VARIABLE SPEED WOOD LATHE
MODEL G8690
INSTRUCTION MANUAL
COPYRIGHT © 1999 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.
REPRINTED JUNE, 2001 PRINTED IN TAIWAN.
Table Of Contents
PAGE
1. SAFETY
SAFETY RULES FOR ALL TOOLS......................................................................2-3
ADDITIONAL SAFETY INSTRUCTIONS FOR G8690 ............................................4
2. CIRCUIT REQUIREMENTS
110V OPERATION ..................................................................................................5
GROUNDING ..........................................................................................................5
EXTENSION CORDS ..............................................................................................5
3. INTRODUCTION
COMMENTARY........................................................................................................6
UNPACKING ............................................................................................................7
PIECE INVENTORY ................................................................................................7
CLEAN UP................................................................................................................8
SITE CONSIDERATIONS ........................................................................................8
4. ASSEMBLY
BEGINNING ASSEMBLY ........................................................................................9
GUIDE RAILS ..........................................................................................................9
TOOL REST ..........................................................................................................10
TAILSTOCK............................................................................................................10
LIVE CENTER........................................................................................................10
SPUR CENTER......................................................................................................11
FACEPLATE ..........................................................................................................11
5. OPERATIONS
TEST RUN..............................................................................................................12
SPINDLE TURNING..........................................................................................12-13
SPEED SELECTOR ..............................................................................................13
TOOL REST ..........................................................................................................14
6. MAINTENANCE
GENERAL ..............................................................................................................15
LUBRICATION........................................................................................................15
7. CLOSURE ....................................................................................................................16
MACHINE DATA................................................................................................................17
PARTS BREAKDOWN AND PARTS LISTS................................................................18-19
WARRANTY AND RETURNS ..........................................................................................20
G8690 Variable Speed Wood Lathe
-1-
SECTION 1: SAFETY
For Your Own Safety Read Instruction
Manual Before Operating This Equipment
The purpose of safety symbols is to attract your attention to possible hazardous conditions. This
manual uses a series of symbols and signal words which are 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.
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
proper operation of the equipment.
NOTICE
Safety Instructions For Power Tools
1. KEEP GUARDS IN PLACE and in working
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors should be
kept a safe distance from work area.
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.
6. MAKE WORKSHOP CHILD PROOF with
padlocks, master switches, or by removing
starter keys.
3. KEEP WORK AREA CLEAN. Cluttered
7. DO NOT FORCE TOOL. It will do the job
better and safer at the rate for which it was
designed.
areas and benches invite accidents.
4. DO NOT USE IN DANGEROUS ENVI-
RONMENT. Don’t use power tools in
damp or wet locations, or where any flam-
mable or noxious fumes may exist. Keep
work area well lighted.
8. USE RIGHT TOOL. Do not force tool or
attachment to do a job for which it was not
designed.
-2-
G8690 Variable Speed Wood Lathe
Safety Instructions For Power Tools
9. USE PROPER EXTENSION CORD. Make
sure your extension cord is in good condi-
tion. Conductor size should be in accor-
dance with the chart below. The amperage
rating should be listed on the motor or tool
nameplate. 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 exten-
sion cords if they become damaged.
16. REDUCE THE RISK OF UNINTENTION-
AL STARTING. On machines with mag-
netic contact starting switches there is a
risk of starting if the machine is bumped or
jarred. Always disconnect from power
source before adjusting or servicing. Make
sure switch is in OFF position before recon-
necting.
17. MANY WOODWORKING TOOLS CAN
“KICKBACK” THE WORKPIECE toward
the operator if not handled properly. Know
what conditions can create “kickback” and
know how to avoid them. Read the manual
accompanying the machine thoroughly.
Minimum Gauge for Extension Cords
LENGTH
AMP RATING
0-6
25ft
18
18
16
14
12
10
50ft 100ft
16
16
16
12
12
10
16
14
14
12
10
No
18. CHECK DAMAGED PARTS. Before fur-
ther 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, bind-
ing 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.
7-10
11-12
13-16
17-20
21-30
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 cov-
ering to contain long hair.
19. NEVER LEAVE TOOL RUNNING UNAT-
TENDED. TURN POWER OFF. Do not
leave tool until it comes to a complete stop.
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.
20. NEVER OPERATE A MACHINE WHEN
TIRED, OR UNDER THE INFLUENCE OF
DRUGS OR ALCOHOL. Full mental alert-
ness is required at all times when running
a machine.
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.
21. NEVER ALLOW UNSUPERVISED OR
INEXPERIENCED
PERSONEL
TO
13. DO NOT OVERREACH. Keep proper foot-
OPERATE THE MACHINE. Make sure
any instructions you give in regards to
machine operation are approved, correct,
safe, and clearly understood.
ing and balance at all times.
