15" PLANER
MODEL G1021
INSTRUCTION MANUAL
COPYRIGHT © 1986 BY GRIZZLY INDUSTRIAL, INC. REG.# TX 3 170 572
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
REVISED FEBRUARY, 1999. PRINTED IN U.S.A
G1021 15" Planer -3-
Table Of Contents
PAGE
1. SAFETY ..........................................................................................................................3
SAFETY SYMBOLS ..................................................................................................3
SAFETY INSTRUCTIONS FOR POWER TOOLS ................................................3-4
ADDITIONAL SAFETY INSTRUCTIONS FOR PLANERS........................................5
2. CIRCUIT REQUIREMENTS .......................................................................................... 6
220V OPERATION ....................................................................................................6
FUSING ....................................................................................................................6
GROUNDING ............................................................................................................6
EXTENSION CORDS ................................................................................................6
3. INTRODUCTION ............................................................................................................ 7
COMMENTARY ........................................................................................................7
UNPACKING..............................................................................................................8
PIECE INVENTORY ..................................................................................................8
CLEAN UP ................................................................................................................9
SITE CONSIDERATIONS ........................................................................................9
4. ASSEMBLY.................................................................................................................. 10
OVERVIEW..............................................................................................................10
OPTIONAL STAND ................................................................................................10
PLANER UNIT ........................................................................................................11
STARTER SWITCH ................................................................................................11
HANDWHEEL ..........................................................................................................12
KNIFE SETTING JIG ..............................................................................................12
EXTENSION ROLLERS ..........................................................................................13
DUST PORT ............................................................................................................13
5. ADJUSTMENTS............................................................................................................14
OVERVIEW..............................................................................................................14
GAUGE BLOCK ......................................................................................................15
TABLE ADJUSTMENT ......................................................................................15-16
KNIFE INSPECTION ..........................................................................................16-17
KNIFE ADJUSTMENT........................................................................................17-18
CHIP BREAKER ................................................................................................18-19
FEED ROLLER HEIGHT ....................................................................................19-20
FEED ROLLER PRESSURE..............................................................................20-21
BED ROLLERS ..................................................................................................21-22
CHIP DEFLECTOR ................................................................................................22
ANTI-KICKBACK ....................................................................................................23
BELTS ................................................................................................................23-24
GEARBOX ..........................................................................................................24-25
THICKNESS SCALE ..............................................................................................26
-4- G1021 15" Planer
Table Of Contents
PAGE
6. OPERATIONS ..............................................................................................................27
OVERVIEW..............................................................................................................27
TABLE LOCKS ........................................................................................................27
POWER FEED ........................................................................................................28
HANDWHEEL ..........................................................................................................28
DEPTH LIMITER ....................................................................................................28
TEST RUN ..............................................................................................................29
WOOD SPECIES ....................................................................................................29
PLANING DIFFICULTIES........................................................................................30
7. MAINTENANCE ............................................................................................................31
GENERAL................................................................................................................31
TABLE......................................................................................................................31
KNIVES....................................................................................................................31
LUBRICATION....................................................................................................32-33
8. CLOSURE ....................................................................................................................34
MACHINE DATA......................................................................................................35
TROUBLESHOOTING ............................................................................................36
PARTS BREAKDOWN AND PARTS LISTS ......................................................37-42
ADJUSTMENT BLOCK PATTERN..........................................................................43
WARRANTY AND RETURNS ................................................................................44
G1021 15" Planer -5-
Safety Instructions For Power Tools
SECTION 1: SAFETY
For Your Own Safety Read Instruction
Manual Before Operating This Equipment
Failure to obey a DANGER symbol and notation WILL
result in
serious personal injury including loss of life or body parts.
Failure to obey a WARNING symbol and notation can
result in
serious injury to yourself and others.
Failure to obey a CAUTION symbol and notation may result in
minor or moderate property damage or personal injury.
This symbol is used to alert the user to useful information about
safe and proper operation of the equipment.
The purpose of safety symbols is to attract your attention to possible dangers. This manual uses
a series of symbols which are intended to convey the level of criticality of the safety message.
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.
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors should be
kept a safe distance from work area.
6. MAKE WORK SHOP CHILD PROOF with
padlocks, master switches, or by removing
starter keys.
7. DON’T FORCE TOOL. It will do the job
better and safer at the rate for which it was
designed.
8. USE RIGHT TOOL. Don’t force tool or
attachment to do a job for which it was not
designed.
1. KEEP GUARDS IN PLACE and in working
order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are
removed from tool before turning on.
3. KEEP WORK AREA CLEAN. Cluttered
areas and benches invite accidents.
4. DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp or
wet locations, or where any flammable or
noxious fumes may exist. Keep work area
well lighted.
WARNING
NOTE
CAUTION
WARNING
DANGER
WARNING
-6- G1021 15" Planer
Safety Instructions For Power Tools
WARNING
14. MAINTAIN TOOLS WITH CARE. Keep
tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
15. DISCONNECT TOOLS before servicing
and changing accessories, such as blades,
bits, cutters, and the like.
16. REDUCE THE RISK OF UNINTENTIONAL
STARTING. Make sure switch is in off posi-
tion before plugging in.
17. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recommended accessories. The use of improper
accessories may cause risk of injury.
18. CHECK DAMAGED PARTS. Before further
use of the tool, a guard or other part that is
damaged should be carefully checked to
determine that it will operate properly and
perform its intended function. Check for
alignment of moving parts, binding of moving parts, breakage of parts, mounting, and
any other conditions that may affect its operation. A guard or other part that is damaged
should be properly repaired or replaced.
19. DIRECTION OF FEED. Feed work into a
blade or cutter against the direction of rotation of the blade or cutter only.
20. NEVER LEAVE TOOL RUNNING UNAT-
TENDED. TURN POWER OFF. Don’t leave
tool until it comes to a complete stop.
9. USE PROPER EXTENSION CORD. Make
sure your extension cord is in good condition. When using an extension cord, be
sure it is rated Hard Service (grade S) or
better. Conductor size must be 16 A.W.G.
for cords up to 100 feet in length. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating.
Your extension cord must also contain a
ground wire and plug pin. Always repair or
replace extension cords if they become
damaged. Minimum Gage for extension
cord:
12 A.W.G. 50ft
10 A.W.G. 100ft
10. WEAR PROPER APPAREL. Do not wear
loose clothing, gloves, neckties, rings,
bracelets, or other jewelry which may get
caught in moving parts. Non-slip footwear
is recommended. Wear protective hair covering to contain long hair.
11. ALWAYS USE SAFETY GLASSES. Also
use face or dust mask if cutting operation is
dusty. Everyday eyeglasses only have
impact resistant lenses, they are NOT safety glasses.
12. SECURE WORK. Use clamps or a vise to
hold work when practical. It’s safer than
using your hand and frees both hands to
operate tool.
13. DON’T OVERREACH. Keep proper footing
and balance at all times.
G1021 15" Planer -7-
Additional Safety Instructions For Planers
WARNING
No list of safety guidelines can be complete. Every shop environment is different.
Always consider safety first, as it applies to
your individual working conditions. Use
this and other machinery with caution and
respect. Failure to do so could result in
serious person injury, damage to equipment or poor work results.
Like all power tools, there is danger associated with the Model G1021 15" Planer.
Use the tool with respect and caution to
lessen the possibility of mechanical damage or operator injury. If normal safety precautions are overlooked or ignored.
Serious personal injury may occur.
Always wear ANSI-approved safety glasses
or goggles and hearing protection when
operating equipment. Do not allow visitors
into your workshop when testing or operating equipment unless similarly equipped.
Serious personal injury may occur.
1. Ensure that the machine sits firmly on the
floor before use. Any “wobbles” must be
corrected by shimming or blocking before
operation.
2. This machine is not designed to process
any other material except wood.
3. Never position fingers or thumbs near the
infeed roller.
4. Long stock should always be fully support-
ed by some type of support fixture.
5. Do not operate planer with dull or damaged
knives.
6. Ensure that the planer is properly adjusted
before using.
7. Do not remove excessive amounts of
wood in a single pass.
8. Inspect your stock before planing. Reject
stock with defects and foreign material.
9. Do not attempt to remove jams until power
is disconnected and all moving parts have
come to a complete stop.
10. Provide adequate infeed and outfeed
space for operating the planer.
11. Do not plane wood less than 12" long and
1
⁄
4" thick.
12. Do not plane lumber with loose knots or
knots that may become loose during
planing.
WARNING
CAUTION
WARNING
-8- G1021 15" Planer
220V Operation
SECTION 2: CIRCUIT REQUIREMENTS
The G1021 Planer motor is wired to operate at
220V only. A cordset without a 220V plug is
included with the Model G1021. Plugs and receptacles can be purchased at your local hardware
store or home center. When connecting to 220V,
ensure that the electrical circuit is in fact a 220V
circuit. Contact your local electrical contractor if
uncertain about converting to 220V operation.
