
99'''' XX 1199'''' MMEETTAALL LLAATTHHEE
MMOODDEELL GG44000000
IINNSSTTRRUUCCTTIIOONN MMAANNUUAALL
COPYRIGHT © 1999 BY GRIZZLY INDUSTRIAL, INC.
WWAARRNNIINNGG:: NNOO PPOORRTTIIOONN OOFF TTHHIISS MMAANNUUAALL MMAAYY BBEE RREEPPRROODDUUCCEEDD IINN AANNYY SSHHAAPPEE
OORR FFOORRMM WWIITTHHOOUUTT TTHHEE WWRRIITTTTEENN AAPPPPRROOVVAALL OOFF GGRRIIZZZZLLYY IINNDDUUSSTTRRIIAALL,, IINNCC..
REVISED OCTOBER, 1999 PRINTED IN U.S.A.

G4000 9'' x 19'' Lathe -1-
TTaabbllee OOff CCoonntteennttss
PPAAGGEE
11.. SSAAFFEETTYY
SAFETY RULES FOR POWER TOOLS ..........................................................2-3
ADDITIONAL SAFETY INSTRUCTIONS FOR METAL LATHES ........................4
22.. CCIIRRCCUUIITT RREEQQUUIIRREEMMEENNTTSS
110V OPERATION ..............................................................................................5
EXTENSION CORDS ..........................................................................................5
GROUNDING ......................................................................................................5
33.. IINNTTRROODDUUCCTTIIOONN
COMMENTARY....................................................................................................6
UNPACKING ........................................................................................................7
PIECE INVENTORY ............................................................................................7
CLEAN UP............................................................................................................8
SITE CONSIDERATIONS ....................................................................................8
44.. AASSSSEEMMBBLLYY && SSEETTUUPP
MOUNTING ..........................................................................................................9
LUBRICATION ....................................................................................................9
CHUCKS ........................................................................................................9-10
LIVE CENTER....................................................................................................10
STEADY REST ..................................................................................................11
FOLLOW REST..................................................................................................11
55.. CCOONNTTRROOLLSS
SPINDLE SPEEDS ............................................................................................12
FEED RATE ......................................................................................................13
CARRIAGE CONTROLS ..............................................................................14-16
TAILSTOCK CONTROLS ..................................................................................16
TEST RUN..........................................................................................................17
66.. AADDJJUUSSTTMMEENNTTSS
SPINDLE RPM ..................................................................................................18
GIBS..............................................................................................................18-19
STEADY REST/FOLLOW REST........................................................................19
CHUCK RUNOUT ........................................................................................20-21
TAILSTOCK ..................................................................................................21-22
THREAD CUTTING............................................................................................23
77.. MMAAIINNTTEENNAANNCCEE
LUBRICATION ..............................................................................................24-25
BEARING PRELOAD ........................................................................................25
88.. CCLLOOSSUURREE
................................................................................................................26
MACHINE DATA ................................................................................................................27
BELT CONFIGURATION CHART ......................................................................................28
STOCK RPM CHART ........................................................................................................29
PARTS BREAKDOWN AND PARTS LISTS ................................................................30-53
WARRANTY AND RETURNS ............................................................................................54

-2- G4000 9'' x 19'' Lathe
SSaaffeettyy IInnssttrruuccttiioonnss FFoorr PPoowweerr TToooollss
SSEECCTTIIOONN 11:: SSAAFFEETTYY
55.. KKEEEEPP CCHHIILLDDRREENN AANNDD VVIISSIITTOORRSS
AAWWAAYY
. All children and visitors should be
kept a safe distance from work area.
66.. MMAAKKEE WWOORRKK SSHHOOPP CCHHIILLDD PPRROOOOFF
with
padlocks, master switches, or by removing
starter keys.
77.. DDOONN’’TT FFOORRCCEE TTOOOOLL
. It will do the job
better and safer at the rate for which it was
designed.
88.. UUSSEE RRIIGGHHTT TTOOOOLL..
Don’t force tool or
attachment to do a job for which it was not
designed.
11.. KKEEEEPP GGUUAARRDDSS IINN PPLLAACCEE
and in working
order.
22.. RREEMMOOVVEE AADDJJUUSSTTIINNGG KKEEYYSS AANNDD
WWRREENNCCHHEESS
. Develop a habit of checking
to see that keys and adjusting wrenches
are removed from tool before turning on
..
33.. KKEEEEPP WWOORRKK AARREEAA CCLLEEAANN
. Cluttered
areas and benches invite accidents.
44.. DDOONN’’TT UUSSEE IINN DDAANNGGEERROOUUSS EENNVVIIRROONN--
MMEENNTT
. Don’t use power tools in damp or
wet locations, or where any flammable or
noxious fumes may exist. Keep work area
well lighted.
FFoorr YYoouurr OOwwnn SSaaffeettyy RReeaadd IInnssttrruuccttiioonn
MMaannuuaall BBeeffoorree OOppeerraattiinngg TThhiiss EEqquuiippmmeenntt
IInnddiiccaatteess aann iimmmmiinneennttllyy hhaazzaarrddoouuss ssiittuuaattiioonn wwhhiicchh,, iiff nnoott
aavvooiiddeedd,, WWIILLLL rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
IInnddiiccaatteess aa ppootteennttiiaallllyy hhaazzaarrddoouuss ssiittuuaattiioonn wwhhiicchh,, iiff nnoott
aavvooiiddeedd,, CCOOUULLDD
rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
IInnddiiccaatteess aa ppootteennttiiaallllyy hhaazzaarrddoouuss ssiittuuaattiioonn wwhhiicchh,, iiff nnoott
aavvooiiddeedd,, MMAAYY
rreessuulltt iinn mmiinnoorr oorr mmooddeerraattee iinnjjuurryy.. IItt mmaayy aallssoo
bbee uusseedd ttoo aalleerrtt aaggaaiinnsstt uunnssaaffee pprraaccttiicceess..
TThhiiss ssyymmbbooll iiss uusseedd ttoo aalleerrtt tthhee uusseerr ttoo uusseeffuull iinnffoorrmmaattiioonn
aabboouutt pprrooppeerr ooppeerraattiioonn ooff tthhee eeqquuiippmmeenntt..
TThhee ppuurrppoossee ooff ssaaffeettyy ssyymmbboollss iiss ttoo aattttrraacctt yyoouurr aatttteennttiioonn ttoo ppoossssiibbllee hhaazzaarrddoouuss ccoonnddiittiioonnss..
TThhiiss mmaannuuaall uusseess aa sseerriieess ooff ssyymmbboollss aanndd ssiiggnnaall wwoorrddss wwhhiicchh aarree iinntteennddeedd ttoo ccoonnvveeyy tthhee lleevveell
ooff iimmppoorrttaannccee ooff tthhee ssaaffeettyy mmeessssaaggeess.. TThhee pprrooggrreessssiioonn ooff ssyymmbboollss iiss ddeessccrriibbeedd bbeellooww..
RReemmeemmbbeerr tthhaatt ssaaffeettyy mmeessssaaggeess bbyy tthheemmsseellvveess ddoo nnoott eelliimmiinnaattee ddaannggeerr aanndd aarree nnoott aa ssuubbssttii--
ttuuttee ffoorr pprrooppeerr aacccciiddeenntt pprreevveennttiioonn mmeeaassuurreess..
NNOOTTIICCEE

G4000 9'' x 19'' Lathe -3-
99.. UUSSEE PPRROOPPEERR EEXXTTEENNSSIIOONN CCOORRDD
. Make
sure your extension cord is in good condition. Conductor size should be in accordance 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 extension cords if they become damaged.
Minimum Gauge for Extension Cords
1100.. WWEEAARR PPRROOPPEERR AAPPPPAARREELL..
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.
1111.. AALLWWAAYYSS UUSSEE SSAAFFEETTYY GGLLAASSSSEESS..
Also
use face or dust mask if cutting operation is
dusty. Everyday eyeglasses only have
impact resistant lenses, they are NOT safety glasses.
1122.. SSEECCUURREE WWOORRKK..
Use clamps or a vise to
hold work when practical. It’s safer than
using your hand and frees both hands to
operate tool.
LLEENNGGTTHH
AAMMPP RRAATTIINNGG 2255fftt 5500fftt 110000fftt
0-6 18 16 16
7-10 18 16 14
11-12 16 16 14
13-16 14 12 12
17-20 12 12 10
21-30 10 10 No
SSaaffeettyy IInnssttrruuccttiioonnss FFoorr PPoowweerr TToooollss
1133.. DDOONN’’TT OOVVEERRRREEAACCHH..
Keep proper foot-
ing and balance at all times.
1144.. MMAAIINNTTAAIINN TTOOOOLLSS WWIITTHH CCAARREE..
Keep
tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
1155.. DDIISSCCOONNNNEECCTT TTOOOOLLSS
before servicing
and changing accessories, such as blades,
bits, cutters, and the like.
1166.. RREEDDUUCCEE TTHHEE RRIISSKK OOFF UUNNIINNTTEENNTTIIOONN--
AALL SSTTAARRTTIINNGG..
Make sure switch is in off
position before plugging in.
1177.. UUSSEE RREECCOOMMMMEENNDDEEDD AACCCCEESSSSOORRIIEESS..
Consult the owner’s manual for recommended accessories. The use of improper
accessories may cause risk of injury.
1188.. CCHHEECCKK DDAAMMAAGGEEDD PPAARRTTSS..
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.
1199.. NNEEVVEERR LLEEAAVVEE TTOOOOLL RRUUNNNNIINNGG UUNNAATT--
TTEENNDDEEDD.. TTUURRNN PPOOWWEERR OOFFFF..
Don’t
leave tool until it comes to a complete stop.

