature must work properly before
proceeding with regular operations. Call
Tech Support for help.

-15-

SECTION 4: OPERATIONS

The switch can be disabled by removing the key,
as shown below. Disabling the switch in this man­ner can prevent unauthorized operation of the
machine, which is important if it is not kept inside
an access-restricted building or in a location
where children may be present.

IMPORTANT:

its function. It is not a substitute for disconnecting
machine from power when adjusting or servicing.

Children or untrained people can be

. This

To help prevent unsupervised operation,

switch before leaving

To reduce your risk of
serious injury, read this
entire manual BEFORE

To reduce risk of eye injury from flying

Keep hair, clothing, and

ing parts at all times.
Entanglement can result
in death, amputation, or

Disabling Switch

using machine.

chips or lung damage from breathing dust,
always wear safety glasses and a respirator
when operating this machine.

jewelry away from mov-

severe crushing injuries!

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.

Disabling the switch only restricts

Figure 14. Disabling switch by removing key.

seriously injured by this machine
risk increases with unsupervised operation.

always disable
machine unattended. Make sure to place
key in a well-hidden or secure location!

-16 -

Model G0787 (Mfd. Since 09/14)

Disc Sanding

Adjusting Miter Gauge Angle

1. Place miter gauge in slot in work table, then

loosen miter gauge lock knob shown in

Figure 16.

Only sand workpiece on side of sanding
disc that is rotating down toward work table.
This will keep workpiece from flying out of
your hands from rotational force of disc.

Setting Work Table Angle

Set the work table angle relative to the sanding
disc. The angle can be set using the angle scale
on the sander body, or for greater accuracy, a pro­tractor or machinist's square can be used.

To set work table angle:

1. DISCONNECT MACHINE FROM POWER!

2. Loosen angle adjustment knob, and position

work table so pointer on end of work table
support aligns with desired angle on angle
scale (see Figure 15).

— For greater accuracy, use a protractor

or machinist's square.

Angle

Adjustment

Knob

Square

Fence

Scale

Figure 16. Setting miter gauge angle.

2. Rotate fence until pointer indicates desired

angle on scale, then re-tighten lock knob.

Note: For instructions on calibrating your

miter gauge, see Calibrating Miter Gauge
on Page 28.

Miter Gauge

Lock Knob

Pointer

Performing Disc Sanding Operations

For disc sanding straight lines, always brace your
workpiece against the miter gauge for maximum
stability. We do not recommend disc sanding with­out a miter gauge unless absolutely necessary, as
with sanding outside curves. For more informa­tion, see Sanding Outside Curves on Page 18.

Angle
Scale

Pointer

Figure 15. Setting work table angle.

3. Re-tighten angle adjustment knob.

Model G0787 (Mfd. Since 09/14)

Work Table

To perform disc sanding operations:

1. Set work table and miter gauge angles, as

described on this page.

2. Turn machine ON.

Support

-17-

3. Place workpiece on work table and brace it
against miter gauge (see Figure 17).

Belt Sanding

The Model G0787 belt sander bed tilts from 0° –
90°, allowing for both horizontal and vertical belt
sanding.

The horizontal position is generally used for sand­ing with the grain along the length of a workpiece,
and for sanding inside curves.

The vertical position is best used with the work
table attached to the bed, for miter sanding and
sanding outside curves.

Figure 17. Disc sanding.

4. While keeping workpiece snug against miter

gauge fence, gently feed it into downward
spinning half of sanding disc.

5. Use light pressure, and slowly move work­piece side to side along downward spinning
half of sanding disc to prevent burning work­piece and excessive loading of sandpaper.

Sanding Outside Curves

The Model G0787 disc sander can be used to
sand convex (outside) curves. Since the miter
gauge is not used for this operation, use both
hands to hold the workpiece.

To sand outside curves:

1. Remove miter gauge.

2. Turn machine ON.

Adjusting Sanding Bed Angle

1. DISCONNECT MACHINE FROM POWER!

2. Loosen bed angle cap screw shown in Figure

18.

Bed

Bed Angle

Cap Screw

Figure 18. Bed angle adjustment.