When operating at 220V, we recommend using a
NEMA-style 6-15 plug and outlet as depicted in
Figure 1. You may also “hard-wire” the planer
directly to your panel, provided you place a disconnect switch near the machine. Check the
electrical codes in your area for specifics on
wiring requirements.
Under normal load, the Model G1021 draws
about 12 amps. We recommend a 15-amp circuit
or a 20-amp slow-blow fuse. A circuit rated any
higher will not adequately protect the motor.
Equipment returned to us for service that shows
evidence of being over-fused will be repaired or
replaced totally at the customer’s expense,
regardless of the present warranty status.
Fusing
If used, extension cords must be rated hard service – grade S – or better. Conductor size must
be 12 AWG for cords up to 50 feet in length. Your
extension cord must also contain a ground wire
and plug pin. To ensure safe and dependable
machine performance, inspect cords frequently
for wear or damage. Replace or repair the cord
immediately if evidence of damage is apparent.
Extension Cords
Grounding
This equipment must be grounded. Please
ensure that this machine is continuously
grounded from the motor to the machine frame
and then to a known ground. Verify that any
existing electrical outlet and circuit you intend
to plug into is actually grounded. If it is not, it
will be necessary to run a separate 12 A.W.G.
copper grounding wire from the outlet to a
known ground. Under no circumstances should
the grounding pin from any three-pronged plug
be removed. Serious injury may occur.
Figure 1. NEMA 6-15 220V/15A connector.
In the event of an electrical short, grounding
reduces the risk of electric shock by providing a
path of least resistance to disperse electric current. This tool is equipped with a power cord having an equipment-grounding conductor. The outlet must be properly installed and grounded in
accordance with all local codes and ordinances.
WARNING
G1021 15" Planer -9-
SECTION 3: INTRODUCTION
Commentary
Grizzly Industrial, Inc. is proud to offer the Model
G1021 15" Planer. The G1021 is part of Grizzly’s
growing family of fine woodworking and metalworking machinery. When used according to the
guidelines stated in this manual, you can expect
years of trouble-free, enjoyable operation.
The Model G1021 is intended for home and professional use. The G1021 features a 2 HP, 220V
single-phase motor with magnetic power switch,
precision ground cast iron table, bed rollers,
extension rollers and dual feed capability for
maximum versatility.
Optional accessories are available through
Grizzly Industrial and include a stand, mobile
base, knife setting jigs and replacement knives.
We are also pleased to provide this manual with
the Model G1021. It was written to guide you
through assembly, review safety considerations,
and cover general operating procedures. It represents our effort to produce the best documentation possible. If you have any comments regarding this manual, please write to us at the address
below:
Grizzly Industrial, Inc.
C
/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
To operate this, or any power tool, safely and efficiently, it is essential to become as familiar with
its characteristics as possible. Take as much time
as necessary to become acquainted with the
Model G1021. The time you invest before you
begin to use your machine will be time well spent.
Also, read all of the safety procedures. If you do
not understand something, DO NOT operate the
machine.
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G1021 as supplied when the manual was prepared. However, owing to Grizzly’s policy of continuous improvement, changes may be made at
any time with no obligation on the part of Grizzly.
Whenever possible, though, we send manual
updates to all owners of a particular tool or
machine. Should you receive one, we urge you to
insert the new information with the old and keep
it for reference.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: techsupport@grizzly.com
Web Site: http://www.grizzly.com
The information in this manual has been
obtained from sources we believe to be reliable and as up-to-date as possible. We have
included some important safety measures
we believe to be essential for safe operation. While most safety measures are generally universal, Grizzly reminds you that
each workshop is different and safety rules
should be considered as they apply to your
specific situation.
Above all else, we stand behind our machines.
We have an excellent service department at your
disposal should the need arise. If you have any
service questions or parts requests, please call or
write to us at the location listed below.
NOTE
-10- G1021 15" Planer
Unpacking
The bandsaw is shipped from the factory in a
carefully packed carton. If you find the machine to
be damaged after you’ve signed for delivery and
the truck and driver are already gone, you will
need to file a freight claim with the carrier. Save
the containers and all packing materials for
inspection by the carrier or their agent. Without
the packing materials, filing a freight claim can be
difficult. If you need advice regarding this situation, please call us immediately.
The G1021 is a heavy machine with a 475 lb.
shipping weight. DO NOT over-exert yourself while unpacking or moving your
machine – get assistance. In the event that
your planer must be moved up or down a
flight of stairs, be sure that the stairs are
capable of supporting the combined weight
of people and the machine. Failure to use
care while assembling or moving could
result in serious personal injury.
Parts Inventory
Now is a good time to inventory the fasteners
required for assembly:
Hardware Qty
Cap Screw 6mm - 1.0 x 12 3
Lock Washer 6mm 3
Hex Bolts 6mm - 1.0 x 12 3
Hex Nuts 6mm - 1.0 3
Washers 6mm 6
Knife Setting Jig Rod 1
Knife Setting Jig Brackets 2
E-clips 2
Allen
®
Wrench 3mm 1
Allen
®
Wrench 4mm 1
Allen
®
Wrench 5mm 1
Allen
®
Wrench 6mm 1
Open End Wrench 8-10mm 1
Open End Wrench 12-14mm 1
Handle 1
Hex Nut 10mm - 1.25 1
Flat Washer 10mm 1
Scale 1
Hex Bolts 8mm -1.25 x 20 6
Flat Washers 8mm 6
Setscrews 8mm - 1.25 x 12 6
Stand Hardware (Optional) Qty
Carriage Bolts
5
⁄
16" - 18 x
5
⁄
8"24
Hex Nuts
5
⁄
16" - 18 28
Flat Washers
5
⁄16"24
Hex Bolts
5
⁄16" - 18 x 2" 4
Fender Washers 8
In the event that any parts are missing, we will be
happy to replace them. Contact our Customer
Service number for assistance. If any non-proprietary parts such as nuts, bolts or washers are
missing, we will be happy to replace these too,
but for the sake of expediency, these items can
be obtained at your local hardware store.
Take a quick inventory of the parts and put them
aside for assembly later. After all the parts have
been removed from the container, you should
have:
• Planer Unit
• Dust Port
• Roller Extensions
• Hand Wheel
• Stand Top (Optional)
• Stand Legs (Optional)
• Stand Braces (Optional)
Some die-cut metal parts may have sharp
edges (called “flashing”) on them after they
are formed. Please examine the edges of
all die-cut metal parts before handling
them. Failure to do so could result in injury.
WARNING
CAUTION
G1021 15" Planer -11-
Clean Up
The unpainted surfaces are coated with a waxy
oil to protect it from corrosion during shipment.
Remove the protective coating with common
paint thinner (mineral spirits) and paper towels.
Do not use gasoline or other petroleum based
solvents because of their extremely low flash
points. Do not use chlorine-based solvents – if
you happen to splash some onto a painted surface, you’ll ruin the finish.
Follow the safety rules listed below when
working with solvents.
1. Read and follow all directions and
warnings on the solvent label.
2. Work only in a well ventilated area.
3. Do not work near any type of open
flame (e.g., pilot lights, kerosene
heaters, and so on).
4. DO NOT smoke while working with
flammable material.
5. Paper towels from the cleaning process
are extremely combustible. Dispose of
waste towels so they do not create a
fire hazard.
Site Considerations
FLOOR LOAD
Your G1021 Planer represents a relatively large
weight load in a small footprint. Most commercial
floors are suitable for the Model G1021. Some
residential floors may require additional support
to accommodate both machine and operator.
WORKING CLEARANCES
Working clearances can be thought of as the distances between machines and obstacles that
allow safe operation of every machine without
limitation. Consider existing and anticipated
machine needs, size of material to be processed
through each machine, and space for auxiliary
stands and/or work tables. Also consider the relative position of each machine to one another for
efficient material handling. Be sure to allow yourself sufficient room to safely run your machines in
any foreseeable operation.
LIGHTING AND OUTLETS
Lighting should be bright enough to eliminate
shadow and prevent eye strain. Electrical circuits
should be dedicated or large enough to handle
combined motor amp loads. Outlets should be
located near each machine so power or extension cords are not obstructing high-traffic areas.
Be sure to observe local electrical codes for proper installation of new lighting, outlets, or circuits.
Make your shop “child safe”. Ensure that
your workplace is inaccessible to youngsters by closing and locking all entrances
when you are away. Never allow visitors in
your shop when assembling, adjusting or
operating equipment.
Many of the solvents commonly used to
clean machinery can be highly flammable,
and toxic when inhaled or ingested. Always
work in well-ventilated areas far from potential ignition sources when dealing with solvents. Use care when disposing of waste
rags and towels to be sure they do not create fire or environmental hazards. Keep children and animals safely away when cleaning and assembling this machine.