-4- G4000 9'' x 19'' Lathe
AAddddiittiioonnaall SSaaffeettyy IInnssttrruuccttiioonnss FFoorr TThhee LLaatthhee
LLiikkee aallll ppoowweerr ttoooollss,, tthheerree iiss ddaannggeerr aassssoo--
cciiaatteedd wwiitthh tthhee MMooddeell GG44000000 MMeettaall LLaatthhee..
AAcccciiddeennttss aarree ffrreeqquueennttllyy ccaauusseedd bbyy llaacckk ooff
ffaammiilliiaarriittyy oorr ffaaiilluurree ttoo ppaayy aatttteennttiioonn.. UUssee
tthhiiss ttooooll wwiitthh rreessppeecctt aanndd ccaauuttiioonn ttoo lleesssseenn
tthhee ppoossssiibbiilliittyy ooff ooppeerraattoorr iinnjjuurryy.. IIff nnoorrmmaall
ssaaffeettyy pprreeccaauuttiioonnss aarree oovveerrllooookkeedd oorr
iiggnnoorreedd sseerriioouuss ppeerrssoonnaall iinnjjuurryy mmaayy ooccccuurr..
11.. MMAAKKEE SSUURREE AALLLL GGUUAARRDDSS
are in place
and that the lathe sits on a flat, stable surface.
22.. BBEEFFOORREE SSTTAARRTTIINNGG TTHHEE MMAACCHHIINNEE
be
certain the workpiece has been properly
engaged in the chuck and tailstock center (if
in use) and that there is adequate clearance
for full rotation.
33.. AADDJJUUSSTT TTOOOOLL HHOOLLDDEERR
to provide proper
support for the turning tool you will be using.
Test tool holder clearance by rotating workpiece by hand before turning lathe on.
44.. SSEELLEECCTT TTHHEE TTUURRNNIINNGG SSPPEEEEDD
which is
appropriate for the type of work and the type
of material. Allow the lathe to gain its full
speed before beginning turning.
55.. NNEEVVEERR CCHHAANNGGEE FFEEEEDD RRAATTEE
or spindle
speeds while the lathe is turning.
66.. NNEEVVEERR RREEVVEERRSSEE MMOOTTOORR DDIIRREECCTTIIOONN
while the lathe is running.
77.. DDOO NNOOTT SSTTOOPP LLAATTHHEE UUSSIINNGG YYOOUURR
HHAANNDD
against the workpiece.
88.. DDOO NNOOTT LLEEAAVVEE LLAATTHHEE RRUUNNNNIINNGG UUNNAATT--
TTEENNDDEEDD
for any reason.
99.. NNEEVVEERR OOPPEERRAATTEE TTHHEE LLAATTHHEE WWIITTHH
DDAAMMAAGGEEDD OORR WWOORRNN PPAARRTTSS..
Maintain
your lathe in proper working condition.
Perform routine inspections and maintenance promptly when called for. Put away
adjustment tools after use.
1100.. MMAAKKEE SSUURREE YYOOUURR MMEETTAALL LLAATTHHEE IISS
TTUURRNNEEDD OOFFFF
, disconnected from its power
source and all moving parts have come to a
complete stop before starting any inspection,
adjustment, or maintenance procedure.
1111.. KKEEEEPP LLOOOOSSEE CCLLOOTTHHIINNGG AARRTTIICCLLEESS
such
as sleeves, belts or jewelry items away from
the lathe spindle.
1122.. AALLWWAAYYSS UUSSEE TTHHEE PPRROOPPEERR CCUUTTTTIINNGG
TTOOOOLLSS
for the material you are turning,
make certain they are sharp and that they
are held firmly in the tool holder.
1133.. AALLWWAAYYSS PPLLAACCEE AA BBOOAARRDD OORR PPIIEECCEE OOFF
PPLLYYWWOOOODD AACCRROOSSSS TTHHEE BBEEDDWWAAYY
when
removing or installing chucks to avoid the
possibility of a finger pinch point occurring
between a loose chuck and the edges of the
bedway.
NNoo lliisstt ooff ssaaffeettyy gguuiiddeelliinneess ccaann bbee ccoommpplleettee..
EEvveerryy sshhoopp eennvviirroonnmmeenntt iiss ddiiffffeerreenntt.. AAllwwaayyss
ccoonnssiiddeerr ssaaffeettyy ffiirrsstt,, aass iitt aapppplliieess ttoo yyoouurr
iinnddiivviidduuaall wwoorrkkiinngg ccoonnddiittiioonnss.. UUssee tthhiiss aanndd
ootthheerr mmaacchhiinneerryy wwiitthh ccaauuttiioonn aanndd rreessppeecctt..
FFaaiilluurree ttoo ddoo ssoo ccoouulldd rreessuulltt iinn sseerriioouuss ppeerr--
ssoonnaall iinnjjuurryy,, ddaammaaggee ttoo eeqquuiippmmeenntt oorr ppoooorr
wwoorrkk rreessuullttss..

G4000 9'' x 19'' Lathe -5-
111100VV OOppeerraattiioonn
SSEECCTTIIOONN 22:: CCIIRRCCUUIITT RREEQQUUIIRREEMMEENNTTSS
FFiigguurree 11..
Typical 110V plug and outlet.
GGrroouunnddiinngg
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.
SSeeee
FFiigguurree 11..
The outlet must be properly installed
and grounded in accordance with all local codes
and ordinances.
The Model G4000 is wired for 110 volt, single
phase operation only. The
3
⁄4 HP motor will safely
draw 12 amps at 110V. A 15-amp fuse or circuit
breaker should be used when connecting this
metal lathe. Circuits rated any higher are not adequate to protect the motor.
If you operate this lathe 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.
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.
If you find it necessary to use an extension cord
with the Model G4000, 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
ground wire and plug pin. Always repair or
replace extension cords when they become worn
or damaged.
EExxtteennssiioonn CCoorrddss
TThhiiss eeqquuiippmmeenntt mmuusstt bbee ggrroouunnddeedd.. VVeerriiffyy
tthhaatt aannyy eexxiissttiinngg eelleeccttrriiccaall oouuttlleett aanndd cciirrccuuiitt
yyoouu iinntteenndd ttoo pplluugg iinnttoo iiss aaccttuuaallllyy ggrroouunndd--
eedd.. IIff iitt iiss nnoott,, iitt wwiillll bbee nneecceessssaarryy ttoo rruunn aa
sseeppaarraattee 1122 AA..WW..GG.. ccooppppeerr ggrroouunnddiinngg wwiirree
ffrroomm tthhee oouuttlleett ttoo aa kknnoowwnn ggrroouunndd.. UUnnddeerr
nnoo cciirrccuummssttaanncceess sshhoouulldd tthhee ggrroouunnddiinngg ppiinn
ffrroomm aannyy tthhrreeee--pprroonnggeedd pplluugg bbee rreemmoovveedd..
SSeerriioouuss iinnjjuurryy mmaayy ooccccuurr..
Grounded Outlet Box
Current
Carrying
Prongs
Grounding Blade Is
Longest Of the Three Blades