3. Raise or lower bed to desired angle, then

re-tighten bed angle cap screw.

3. Place workpiece on work table, and gently
feed it into downward spinning half of sanding
disc.

4. Using light pressure, slowly move workpiece
side to side along downward spinning half of
sanding disc to prevent burning workpiece
and excessive loading of sandpaper.

-18-

Model G0787 (Mfd. Since 09/14)

Horizontal Sanding Inside Curve Sanding

1. Adjust bed to horizontal position, as described
in Adjusting Sanding Belt Bed Angle on
Page 18.

The sanding belt can be used to sand concave
(inside) curves, using the idler drum end of the
sanding belt.

2. Turn machine ON and allow sander to reach
full speed.

3. Place workpiece on surface of sanding belt,
allowing it to rest against backstop. Hold
workpiece firmly, and keep fingers away from
sanding surface (see Figure 19).

Backstop

Figure 19. Horizontal belt sanding.

To sand inside curves:

1. Turn machine ON and allow sander to reach

full speed.

2. Hold workpiece against idler drum end of
sanding belt, as shown in Figure 20, and with
light pressure, move workpiece slowly back
and forth across surface of sanding belt.

Idler Drum End

4. Using light pressure, use both hands to move
workpiece back and forth across surface of
sanding belt to prevent burning workpiece,
excessive loading of belt, and uneven belt
wear.

Figure 20. Sanding an inside curve.

Model G0787 (Mfd. Since 09/14)

-19 -

Vertical Sanding

Vertical sanding is best performed with the work
table attached to the sanding bed, for operations
similar to disc sanding. With more surface area
than the sanding disc, the sanding belt can sand
more aggressively.

5. Insert index pin of work table into mounting
hole in sanding bed (see Figure 22).

6. Insert table lock knob with washer through
slot in work table, and into threaded hole in
sander body (see Figure 22).

To mount work table to sanding bed:

1. DISCONNECT MACHINE FROM POWER!

2. Loosen and remove (2) M8-1.25 x 16 cap

screws, (2) 8mm flat washers, and backstop
(see Figure 21).

3. Loosen work table lock knob (Figure 21) and
remove lock knob, washer, and work table
from sanding disc.

Backstop

x 2

Work Table

Lock Knob

Index Pin

Threaded

Hole

Slot

Lock Knob

& Washer

Figure 22. Installing work table on sanding bed.

7. Set desired work table angle (see Setting
Work Table Angle on Page 17), and tighten

table lock knob.

Figure 21. Backstop removal.

4. Adjust sanding bed to vertical position (see
Adjusting Sanding Bed Angle on Page 18.

-20-

Model G0787 (Mfd. Since 09/14)

Changing/Replacing

Sandpaper Disc

Attaching Sandpaper Disc

1. Peel back protective layer from one-half

of new sandpaper disc and fold it against
remaining half.

The Model G0787 Disc/Belt Sander accepts 6"
diameter cloth- or paper-backed pressure sensi­tive adhesive (PSA) sandpaper discs. These are
available in a variety of grits through the Grizzly
catalog. See Accessories on Page 23 for prices
and ordering information.

The PSA sandpaper discs stick directly to the
surface of the aluminum disc.

Removing Sandpaper Disc

1. DISCONNECT MACHINE FROM POWER!

2. Remove work table.

3. Remove (2) M4.2 x 10 tap screws and disc

cover shown in Figure 23.

x 2

2. Center sticky half of sandpaper disc on upper
half of aluminum disc and press sandpaper
disc onto surface (see Figure 24).

Figure 24. Installing sanding disc.

3. Remove remaining half of protective layer

from sandpaper disc, then press remaining
portion of sandpaper disc onto aluminum
disc.

Disc Cover

Figure 23. Removing disc cover.

4. Remove old sandpaper disc from aluminum

disc.

4. Rotate disc by hand and check to make sure
sandpaper is firmly attached to disc without
any bumps or wrinkles.

5. Re-install disc cover and work table.

6. Check work table alignment and adjust if
necessary (see Aligning Work Table on
Page 28).

Model G0787 (Mfd. Since 09/14)

-21-

Changing/Replacing

To reduce risk of shock or
accidental startup, always
disconnect machine from

Adjusting Belt

Sanding Belt

power before adjustments,
maintenance, or service.