WARNING
CAUTION
CAUTION
-12- G1021 15" Planer
SECTION 4: ASSEMBLY
Overview
Most of your G1021 Planer has been assembled
at the factory, but some parts must be assembled
or installed after delivery. We have organized the
assembly process into steps. Please follow along
in the order presented here.
TOOLS REQUIRED: Most of the tools required
for assembly are included with the planer.
However, you will also need a Phillips
®
and regular screwdriver as well as feeler gauge for adjustments later on.
Optional Stand
To begin stand assembly, keep all the stand parts
within easy reach. To ease assembly, build the
stand upside down on a bench and then place it
upright on the floor.
1. Place the stand top upside down on your
bench.
2. Attach each of the four legs to the stand top
with carriage bolts, washers and nuts provided. Do not over tighten. The legs attach to the
outside of the stand top. See Figure 3.
3. Attach each of the four braces to the stand
legs with carriage bolts, washers and nuts
provided. Do not over tighten. The braces
attach to the inside of the legs. See Figure 2.
4. Flip the stand right side up and place on the
floor. Check to see if the stand is symmetrical
from two adjacent sides. Adjust if necessary
and securely tighten all nuts.
Figure 2. Stand crossbracing in place.
Figure 3. Fully assembled stand.
G1021 15" Planer
-13-
Planer Unit
TO MOUNT THE PLANER:
1. Using the lifting handles shown in Figure 4,
place the planer on the stand and align the
four holes in the base over the four mounting
holes in the stand.
2. Secure the planer base to the stand with the
four hex bolts, nuts, washer and fender washers provided.
Starter Switch
The thermally protected, magnetic switch protects the motor from overload and the operator in
case power is interrupted. If power is interrupted,
the planer will not turn on when power resumes
without first pressing the ON button.
The switch must be secured to the planer unit.
The cap screws used for this purpose are already
partially screwed in.
1. Unscrew the cap screws from the planer body
for mounting the switch. See Figure 5.
2. Support the switch and screw the cap screws
back in.
To connect the switch power leads to the motor:
1. Remove the motor junction box cover and slip
the power cord through the cable clamp.
Secure the cable clamp with a screwdriver.
2. Attach the two power leads to the motor terminals according to the wiring diagram supplied with this manual.
3. Attach the grounding terminal (green wire) to
the motor frame via the ground screw located
inside the junction box.
4. Re-attach the motor junction box cover.
Lifting Handles
This planer is relatively heavy and awkward
to handle. We strongly recommend that you
get assistance. It will require at least two
people to lift the planer onto the stand.
Lifting without ample assistance could
result in serious injury and/or damage to
your machine. The planer unit may also be
unstable until it is permanently mounted to
the stand. Use care so the planer unit does
not slide or tip. If placing the planer on a
shop-built stand, ensure that the stand is
stable and designed to carry the weight of
the planer. Always bolt the planer to any
stand including a shop-built stand.
Figure 4. Location of lifting handles.
Figure 5. Starter switch attachment.
Cap Screws
CAUTION
-14- G1021 15" Planer
Handwheel
Planer knives are dangerously sharp. Use
extreme caution when working near cutting
surfaces. Failure to exercise care while
working near knives could result in severe
injury.
The handwheel is used to raise and lower the
planer table. Each complete revolution raises the
table
5
⁄
32" (4mm).
TO MOUNT THE HANDWHEEL:
1. Place the handwheel over the keyed shaft on
the planer body. Make sure the key on the
shaft and the keyway on the handwheel line
up. The handwheel shaft is at the front right of
the planer. See Figure 6.
2. Press the direction scale over the keyed shaft
so it fits into the depression in the top of the
handwheel.
3. Secure the handwheel with the 10mm - 1.25
hex nut and washer provided.
Figure 6. Handwheel attachment.
Knife Setting Jig
The knife setting jig has been provided to make
knife setting quick and easy. See Figure 7.
TO ASSEMBLE THE KNIFE SETTING JIG:
1. Snap one of the E-clips over the notch on one
end of the knife setting rod.
2. Slide the cast aluminum knife setting jig
brackets onto the rod.
3. Snap the other E-clip onto the notch at the
other end of the knife setting jig rod.
Figure 7. Knife setting jig components.
E-clip
Jig Rod
Jig Bracket
CAUTION
G1021 15" Planer -15-
Extension Rollers
The extension rollers can be attached now, but it
may be easier to make all the necessary adjustments to the planer before attaching them.
TO ATTACH THE EXTENSION ROLLERS:
1. Use the hex bolts and washers to mount the
extension rollers. See Figure 8. Ensure that
the top of the rollers are above the extension
roller frame.
2. Finger-tighten the mounting bolts for now.
Alignment of the extension rollers with the
table surface will be covered in the
Adjustment Section.
Figure 8. Extension roller attachment points.
Height Adjust
Setscrew
Mounting Bolt
Dust Port
The G1021 Planer features a 4" dust port for use
with a dust collection system.
As with the extension rollers, you may find it
more convenient to attach the dust port after
making adjustments to the planer.
TO ATTACH THE DUST PORT:
1. Fit the dust port over the planer upper cover.
Line up the mounting holes.
2. Use three M6 - 1.0 x 12mm hex bolts and
nuts and six washers to secure the dust port
to the planer upper cover. See Figure 9.
3. Use three M6 - 1.0 x 12mm cap screws and
lock washers to secure the dust port to the
planer body.
Figure 9. Dust port assembly.
Mounting Bolt
Dust Port
Upper Cover
DO NOT attach the dust hood if you do not
intend to connect the Model G1021 to a dust
collection system. Accumulated wood chips
could cause a malfunction, resulting in personal injury or damage to the planer.
CAUTION
-16- G1021 15" Planer
SECTION 5: ADJUSTMENTS
Overview
Once assembly has been completed, your G1021
15" Planer requires just a few adjustments to
ready it for use in your shop.
Many adjustments have already been made at
the factory, yet we recommend you familiarize
yourself with all of the following procedures to
gain a better understanding of the Planer’s construction and operation.
General control and adjustment locations are
shown in Figure 10.
A. The switch is thermally protected and mag-
netically controlled and features push buttons to turn the planer on and off.
B. The handwheel raises and lowers the table
and controls the depth of cut. Turning the
handwheel clockwise raises the table and
counter-clockwise lowers the table.
C. The bed rollers ease stock movement
through the planer and are adjustable.
D. The three position feed rate change knob
shifts planer feed speed from neutral to 16
and 20 feet per minute.
E. The table lock knob secures the table in a
fixed position.
A
B
C
D
E
Figure 10. Overview of planer adjustment controls.
G1021 15" Planer -17-
Gauge Block
Before attempting any table adjustments, you will
need to construct a gauge block. See Figure 11.
A larger gauge block diagram is also included at
the end of the manual for your convenience.
Precision adjustments later on require accuracy
when milling the gauge block. Do not use com-
mon 2x4 material. Use maple or similar type of
hardwood. Do not use the planer during the
milling process since the gauge block is needed
first to check and make planer adjustments.
Using a magnetic dial indicator is a good alternative to constructing a gauge block. Use the dial
indicator whenever the instructions call for use of
the gauge block and/or feeler gauge. Refer to the
current Grizzly catalog for dial indicators.
Table Adjustment
To plane stock perfectly square, it is important
that the table is parallel to the cutterhead.
TO CHECK TABLE PARALLELISM:
1. Place the gauge block on the table under one
end of the cutterhead.
2. Turn the handwheel to raise the table until the
block barely touches the cutterhead body.
The block should not be touching the knives.
See Figure 12.
3. Slide the block toward the opposite side of
the cutterhead. Use a feeler gauge to measure the width of the gap, if any, between the
top of the block and the bottom of the cutterhead. If there is a gap, make a note, reading
the distance from the feeler gauge.
4. If the block wedges tightly between the table
and cutterhead when shifting from one side to
the other, repeat steps 1 through 3 above, but
start from the opposite end of the cutterhead.
Figure 11. Guide block specifications.
DO NOT make adjustments while the planer
is running. Ensure that the switch is off,
power is disconnected and moving parts
have stopped before making adjustments.
Failure to comply could result in serious
injury or electrical shock hazard.
Figure 12. Guide block indicates parallelism.
If the gap difference from one side to the other is
equal to or less than 0.004", no further adjustment is necessary.
WARNING
-18- G1021 15" Planer
Figure 13 Cap screws for column adjustment.
If the gap difference from one side to the other is
greater than 0.004", but less than 0.016", go to
step 5.
If the gap difference from one side to the other is
greater than 0.016", the table raising chain under
the planer base will need to be adjusted. Please
call our Customer Service number for chain
adjustment instructions.