-6- G4000 9'' x 19'' Lathe
CCoommmmeennttaarryy
We are proud to offer the Grizzly Model G4000
9" x 19" Metal Lathe. The Model G4000 is part of
a growing Grizzly family of fine metalworking
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 satisfaction.
The Model G4000 is a precision metalworking
lathe. It features cast iron construction, 19" Vbed, a speed range of 130-2,000 RPM, 6-speed
gearbox and a complete electrical package. The
electrical package consists of a,
3
⁄4 H.P., 110V
motor, mechanical forward and reverse switch
and cord set. We also offer many accessories for
this lathe. Please refer to the latest Grizzly catalog for prices and information.
We are also pleased to provide this instructional
manual with the Model G4000 Lathe. This manual was written to guide you through assembly,
review safety considerations and cover basic
operating procedures. It represents our latest
effort to produce the best documentation possible. If you have any constructive criticisms or
comments you feel we should include in our next
printing, please write us at the address below.
Grizzly Industrial, Inc.
C
/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
Most importantly, we stand behind our machines.
If you have any service questions or parts
requests, please call or write us at the location
listed below.
Grizzly Industrial, Inc.
2406 Reach Road
Williamsport, PA 17701
Phone: (570) 326-3806
Fax: (800) 438-5901
E-Mail: techsupport@grizzlyindustrial.com
Web Site: http://www.grizzly.com
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G4000 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.
TToo ooppeerraattee tthhiiss,, oorr aannyy ppoowweerr ttooooll,, ssaaffeellyy
aanndd eeffffiicciieennttllyy,, iitt iiss eesssseennttiiaall ttoo bbeeccoommee aass
ffaammiilliiaarr wwiitthh iittss cchhaarraacctteerriissttiiccss aass ppoossssiibbllee..
TThhee ttiimmee yyoouu iinnvveesstt bbeeffoorree yyoouu bbeeggiinn ttoo uussee
yyoouurr MMooddeell GG44000000 wwiillll bbee ttiimmee wweellll ssppeenntt..
DDOO NNOOTT ooppeerraattee tthhiiss mmaacchhiinnee uunnttiill yyoouu aarree
ccoommpplleetteellyy ffaammiilliiaarr wwiitthh tthhee ccoonntteennttss ooff tthhiiss
mmaannuuaall.. MMaakkee ssuurree yyoouu rreeaadd aanndd uunnddeerr--
ssttaanndd aallll ooff tthhee ssaaffeettyy pprroocceedduurreess.. IIff yyoouu ddoo
nnoott uunnddeerrssttaanndd ssoommeetthhiinngg,, DDOO NNOOTT ooppeerraattee
tthhee mmaacchhiinnee..
SSEECCTTIIOONN 33:: IINNTTRROODDUUCCTTIIOONN

G4000 9'' x 19'' Lathe -7-
UUnnppaacckkiinngg
This Metal Lathe is shipped from the manufacturer in a carefully packed carton. If you discover the
machine is damaged after you’ve signed for delivery, 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 possible 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.
When you are completely satisfied with the condition of your shipment, you should inventory its
parts.
The G4000 is a heavy machine (300 lbs. shipping weight). DO NOT over-exert yourself
while unpacking or moving your machine – get
assistance. In the event that your Metal Lathe
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.
SSeerriioouuss ppeerrssoonnaall iinnjjuurryy mmaayy
ooccccuurr..
PPiieeccee IInnvveennttoorryy
The Model G4000 is, for the most part, preassembled at the factory. Inside the crate you’ll
find:
• The Model G4000 Metal Lathe
• 4" 3-jaw Chuck
• 7" 4-jaw Chuck
• Face Plate
• Steady Rest
• Following Rest
• 4-Way Tool Post
• C-Type Tool Post
• Toolbox
• Metric Allen
®
Wrenches
• 8-10mm Combination wrench
• Regular Screwdriver
• Phillips
®
Screwdriver
• Oil can
• 30T Gear (2)
• 36T Gear
• 42T Gear
• 45T Gear
• 80T Gear (2)
• Chuck wrenches (2)
• Chuck Removal Bars (2)
• Reverse Jaws for the 3-Jaw Chuck
• Dead Centers - MT #2, MT #3
• Live Center - MT #3
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
hardware store.

-8- G4000 9'' x 19'' Lathe
SSiittee CCoonnssiiddeerraattiioonnss
11.. FFlloooorr LLooaadd::
The Model G4000 can be
mounted on your existing workbench or on
an optional cabinet stand which is listed in
our current Grizzly catalog. If you choose to
use the stand, you will find the holes for bolting the G4000 to the stand are already in
place. If you are using your own bench,
ensure that it is strong enough to handle the
G4000 lathe. Keep in mind, whichever way
you choose to mount the lathe, it’s essential
that the mounting surface be perfectly flat.
Use an accurate carpenter’s level to ensure
that your bench is properly leveled.
22.. WWoorrkkiinngg CClleeaarraanncceess::
Consider existing and
anticipated needs, size of material to be
processed through each machine, and
space for auxiliary stands, work tables or
other machinery when establishing a location for your lathe.
33.. LLiigghhttiinngg aanndd OOuuttlleettss::
Lighting should be
bright enough to eliminate shadow and prevent eye strain. Electrical circuits should be
dedicated or large enough to handle amperage requirements. Outlets should be located
near each machine so power or extension
cords are clear of high-traffic areas. Observe
local electrical codes for proper installation
of new lighting, outlets, or circuits.
CClleeaann UUpp
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. 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.
MMaannyy ooff tthhee ssoollvveennttss ccoommmmoonnllyy uusseedd ttoo
cclleeaann mmaacchhiinneerryy ccaann bbee hhiigghhllyy ffllaammmmaabbllee,,
aanndd ttooxxiicc wwhheenn iinnhhaalleedd oorr iinnggeesstteedd.. AAllwwaayyss
wwoorrkk iinn wweellll--vveennttiillaatteedd aarreeaass ffaarr ffrroomm
ppootteennttiiaall iiggnniittiioonn ssoouurrcceess wwhheenn ddeeaalliinngg
wwiitthh ssoollvveennttss.. UUssee ccaarree wwhheenn ddiissppoossiinngg ooff
wwaassttee rraaggss aanndd ttoowweellss ttoo bbee ssuurree tthheeyy ddoo
nnoott ccrreeaattee ffiirree oorr eennvviirroonnmmeennttaall hhaazzaarrddss..
KKeeeepp cchhiillddrreenn aanndd aanniimmaallss ssaaffeellyy aawwaayy
wwhheenn cclleeaanniinngg aanndd aasssseemmbblliinngg tthhiiss
mmaacchhiinnee..
DDoo nnoott uussee ggaassoolliinnee oorr ootthheerr ppeettrroolleeuumm--
bbaasseedd ssoollvveennttss ttoo rreemmoovvee tthhiiss pprrootteeccttiivvee
ccooaattiinngg.. TThheessee pprroodduuccttss ggeenneerraallllyy hhaavvee llooww
ffllaasshh ppooiinnttss wwhhiicchh mmaakkeess tthheemm eexxttrreemmeellyy
ffllaammmmaabbllee.. AA rriisskk ooff eexxpplloossiioonn aanndd bbuurrnniinngg
eexxiissttss iiff tthheessee pprroodduuccttss aarree uusseedd.. SSeerriioouuss
ppeerrssoonnaall iinnjjuurryy mmaayy ooccccuurr..
AAllll ddiiee--ccuutt mmeettaall ppaarrttss hhaavvee aa sshhaarrpp eeddggee
((ccaalllleedd ““ffllaasshhiinngg””)) oonn tthheemm aafftteerr tthheeyy aarree
ffoorrmmeedd.. TThhiiss iiss ggeenneerraallllyy rreemmoovveedd aatt tthhee
ffaaccttoorryy.. SSoommeettiimmeess aa bbiitt ooff ffllaasshhiinngg mmiigghhtt
eessccaappee iinnssppeeccttiioonn,, aanndd tthhee sshhaarrpp eeddggee mmaayy
ccaauussee ccuuttss oorr llaacceerraattiioonnss wwhheenn hhaannddlleedd..
PPlleeaassee eexxaammiinnee tthhee eeddggeess ooff aallll ddiiee--ccuutt
mmeettaall ppaarrttss aanndd ffiillee oorr ssaanndd tthhee eeddggee ttoo
rreemmoovvee tthhee ffllaasshhiinngg bbeeffoorree hhaannddlliinngg..
MMaakkee yyoouurr sshhoopp ““cchhiilldd ssaaffee””.. EEnnssuurree tthhaatt
yyoouurr wwoorrkkppllaaccee iiss iinnaacccceessssiibbllee ttoo yyoouunngg--
sstteerrss bbyy cclloossiinngg aanndd lloocckkiinngg aallll eennttrraanncceess
wwhheenn yyoouu aarree aawwaayy.. NNeevveerr aallllooww vviissiittoorrss iinn
yyoouurr sshhoopp wwhheenn aasssseemmbblliinngg,, aaddjjuussttiinngg oorr
ooppeerraattiinngg eeqquuiippmmeenntt..