1. DISCONNECT MACHINE FROM POWER!

2. Raise sanding bed off of bed support, as
shown in Figure 25 (see Adjusting Sanding
Bed Angle on Page 18).

3. Pull belt tension release lever out (Figure 25)

to release sanding belt tension. The lever will
snap into position.

Sanding

Bed

Tracking

Drums

Belt Tension

Release Lever

Knob

Bed

Support

Tracking

The belt tracking needs to be adjusted any time
you change or replace the sanding belt, or if the
belt moves to one side or the other of the sanding
bed during operations.

To check and adjust sanding belt tracking:

1. Remove all tools from sander.

2. Connect machine to power source and turn

ON, then immediately turn machine OFF.
Sanding belt should be centered on drums
and not move toward front or back of sander.

— If sanding belt does move toward front or

back, proceed to Step 3.

3. If sanding belt moves toward disc (front of
sander), rotate tracking knob (see Figure 25)
clockwise

4. If sanding belt moves away from disc (toward
back of machine), rotate tracking knob coun­terclockwise

5. Turn machine ON, then immediately turn
machine OFF. Sanding belt should be cen­tered on drums and not move toward front or
back of sander. Belt is tracking properly and
no further adjustments need to be made.

1

⁄4 turn.

1

⁄4 turn.

Figure 25. Changing/replacing sanding belt.

4. Remove old sanding belt from sanding bed.

5. Place new sanding belt on bed, then push

belt tension lever in to place tension on belt.

Note: Make sure arrow on inside of sanding

belt points same direction as belt rotation
arrow on machine.

6. Rotate belt by hand to verify belt moves freely
without rubbing against any parts of machine.

7. Check and adjust belt tracking (see following
instructions).

-22-

— If sanding belt does move toward front or

back, repeat Steps 3–5 until proper belt
tracking is achieved.

Note: Listen for any unusual noises, vibra-

tions, or rubbing while adjusting tracking. If
anything sounds unusual, stop sander imme­diately. Disconnect machine from power
source and find source of problem before
operating further. If you cannot locate source
of unusual noise or vibration, feel free to con­tact our service department for help.

Model G0787 (Mfd. Since 09/14)

ACCESSORIES

Installing unapproved accessories may

order online at www.grizzly.com or call 1-800-523-4777

SECTION 5: ACCESSORIES

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.

®

Grizzly

These tough aluminum-oxide 4" x 36" sanding
belts are sold in a 10 -pack.

T21479—Sanding Belt 4" x 36" A/O 60-Grit
T21480—Sanding Belt 4" x 36" A/O 80-Grit
T21481—Sanding Belt 4" x 36" A/O 100-Grit
T21482—Sanding Belt 4" x 36" A/O 120-Grit
T21483—Sanding Belt 4" x 36" A/O 150-Grit
T21484—Sanding Belt 4" x 36" A/O 180-Grit
T21485—Sanding Belt 4" x 36" A/O 220-Grit

Sanding Belts

Sanding Discs

These 6" diameter aluminum-oxide sanding discs
are pre-applied with top-quality pressure sensitive
adhesive and sold in a 3-pk.

D1307—Sandpaper Disc 6" A/O 60-Grit
D1308—Sandpaper Disc 6" A/O 80-Grit
D1309—Sandpaper Disc 6" A/O 100-Grit
D1310—Sandpaper Disc 6" A/O 120-Grit
D1311—Sandpaper Disc 6" A/O 150-Grit
D1312—Sandpaper Disc 6" A/O 180-Grit
D1313—Sandpaper Disc 6" A/O 220-Grit

Figure 27. 6" sanding discs.

Figure 26. Grizzly® sanding belts.

PRO-STICK® Abrasive Belt and Disc Cleaners

Extend the life of your sanding discs and belts!

1

W1306 —1
W1307—2" X 2" X 12"

Figure 28.

⁄2" X 11⁄2" X 81⁄2"

PRO-STICK

®

abrasive cleaners.