To adjust for gap differences of less than 0.016":
1. Determine which side of the table must be
raised to correct the gap.
2. Locate the two cap screws in the table cast-
ing for each of the columns. See Figure 13.
Loosen both sets of cap screws for each column on the side you wish to adjust.
3. Push down or pull up the table in the desired
direction. Hold the table in position and
retighten the cap screws.
4. Recheck the table to cutterhead parallelism
again. Repeat steps 1 through 7 until the
deviation is less than 0.004".
Lock Knob
Loosen these cap
screws to micro adjust
the table height
Knife Inspection
The Model G1021 Planer has a three-knife cutterhead. The cutterhead is located in the head
casting and rotates on two sealed bearings. No
lubrication is needed for the life of the bearings.
Because of normal use and wear, the knives
must be periodically sharpened, replaced or
adjusted. Adjustment from the factory must also
be checked prior to use due to possible movement during shipment.
TO INSPECT THE KNIVES:
1. Lower the table and place the gauge block
under one end of the cutterhead.
2. Carefully turn the cutterhead until the first
knife is at bottom dead center. Raise the table
until the knife barely touches the top of the
gauge block. Rock the cutterhead over the
gauge block as you raise or lower the table to
determine bottom dead center.
3. Slide the gauge block to the opposite side of
the cutterhead and check the same knife,
rocking back and forth to determine bottom
dead center. If the knife does not contact the
gauge block, use a feeler gauge to determine
the difference between one side and the
other. See Figure 14. Again, rock the cutter-
head back and forth over the gauge block and
feeler gauge.
Planer knives are dangerously sharp. Use
extreme caution when inspecting, removing, sharpening, or replacing knives into the
cutterhead. Substantial risk of injury!
WARNING
G1021 15" Planer -19-
Knife Setting
4. If the knife bottoms out on the gauge block,
repeat steps 1, 2 and 3, but start on the opposite side of the cutterhead.
5. The variation between one side and the other
should not be greater than 0.004". Repeat
steps 1 through 4 on the other two knives.
Again, the variation between all three knives
should not be greater than 0.004"
Once you have completed inspection on all three
knives, you will able to determine whether or not
there is a need to adjust the knives in the cutterhead. The next set of instructions will address the
process of setting the knives.
Figure 14. Adjusting knife height.
Figure 15. Proper knife setting jig placement.
The process of setting the knives in the cutterhead will come into play whenever you sharpen
or replace, or after determining that setting is
necessary during the initial setup.
The knives are locked into the cutterhead with
wedge type gibs. Springs under each knife provide an upward pressure to help ease the setting
process.
TO SET THE KNIVES:
1. Remove the upper cover to expose the cutterhead.
2. Loosen the gib bolts securing the first knife
just enough until the knife pushes upward.
3. Place the knife setting jig over the knife on
the cutterhead as shown in Figure 15. The
knife setting jig will push the knife into position in the cutterhead.
When making adjustments, all three knives
must be adjusted the same. Do not adjust
one knife without adjusting the others as
well. Improper knife height adjustment can
result in damage to knives, poor planer performance and possible operator injury.
CAUTION
-20- G1021 15" Planer
Chip Breaker
3. Place the gauge block on the table directly
under the cutterhead. Using a one millimeter
(0.05") feeler gauge between the gauge
block and the cutterhead, raise the table
until one of the knives just touches the feeler gauge. Rotate the cutterhead manually to
be sure the knife is at bottom dead center.
4. Lock the table by tightening the table lock
knobs.
5. Remove the feeler gauge and slide the
gauge block under the chip breaker. See
Figure 17. The chip breaker should just
touch the top of the gauge block. Slide the
gauge block to the opposite end of the chip
breaker and check it in the same manner.
Figure 16. Tightening knives in cutterhead.
4. While holding the position of the knife setting
jig, tighten the gib bolts down again in the
cutterhead. Tighten the bolts evenly from the
outside, working toward the middle. See
Figure 16.
5. Repeat these steps for the other two knives.
The chip breaker is located on the top side of the
planer and extends down around the front of the
cutterhead. Its function is to prevent tear-out or
deep, unregulated gouging as the knives remove
material. The chip breaker works by breaking the
woodchips as they are being cut by the cutterhead. The chip breaker also deflects and expels
the woodchips away from the surface of the
board and out of the planer.
TO ADJUST THE CHIPBREAKER:
1. Disconnect the machine from the power
source, remove the dust hood and lower the
table.
2. Ensure that the knives are properly adjusted.
Figure 17. Location of chip breaker assembly.
Gauge Block
Chipbreaker
Infeed Roller
Cutterhead
DO NOT make adjustments while the planer
is running. Ensure that the switch is off,
power is disconnected and moving parts
have stopped before making adjustments.
Failure to ensure that power is disconnected could result in serious injury or electrical
shock hazard.
WARNING
G1021 15" Planer -21-
Feed Roller Height
Figure 18. Chip breaker height adjustment.
6. If an adjustment is necessary, loosen the
locknuts and turn the setscrews. See Figure
18. Stop turning when the bottom of the chip
breaker just touches the gauge block.
7. Re-tighten both locknuts
8. Replace the exhaust hood.
The infeed and outfeed rollers propel the lumber
through the planer. The rollers also press the
lumber flat against the planer table.
Set the infeed and outfeed rollers 0.040" below
the knife edge at bottom dead center.
TO CHECK ROLLER HEIGHT:
1. Disconnect the machine from the power
source.
2. Lower the table so the gauge block will fit
under one side of the infeed roller.
3. Raise the table until the gauge block barely
touches the infeed roller. See Figure 19. Do
not change position of the table.
4. Slide the gauge block over so it is under the
edge of one of the knives. Turn the cutterhead until one of the knives is at bottom
dead center over the gauge block.
5. Measure the clearance between the top of
the gauge block and the edge of the knife
with a feeler gauge. Note the measurement
indicated on the feeler gauge.
Figure 19. Feed roller height inspection.
Chipbreaker
Infeed Roller
Anti-Kickback
Fingers
-22- G1021 15" Planer
6. Repeat steps 1-5 for the opposite side of the
roller. Repeat all steps for the outfeed roller.
Feeler gauge measurement should equal 0.040".
TO ADJUST ROLLER HEIGHT:
1. Remove the drive chain cover to access the
roller adjustments on the drive chain side of
the planer. A single socket head cap screw
holds the drive chain cover on. Belt side
adjustments are already accessible.
2. Loosen the roller adjustment check nuts and
turn the roller height setscrews to change
the height of the roller as needed. See
Figure 20.
3. Check roller height according to the above
instructions. Continue turning the setscrew
until the roller is properly adjusted.
4. When the roller is set in the correct position,
re-tighten the check nuts you loosened in
Step 2 above.
5. Check your settings one last time and repeat
steps 1-4 if necessary.
Figure 20. Feed roller height adjustment.
To be effective, the infeed and outfeed rollers
must put pressure on the workpiece as it feeds
through the planer. Too little pressure results in
slipping boards, too much pressure results in
jamming.
Experiment with the best pressure settings for
your work situations. Some rough cut lumber will
feed through fine with relatively few problems,
while other lumber will have more difficulty.
Adjusting roller pressure does not affect height.
TO ADJUST ROLLER PRESSURE:
1. Disconnect the machine from the power
source.
2. Ensure that knives and feed rollers are set
correctly.
3. Unscrew the four large pressure setscrews
on top of the planer body. See Figure 21.
Feed Roller Pressure
Figure 21. Roller pressure adjustment.
Light Pressure
Setscrew
Regular
Pressure
Setscrews
G1021 15" Planer -23-
Bed Rollers
Figure 22. Roller pressure assembly.
Pressure Setscrew
Pressure Spring
Roller
Check Nut
Height Setscrew
4. Remove the springs that are in the holes left
by the setscrews. See Figure 22.
5. Check for any dirt or grit. Clean the springs
and setscrews if dirty.
6. Screw the three regular-pressure setscrews
back in until they are flush with the top of the
head casting.
7. Screw the light pressure setscrew until it is
approximately
1
⁄
4" above the head casting.
The feed chain applies additional tension to
the right side of the outfeed roller, so the
pressure added by the setscrew need not be
as high.
TO ADJUST THE BED ROLLERS:
1. Ensure that power is disconnected and lay a
high quality straightedge across both table
rollers. Use a try square to keep the straightedge perpendicular to the table.
2. Use a feeler gauge to measure the clearance between the bottom of the straight
edge and the table. Ideal clearance is
between 0.002" and 0.005". Measure in several places. This measurement must be con-
sistent across the entire table. See Figure
23.
Figure 23. Inspecting bed roller height.
3. Loosen the setscrews on both sides of each
bed roller. See Figure 24.