G4000 9'' x 19'' Lathe -9-
CChhuucckkss
The Model G4000 Metal Lathe comes equipped
with a 4'' 3-jaw chuck (already installed), a 7'' 4jaw chuck and a face plate.
The 3-jaw chuck is a scroll-type chuck, meaning
that all three jaws move in unison when adjustments are made. The 4-jaw chuck, on the other
hand, features independent jaws. The 4-jaw
chuck is used for square or unevenly-shaped
stock.
The 3 and 4-jaw chucks have a setscrew in the
hub of the back plate.
FFiigguurree 22..
This setscrew
prevents the chucks from unscrewing when rotating the lathe in the reverse direction. Prior to
removing the chuck, loosen the setscrew in the
hub of the back plate.
FFiigguurree 22..
Typical chuck mounting.
MMoouunnttiinngg
This lathe model should be securely mounted to
a stand or benchtop. An accessory stand is available from Grizzly, please see our current catalog
for pricing. There are two holes at each end of the
lathe base which can be used to secure machine
to the base.
The lathe does not require a great deal of assembly. This section details the installation of the various accessory holding devices. The following
section will familiarize you with the controls for
your new lathe. After you have completed both of
these sections we will do a test run of the
machine. Do not attempt a test run until you have
become familiar with both of these sections.
SSEECCTTIIOONN 44:: AASSSSEEMMBBLLYY && SSEETTUUPP
DDOO NNOOTT aatttteemmpptt ttoo ssttaarrtt tthhiiss mmaacchhiinnee uunnttiill
yyoouu hhaavvee ccoommpplleetteedd aallll ooff tthhee aasssseemmbbllyy aanndd
ccoonnttrrooll ffaammiilliiaarriizzaattiioonn sstteeppss.. WWhheenn ppeerrffoorrmm--
iinngg tthhee aasssseemmbbllyy sstteeppss,, eennssuurree tthhaatt tthhee
sswwiittcchh iiss ooffff aanndd tthhee ppoowweerr iiss ddiissccoonnnneecctteedd..
FFaaiilluurree ttoo ccoommppllyy wwiitthh tthhiiss ccoouulldd ccaauussee
iinnaaddvveerrtteenntt ssttaarrttiinngg ooff tthhee mmaacchhiinnee wwhhiicchh
ccaann rreessuulltt iinn sseerriioouuss ooppeerraattoorr iinnjjuurryy..
LLuubbrriiccaattiioonn
The G4000 is shipped from the factory pre-lubricated. However, it is recommended that you go
through the entire lubrication sequence before
operating the machine. Review
SSeeccttiioonn 77::
MMaaiinntteennaannccee
for lubrication instructions.
LLuubbrriiccaattiioonn mmuusstt bbee ccoommpplleetteedd bbeeffoorree yyoouu
ssttaarrtt yyoouurr nneeww llaatthhee..
Setscrew
AALLWWAAYYSS ppllaaccee aa ppiieeccee ooff ppllyywwoooodd oovveerr tthhee
wwaayyss ooff tthhee llaatthhee bbeeffoorree rreemmoovviinngg oorr
iinnssttaalllliinngg aa cchhuucckk.. TThhiiss hheellppss iinn pprroovviiddiinngg aa
ffllaatt ssuurrffaaccee ffoorr tthhee cchhuucckk ttoo llaanndd oonn,, tthheerree--
bbyy aavvooiiddiinngg aa ppootteennttiiaall ffiinnggeerr ppiinncchh ssiittuuaa--
ttiioonn..

-10- G4000 9'' x 19'' Lathe
FFiigguurree 33..
Chuck removal bars in place.
Use the chuck removal bars supplied to remove
the 3 or 4-jaw chucks.
FFiigguurree 33..
Use one bar to
hold the spindle stationary, the other to unscrew
the chuck. Turn the chuck counter-clockwise to
remove.
To mount one of the standard chucks, line up the
desired chuck (or face plate) with the threaded
spindle. Thread the chuck in place. Take care to
ensure that the threads on both the headstock
and the chuck are clean and free of obstructions
before mounting.
LLiivvee CCeenntteerr
The live center is used to support stock which is
too long to be supported by the chuck alone.
Stock protruding more than three times its diameter should be supported by the live center.
The tailstock barrel and live center have a Morse
taper #2. Before assembling these, insure that
the mating surfaces are “white glove” clean.
These parts will last longer and remain accurate
when properly maintained. Insert the end of the
live center into the tailstock bore until it seats. The
force of a mounted workpiece will fully seat the
taper.
When using a live center, the tailstock barrel
should protrude about
1
⁄2'' and not more than 3''.
SSeeee FFiigguurree 44..
To remove the live center, back the tailstock barrel all the way into the tailstock casting. The live
center will pop out. Be sure to catch it when it
comes out to avoid damaging the tip.
FFiigguurree 44..
Live center installed in tailstock.
NNeevveerr lleeaavvee aa cchhuucckk kkeeyy oorr cchhuucckk rreemmoovvaall
bbaarr iinn tthhee cchhuucckk oorr ssppiinnddllee wwhheenn tthheeyy aarree
nnoott iinn uussee.. IIff tthhee mmaacchhiinnee iiss aacccciiddeennttaallllyy
ssttaarrtteedd wwiitthh tthheessee iinn ppllaaccee,, tthheeyy ccaann
bbeeccoommee pprroojjeeccttiilleess aanndd ccaauussee sseerriioouuss
iinnjjuurryy..

G4000 9'' x 19'' Lathe -11-
The follow rest is normally used with small diameter stock to prevent the workpiece from ''springing'' under pressure from the turning tool. To
install the follow rest:
11..
The follow rest is secured to the saddle with
two cap screws.
SSeeee FFiigguurree 66..
22..
The sliding fingers on the follow rest are
similar to those on the steady rest, and
should be lubricated to prevent premature
wear.
FFiigguurree 66..
Follow rest secured to saddle.
FFiigguurree 55..
Steady rest in place.
SStteeaaddyy RReesstt
The steady rest supports long, small diameter
stock that otherwise could not be turned. The
steady rest can also replace the tailstock to allow
for cutting tool access at the outboard end of your
workpiece.
To mount the steady rest :
11..
Secure to bedway from below with the locking plate.
22..
A single M8-1.25 x 55mm cap screw, along
with a nut and washer, holds the steady
rest in place.
SSeeee FFiigguurree 55..
33..
The sliding fingers on the center steady rest
should receive periodic lubrication while in
use to prevent premature wear.
FFoollllooww RReesstt
Sliding Fingers
Cap Screw
Cap Screws

-12- G4000 9'' x 19'' Lathe
SSppiinnddllee SSppeeeeddss
SSEECCTTIIOONN 55:: CCOONNTTRROOLLSS
FFiigguurree 99..
Belt tensioning lever.
FFiigguurree 88..
Spindle speed portion of machine
plate.
FFiigguurree 77..
Pulley positions in headstock.
The rotating speed of the headstock is controlled
by the positioning of the belts on the pulleys.
SSeeee
FFiigguurree 77..
These are accessed by removing the
cover on the end of the headstock. Refer to the
chart at the end of this manual or the plate on the
headstock (
FFiigguurree 88))
to determine which belt
combinations produce what speeds. The speed
settings available on this machine are 130, 300,
400, 600, 1000 and 2000 RPM.
NNEEVVEERR rreeaacchh aaccrroossss aa rroottaattiinngg cchhuucckk oorr
ppllaattee.. TThhee uussee ooff tthhee BBeelltt TTeennssiioonn RReelleeaassee
LLeevveerr aass aa cclluuttcchh sshhoouulldd bbee rreessttrriicctteedd ttoo
tthhoossee ttiimmeess wwhheenn ssttaarrttiinngg aa hheeaavviieerr ppaarrtt
ttuurrnniinngg aanndd tthheenn aatt vveerryy llooww ssppeeeedd..
This belt tensioning lever on the top of the headstock loosens the drive belt to enable the operator to change speeds.
SSeeee FFiigguurree 99..
The tension
release lever can also be used as a clutch while
the machine is in operation.
A
B
C
Idler Pulley

G4000 9'' x 19'' Lathe -13-
FFiigguurree 1122..
Threading rates portion of machine
plate.
FFeeeedd RRaattee
The lever at the bottom of the headstock
changes the feed rate, or the number of threadsper-inch.
SSeeee FFiigguurree 99..
The lever can be
engaged in any of nine different positions. When
used in conjunction with the interchangeable
gears supplied it is possible to achieve a wide
variety of feed or threading rates.
FFiigguurree 1100..
Feed rate selector lever.
FFiigguurree 1111..
Feed rates portion of machine plate.
The machine plate describes some of the more
typical settings which might be used.
FFiigguurree 1111
shows the feed rate portion of the machine plate.
Looking at the first column, this means that a feed
rate of .0023'' can be achieved by putting the feed
lever in position 9 with a 28 tooth gear installed at
A, and 80 tooth gears at B and C.
Threading feed rates are described in
FFiigguurreess 1122
aanndd 1133..
An 8 thread per inch feed is the result of
having a 60 tooth gear at A, a 30 tooth gear at B,
and the lever in position 1.
A metric 2mm pitch requires the lever to be in
position 7 and would use the same A and B gears
installed above. However the gear between them
changes from a 120 tooth to a 127 tooth. Also
note that the alignment of gears A and B are offset so that A now engages the 127 tooth gear and
B engages the 120 tooth gear. The shaft for position B is provided with a spacer which can be
installed behind the gear to change its position.
FFiigguurree 1133..
Interchangeable gear positions.
A
B
C