Model G0787 (Mfd. Since 09/14)

-23-

®

D2056—700 Lb. Capacity Shop Fox

Stand

A perfect stand for mounting your smaller
machines on. Sturdy and rugged for everyday
shop use.

Figure 29. D2056 Shop Fox® Stand.

H2993—4-Pc Machinist Square Set

This is a handy set to have around. Each square
is finely ground stainless steel. All have common
beam and blade widths and thicknesses which
will allow them to be used in combination. 2”, 3”,
4” & 6” squares.

1

W1314—Wire Hose Clamp 2

⁄2"

W1317—Wire Hose Clamp 4"

1

W1044—Dust Collection Adapter 2

⁄2" x 4"
W1007—Plastic Blast Gate 4"
W1053—Anti-Static Grounding Kit

1

W2046—Shop Vacuum Adapter 2

⁄2" x 2 1⁄2"

We've hand picked a selection of dust collection
components commonly needed to connect the
Model G0787 to basic machinery.

W2046

W1317

W1007

W1053

W1044

Figure 31. H2993 4-Pc. Square Set.

H7724—60" Birch Workbench w/Drawers

When organized storage is every bit as import­ant as a stable work surface, this workbench is
just what you need. Includes six drawers with
ball bearing slides and two lower compartments.
The end vise also includes two bench dogs.

3

Specifications: 2

⁄4" top edge thickness; 60"W
x 20"D x 34"H; 148 lbs. approximate shipping
weight.

Figure 30. Dust collection accessories.

-24-

Figure 32. H7724 60" Birch Workbench with

Drawers.

Model G0787 (Mfd. Since 09/14)

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 your machine,
follow this maintenance schedule and refer to any
specific instructions given in this section.

Daily Check

• Loose mounting bolts.

• Worn/damaged sanding disc or sanding belt.

• Worn or damaged wires.

• Any other unsafe condition.

As Needed

• Clean/replace sanding disc or sanding belt.

Protecting

Cleaning the Model G0787 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.

Cleaning Sanding

Belt/Disc

Using an abrasive belt/disc cleaner can prolong
the life of a clogged sanding belt/disc, provided it
is in otherwise good condition. See Accessories
on Page 23 for more details.

To clean sanding belt/disc:

Monthly Check

• Drive belt tension, damage, or wear.

1. Turn machine ON.

2. Using backstop or work table as support,

rub abrasive cleaner on sanding belt/disc in
continuous motion, covering entire surface of
belt/disc until belt/disc is no longer clogged.

3. Turn machine OFF.

Model G0787 (Mfd. Since 09/14)

-25-

Review the troubleshooting and procedures in this section if a problem develops with your machine. If
you need replacement parts or additional help with a procedure, call our Technical Support.

gather the serial number and manufacture date of your machine before calling.

SECTION 7: SERVICE

Troubleshooting

Symptom Possible Cause Possible Solution

Machine does not
start or a breaker
trips.

Machine stalls or is
underpowered.

Machine has
vibration or noisy
operation.

1. Switch disabling key removed.

2. Incorrect power supply voltage or circuit
size.

3. Power supply circuit breaker tripped or fuse
blown.

4. Motor wires connected incorrectly.

5. Wiring open/has high resistance.

6. ON/OFF switch at fault.

7. Start capacitor at fault.

8. Motor at fault.

1. Machine undersized for task.

2. Workpiece material not suitable for
machine.

3. Sanding with too much pressure.

4. Workpiece crooked; fence loose or
misadjusted.

5. Drive belt damaged and slipping.

6. Dust collection ducting problem, causing
dust buildup.

7. Dust collector undersized, causing dust
buildup.

8. Motor wired incorrectly.

9. Plug/receptacle at fault.

10. Motor overheated.

11. Pulley/sprocket slipping on shaft.

1. Machine incorrectly mounted to workbench
or floor.

2. Motor or component loose.

3. Motor bearings at fault.

4. Drive belt slapping cover.

5. Sanding disc or drive roller out of balance,
damaged, or loose.

1. Install switch disabling key (Page 16).

2. Ensure correct power supply voltage and circuit size
(Page 9).

3. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.