4. Use a wrench to turn the eccentric shafts
which adjust roller height. Stop turning when
the table rollers are at the proper height.
5. Once your roller heights are correct, re-tighten all the setscrews.
6. Check the height of the table rollers. Repeat
steps 1-5 until the bed rollers are properly
set. Spin the bed rollers to ensure free movement.
The bed rollers ease stock movement through
the planer. The height of the bed rollers will vary
depending on the types of wood you will be planing. When planing rough stock, set the rollers
slightly high to keep the lumber from dragging
along the bed. However, snipe may be unavoidable. Smooth lumber should be planed with the
rollers set just above the plane of the table. This
will minimize snipe.
-24- G1021 15" Planer
Chip Deflector
Figure 24. Adjusting bed roller height.
Setscrews
Setscrews
The chip deflector keeps chips from falling onto
the outfeed roller. It is the orange plastic plate
located under the top cover.
The beveled edge of the chip deflector should be
about
1
⁄8" - 1⁄4" from the knife edge. Carefully
rotate the cutterhead to gauge the distance
between the chip deflector and the knives. Adjust
if necessary. However, if the chip deflector is set
too close to the knives, the rotating cutterhead
may pull it in and destroy it.
TO ADJUST THE CHIP DEFLECTOR:
1. Disconnect the machine from the power
source and remove the planer’s upper cover.
2. Loosen the three deflector mounting bolts.
See Figure 25. Make sure the beveled edge
of the deflector faces the cutterhead.
3. Move the deflector until its edge is approximately
1
⁄8" - 1⁄4" from the tip of the cutting
knives. Push down on the deflector with a
wooden stick to check if it will touch the
knives. Cautiously rotate the cutterhead to
ensure clearance. Do Not touch the knives -
severe cuts may result.
4. Re-tighten the chip deflector mounting bolts
and re-mount the upper cover to the planer.
Figure 25. Chip deflector access.
Chip Deflector
Chipbreaker
Cutterhead
Mounting Bolts
G1021 15" Planer -25-
The Model G1021 Planer provides an anti-kickback safety feature. The anti-kickback fingers
hang from a rod suspended across the front of
the cutterhead casting. The anti-kickback fingers
should be inspected regularly. Check the fingers
to ensure that they swing freely and easily. See
Figure 26.
Figure 26. Anti-kickback assembly.
The belt and pulley assembly are on the left side
of the planer. The belts transfer power from the
motor to the cutterhead and then through the
gearbox to the feed rollers. Remove the belt
cover by unscrewing the four flange bolts holding
the cover in place.
TO INSPECT/ADJUST THE PULLEYS:
Place a metal ruler across the pulleys to check
alignment. The pulleys are aligned if the ruler
crosses them evenly. See Figure 27.
If the pulleys are out of alignment:
1. Loosen the bolts that hold the motor to the
motor mount bracket.
2. Adjust the position of the motor until the pulleys are in line.
3. Re-tighten all bolts.
Figure 27. Checking pulley alignment.
DO NOT apply oil or other lubricants to the
anti-kickback fingers. Oil or grease will
attract dust and restrict free movement of
the fingers, which could result in damage to
your workpiece, the planer, or possibly serious injury to the operator or others in the
workplace. Call our Customer Service number if the anti-kickback fingers do not move
freely when setting up your planer. DO NOT
attempt to use the planer if the anti-kickback fingers are not operating properly.
BeltsAnti-Kickback
WARNING
-26- G1021 15" Planer
TO CHECK BELT TENSION:
Squeeze the V-Belts at their midpoints with mod-
erate finger pressure. You should be able to
deflect each V-Belt about 3/4". Belts will rarely be
too tight, but will sometimes be too loose.
To adjust belt tension:
1. Loosen the two bolts that hold the motor/pulley assembly to the planer.
2. Insert a wooden lever of suitable strength
and pry the motor up to increase belt ten-
sion. See Figure 28.
3. Maintain lever position and check belt tension. Re-adjust if necessary.
4. Tighten the bolts and check belt tension
again. Repeat steps 1-3 as necessary.
5. Ensure that the pulleys are still in alignment.
Figure 28. Adjusting belt tension.
The gearbox is located just behind the handwheel on the right side of the planer. The gearbox
transfers power from the belt-driven cutterhead to
the power feed rollers. The two-speed transmission is controlled by a push/pull lever on the right
side of the planer. When engaged, the power
feed rollers will move lumber through the planer
at either 16 or 20 feet-per-minute. The center
lever position is neutral.
TO INSPECT THE GEARBOX:
1. Loosen the socket head cap screw on the
gearbox cover. Gently pull the cover off the
roll pins that hold it in place.
2. Check the bolts holding the sprockets in
place. Inspect the drive chains to ensure that
the cotter pins are in place. Replace the pins
if necessary. See Figure 29.
Figure 29. Location of sprocket bolts.
Loosen these bolts before
adjusting belt tension.
DO NOT make adjustments while the planer
is running. Ensure that the switch is off,
power is disconnected and moving parts
have stopped before making adjustments.
Failure to comply could result in serious
injury.
Gearbox
WARNING
G1021 15" Planer -27-
3. The oil level in the gearbox should be to the
bottom of the filler plug near the top of the
gearbox. Top off with 80-90 wt. gear oil if
necessary. Use 50 wt. motor oil if you are
working in an unheated winter shop. See
Figure 30.
4. Drain and replace the oil yearly. See Figure
31.
Figure 30. Location of gearbox fill plug.
Figure 31. Location of gearbox drain plug.
Fill Plug
Drain Plug
N. EXTENSION ROLLERS
If you elected to wait to install the extension
rollers during the assembly process, install the
extension rollers now. Refer to the Assembly
Section.
To adjust the extension rollers:
1. Lower the table and position a flat board, so
it lays on the table and suspends over one of
the extension rollers. See Figure 32.
2. Adjust the tightness of the mounting bolts
and the depth of the setscrews on the extension roller body. Various combinations of
loosening and/or tightening the setscrews
and bolts will level the extension rollers with
the table. When the outermost extension
roller touches the bottom of the board, stop
adjusting and secure the extension roller to
the body.
3. Repeat steps 1-3 for the other extension
roller assembly.
Figure 32. Inspecting extension roller height.
Extension Rollers
-28-
G1021 15" Planer
The thickness scale, located below the handwheel,
can be adjusted for accuracy. However, the
machine must be operated to adjust the thickness scale. Follow the directions in the
Operations Section for test running before
attempting to make these adjustments.
TO ADJUST THE SCALE:
1. Adjust the table height to the approximate
thickness of your test lumber. Measure the
lumber with calipers to determine its exact
thickness.
2. Move the table to
1
/16" under the thickness of
your lumber and feed your test board through
the planer.
3. Turn the handwheel one half rotation and run
the board through once more. Turn the board
over and repeat.
Figure 33
Adjustment
Screw
4. Re-measure the board and compare your
results with the scale. If there is a discrepancy, loosen the scale adjustment screw and
correct the position. See Figure 33.
Thickness Scale
NOTES
G1021 15" Planer
-29-
7. Do not use boards with loose knots, splits,
crossgrain or other defects. They can damage the machine and cause injury.
8. Keep your work area clear.
9. Wood with more than 20% water content or
wood exposed to rain, ice, or snow will plane
poorly and cause excess wear to the knives
and motor. Excessive moisture will also hasten rust and corrosion.
10. Read as much as possible about planing
procedures. Alternative publications present
more wood specific planing requirements.
They will often share tips on safety and more
efficient ways to operate your planer.
In addition to the safety issues discussed earlier
in this manual, there are a number of safety
issues that relate directly to the operation of the
planer. Keep in mind that these are not all-inclusive. Work situations, wood types, and other variables that differ from shop to shop must be considered in order to operate this planer safely.
Always consider safety and common sense first
when operating this or other machinery.
1. Always inspect lumber for defects (warping,
cupping, twisting, etc.). Do not use lumber of
questionable quality.
2. Check lumber for nails, staples, imbedded
gravel, etc. before planing.
3. Use the full width of the planer. Alternate
between the left, the right and the middle
when feeding lumber into the planer. Your
knives will remain sharp much longer.
4. Remove glues, epoxies and other foreign
materials before planing lumber.
5. NEVER attempt to plane laminates, particle
boards, plastics or other man-made materials.
6. Plane wood with the grain. NEVER plane
end-grain lumber.
Before attempting to adjust table height, loosen
the two black knobs on the left side of the table.
After table height is adjusted and the table height
is set, tighten the two black knobs back down
again. See Figure 34.
Figure 34. Table lock knob.
The Model G1021 15" Planer is a powerful
woodworking machine, designed and constructed for professional-quality applications. Because of its powerful motor and
razor-sharp knives, the Model G1021 is
inherently dangerous and should be operated with considerable caution and respect.