-14-
FFiigguurree 1166..
Top slide handwheel.
TToopp SSlliiddee HHaannddwwhheeeell --
The Top Slide
Handwheel controls the position of the cutting
tool relative to the workpiece. The top slide is
adjustable for angle as well as longitudinal travel. It can be adjusted a full 360°, if needed. The
graduated scale is adjustable using the same
method as the other handwheels. Angle adjustment is controlled by cap screws in the base of
the top slide.
FFiigguurree 1166..
FFiigguurree 1155..
Cross slide handwheel.
CCrroossss SSlliiddee HHaannddwwhheeeell --
The Cross Slide
Handwheel moves the top slide toward and away
from the work. Turning the dial clockwise moves
the slide toward the workpiece. The graduated
scale can be adjusted using the same method as
the longitudinal scale.
FFiigguurree 1155..
FFiigguurree 1144..
Longitudinal handwheel.
CCaarrrriiaaggee CCoonnttrroollss
The carriage allows the cutting tool to move
along the length of the lathe bed. The cross slide
allows the cutting tool to travel perpendicular to
the bed. The carriage features a top slide which
allows linear movement of the cutting tool at any
preset angle. This section will review the individual controls on the carriage and provide descriptions of their uses.
LLoonnggiittuuddiinnaall HHaannddwwhheeeell --
The Longitudinal
Handwheel moves the carriage left or right along
the bed. The control is helpful when setting up
the machine for turning or when manual movement is desired during turning operations.
FFiigguurree
1144..
G4000 9'' x 19'' Lathe

G4000 9'' x 19'' Lathe -15-
FFiigguurree 1188..
Threading dial and half nut lever.
HHaallff NNuutt LLeevveerr --
This lever compresses and
releases the half nut that engages the leadscrew.
The lever is only engaged while turning threads
in stock. A lockout device featured in the lever
mechanism engages when the feed selector is
used.
FFiigguurree 1188..
TThhrreeaaddiinngg DDiiaall IInnddiiccaattoorr --
The indicator tells
you when to engage the half nut to begin the
threading process.
FFiigguurree 1188..
LLeevveerr
TThhrreeaadd DDiiaall
NNOOTTIICCEE
Do not simultaneously engage the feed lever
and the threading lever. Doing so will damage
the lathe.
FFiigguurree 1177..
Longitudinal feed lever.
FFeeeedd SSeelleeccttoorr --
Moving this lever upward
engages the automatic longitudinal feed.
FFiigguurree
1177..

-16- G4000 9'' x 19'' Lathe
FFiigguurree 2211..
Detail of tailstock controls.
TTaaiillssttoocckk CCoonnttrroollss
TTaaiillssttoocckk HHaannddwwhheeeell --
Turning the handwheel
advances or retracts the barrel in the tailstock.
The graduated scale on the handwheel is
adjustable.
LLoocckk LLeevveerr --
This lever locks the tailstock barrel
in place.
CCllaammppiinngg NNuutt --
The clamping nut locks the tail-
stock in place on the lathe bed.
AAddjjuussttmmeenntt SSeettssccrreewwss --
These setscrews are
used for aligning the tailstock to the spindle. This
is covered in the next section.
FFiigguurree 2200..
Single tool holder.
SSiinnggllee TTooooll HHoollddeerr --
A single-tool tool holder is
supplied with the Model G4000. A cutting tool
can be installed by tightening or loosening the
clamping bolt.
FFiigguurree 2200..
AAddjjuussttmmeenntt SSccrreewwss
CCllaammppiinngg NNuutt
HHaannddwwhheeeell
LLoocckk LLeevveerr
FFiigguurree 1199..
Four-way tool post.
TTooooll ppoosstt --
A four-way tool post is supplied with
the Model G4000. Cutting tools can be attached
and removed by tightening or loosening the
clamping bolt.
FFiigguurree 1199..

G4000 9'' x 19'' Lathe -17-
TTeesstt RRuunn
NNootteess
Now that the lathe is securely in place and you’ve
read the safety guidelines, it’s time to give the
machine a test run.
Before starting the machine, make sure the
machine is properly grounded and the Power and
Directional Switch is in the ''OFF'' position.
FFiigguurree 2222..
Inspect the machine to ensure that all hand tools
are out of the way, guards are in place and nothing is impeding the movement of the chuck.
Set the switch to position 2. The chuck should be
turning in a counterclockwise direction. If the
direction is reversed, contact our service department for further instruction. If the lathe is running
correctly, take some time to become familiar with
the various controls on the Model G4000. The
controls will be reviewed by location on the
machine, in
SSeeccttiioonn 55..
FFiigguurree 2222..
Power and directional switch.

-18- G4000 9'' x 19'' Lathe
NNOOTTIICCEE
When adjusting gibs, keep in mind that the
goal of gib adjustment is to remove unnecessary sloppiness from the slide’s movement
without causing them to bind. Overtightening
may cause premature wear.
SSppiinnddllee RRPPMM
SSEECCTTIIOONN 66:: AADDJJUUSSTTMMEENNTTSS
FFiigguurree 2233..
Pulley and gear box.
SSppiinnddllee RR..PP..MM.. --
Spindle RPM’s are controlled
through a series of pulleys. To adjust the speed
on the Model G4000, shut the machine off and
unplug it, open the side-cover on the headstock.
FFiigguurree 2233..
Release pressure with the belt tension lever and attach the drive belt to the pulley
combination desired. There is a belt position diagram and a RPM chart on
ppaaggee 2288 aanndd 2299..
FFiigguurree 2244..
Cross slide gib adjustment.
There are two main gib adjustments for the Model
G4000. They are: the cross-slide gib and the
compound slide gib.
CCrroossss--sslliiddee GGiibb --
The gib on the cross slide is
adjusted by the setscrews at the side of the cross
slide. To adjust, loosen the check nuts holding
the setscrews in place, tighten the setscrews until
excess movement is eliminated and tighten the
check nuts.
FFiigguurree 2244..
GGiibbss

G4000 9'' x 19'' Lathe -19-
CCoommppoouunndd GGiibb --
The gib on the top slide is
adjusted by the setscrews at the side of the slide.
As you did with the cross slide, loosen the check
nuts holding the setscrews in place, tighten the
setscrews until excess movement is eliminated
and retighten the check nuts.
FFiigguurree 2255..
FFiigguurree 2255..
Top slide gib adjustment.
FFiigguurree 2266..
Steady rest lock nuts.
SStteeaaddyy//FFoollllooww RReesstt
To adjust the
SStteeaaddyy RReesstt
:
11..
Loosen the lock nuts.
FFiigguurree 2266..
22..
Open the sliding fingers by loosening the
knurled screws far enough to fit around the
workpiece. Secure the steady rest in position.
33..
Tighten the knurled screws so that the fingers are snug but not tight against the
workpiece. Tighten the lock nuts.
44..
Lubricate the sliding points with machine
oil.
The
FFoollllooww RReesstt
is setup in the same manner
except that the place of the third finger is taken up
by the tool bit. The follow rest prevents long,
small diameter pieces from flexing under the cutting pressure from the tool bit.
LLoocckk NNuuttss

-20- G4000 9'' x 19'' Lathe
FFiigguurree 2277..
Truing the back plate.
CChhuucckk RRuunnoouutt
If your lathe use requires a higher level of accuracy, you may find it necessary to true-up the
chuck to ensure minimal runout. To check and
correct runout:
11..
Mount a piece of bar stock in the chuck.
The stock should protrude approximately
2''.
22..
Using a dial indicator, measure the run-out
at the end of the bar. In most cases, the
amount of runout will not exceed .005" over
2" which should be accurate enough for
most applications. If the runout on the
chuck is excessive (e.g., greater than
.006"), the excess runout should be eliminated.
33..
Start by removing the chuck.
44..
Remove the mounting bolts that hold the
back-plate to the chuck. Tap along the
edge of the mounting shoulder until the
chuck and back plate are free of each
other.
55..
Thread the back plate onto the spindle.
66..
Remove about .005'' of material from the
surface that the chuck mounts to. Be careful not to remove any material from the
diameter of the shoulder.
FFiigguurree 2277..
77..
Install the chuck onto the back plate and
check the run-out. If the runout is not within
an acceptable range, it may be necessary
to turn a new shoulder on the back plate.
88..
Before turning a new shoulder, accurately
measure the diameter of the recess in the
back of the chuck.
99..
Remove approximately one half of the
thickness of the shoulder (approximately
1
⁄16"). Remove the same thickness off the
face of the mounting surface.
FFiigguurree 2288..
FFiigguurree 2288..
Turning new shoulder on back plate.