4. Correct motor wiring connections (Page 31).

5. Check/fix broken, disconnected, or corroded wires.

6. Replace switch.

7. Test/replace.

8. Test/repair/replace.

1. Clean/replace sandpaper (Pages 25 & 22); reduce
feed rate/sanding depth.

2. Only sand wood—ensure moisture is below 20%.

3. Reduce pressure of workpiece against sanding belt/
disc.

4. Straighten or replace workpiece/adjust fence.

5. Inspect/replace drive belt (Page 29).

6. Clear blockages, seal leaks, use smooth wall duct,
eliminate bends, close other branches.

7. Move closer to machine/redesign ducting layout/
upgrade dust collector.

8. Wire motor correctly (Page 31).

9. Test for good contacts/correct wiring.

10. Clean motor, let cool, and reduce workload.

11. Replace loose pulley/shaft.

1. Adjust feet, shim, or tighten mounting hardware.

2. Inspect/replace damaged bolts/nuts, and retighten
with thread locking fluid.

3. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.

4. Replace/tension drive belt.

5. Tighten, adjust, or replace affected component
(Page 21).

Note: Please

-26-

Model G0787 (Mfd. Since 09/14)

Symptom Possible Cause Possible Solution

Sanding grains
easily rub off belt or
disc.

Deep sanding
grooves or scars in
workpiece.

Sanding belt/disc
clogs quickly or
burns workpiece.

Glazed sanding
surface.

Burn marks on
workpiece.

Workpiece gets
pulled out of your
hand while belt
sanding.

Workpiece lifts up
from sanding disc
table.

1. Sanding belt/disc has been stored in an
incorrect environment.

2. Sanding belt/disc has been smashed or
folded.

1. Sanding belt/disc too coarse for desired
finish.

2. Workpiece sanded across the grain.

3. Too much sanding force on workpiece.

4. Workpiece held still for too long against
belt/disc.

1. Too much pressure on sanding belt/disc.

2. Sanding softwood.

3. Sanding belt/disc clogged.

4. Sanding belt/disc worn or damaged.

1. Sanding wet stock.

2. Sanding stock with high amount of residue.

1. Sanding grit too fine.

2. Using too much pressure.

3. Workpiece held still for too long.

1. Not supporting workpiece against backstop. 1. Use backstop to support workpiece.

1. Sanding on the upward spinning half of
sanding disc.

1. Store sanding belt/disc in a cool, dry area.

2. Store sanding belt/disc flat, and not bent or folded.

1. Use finer grit sanding belt/disc (Pages 21 & 22).

2. Sand with grain.

3. Reduce pressure on workpiece while sanding.

4. Keep workpiece moving while sanding.

1. Reduce pressure of workpiece against sanding belt/
disc.

2. Use different stock, or accept characteristics of
stock and plan to clean/replace sanding belt/disc
frequently.

3. Clean sanding belt/disc (Page 25).

4. Replace sanding belt/disc (Pages 21 & 22).

1. Only sand dry stock.

2. Use different stock, or accept characteristics of
stock and plan to clean/replace sanding belt/disc
frequently.

1. Use coarser grit sanding belt/disc (Pages 21 & 22).

2. Reduce pressure of workpiece against sanding belt/
disc.

3. Keep workpiece moving while sanding.

1. Sand on downward spinning half of sanding disc.

Model G0787 (Mfd. Since 09/14)

-27-

Aligning Work Table

The work table must be aligned so that the miter
slot is parallel to the sanding disc for accurate
miter sanding, and with
table and sanding disc to prevent the disc from
rubbing against the table during operations.

1

⁄16" gap between the work

4. Loosen flange nuts shown in Figure 34.

Work table alignment should be checked and
adjusted, if necessary, before each use or any
time the work table is removed and re-installed.

To align work table:

1. DISCONNECT MACHINE FROM POWER!

2. Set work table angle to 0° (see Setting Work
Table Angle on Page 17).

3. Check miter slot parallelism by measuring

distance from each end of sanding disc to
edge of miter slot (see Figure 33). Distance
"A" should be equal to distance "B" with
gap between table and disc.

1

⁄16" Gap

1

⁄16"

x 3

Figure 34. Work table alignment nuts.