14. MAINTAIN TOOLS WITH CARE. Keep
tools sharp and clean for best and safest
performance. Follow instructions for lubri-
cating and changing accessories.
22. IF AT ANY TIME YOU ARE EXPERIENC-
ING DIFFICULTIES performing the intend-
ed operation, stop using the machine!
Then contact our service department or
ask a qualified expert how the operation
should be performed.
15. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recom-
mended accessories. The use of improper
accessories may cause risk of injury.
G8690 Variable Speed Wood Lathe
-3-
Additional Safety Instructions For The Lathe
1. MAKE SURE ALL GUARDS are in place
and that the Lathe sits on a flat, stable sur-
face.
8. NEVER OPERATE THE LATHE WITH
DAMAGED OR WORN PARTS. Maintain
your lathe in proper working condition.
Perform routine inspections and mainte-
nance promptly when called for. Put away
adjustment tools after use.
2. ALWAYS WEAR EYE PROTECTION or a
face shield when operating the Lathe. Use a
respirator to avoid inhaling dust. All safety
equipment should be ANSI approved.
9. MAKE SURE YOUR WOOD LATHE IS
TURNED OFF, disconnected from its power
source and all moving parts have come to a
complete stop before starting any inspec-
tion, adjustment, or maintenance procedure.
3. BEFORE STARTING THE MACHINE be
certain the workpiece has been properly
imbedded on the headstock and tailstock
centers and that there is adequate clearance
for the full rotation.
10. DO NOT LEAVE LATHE RUNNING UNAT-
TENDED for any reason.
4. ADJUST TOOL REST to provide proper
support for the turning tool you will be using.
Test tool rest clearance by rotating work-
piece by hand before turning lathe on.
11. DO NOT STOP LATHE USING YOUR
HAND against the workpiece.
12. KEEP LOOSE CLOTHING ARTICLES
such as sleeves, belts or jewelry items away
from the lathe spindle.
5. SELECT THE TURNING SPEED which is
appropriate for the type of work. Allow the
lathe to gain its full speed before using the
lathe.
13. WHEN FACE PLATE TURNING, use lathe
chisels on the downward spinning side of
the workpiece only.
6. ALWAYS INSPECT THE CONDITION of
the materials you are turning. Pay particular
attention to knots, splits and other potential-
ly dangerous conditions.
14. REMOVE THE TOOL REST when perform-
ing sanding or polishing operations on the
rotating spindle.
7. KEEP LATHE TOOLS PROPERLY
SHARPENED and hold firmly in the proper
position when turning.
15. ATTEMPTING TO REMOVE too much
material at once may cause work material to
fly out of the lathe.
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 per-
sonal injury, damage to equipment or poor
work results.
-4-
G8690 Variable Speed Wood Lathe
SECTION 2: CIRCUIT REQUIREMENTS
110V Operation
This equipment must be
grounded. Verify that any
existing electrical outlet
and circuit you intend to
plug into is actually
grounded. Under no cir-
cumstances should the
grounding pin from any
three-pronged plug be
The Model G8690 is wired for 110/120V, single-
phase operation only. The 1⁄3 HP motor will safely
draw 3.1 amps at 110V. If you operate this
machine on any circuit that is already close to its
capacity, it might blow a fuse or trip a circuit
breaker. However, if an unusual load does not
exist and a power failure still occurs, contact a
qualified electrician or our service department.
removed. Serious injury
may occur.
The lathe comes equipped with its own fuse rated
at 3.15 amps. Never replace the fuse with one
rated higher than 3.5 amps.
Extension Cords
If you find it necessary to use an extension cord
with the Model G8690, make sure the cord is
rated Hard Service (grade S) or better. Refer to
the chart in the standard safety instructions to
determine the minimum gauge for the extension
cord. The extension cord must also contain a
Figure 1A Do not remove grounding pin.
ground wire and plug pin. Always repair or replace
extension cords when they become worn or dam-
aged.
Grounding
In the event of an electrical short, grounding
reduces the risk of electric shock by providing a
path of least resistance to disperse electric cur-
rent. This tool is equipped with a power cord hav-
ing an equipment-grounding conductor. See
Figure 1. The outlet must be properly installed
and grounded in accordance with all local codes
and ordinances.
Figure 1. Typical 110V 3-prong plug and outlet.
G8690 Variable Speed Wood Lathe
-5-
SECTION 3: INTRODUCTION
Most importantly, we stand behind our machines.
Commentary
If you have any service questions or parts
requests, please call or write us at the location
listed below.
We are proud to offer the Grizzly Model G8690
Variable Speed Wood Lathe. The Model G8690 is
part of a growing Grizzly family of fine woodwork-
ing machinery. When used according to the
guidelines set forth in this manual, you can expect
years of trouble-free, enjoyable operation and
proof of Grizzly’s commitment to customer satis-
faction.