Failure to do so could result in damage to
the machine, or severe injury to the operator or others in the work area.
SECTION 6: Operations
Overview
Table Locks
WARNING
-30- G1021 15" Planer
Crank the handwheel to raise or lower the table
according to the desired workpiece thickness.
Each complete revolution of the handwheel
moves the table by
5
/32
" (4mm). Make sure the
height scale is properly adjusted.
With the limiting clip installed, you cannot cut
more than 1/8" in a single pass. While cutting this
much material is possible, it is not recommended.
Take it slow and easy. The quality of your work
will be better and your planer will last longer.
The power feed features two feed rates; 16 FPM
and 20 FPM. When running the machine, the
operator can control the feed speed by moving
the feed control knob. Moving the knob toward
the machine produces the 20 FPM feed speed,
away from the machine produces 16 FPM and a
center position places the gear box in neutral.
Figure 35.
Figure 35. Feed speed adjustment knob.
The Model G1021 is equipped with a depth limiter – located on the bottom of the cutterhead
casting just under the nameplate. See Figure 36.
The depth limiter controls maximum depth of cut
to
1
/8".
Figure 36. Location of depth limiter.
Depth Limiter
The feed rate should be set while the planer
is running but before feeding lumber into it.
DO NOT attempt to change speeds after the
cutting operation has begun.
To avoid mechanical damage to the planer,
do not remove the depth limiter.
Power Feed Handwheel
Depth Limiter
If you take a cut that is too large, the planer
will bog down noticeably. The motor may
even stall. If this happens, turn off the
power immediately, lower the table, and
remove your workpiece. Re-adjust your
table to allow a lesser cut and repeat your
operation.
CAUTION
CAUTION
CAUTION
G1021 15" Planer -31-
Once the assembly is complete and the adjustments are done to your satisfaction, you are
ready to test the machine.
Turn on the power supply at the main panel.
Press the START button. Make sure that your finger is poised on the STOP button, just in case
there is a problem. The planer should run
smoothly, with little or no vibration or rubbing
noises. Strange or unnatural noises should be
investigated and corrected before operating the
machine further.
Test Run
DO NOT attempt to investigate or adjust the
machine while it is running. Wait until the
machine is turned off, unplugged and all
working parts have come to a rest before
you do anything!
Always wear ANSI-approved safety glasses
or goggles when operating equipment —
particularly when testing new tools or
machinery. Do not allow visitors into your
workshop when testing or operating equipment.
If noises occur that cannot be found by visual
inspection, feel free to contact our service department for help.
The species of wood, as well as its condition,
have a dramatic effect on planing ability. The
harder the wood (as illustrated by its shear
strength), the more difficult it will be to plane. A
brief listing of common hard and soft woods in
relation to their shear strengths and planing difficulty is listed below.
Type Shear (PSI)
Black Locust 2,480
Sugar Maple 2,330
Pecan Hickory 2,080
White Oak 2,000
White Ash 1,950
Black Cherry 1,700
American Elm 1,510
Black Walnut 1,370
Red Alder 1,080
Basswood 980
Cottonwood 930
Increasing
Difficulty
Figure 37. Common hardwood shear strengths.
Type Shear (PSI)
Western Larch 1,410
Tamarack 1,280
Douglas Fir 1,160
Alaska Cedar 1,130
Sitka Spruce 1,150
Sugar Pine 1,050
Cypress 1,000
Redwood (OG) 940
Red Cedar 860
White Pine 850
Balsam Fir 710
Increasing
Difficulty
Figure 38. Common softwood shear strengths.
Wood Species
WARNING
WARNING
-32-
G1021 15" Planer
Planing Difficulties
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 - usually a result of cutting
against the grain, or planing wood with knots or
excessive amount of cross grain. Chipped grain
can also be caused by dull knives or misaligned
chipbreaker. Often, chipped grain can be avoided
by slowing down the feed rate and by taking shallow cuts. If those options do not work, inspect
your lumber and determine if its grain pattern is
causing the problem. If the wood does not show
substantial crossgrain, inspect your knives for
sharpness and inspect the chipbreaker for proper
alignment. See the Adjustment Section.
Fuzzy Grain - Usually caused by surfacing lum-
ber with too high a moisture content. Sometimes
fuzzy grain is a characteristic of some woods,
such as basswood. Fuzzy grain can also be
caused by dull knives or an incorrect grinding
bevel. Check with a moisture meter. If moisture is
greater than 20%, sticker the wood and allow to
dry. Otherwise, inspect knife condition.
Glossy Surface - Usually caused by dull knives
taking shallow cuts at a slow feed speed. Surface
gloss will usually be accompanied by overheating. Often, lumber will be scorched and eventually, damage to knives will occur. If knives are
sharp on inspection, increase feed speed and/or
cutting depth.
Snipe - Occurs when board ends have more
material removed than the rest of the board.
Usually caused when one or both of the bed
rollers are set too high. Can also be caused by
the chipbreaker or pressure bar being set too
high. However, small amount of snipe is
inevitable.
Snipe can be minimized by proper adjustment of
the planer’s components, but complete removal
of snipe is extremely unlikely. More likely, you will
be able to reduce it to a tolerance of .002".
If snipe under that level is a problem, consider
planing lumber longer than your intended work
length and cut off the excess after planing is completed.
Uneven Knife Marks - Usually an indication that
cutterhead bearings are beginning to show signs
of deterioration. Uneven knife marks can also
occur when the chipbreaker is set too high.
Inspect cutterhead bearings if re-adjustment of
the chipbreaker fails to remedy the situation.
Chatter Marks - Usually caused by incorrect
chipbreaker and pressure bar setting heights.
Chatter marks can also be caused by running a
narrow wood piece through the planer at either
the right or left end of the cutterhead. Chatter, like
uneven knife marks, will show in the form of a
“washboard” look. Chatter marks are more likely
to be inconsistent in appearance than uneven
knife marks.
Wavy Surface - Caused by poor knife height
adjustment, wavy surface appears when one
knife is taking deeper cuts than the rest of the
knives. Remedy by re-setting the knives to a tolerance of ± .001".
Pitch & Glue Build-up - Glue and resin build-up
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 as well as
uneven knife marks and chatter.
Chip Marks - Occur when chips aren’t properly
expelled from the cutterhead. The knives catch
the chips and drag them across the lumber being
planed. Chips tend to be random and non-uniform (as compared to chipped grain). Can be
caused by exhaust blockage or too much room
between the cutterhead and chip deflector. Using
a dust collection system in combination with the
planer can help reduce chip marks. Inspect the
chip deflector and re-adjust as described earlier
in the text.
G1021 15" Planer -33-
Figure 39. Recommended sharpening angles.
SECTION 7: MAINTENANCE
Make a habit of inspecting your planer each time
you use it. Check for the following conditions and
repair or replace when necessary.
1. Loose mounting bolts.
2. Worn switch.
3. Worn or damaged cords and plugs.
4. Damaged V-belts.
5. Any other condition that could hamper the
safe operation of this machine.
General
Knives
We recommend that dull knives be taken to a professional knife sharpener. Improperly sharpened
knives can cause a number of defects to lumber
and put unnecessary load on the motor and drive
systems. If you can avoid sharpening knives
yourself, allow them to be handled by a trained
sharpener.
If you must do the job yourself, take note of the
following information.
You will be dealing with a cutting angle of 35
degrees and a grinding angle of 35 degrees. See
Figure 39. The grinding angle has been deter-
mined by the factory to be the best compromise
for planing a wide variety of wood types. In most
cases, that angle will produce excellent work. If
you choose to change the angle of your bevel, be
sure to consult with a trained sharpener, or with a
reference book before you commit to changing
the angle of bevel.
Table
The table and other non-painted surfaces on the
Model G1021 should be protected against rust
and pitting. Wiping the table clean after every use
ensures that moisture from wood dust isn’t
allowed to trap moisture against bare metal surfaces.
Some woodworkers recommend using automotive paste wax on exposed steel and cast iron
surfaces. The wax provides a layer of protection,
as well as reducing friction between lumber and
the table, making cuts faster and smoother. Avoid
waxes that contain silicone or other synthetic
ingredients. These materials can find their way
into lumber that’s being worked, and can make
staining and finishing difficult. If you use paste
wax, make sure that it’s 100% Carnauba wax.
-34- G1021 15" Planer
Lubrication
The Model G1033 features factory-sealed bearings. A sealed bearing requires no lubrication
during its lifetime. Should a bearing fail, your
planer will probably develop a noticeable rumble,
which will increase when the machine is put
under load. If allowed to get worse, overheating
of the journal containing the bad bearing could
occur. If the bad bearing is not replaced, it will
eventually seize - possibly doing damage to other
parts of the machine. Bearings are standard
sizes and can be replaced through Grizzly.