5. Adjust table so distance "A" equals distance

"B" (Figure 33), with
and sanding disc.

6. Re-tighten flange nuts from Step 4.

7. Re-check miter slot parallelism and spin disc

by hand to verify that sanding disc does not
touch work table. If necessary, repeat Steps
4–6 until proper work table alignment is
achieved.

1

⁄16" gap between table

Calibrating Miter

B

A

Figure 33. Work table alignment.

— If distance "A" is not equal to distance "B"

and/or there is not a
and disc, proceed to Step 4.

1

⁄16" gap between table

Gauge

The miter gauge is pre-calibrated at the factory.
However, during shipping or after prolonged use,
the gauge may come out of alignment. Follow the
instructions below any time you notice the miter
gauge producing inaccurate results.

To check and calibrate miter gauge:

1. DISCONNECT MACHINE FROM POWER!

2. Align work table.

-28-

Model G0787 (Mfd. Since 09/14)

3. Loosen miter gauge lock knob and use a
machinist's square with one edge against
miter gauge fence and other edge against
sanding disc, as shown in Figure 35.

2. Remove drive belt cover plate (see Figure 36).

3. Loosen (3) belt housing screws shown in
Figure 36 to relieve tension on drive belt.

Lock Knob

Pointer

Calibration

Screw

Miter Scale

Fence

Figure 35. Calibrating miter gauge.

4. Re-tighten lock knob, making sure machin-

ist's square remains flat against both miter
gauge fence and sanding disc.

5. Pointer shown in Figure 35 should point to
"0" on the miter scale.

— If the pointer does not point to "0" on the

miter scale, proceed to Step 6.

6. Loosen calibration screw shown in Figure
35, and move pointer so it points to "0" on

miter scale, making sure fence remains flush
with machinist's square.

Machinist's

Square

Drive Belt

Housing

Drive Belt

Housing

Screws

Figure 36. Example of drive belt housing

screws.

4. Remove old drive belt and place new drive
belt around pulleys.

5. Insert screwdriver into tension hole, as shown
in Figure 37, and pull up against belt housing
to tighten drive belt.

Tension

Hole

7. Re-tighten screw, then verify calibration by
repeating Steps 3–5.

Replacing Drive Belt

To replace and tension drive belt:

1. DISCONNECT MACHINE FROM POWER!

Model G0787 (Mfd. Since 09/14)

Figure 37. Example of tensioning drive belt.

6. While keeping tension on belt with screw-

driver, use other hand to tighten belt housing
screws from Step 3.

7. Test belt tension by squeezing belt between
your fingers. There should be no more than

1

⁄4" of play in belt.

Note: Too much tension in belt will cause

increased noise and may overload motor.
However, if drive belt is too loose, it may slip
and cause excessive wear on belt.

8. Replace drive belt cover plate.

-29-

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
[phone] 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 [phone].

The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.

-30-

Model G0787 (Mfd. Since 09/14)

PADDLE SWITCH/RELAY

Ground

Ground

The wiring shown here was current
at the time of printing, but changes
may occur over time. Verify your
machine matches this diagram

(Viewed from Behind)

KEDU HY7

Relay WE-10

Wiring Diagram

Machine Housing

Start

Capacitor

100MFD
125VAC

before using it.

Paddle
Switch

Motor

Start

Capacitor

Relay

MOTOR

110 VAC

5-15 Plug

(As Recommended)

Neutral

Hot

Ground

Figure 38. Paddle switch, relay, start capacitor,

and motor.

Model G0787 (Mfd. Since 09/14)

READ ELECTRICAL SAFETY

ON PAGE 30!