Grizzly Industrial, Inc.
2406 Reach Road
Williamsport, PA 17701
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
After fall 2001:
The Model G8690 is a wood turning lathe with a
variable spindle speed range of zero to 3025
R.P.M. Capacity between the centers is
adjustable up to 19" and the swing over the bed is
6". Shipping weight is approximately 40 lbs. This
lathe combines all the convenience of a bench
model with the features of a floor size model.
Grizzly Industrial, Inc.
1203 Lycoming Circle
Pennsdale, PA 17756
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G8690 as supplied when the manual was pre-
pared. However, owing to Grizzly’s policy of con-
tinuous 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.
A number of chisels, chucks, spur centers and live
centers for the Model G8690 are available
through the Grizzly catalog.
We are also pleased to provide this manual with
the Model G8690. It was written to guide you
through assembly, review safety considerations,
and cover general operating procedures. It repre-
sents our effort to produce the best documenta-
tion possible. If you have any comments regard-
ing this manual, please write to us at the address
below:
Read the manual before
assembly and opera-
tion. Become familiar
with the machine and
it’s operation before
beginning any work.
Serious personal injury
may result if safety or
operational information
is not understood or fol-
lowed.
Grizzly Industrial, Inc.
Technical Documentation
P.O. Box 2069
C
/O
Bellingham, WA 98227-2069
-6-
G8690 Variable Speed Wood Lathe
Unpacking
Piece Inventory
This wood lathe is shipped from the manufacturer
in a carefully packed carton. If you discover the
machine is damaged after you’ve signed for deliv-
ery, and the truck and driver are gone, you will
need to file a freight claim with the carrier. Save
the containers and all packing materials for possi-
ble inspection by the carrier or its agent. Without
the packing materials, filing a freight claim can be
difficult. If you need assistance determining
whether you need to file a freight claim, or with the
procedure to file one, please contact our
Customer Service.
After all the parts have been removed from the
carton, you should have:
• Lathe Assembly
• Stand Assembly
• Tool Rest
• Tailstock
• Live Center
• #1 M.T. Spur Center
• Hardware Accessories
In the event that any non-proprietary parts are
missing (e.g. a nut or a washer), we would be glad
to replace them, or, for the sake of expediency,
replacements can be obtained at your local hard-
ware store.
When you are completely satisfied with the condi-
tion of your shipment, you should inventory its
parts.
NOTICE
NOTICE
Save all containers and packing materials
until you are satisfied that your Model
G8690 has arrived in good condition.
Freight company adjusters will want to
inspect those materials in the event that a
freight claim must be made.
A full parts list and breakdown can be found
toward the end of this manual. For easier
assembly, or to identify specific parts,
please refer to the detailed illustrations at
the end of the manual.
G8690 Variable Speed Wood Lathe
-7-
Clean Up
Site Considerations
The unpainted surfaces are coated with a waxy oil
to protect them from corrosion during shipment.
Remove this protective coating with a solvent
cleaner or citrus-based degreaser such as
Grizzly’s G7895 Degreaser. Avoid chlorine-based
solvents as they may damage painted surfaces
should they come in contact. Always follow the
usage instructions on the product you choose for
clean up.
BENCH LOAD
Your Model G8690 represents a moderately large
weight load in a small footprint. Ensure that your
workbench is sturdy enough to carry the weight of
the Model G8690. If you question the strength of
your workbench, you can opt to reinforce it.
WORKING CLEARANCES
Working clearances can be thought of as the dis-
tances between machines and obstacles that
allow safe operation of every machine without lim-
itation. 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 effi-
cient material handling. Be sure to allow yourself
sufficient room to safely run your machines in any
foreseeable operation.
Do not use gasoline or
other petroleum-based
solvents to clean with.
They have low flash
points which make them
extremely flammable. A
risk of explosion and
burning exists if these
products are used.
Serious personal injury
may occur.
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.
Many of the solvents commonly used to
clean machinery can be 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 environmen-
tal hazards. Keep children and animals
safely away when cleaning and assembling
this machine.
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, adjust-
ing or operating equip-
ment.
Do not smoke while using
solvents. A risk of explo-
sion or fire exists and may
result in serious personal
injury.
-8-
G8690 Variable Speed Wood Lathe
SECTION 4: ASSEMBLY
Guide Rails
Beginning Assembly
Install the two guide rails between the two foot
assemblies and secure in place using the four
setscrews (M6-1 x 10) as shown in
.
Figure 2.
Disconnect power to the
machine when perform-
ing any maintenance,
assembly or adjust-
ments. Failure to do this
may result in serious
personal injury.