Proper lubrication of other components of the
Model G1033 are essential for long life and trouble-free operation. Below is a list of components
that require periodic lubrication. Schedules are
based on daily use. Adjust accordingly for your
level of use.
Columns/Lead Screws - The four columns
should be lubricated weekly with light oil.
Unfasten dust covers to gain access. The four
lead screws should be lubricated with general
purpose grease once a month.
Worm Gear - The worn gear should be inspect-
ed monthly and lubricated when needed.
Remove the worm gear box to inspect. See parts
diagram for location.
Chain - The table height adjustment chain should
be inspected monthly and lubricated when needed. A good quality bicycle chain lubricant works
well for periodic lubrication.
Gear Box - Gear box oil should be drained after
the first 20 hours of operation. See Figure 40.
Replace with 80W-90W gear oil. Inspect levels
periodically and change yearly. Replace gear oil
more frequently under heavy use. Fill until oil
reaches the top of the filler plug port for correct oil
level.
Drive Chain - The drive chain should be inspect-
ed and lubricated monthly. Check sprocket, chain
and cotter pin during inspection. Use a general
purpose grease. Some chains will have master
links instead of cotter pins.
Feed Rollers - Daily lubrication of feed rollers is
crucial to the operation of your planer. Lubricate
before start-up. Each end of each power feed
roller has an oiling port located on the top of the
head casting. See Figure 41. Apply a light oil,
making sure that the lubricant penetrates the
bearing.
Figure 40. Gearbox fill and drain points.
Figure 41. Feed roller lubrication points.
Fill
Drain
G1021 15" Planer -35-
Clean and lubricate the chain sprockets as needed. The gearbox oil should be checked before the
first use. It is full when oil begins dribbling out of
the fill hole. Oil should be replaced yearly. Use
80-90 Wt. gear oil in normal situations. Use 50 wt.
motor oil for unheated, winter shops. See
Adjustment Section.
The lead screws and columns should be wiped of
any grease and dust build up once a week. They
should be relubricated with light machine oil. See
Figure 42.
The infeed/outfeed pressure setscrews double as
lubrication ports for the rollers. Add 1-2 drops of
light machine oil to all ports before each use. See
Figures 43 and 44.
Figure 42. Lead Screw inside of column.
Lead Screw
Column
Figure 43. Lubrication ports on top of machine.
Lubrication Ports
Figure 44. Oiling lubrication ports.
Oil Can,
1-2 drops
-36- G1021 15" Planer
The following pages contain parts diagrams, parts
lists, general machine data and warranty/return
information for your Model G1021 Planer.
If you need parts or help in assembling your
machine, or if you need operational information,
we encourage you to call the Grizzly Industrial
Service Department. Our trained service technicians will be glad to help you.
If you have comments dealing specifically with
this manual, please write to our Bellingham,
Washington location using the address in the
Introduction. The specifications, drawings, and
photographs illustrated in this manual represent
the Model G1021 as supplied when the manual
was prepared. However, due to Grizzly’s policy of
continuous improvement, changes may be made
at any time with no obligation on the part of
Grizzly. Whenever possible, though, we send
manual updates to all owners of a particular tool
or machine. Should you receive one, add the new
information to this manual and keep it for reference.
We have included some important safety measures that are essential to this machine’s operation. While most safety measures are generally
universal, Grizzly reminds you that each workshop is different and safety rules should be con-
sidered as they apply to your specific situation.
We recommend you keep a copy of our current
catalog for complete information regarding
Grizzly's warranty and return policy. If you need
additional technical information relating to this
machine, or if you need general assistance or
replacement parts, please contact the Service
Department listed in Section 3: Introduction.
Additional information sources are necessary to
realize the full potential of this machine. Trade
journals, woodworking magazines, and your local
library are good places to start.
SECTION 8: CLOSURE
The Model G1021 was specifically designed
for wood cutting operations. DO NOT MODIFY AND/OR USE THIS PLANER FOR ANY
OTHER PURPOSE. Modifications or improper use of this tool will void the warranty. If
you are confused about any aspect of this
machine, DO NOT use it until you have
answered all your questions. Serious injury
may occur.
Like all power tools, there is danger associated with the Model G1021 15" Planer. Use
the tool with respect and caution to lessen
the possibility of mechanical damage or
operator injury. If normal safety precautions are overlooked or ignored. Serious
injury may occur.
Always wear ANSI-approved safety glasses
or goggles and hearing protection when
operating equipment — particularly when
testing new tools or machinery. Do not allow
visitors into your workshop when testing or
operating equipment. Serious injury may
occur.
WARNING
WARNING
WARNING
G1021 15" Planer -37-
This section covers the most common processing problems encountered in planing and what to do about
them. Do not make any adjustments until planer is unplugged and moving parts have come to a complete
stop.
TROUBLESHOOTING
SYMPTOM
Motor will not start.
Motor will not start; fuses or
circuit breakers blow.
Motor overheats.
Motor stalls (resulting in
blown fuses or tripped circuit).
Machine slows when operating.
Loud, repetitious noise coming from machine
Machine is loud when cutting. Overheats or bogs
down in the cut.
Infeed roller marks are left
on the workpiece.
Outfeed roller marks are left
on right side of workpiece.
Cannot control snipe.
Chip buildup on outfeed
roller.
Machine howls on startup.
Table moves down while
cutting.
POSSIBLE CAUSE
1. Low voltage.
2. Open circuit in motor or loose
connections.
1. Short circuit in line cord or plug.
2. Short circuit in motor or loose
connections.
3. Incorrect fuses or circuit breakers in power line.
1. Motor overloaded.
2. Air circulation through the motor
restricted.
1. Short circuit in motor or loose
connections.
2. Low voltage.
3. Incorrect fuses or circuit breakers in power line.
4. Motor overloaded.
1. Feed rate too high.
2. Depth of cut too great.
1. Pulley setscrews or keys are
missing or loose.
2. Motor fan is hitting the cover.
3. V-belt is defective
1. Excessive depth of cut.
2. Knives are dull
Depth of cut too shallow.
Too much spring tension on feed
roller.
Long or heavy board sags as it
enters and exits.
Chips working their way back
under the chip deflector.
Chip deflector too close to the
cutterhead.
Knives dull
CORRECTIVE ACTION
1. Check power line for proper voltage.
2. Inspect all lead connections on motor for loose or open connections.
1. Inspect cord or plug for damaged insulation and shorted wires.
2. Inspect all connections on motor for loose or shorted terminals or
worn insulation.
3. Install correct fuses or circuit breakers.
1. Reduce load on motor.
2. Clean out motor to provide normal air circulation.
1. Inspect connections on motor for loose or shorted terminals or
worn insulation.
2 Correct the low voltage conditions.
3. Install correct fuses or circuit breakers.
4. Reduce load on motor.
1. Feed workpiece slower.
2. Reduce depth of cut.
1. Inspect keys and setscrews. Replace or tighten if necessary.
2. Tighten fan or shim cover.
3. Replace V-belt. See Maintenance.
1. Decrease depth of cut.
2. Sharpen knives.
Increase depth of cut.
Refer to Feed Roller Pressure section for adjustment.
Lift up on unsupported end of board as it enters and exits cutterhead.
Lay duct tape over the mounting bolts along the outside edge to
seal any possible gaps.
Move back
1
/8" to 1/4" from the cutterhead.
Replace knives.