-31-

53

26

44

66

43

67

61

62

68

81

86

69

82

70

63

SECTION 9: PARTS

Main Breakdown

43

44

45

46

44

41

88

71

84

47

72

23

87

73

18

60

74

68

12

59

69

3

1

44

75

78

64

76

17

77

65

12

2

40

54

42

90

49

89

12

85

5

56

11

16

30

55

50

48

52

15

10

41

32

51

91

9

80

39

8

57

43

7

54

19

20

58

34

32

38

79

15

13

37

34

29

21

6

4

32

28

27

14

12

22

83

92

36

35

33

32

31

25

24

-32-

Model G0787 (Mfd. Since 09/14)

Main Breakdown

REF PART # DESCRIPTION REF PART # DESCRIPTION

1 P0787001 PHLP HD SCR M4-.7 X 6 W/WASHER 47 P0787047 PHLP HD SCR M5-.8 X 20
2 P0787002 PHLP HD SCR M4-.7 X 8 W/WASHERS 48 P0787048 SPACER
3 P0787003 BASE BOTTOM COVER 49 P0787049 CONNECTION PLATE
4 P0787004 TAP SCREW M4 X 10 50 P0787050 EXTENSION SPRING
5 P0787005 EXT TOOTH WASHER 4MM 51 P0787051 SANDING BELT TENSION LEVER
6 P0787006 DISC COVER 52 P0787052 FENDER WASHER 5MM
7 P0787007 SANDPAPER DISC 6" PSA A/O 80-GRIT 53 P0787053 HEX BOLT M6-1 X 20
8 P0787008 CAP SCREW M6-1 X 16 54 P0787054 PHLP HD SCR M5-.8 X 16
9 P0787009 EXT TOOTH WASHER 6MM 55 P0787055 TRACKING CONTROL KNOB M6-1 X 45
10 P0787010 SANDING DISC 6" (ALUMINUM) 56 P0787056 GROUND WIRE INDICATOR PLATE
11 P0787011 DUST COLLECTION CHUTE 57 P0787057 RUBBER WASHER 6MM
12 P0787012 PHLP HD SCR M5-.8 X 8 58 P0787058 COMPRESSION SPRING
13 P0787013 FLAT WASHER 5MM 59 P0787059 SANDING BELT SUPPORT
14 P0787014 FLAT WASHER 5MM 60 P0787060 BACKSTOP
15 P0787015 EXT TOOTH WASHER 5MM 61 P0787061 DRIVE ROLLER
16 P0787016 CLEVIS PIN 5 X 10 62 P0787062 SET SCREW M8-1.25 X 12
17 P0787017 BASE 63 P0787063 DRIVE SHAFT
18 P0787018 CORD CLIP 64 P0787064 BEARING COVER
19 P0787019 ELECTRICAL BOX COVER 65 P0787065 FRAME COVER
20 P0787020 TAP SCREW M3 X 30 66 P0787066 PHLP HD SCR M5-.8 X 10
21 P0787021 RELAY WE-101 67 P0787067 DRIVE BELT COVER
22 P0787022 ELECTRICAL BOX 68 P0787068 PHLP HD SCR M5-.8 X 16 LH
23 P0787023 INSULATED SLEEVE 69 P0787069 LOCKING FLAT WASHER 5MM
24 P0787024 TOGGLE SWITCH 125/250V W/KEY 70 P0787070 TIMING BELT 150XL037
25 P0787025 PHLP HD SCR M4-.7 X 10 71 P0787071 IDLER ROLLER
26 P0787026 LOCK WASHER 6MM 72 P0787072 PHLP HD SCR M5-.8 X 25 W/WASHER
27 P0787027 LOCK NUT M5-.8 73 P0787073 BEARING BASE
28 P0787028 S CAPACITOR 100M 125V 1-3/8 X 2-5/16 74 P0787074 PHLP HD SCR M6-1 X 25 W/WASHERS
29 P0787029 CAPACITOR CLAMP 75 P0787075 CAP SCREW M8-1.25 X 25
30 P0787030 PHLP HD SCR M5-.8 X 12 76 P0787076 BELT COVER
31 P0787031 HEX BOLT M6-1 X 12 77 P0787077 HEX NUT M8-1.25
32 P0787032 FENDER WASHER 6MM 78 P0787078 MOTOR PULLEY
33 P0787033 WORK TABLE SUPPORT 79 P0787079 PHLP HD SCR M5-.8 X 8
34 P0787034 MITER GAUGE KNOB M6-1 X 20 80 P0787080 PHLP HD SCR M5-.8 X 25
35 P0787035 WORK TABLE 81 P0787081 MOTOR 1/2 HP 120V 1-PH
36 P0787036 MITER GAUGE SLIDE BAR 82 P0787082 POWER CORD 18G 3W 72" 5-15P
37 P0787037 MITER GAUGE SCALE POINTER 83 P0787083 SWITCH PLATE
38 P0787038 MITER GAUGE 84 P0787084 DUST COLLECTION COVER
39 P0787039 COTTER PIN 2 X 10MM 85 P0787085 FRAME SUPPORT
40 P0787040 COMPRESSION SPRING 86 P0787086 SANDING BELT 4 X 36" A/O 80-GRIT
41 P0787041 BUSHING 87 P0787087 FLAT WASHER 8MM
42 P0787042 BELT TENSIONER 88 P0787088 CAP SCREW M8-1.25 X 16
43 P0787043 EXT RETAINING RING 12MM 89 P0787089 TENSION LEVER BRACKET
44 P0787044 BALL BEARING 6001ZZ 90 P0787090 CAPTIVE PIN 5 X 8
45 P0787045 SANDING BELT IDLER PULLEY 91 P0787091 TAP SCREW M4 X 20
46 P0787046 SANDING BELT IDLER SHAFT 92 P0787092 TAP SCREW M3 X 8