G4000 9'' x 19'' Lathe -21-
FFiigguurree 2299..
Making a dead center.
1100..
The finished diameter of the shoulder
should be .001'' larger than the diameter of
the recess in the chuck. This is a critical
step in minimizing chuck run-out.
1111..
Install the chuck and check for runout.
If the runout is still excessive, the back of the
chuck will need to be resurfaced. To resurface
the back of the chuck:
11..
Using the 4-jaw chuck, mount a piece of bar
stock approximately
3
⁄4'' in dia. protruding
about 2''. Turn about .015'' off the bar stock
so it is true to the lathe’s axis.
22..
Clamp the 3-jaw to the stock you have just
turned.
33..
Remove approximately .005'' from the mating surface on the back of the chuck.
44..
Install the 3-jaw chuck and check for
runout. Check with your dial indicator. If
excessive runout still exists, call our service
department for further instruction.
TTaaiillssttoocckk
The tailstock on the Model G4000 is aligned at
the factory with the headstock. You may want to
take the time to ensure that the tailstock is
aligned to your own desired tolerances. To align
the tailstock:
11..
Center drill a 6'' piece of bar stock on both
ends.
22..
Make a dead center by turning a shoulder
to make a shank. Flip the piece over in the
chuck and turn a 60° point.
FFiigguurree 2299..
As
long as it remains in the chuck, the point of
your center will be accurate to your spindle’s axis. Keep in mind that the point will
have to be re-turned whenever it is
removed and returned to the chuck.

-22- G4000 9'' x 19'' Lathe
NNOOTTIICCEE
DDoo NNoott
forget to lock down the tailstock after
each adjustment.
FFiigguurree 3300..
Bar stock mounted on centers.
FFiigguurree 3311..
Adjusting for headstock end taper.
FFiigguurree 3322..
Adjusting for tailstock end taper.
FFiigguurree 3333..
Tailstock offset adjustment screw.
33..
Place the live center in your tailstock.
44..
Attach a lathe dog to the bar stock and
mount it between the centers.
FFiigguurree 3300
55..
Turn approximately .010" off the diameter.
66..
Measure the stock with a micrometer. If the
stock is fat at the tailstock end, the tailstock
needs to be moved toward you the amount
of the taper.
FFiigguurree3311..
If the stock is thin-
ner
77..
Loosen the tailstock mounting bolt. Adjust
the tailstock offset by the amount of the
taper by turning the adjustment setscrews.
FFiigguurree 3333..
Turn another .020'' off the stock
and check for taper. Repeat as necessary
until the desired amount of accuracy is
achieved.
AAddjjuussttmmeenntt SSccrreeww
TTIIPP
Before making adjustments to the tailstock,
mount a magnet dial indictor so that the dial’s
plunger is on the tailstock barrel.
at the tailstock end, the tailstock needs to be
moved away from you the amount of the
taper.
FFiigguurree 3322..
0
5
45
10
40
35
15
30
20
25
0
5
45
10
40
35
15
30
20
25

G4000 9'' x 19'' Lathe -23-
NNOOTTIICCEE
SSlliipp CClluuttcchh::
To avoid overloading the drive, a
safety slip clutch is fitted in the idler pulley.
Overloading the drive at slower speeds (rattling
noise) means the depth of cut is too deep and
should be reduced.
EExxaammppllee ooff GGeeaarr SSeett--UUpp ttoo CCuutt 1100 TT..PP..ll..::
11..
Loosen cap screw
((11)). FFiigguurree 3355..
22..
Loosen bolt
((22))
. Remove washers
((33))
and
gear
((66))..
33..
Loosen bolts
((77))
to allow movement in the
center gear position.
44..
Loosen nuts
((55))..
Remove washer
((44))
and
gear
((88))..
RReeaasssseemmbbllee aass ffoolllloowwss::
11..
Install 30 tooth gear in position
((66))
with bush-
ings, washer, and bolt.
22..
Install 60 tooth gear in position
((88))..
33..
Center 127 tooth gear remains in place.
44..
Adjust gear to mesh with upper and lower
gear and tighten bolts
((77))..
TThhrreeaadd CCuuttttiinngg
Several different threads can be cut using the
proper combination of gears and settings. When
cutting inch threads, the half nut and threading
dial are used to thread in a conventional manner.
FFiigguurree 3344..
The thread dial chart specifies at
which point a thread can be entered using the
threading dial.
MMeettrriicc TThhrreeaadd CCuuttttiinngg
- The only difference in
metric thread cutting is,
tthhee hhaallff nnuutt mmuusstt
rreemmaaiinn eennggaaggeedd dduurriinngg tthhee eennttiirree tthhrreeaaddiinngg
pprroocceessss..
The thread dial cannot be utilized.
Set the machine up for the desired thread pitch.
Start the machine and engage the half nut. When
the tool reaches the workpiece, it will cut the initial threading pass. When the tool reaches the
end of the cut, stop the machine by turning the
motor off and at the same time back the tool out
of the workpiece so that it clears the thread.
DDoo
nnoott
disengage the half nut lever. Reverse the
motor direction to allow the cutting tool to traverse
back to the starting point. Repeat these steps
until you have obtained the desired results.
FFiigguurree 3344..
Half nut and threading dial.
FFiigguurree 3355..
Gear train adjustment points.
55
44
88
44
77
22
33
66
11

-24- G4000 9'' x 19'' Lathe
SSEECCTTIIOONN 77:: MMAAIINNTTEENNAANNCCEE
LLuubbrriiccaattiioonn
GGeeaarrbbooxx --
Lubrication for the Gearbox is provided through 4 oil caps. Add a squirt or two of oil
after every three-to-four hours of use.
FFiigguurree 3388..
Your Model G4000 will function best when it is
clean and well lubricated. Take the time to wipe
down and oil the machine after use. We recommend using ISO 68 or SAE 20W non-detergent
oil unless otherwise specified.
AApprroonn
- Apply lubrication to the apron through
the ball fitting on the front face of the apron.
FFiigguurree 3366..
EExxtteerrnnaall GGeeaarriinngg --
One-to-two squirts of oil into
the oil ball on the gear hubs.
FFiigguurree 3377..
Apply only a minimal amount of oil to the teeth of
the end gears. Avoid getting oil on the belt or pulleys when lubricating.
FFiigguurree 3366..
Apron lubrication point.
FFiigguurree 3377..
Oil ball on gear hubs.
FFiigguurree 3388..
Gearbox lubrication caps.
AALLWWAAYYSS ddiissccoonnnneecctt tthhee eelleeccttrriicc ppoowweerr ttoo
tthhee mmaacchhiinnee bbeeffoorree sseerrvviicciinngg.. NNEEVVEERR lluubbrrii--
ccaattee yyoouurr llaatthhee wwhhiillee iitt iiss rruunnnniinngg..
Please note that the large toothed pulley that is to
the left of the gears shown in
FFiigguurree 3377
has an oil
ball on the end of the shaft it is mounted to. Make
sure to apply one-to-two squirts into the oil ball.

G4000 9'' x 19'' Lathe -25-
BBeeaarriinngg PPrreellooaadd
This lathe is shipped from the factory with the
bearing preload already set. If the preload
requires resetting for whatever reason, please
contact our service department for further
instruction.
MMoottoorr --
The bearings used in the motor are
shielded and lubricated for life.
WWaayyss,, SSlliiddeess --
Apply oil to the ways and slides
after each use. Wipe the ways with a clean rag
prior to lubrication to ensure that no grime is carried along with your lubricant into friction-sensitive areas. Applying oil to the bedways and other
bare metal parts also protect the lathe from rust
and pitting.
LLeeaadd SSccrreeww --
Be sure to lubricate the leadscrew
and the leadscrew bearing at the tailstock end of
the lathe.
FFiigguurree 3399..
TTaaiillssttoocckk --
The tailstock is fitted with one oiling
point. Apply oil each week, or after every five
uses (depending on the frequency of operation).
FFiigguurree 4400..
FFiigguurree 3399..
Leadscrew bearing lubrication point.
FFiigguurree 4400..
Tailstock oiling point.