-38- G1021 15" Planer
SEE PAGE 42-43 FOR REFERENCE NUMBER LISTING
97
30
181
180
42
38
32
31
2
33
31A
40
179
170
103
178
104
41
180
166
35
34
25
27
2
22
105
2
28
192
102
101
174
175
100
151
157
156
155
154
163
162
177
160
161
159
168
87
88
167A
88
90-1
167
38
189
182
188
187
16
186
20
185
19
23
184
17
183
19
21
18
36
13
176
87
94
152
15
12
8
14
5
4
6
3
2
15
14
92
153
7
91
90
90-1
5
4
1
G1021 15" Planer -39-
43
48
83
145
146
43
79
44
80
80
146
78
145
43
78
79
144
70
46
44
49
69
50
190
52
53
82A
70
81
80
82
143
144
83
143
88
87
63
36
62
55
73
57
75
76
45
64
66
67
68
65
44
57
45
75
76
68-1
68-2
55
73
77
51
55
73
57
75
76
36
87
62
88
63
88A
89
88A
85
-40- G1021 15" Planer
SEE PAGE 41-42 FOR REFERENCE NUMBER LISTING
134
136
135
114
133
117
114
113
116B
120
119
111
114
123
125
122
121
127
132
128
131
129
88
87
114
116A
115
114
112
147
111
148
26
110
109
108
107
107
G1021 15" Planer -41-
SEE PAGE 41-42 FOR REFERENCE NUMBER LISTING
149
138
139
137
165A
138
150
193
194
139
173
140
99
164
138
139
106
195
172
196
191
141
142
-42- G1021 15" Planer
063 P1021063 LIFTING HANDLE
064 P1021064 BASE
065 P1021065 IDLER BRACKET
066 P1021066 SHAFT
067 P1021067 IDLER SPROCKET
068 PR02M SNAP RING 14mm
68-1 PW01M FLAT WASHER 8mm
68-2 PB07M HEX BOLT M8 - 1.25 x 25mm
69 P1021069 TABLE ROLLER
070 P608 BEARING 608 - 2RS
073 PR21M SNAP RING 35mm
075 PW04M FLAT WASHER 10mm
076 PN02M HEX NUT M10 - 1.5
077 P1021077 CHAIN
078 PSS04M SETSCREW M6 - 1.0 x 12mm
079 PSB02M CAP SCREW M6 - 1.0 x 20mm
080 P1021080 TABLE ROLLER SHAFT
081 PW01M FLAT WASHER 8mm
082 PB09M HEX BOLT M8 - 1.25 x 20mm
82A PSS14M SETSCREW M8 - 1.25 x 12mm
083 P1021083 ROLLER FRAME
085 P1021085 ROLLER
087 PB02M HEX BOLT M6 - 1.0 x 12mm
088 PW03M FLAT WASHER 6mm
88A P1021088A PLASTIC ROLLER BUSH
089 P1021089 ROLLER ROD
090 PSS11M SETSCREW M6 - 1.0 x 16mm
90-1 PN01M HEX NUT M6 - 1.0
091 PB09M HEX BOLT M8 - 1.25 x 20mm
092 P1021092 PLATE
094 PSS14M SETSCREW M8 - 1.25 x 12mm
097 P1021097 UPPER COVER
099 PRP07M ROLL PIN 6 x 20mm
100 P6205 BEARING 6205 - 2RS
101 PK41M KEY 8 x 8 x 40mm
102 P1021102 CUTTERHEAD
103 P1021103 SPRING
104 P1021104 GIB BOLT
105 P1021105 GIB
106 P1033099 CHAIN TENSIONER
107 P1021107 OIL PLUG
108 P1021108 OIL SEAL 28 x 40 x 8mm
109 P1021109 GEAR BOX
110 P1021110 GASKET
111 P6204 BEARING 6204 - 2RS
112 P1021112 GEAR
113 PSB02M CAP SCREW M6 - 1.0 x 20mm
114 P6201 BEARING 6201 - 2RS
115 P1021115 GEAR
Ref# Part# Description Ref# Part# Description
001 P1021001 PULLEY COVER
002 PFB01M FLANGE BOLT M6 - 1.0 x 12mm
003 P1021003 V-BELT, SET OF 3
004 PB07M HEX BOLT M8 - 1.25 x 25mm
005 P1021005 SPECIAL WASHER
006 PB13M HEX BOLT M10 - 1.5 x 80mm
007 P1021007 CUTTERHEAD PULLEY
008 P1021008 MOTOR PULLEY
012 P1021012 SPACER
013 P1021013 BELT HOUSING
014 PB14M HEX BOLT M10 - 1.5 x 35mm
015 PW04M FLAT WASHER 10mm
016 P1021016 MOTOR
017 P1021017 MOTOR PLATE
018 PB15M HEX BOLT M8 - 1.25 x 35mm
019 PW01M FLAT WASHER 8mm
020 PN03M HEX NUT M8 - 1.25
021 P1021021 COLUMN CAP
022 P1021022 HEAD CASTING
023 P1021023 CHIP DEFLECTOR
025 P1021025 TENSIONING SETSCREW
026 PSB05M CAP SCREW M8 - 1.25 x 50mm
027 PSS11M SETSCREW M6 - 1.0 x 16mm
028 P1021028 CHIP BREAKER SPRING
030 PN08M HEX NUT M10 - 1.25
031 PW04M FLAT WASHER 10mm
31A P1021031A DIRECTION SCALE
032 P1021032 HANDLE
033 P1021033 HEIGHT HANDWHEEL
034 PR22M SNAP RING 38mm
035 P1021035 BUSHING
036 PSS13M SETSCREW M10 - 1.5 x 12mm
038 PSB26M CAP SCREW M6 - 1.0 x 12mm
040 G4572 2HP MAGNETIC SWITCH
041 PS08 PHLP HD SCREW 10 - 24 x
3
/4"
042 P1021042 SWITCH MOUNT
043 P1021043 COLUMN
044 P1021044 SPINDLE NUT
045 P1021045 ELEV. LEAD SCREW, SHORT
046 PK48M KEY
048 P1021048 COLUMN
049 P1021049 SCALE
050 PS12M PHLP HD SCREW M3 - 0.5 x 6mm
051 P1021051 ELEVATION SPINDLE, LONG
052 P1021052 POINTER
053 P1021053 TABLE
055 P6202 BEARING 6202 - 2RS
057 P1021057 SPROCKET
062 PEC05M E-CLIP 15mm
G1021 15" Planer -43-
Ref# Part# Description
116B PK06M KEY 5 x 5 x 10mm
117 P1021117 GEAR AND SHAFT
119 P1021119 GEAR, 2 SPEED
120 P1021120 GEAR
121 P1021121 DOUBLE GEAR
122 P1021122 SHAFT
123 PK11M KEY 6 x 6 x 40mm
124 PK21M KEY 5 x 5 x 23mm
125 P1021125 OIL SEAL 25 x 47 x 7mm
127 P1021127 SPRING
128 P1021128 BALL 6mm
129 P1021129 SHIFTER
131 P1021131 SHIFTING HANDLE
132 P1021132 O-RING 12mm
133 P1021133 GEAR CASE
134 P1021134 KNOB
135 PSB06M CAP SCREW M6 - 1.0 x 25mm
136 P1021136 PIN
137 P1021137 SPROCKET
138 P1021138 SPECIAL WASHER
139 PB18M HEX BOLT M6 - 1.0 x 25mm
140 P1021140 CHAIN, 23 LINKS
141 P1021141 CHAIN COVER
142 PSB05M CAP SCREW M8 - 1.25 x 50mm
143 P1021143 THREADED GIB
144 P1021144 LOCKING ROD
145 P1021145 LOCKING KNOB
146 P1021146 GIB
147 PSB01M CAP SCREW M6 - 1.0 x 16mm
148 PW03M FLAT WASHER 6mm
149 P1021149 SPROCKET
150 PK21M KEY 5 x 5 x 23mm
151 P1021151 OUTFEED ROLLER
152 P1021152 SPRING
153 P1021153 BUSHING BLOCK
154 P1021154 CHIPBREAKER
155 PN01M HEX NUT M6 - 1.0
156 PSS11M SET SCREW M6 - 1.0 x 16mm
Ref# Part# Description
157 P1021157 CHIPBREAKER ADJUST ROD
159 PR05M E-CLIP 15mm
160 P1021160 SPACER
161 P1021161 ANTI-KICKBACK FINGER
162 P1021162 SHAFT
163 P1021163 INFEED ROLLER
164 P1021164 SPROCKET
165A P1021165A CHAIN, 31 LINKS
166 P1021166 KNIFE GAUGE
167 PWR810 WRENCH, 8 x 10mm
167A PWR1214 WRENCH, 12 x 14mm
168 P1021168 CHIP CHUTE
169 G1197 COMPLETE STAND
170 G1196 KNIFE, SET OF 3
172 PHL01 REPLACEMENT HALF LINK
173 PML01 REPLACEMENT MASTER LINK
174 P1021174 DEPTH LIMITER
175 PFH05M FLAT HD SCRW M5 - 0.8 x 12mm
176 P1033097 RETAINER
177 PR03M SNAP RING 12mm
178 P1021178 PIVOT ROD
179 PN09M HEX NUT M12 - 1.75
180 P1021180 STRAIN RELIEF
181 PSW01-1 SWITCH COVER SCREW
182 PLW03M LOCK WASHER 6mm
183 PWRCRD220L POWER CORD 220V, LONG
184 PWRCRD220S POWER CORD 220V, SHORT
185 PK15M KEY 5 x 5 x 35mm
186 PAW03M ALLEN
®
WRENCH 3mm
187 PAW04M ALLEN
®
WRENCH 4mm
188 PAW05M ALLEN
®
WRENCH 5mm
189 PAW06M ALLEN
®
WRENCH 6mm
191 PSB04M CAP SCREW M6 - 1.0 x 10mm
192 P1021192 LABEL
193 P1033105 SPACER
194 P1033104 SPRING
195 P1033102 SHAFT
196 P1033103 HANGER
-44- G1021 15" Planer
G1021 15" Planer -45-
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.
WARRANTY AND RETURNS
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