Model G0787 (Mfd. Since 09/14)

-33-

Labels & Cosmetics

REF PART # DESCRIPTION REF PART # DESCRIPTION

93 P0787093 READ MANUAL LABEL 97 P0787097 ELECTRICITY LABEL
94 P0787094 BELT/DISC ROTATION LABEL 98 P0787098 DISCONNECT 120V LABEL
95 P0787095 MACHINE ID LABEL 99 P0787099 GRIZZLY GREEN TOUCH-UP PAINT
96 P0787096 EYE/LUNG INJURY HAZARD LABEL

97

94

99

96

98

95

93

98

-34-

Model G0787 (Mfd. Since 09/14)

CUT ALONG DOTTED LINE

Name _____________________________________________________________________________

Street _____________________________________________________________________________

City _______________________ State _________________________ Zip _____________________

Phone # ____________________ Email _________________________________________________

Model # ____________________ Order # _______________________ Serial # __________________

WARRANTY CARD

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

1. How did you learn about us?
____ Advertisement ____ Friend ____ Catalog
____ Card Deck ____ Website ____ Other:

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

3. What is your annual household income?

____ $20,000-$29,000 ____ $30,000-$39,000 ____ $40,000-$49,000
____ $50,000-$59,000 ____ $60,000-$69,000 ____ $70,000+

4. What is your age group?
____ 20-29 ____ 30-39 ____ 40-49
____ 50-59 ____ 60-69 ____ 70+

5. How long have you been a woodworker/metalworker?
____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____ 20+ Years

6. How many of your machines or tools are Grizzly?
____ 0-2 ____ 3-5 ____ 6-9 ____10+

7. Do you think your machine represents a good value? _____Yes _____No

8. Would you recommend Grizzly Industrial to a friend? _____Yes _____No

9. Would you allow us to use your name as a reference for Grizzly customers in your area?
Note: We never use names more than 3 times. _____Yes _____No

10. Comments: _____________________________________________________________________

_________________________________________________________________________________

_________________________________________________________________________________

_________________________________________________________________________________

____ Cabinetmaker & FDM
____ Family Handyman
____ Hand Loader
____ Handy
____ Home Shop Machinist
____ Journal of Light Cont.
____ Live Steam
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____ Old House Journal
____ Popular Mechanics

____ Popular Science
____ Popular Woodworking
____ Precision Shooter
____ Projects in Metal
____ RC Modeler
____ Rie
____ Shop Notes
____ Shotgun News
____ Today’s Homeowner
____ Wood

____ Wooden Boat
____ Woodshop News
____ Woodsmith
____ Woodwork
____ Woodworker West
____ Woodworker’s Journal
____ Other:

TAPE ALONG EDGES--PLEASE DO NOT STAPLE

FOLD ALONG DOTTED LINE

FOLD ALONG DOTTED LINE

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

Place

Stamp

Here

Name_______________________________

Street_______________________________

City______________State______Zip______

Send a Grizzly Catalog to a friend:

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.

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

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

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

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