-26- G4000 9'' x 19'' Lathe
NNOOTTIICCEE
The Model G4000 was specifically designed
for turning operations.
DDOO NNOOTT MMOODDIIFFYY
AANNDD//OORR UUSSEE TTHHIISS LLAATTHHEE FFOORR AANNYY
OOTTHHEERR PPUURRPPOOSSEE.. MMooddiiffiiccaattiioonnss oorr
iimmpprrooppeerr uussee ooff tthhiiss ttooooll wwiillll vvooiidd tthhee wwaarr--
rraannttyy..
If you are confused about any aspect of
this machine,
DDOO NNOOTT
use it until you have
answered all your questions.
The following pages contain general machine
data, parts diagram, parts lists and Warranty/Return
information for your Model G4000.
If you need parts or help in assembling your
machine, or if you need operational information,
we encourage you to call our 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 section of this manual.
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G4000 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 work
shop is different and safety rules should be considered
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 the General Information.
This machine is designed for highly-skilled individuals who have an understanding of metalworking. We realize there are numerous kinds of
cutters and specialized techniques used to turn
metals. To list all of the techniques necessary to
operate a metal lathe correctly for specific applications would require many volumes. Additional
information sources are necessary to realize the
full potential of this machine. Trade journals, metalworking magazines, and your local library are
good places to start.
SSEECCTTIIOONN 88:: CCLLOOSSUURREE
AAss wwiitthh aallll ppoowweerr ttoooollss,, tthheerree iiss ddaannggeerr
aassssoocciiaatteedd wwiitthh tthhee MMooddeell GG44000000.. UUssee tthhee
ttooooll wwiitthh rreessppeecctt aanndd ccaauuttiioonn ttoo lleesssseenn tthhee
ppoossssiibbiilliittyy ooff mmeecchhaanniiccaall ddaammaaggee oorr ooppeerraa--
ttoorr iinnjjuurryy.. IIff nnoorrmmaall ssaaffeettyy pprreeccaauuttiioonnss aarree
oovveerrllooookkeedd oorr iiggnnoorreedd,, iinnjjuurryy ttoo tthhee ooppeerraa--
ttoorr oorr ootthheerrss iinn tthhee aarreeaa iiss lliikkeellyy..

MACHINE DATA
SHEET
Customer Service #: (570) 326-3806 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901
GRIZZLY MODEL G4000 9" X 19" BENCH LATHE
Design Type ....................................................................................................Bench Model
Overall Dimensions:
Overall Length .......................................................................................................
Overall Width ............................................................................................................
Height ...................................................................................................................... 15"
Bed Width ................................................................................................................
Spindle Bore ..............................................................................................................
Spindle Taper ......................................................................................# 3 Morse Taper
Tailstock Taper ....................................................................................# 2 Morse Taper
Weight (Net) ..................................................................................................... 250 lbs.
Weight (Shipping) ............................................................................................. 300 lbs.
Crate Size .................................................................................. 41" L x 22" W x 19" H
Footprint ..........................................................................................................37" x 16"
Construction: ....................................................................................................... Cast Iron
Capacity:
Swing Over Bed .........................................................................................................
Swing Over Saddle ....................................................................................................
Carriage Travel .........................................................................................................
Max Tool Size ....................................................................................................
Distance Between Centers ......................................................................................
Lead Screw ................................................................................................
361⁄2"
22"
41⁄2"
3
16"
1
⁄2'' x 1⁄2''
9
⁄16'' - 16 TPI
19''
⁄4''
9''
5''
Spindle Thread ..................................................................................... 39 mm X 4 mm
Compound Travel ....................................................................................................
Cross Slide Travel ...................................................................................................
Tailstock Barrel Travel ............................................................................................
Spindle Speeds ..................................................130, 300, 400, 600, 1000, 2000 RPM
Feed Rate Range .......................................................................... 18 @ .0023'' - .013''
Thread Range Inch .......................................................................27 @ 8 TPI - 56 TPI
Thread Range Metric ........................................................................ 11 @ .5 - 3.0 mm
Motor:
Type ............................................................................TEFC Capacitor Start Induction
Horsepower ................................................................................................................3⁄4
Phase ⁄ Hertz .................................................................................Single Phase ⁄ 60Hz
Voltage .................................................................................................................. 110V
Amps ...................................................................................................................... 11.6
RPM ......................................................................................................................1725
Bearings ....................................................................Shielded And Lubricated For Life
Standard Accessories:
..........................................................................4'' 3-Jaw Chuck w ⁄ Two Sets of Jaws
........................................................................
........................................................................................4-Way Tool Post ⁄ Face Plate
.............................................................................................Follow Rest ⁄ Steady Rest
..................................................................................... # 2 Morse Taper Dead Center
..................................................................................... # 3 Morse Taper Dead Center
........................................................................................ # 2 Morse Taper Live Center
.................................................................................................Extra C-Type Tool Post
........................................................................................................Tool Box & Tool Kit
Specifications, while deemed accurate, are not guaranteed.
71⁄4''' 4-Jaw Chuck w ⁄ Reversible Jaws
17⁄8''
41⁄4''
19⁄16''
G4000 9'' x 19'' Lathe -27-
REVISED 5/99

G4000 9'' x 19'' Lathe -29-
CCaallccuullaattiinngg RR..PP..MM..’’ss
PPaarrtt DDiiaammeetteerr CCaasstt IIrroonn,, BBrraassss,, SSttaaiinnlleessss SStteeeell AAlluummiinnuumm
SS..FF..PP..MM.. 4400 5500 6600 7700 8800 9900 110000 111100 112200
00..001166'''' 99777799 1122222244 1144666699 1177111144 1199555588 2222000033 2244444488 2266889933 2299333388
00..003311'''' 44889900 66111122 77333344 88555577 99777799 1111000022 1122222244 1133444466 1144666699
00..006622'''' 22444455 33005566 33666677 44227788 44888899 55550000 66111122 66772233 77333333
00..112255'''' 11222222 11552288 11883333 22113399 22444455 22775500 33005566 33336611 33666677
00..118877'''' 881155 11001199 11222222 11442266 11663300 11883333 22003377 22224411 22444455
00..225500'''' 661111 776644 991177 11007700 11222222 11337755 11552288 11668811 11883333
00..331122'''' 448899 661111 773333 885566 997788 11110000 11222222 11334455 11446677
00..337755'''' 440077 550099 661111 771133 881155 991177 11001199 11112200 11222222
00..443377'''' 334499 443377 552244 661111 669988 778866 887766 996600 11004488
00..550000'''' 330066 338822 445588 553355 661111 668888 776644 884400 991177
00..662255'''' 224444 330066 336677 442288 448899 555500 661111 667722 773333
00..7755'''' 220044 225555 330066 335577 440077 445588 550099 556600 661111
00..887755'''' 117755 221188 226622 330066 334499 339933 447733 448800 552244
11..00'''' 115533 119911 222299 226677 330066 334444 338822 442200 445588
11..112255'' 113366 117700 220044 223388 227722 330066 334400 337733 440077
11..2255'''' 112222 115533 118833 221144 224444 227755 330066 333366 336677
11..337755'''' 111111 113399 116677 119944 222222 225500 227788 330066 333333
11..55'''' 110022 112277 115533 117788 220044 222299 225555 22~~00 330066
11..662255'''' 9911 111188 114411 116655 118888 221122 223355 225599 228822
11..7755'''' 8877 110099 113311 115533 117755 119966 221188 224466 226622
11..887755'''' 8822 110022 112222 114433 116633 118833 220044 222244 224444
22..00'''' 7766 9966 111155 113344 115533 117722 119911 221100 222299
22..2255'''' 6688 8855 110022 111199 113366 115533 117700 118877 220044
22..55'''' 6611 7766 9922 110077 112222 113388 115533 116688 118833
22..7755'''' 5566 7700 8833 9977 111111 112255 113399 115533 116677
33..00'''' 5511 6644 7766 8899 110022 111155 112277 114400 115533
33..2255'''' 4477 5555 7711 8822 9944 110066 111188 112299 114411
33..55'''' 4444 5599 6666 7766 8877 9988 110099 112266 113311
33..7755'''' 4411 5511 6611 7711 8811 9922 110022 111122 112222
44..00'''' 3388 4488 5577 6677 7766 8866 9966 110055 111155
44..55'''' 3344 4422 5511 5599 6688 7766 8855 9933 110022
55..00'''' 3311 3388 4466 5544 6611 6699 7766 8844 9922
55..55'''' 2288 3355 4411 4499 5566 6633 7700 7766 8833
66..00'''' 2266 3322 3388 4455 5511 5577 6644 7700 7766
66..55'''' 2244 2299 3355 4422 4477 5533 5599 6655 7711
77..00'''' 2222 2277 3333 3388 4444 4499 5555 6600 6666
77..55'''' 2200 2266 3311 3366 4411 4466 5511 5566 6611
88..00'''' 1199 2244 2299 3333 3388 4433 4488 5533 5577
EExxaammppllee::
1'' diameter steel using 80 surface feet per minute should be run at 306 r.p.m. To calculate r.p.m.s for diameters not listed here; multiply the surface feet per minute by the diameter of
the stock and divide by 4.