Keep loose clothing
rolled up and out of the
way of machinery and
keep hair pulled back.
Wear safety glasses
during the entire assem-
bly process. Failure to
comply may result in
serious personal injury.
Figure 2. Guide rails installed.
Most of your Model G8690 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: A metric socket set, 6"
adjustable wrench, and Phillips® head screw dri-
ver.
G8690 Variable Speed Wood Lathe
-9-
Tool Rest
Tailstock
Install the tool rack brackets and the tool rack
base onto the guide rails using the hex bolt (M12-
The tailstock rests on the guide rails and is held in
place by the tailstock bracket using a double end
screw (M12-1.75 x 65), washer and handle. The
tailstock can be adjusted along the length of the
guide rails to accommodate various lengths of
wood stock. There are two ways to adjust the tail-
stock. The handle located under the lathe bed can
be loosened, allowing the tailstock to slide up and
down the length of the guide rails; or the hand
wheel can be loosened, allowing the threaded
spindle to move back and forth in the tailstock for
fine adjustment. See Figure 5.
1.75 x 65), washer and handle. See
Figure 3.
Figure 3. Tool rack mounted to guide rails.
The tool rest fits into the tool rack shaft and is
tightened in place with a setscrew (M6-1 x 8). The
tool rack shaft drops into the tool rack base and is
secured with the tightening knob as shown in
Figure 4.
Figure 5. Tailstock mounted to guide rails.
Live Center
The live center is installed by inserting the end of
the shaft into the tailstock assembly. While hold-
ing in place, turn the handwheel on the tailstock
clockwise until snug.
Figure 4. Tool rest mounted in bracket.
-10-
G8690 Variable Speed Wood Lathe
Spur Center
Faceplate
The Model G8690 is supplied with a #1 Morse
Taper spur center for use when spindle turning.
The spur center is used in conjunction with the
tailstock live center. Install the spur center by
inserting it into the hole in the headstock spindle
end. To remove the spur center from the head-
stock, insert a pin into the spindle hole and turn
the hex nut counterclockwise with a wrench until
the spur center is ejected. See Figure 5A.
The faceplate is used for turning plates and
bowls. To install the faceplate, remove the spur
center. Insert a pin in the spindle shaft to hold the
spindle, and thread the faceplate onto the spindle
threads as seen in Figure 6. Tighten securely
with your fingers, and use the mounting holes on
the faceplate to attach wood stock with wood
screws.
We recommend cleaning the spur center
taper with mineral spirits. Refer to the safe-
ty warnings on the container of the mineral
spirits. Failure to clean the mating surfaces
may result in separation, and an unsafe
condition. Separation is usually a result of
oil or grease on the taper.
Motor Housing
Spur Center
Figure 6. Installing the faceplate.
M.T #1
Hex Nut
Figure 5A. Hex nut installed before inserting
spur center.
G8690 Variable Speed Wood Lathe
-11-
SECTION 5: OPERATIONS
Spindle Turning
Test Run
To mount a workpiece between centers:
1. Locate the center point on both ends of the
workpiece by carefully drawing diagonal lines
from corner to corner. The point of intersec-
tion is the center of the work. Find the center
of round wood stock by using a center finder
instrument.
Keep loose clothing
rolled up and out of the
way of machinery and
keep hair pulled back.
2. When turning stock with a diameter greater
than 2", remove the corner length edges with
a hand plane or similar operation as shown in
Figure 6A.
Wear a face shield dur-
ing the test run and
operation of this wood
working lathe. Failure to
do so could result in
serious injury.
Wood Stock
Once assembly is complete and adjustments are
done to your satisfaction, you are ready to test run
the machine.
D"
Press the START button. Make sure that your fin-
ger is poised on the STOP button, just in case
there is a problem. The lathe should run smooth-
ly, with little or no vibration or rubbing noises.
Strange or unnatural noises should be investigat-
ed and corrected before operating the machine
further.
If measurement D" is greater
than 2", cut off the corners of
the wood stock.
Figure 6A. Cross-section of turning stock.
If you cannot easily locate the source of an
unusual noise or vibration, contact our service
department for help.
3. Hold the spindle vertically and support it on a
solid surface. Line up the spur center with the
center of the workpiece. Drive the spur cen-
ter into the stock about 1⁄4" using a dead blow
hammer. Be careful not to split the work-
piece. See
Wood with splits along
Figure 6B.
Make sure the live center in the tailstock
lines up with the spur center in the head-
stock before turning anything between the
centers. Failure to observe this step could
result in the workpiece being thrown from
the lathe. Serious personal injury could
occur if care is not taken.
the grain may fly off during the operation.
With dense wood, drill a hole at the centers
and score lines with a saw blade for the spur.
-12-
G8690 Variable Speed Wood Lathe
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