G4000 9'' x 19'' Lathe -35-
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
01 P4000301 SPECIAL WASHER
02 P4000302 STUD BOLT
03 P4000303 AXLE BRACKET
04 P4000304 AXLE
05 P6001 BEARING 6001-2RS
06 P4000306 ROLLER
07 P4000307 SPECIAL WASHER
08 PR03M EXT RETAINING RING12mm
09 PR20M INT RETAINING RING 28mm
10 PW04M FLAT WASHER 10mm
11 PN02M HEX NUT M10-1.5
12 P4000312 SPECIAL WASHER
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
13 P4000313 SPRING
14 P4000314 STUD BOLT
15 P4000315 TENSIONING CAM
16 P4000316 PIN
17 P4000317 SLEEVE
18 PR04M EXT RETAINING RING 6mm
19 P4000319 SET SCREW
20 P4000320 WAVY WASHER
21 P4000321 SNAP RING
22 P4000322 LEVER EXTENSION
23 P4000323 LEVER
24 P4000324 KNOB

G4000 9'' x 19'' Lathe -37-
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
01 P4000401 BRACKET
02 P4000402 T-NUT
03 PW03M FLAT WASHER 6mm
04 P4000404 SHAFT
05 P4000405 BUSHING
06 P4000406 GEAR 127T
07 P4000407 GEAR 120T
08 P4000408 SPECIAL WASHER
09 P4000409 OIL PORT
10 PW04M FLAT WASHER
11 PRP19M ROLL PIN 4 X 14mm
12 P4000412 GEAR 30T
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
13 P4000413 SPACING RING
14 PW03M FLAT WASHER 6mm
15 PSB04M CAP SCREW M6-1.0 x 10mm
16 PLW03M LOCK WASHER 6mm
17 PSB48M CAP SCREW M6-1.0 x 35mm
18 P4000418 GEAR 28T
19 P4000419 GEAR 36T
20 P4000420 GEAR 42T
21 P4000421 GEAR 45T
22 P4000422 GEAR 60T
23 P4000423 GEAR 80T

G4000 9'' x 19'' Lathe -39-
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
01 P4000501 HOUSING
02 PS09M PHLP HD SCR M5-0.8 x 10mm
03 PLW01 LOCK WASHER 5mm
04 P4000504 COVER
05 P4000505 CAPACITOR COVER W/ CLIP
06 P4000506 CAPACITOR 60 MFD RED WIRE
06A P4000506A CAPACITOR 400 BROWN WIRE
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
07 P4000507 STRAIN RELIEF NUT
08 P4000508 STRAIN RELIEF
09 P4000509 SWITCH
10A PS09M PHLP HD SCR M5-0.8 x 10mm
11A G5003
3
⁄4 HP MOTOR
12 PLW01M LOCK WASHER 5mm
13 PN06M HEX NUT M5-0.8
14 PSB50M CAP SCREW M5-0.8 x 10mm

G4000 9'' x 19'' Lathe -45-
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
37 P4000737 GEAR 18T
38 PK05M KEY 4 x 4 x 10mm
39 P4000739 GEAR 42T
40 P4000740 RING
41 P4000741 HALF NUT
42 P4000742 LOCKING CAM
43 P4000743 GUIDE
44 P4000744 EXTENSION RING
45 PSB16M CAP SCREW M4-0.7 x 16mm
46 PSS24M SET SCREW M5-0.8 x 25mm
47 PN06M HEX NUT M4-0.7
48 P4000748 CONTROL BLOCK
49 P4000749 JOINT PLATE
50 PSB39M CAP SCREW M4-0.7 x 20mm
51 PSB24M CAP SCREW M5-0.8 x 16mm
52 P4000752 SCREW
53 P4000753 THREAD DIAL BODY
54 P4000754 WORM GEAR 64T
55 P4000755 SHAFT
56 PK39M KEY 3 x 3 x 10mm
57 PLW04M LOCK WASHER 8mm
58 PN03M HEX NUT M8-1.25
59 P4000759 DIAL
60 P4000760 SCREW
61 P4000761 POINTER
62 P4000762 RIVET
63 PSB49M CAP SCREW M6-1.0 x 60mm
64 P4000764 APRON COVER
65 PW05M FLAT WASHER 4mm
66 PS07M PHLP HD SCR M4-0.7 x 8mm

-50- G4000 9'' x 19'' Lathe
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN
01 P40001001 TAILSTOCK RAM
1A P40001001A LIVE CENTER MT #2
02 P40001002 LEAD SCREW
03 P40001003 BUSHING
04 P40001004 OFF SET INDICATOR PLATE
05 P40001005 HAND WHEEL
06 P40001006 LEVER
07 P40001007 CLAMP
08 PSS05M SET SCREW M5-0.8 x 10mm
09 P40001009 GRADUATED DIAL
10 P40001010 CURSOR
11 P40001011 NUT
12 P40001012 TAILSTOCK BODY
13 P40001013 TAILSTOCK BASE
14 PSS21M SET SCR M8-1.25 x 25mm
15 P40001015 HANDLE
16 P40001016 HANDLE SCREW
17 PK39M KEY 3 x 3 x 10mm
18 PSS20M SET SCREW M8-1.25 x 8mm
19 P40001019 RIVET
20 P40001020 OIL PORT
21 P40001021 CLAMPING PLATE
22 PN03M HEX NUT M8-1.25
23 P40001023 SCREW
24 PW01M FLAT WASHER 8mm
RREEFF PPAARRTT ## DDEESSCCRRIIPPTTIIOONN

-54- G4000 9'' x 19'' Lathe
Grizzly Imports, Inc. warrants every product it sells for a period of
11 yyeeaarr
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.
WWAARRRRAANNTTYY AANNDD RREETTUURRNNSS

WWAARRRRAANNTTYY CCAARRDD
NAME_______________________________________________ PHONE NUMBER___________________
STREET________________________________________________________________________________
CITY_______________________________STATE_________ZIP ___________________________________
MODEL#
G4000 9'' x 19'' Lathe PURCHASED FROM GRIZZLY, BELLINGHAM, WA
OR WILLIAMSPORT, PA
INVOICE#_________________
The following information is given on a voluntary basis. This information will be used for marketing purposes to help
Grizzly develop better products. Your name will be included in our mailing
lliisstt
only. It will not be sold to other com-
panies. of course, all information is strictly confidential.
11..
How did you find out about us?
__Advertisement __Friend __Other____________________
__Catalog __Card deck
22..
Do you think your machine represents good value? __YES __NO
33..
Would you allow us to use your name as a reference for Grizzly customers in your area? __YES __NO
((NNoottee::
Your
nnaammee
will be used a maximum of three
ttiimmeess..))
44..
To which of the following publications do you subscribe? Check all that apply.
__Home Shop Machinist __Rifle Magazine Other ________________
__Projects in Metal __Hand Loader Magazine
__Modeltec __Precision Shooter
__Live Steam __RC Modeler
__Shotgun News __Model Airplane News
55..
What is your annual household income?
__$20,000-$30,000 __$50,001-$60,000 __$80,000-$90,000
__$30,001-$40,000 __$60,001-$70,000 __+$90,000
__$40,001-$50,000 __$70,001-$80,000
66..
To which age group do you belong?
__20-30 __41-50__61-70
__31-40 __51-60__+70
77..
Which of the following machines or accessories do you own? Check all that apply.
__Engine Lathe __Abrasive Cutoff __Sheet Metal Machine
__Band Saw (Metal) __Arc Welder __Other _____________________________
__Band Saw (Wood) __Oxy/Ac. Outfit
__Milling Machine __Air Compressor
__Bench Grinder __Drill Press
88..
How many of the machines you checked in Question 7 are Grizzly machines? ______________________
99..
Which of the following tooling and accessories do you own? Check all that apply.
__Milling Vises __Collet Closer __Digital Readout
__Indexing Head __Taper Attachment __Tool Post Grinder
__Rotary Table __Boring Head __Other _________________________________________
1100..
In the space below, list three tools you would like Grizzly to carry.
1111..
Of all the mail order metalworking company’s you have purchased from, how do you rate Grizzly in terms of overall customer satisfaction?
__The best __Above average __Average
__Below average __The worst
1122..
Comments________________________________________________________________________________
Cut along dotted line

FOLD ALONG DOTTED LINE
FOLD ALONG DOTTED LINE
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PP..OO.. BBOOXX 22006699
BBEELLLLIINNGGHHAAMM,, WWAA 9988222277--22006699
Place
Stamp
Here
TAPE ALONG EDGES--PLEASE DO NOT STAPLE
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