Craftsman 4 Gallon Manual

							  
SEARS 
OWNERS 
MANUAL 
MODELNO. 
919.176850 
IMPORTANT: 
ReadtheSafetyGuidelines 
andAllInstructions 
CarefullyBeforeOperating CRAFTSMANAIRCOMPRESSOR 
ASSEMBLY 
OPERATION 
MAINTENANCE 
REPAIRPARTS Recordinthespacesprovided, 
(1)Themodelnumberwhichcanbe 
foundonthelabelontherearofthe 
airtank. 
(2)Thecodenumberwhichcanbe 
foundonthefoillabelontherearof 
theairtank, 
(3)TheManufacturersNumber(ASME 
CodeCompressorsonly)islocated 
onthemetaldataplatewhichis 
weldedontothebacksideoftheair 
tank.(Thisdataplateispaintedthe 
samecolorasthetank.) 
(4)TheMotorManufacturersname 
whichislocatedonthemotorlabel 
orspecificationplate. 
(5)TheMotorMfg.number-also 
locatedonthemotorlabelorspecifi- 
cationplate. 
Retainthesenumbersforfuture 
reference, 
ModelNo, 
CodeNo. 
Mfg.No.__ 
MotorMfg,Name 
MotorMfg.No. 
81-30-14-7-B3/89 Sears,RoebuckandCo.,Chicago,IL60684U.S.A.  
						

							  
TABLEOFCONTENTS 
Page 
WARRANTY..................................................................3 
SAFETYGUIDELINES.......................................................3 
WARNINGCHART...........................................................3 
SPECIFICATIONCHART.....................................................5 
GLOSSARY..................................................................5 
ACCESSORIESFORUSEWiTHSEARSAIRCOMPRESSORS...........6 
GENERALINFORMATION...................................................6 
DESCRIPTIONOFOPERATION.............................................6 
ASSEMBLYINSTRUCTIONS.................................................7 
ItemsYouWil!NeedtoAssemblyYourCompressor...............................7 
InstallingHandle.............................................................7 
InstallingRubberFootStripandWheels.........................................8 
InstallingShut-OffValve......................................................8 
INSTALLATIONANDBREAK-INPROCEDURES............................8 
LocationofAirCompressor....................................................8 
ExtensionCords.............................................................8 
LubricationandOil...........................................................8 
GroundingInstructions........................................................9 
Break-inProcedures.........................................................9 
OPERATINGPROCEDURES................................................9 
MAINTENANCE..............................................................10 
AirFilter-InspectionandReplacement.........................................10 
Oil-CheckingandChanging..................................................10 
AirTank-DrainingWater.....................................................10 
CheckValve-Replacement...................................................10 
SafetyValve-Inspection.....................................................10 
Motor......................................................................10 
Belt-Replacement...........................................................11 
ToAdjustBeltTension........................................................11 
PulleyandFlywheel-Alignment...............................................1! 
STORAGE.........................................................11 
TROUBLESHOOTINGGUIDE................................................11 
AIRCOMPRESSORDIAGRAM-AItModels................................14 
PartsList...................................................................17 
AIRCOMPRESSORPUMPDIAGRAM=....................................15 
PartsList...................................................................17 
HOWTOORDERREPAIRPARTS...........................................18  
						

							  
FULLONEYEARWARRANTY 
ONAIRCOMPRESSORS 
Ifthisaircompressorfailsduetoadefectinmaterialorworkmanshipwithinoneyearfromthedateof 
purchase,returnittothenearestSearsServiceCenter/DepartmentthroughouttheUnitedStatesand 
Searswillrepairit,freeofcharge. 
Ifthisaircompressorisusedforcommercialorrentalpurposes,thewarrantywillapplyforninetydays 
fromthedateofpurchase. 
Thiswarrantygivesyouspecificlegalrightsandyoumayhaveotherrightsthatvaryfromstateto 
state. 
Sears,RoebuckandCo.,SearsTower,Dept.698/7131CR-W,Chicago,IL60684 
SAFETYGUIDELINES 
Thismanualcontainsinformationthatisimportantforyoutoknowandunderstand.Thisinformation 
relatestoprotectingyoursafetyandpreventingequipmentproblems.Tohelpyourecognizethis 
information,weusethefollowingsymbols.Pleasereadthemanualandpayspecialattentionto 
sectionsheadedbythesesymbols. 
URGENTSAFETYINFORMATION-A 
HAZARDTHATWILLCAUSESERIOUS 
INJURYORLOSSOFLIFE. IMPORTANTSAFETYINFORMATION-A 
HAZARDTHATMIGHTCAUSESERIOUS 
INJURYORLOSSOFLIFE. 
Informationforpreventingdamageto 
equipment. NOTE 
Informationthatyoushouldpayspecialatten- 
tionto. 
WARNING 
HAZARDSCANOCCURIFEQUIPMENTISNOTUSEDPROPERLY, 
PLEASEREADTHEFOLLOWINGCHART. 
WHATTOWHATCOULDHAPPENHOWTOPREVENTIT 
LOOKFOR 
Compressed 
Air Compressedaircanpropeldust,dirtorloose 
particlesitcomesincontactwith. 
Toomuchairpressureappliedtoairtoolsor 
accessoriescancausedamageorriskof 
bursting. Neverpointanynozzleorsprayertowardaperson 
oranypartofthebody. 
Alwayswearsafetygogglesorglasseswhenusing 
theaircompressor. 
Alwaysturntheaircompressoroffandreleaseair 
pressurefromhosebeforeattachingorremoving 
accessories. 
Checkthemanufacturersmaximumpressurerat- 
ingforairtools,accessories,ortheitemyouwil! 
pressurize.Anairregulatormustbeaddedforuse 
withthoseitemshavingamaximumpressurerat- 
ingtessthan125psL  
						

							  
m_..... 
WHATTO 
LOOKFOR 
Unsuita6te 
S_vents 
Electricity 
Moving 
Parts 
ToxicVapors 
AirTank WHATCOULDHAPPENHOWTOPREVENTIT 
Thesolvents1,1,1-TrichloroethaneandMethy- 
leneChloridecanchemicallyreactwithaiumi- 
numusedinpaintsprayguns,paintpumps,etc., 
andcauseanexplosion.Thesesolventscan 
alsoreactwithgalvanizedcomponentsand 
causecorrosionandweakeningofparts.This 
doesnotaffectyouraircompressor-butitmay 
affecttheequipmentbeingused. 
Youraircompressorispoweredbyelectricity. 
Likeanyotherelectricallypowereddevice,ifitis 
notusedproperlyitcancauseelectricalshock. 
Thiscompressorcyclesautomaticallywhenthe 
switchisintheOn-Autoposition.Ifyou 
attemptrepairormaintenancewhilethecom- 
pressorisoperating,orwiththeswitchinthe 
On-Autoposition,youcanexposeyourselfto 
movingparts.Thesemovingpartscancause 
seriousinjuryordamage,iftheycomeintocon- 
tactwithyouoryourclothing. 
Itisnormalforcompressedairtocontaintoxicor 
irritatingvapors.Suchvaporsareharmfulif 
inhaled. 
Certainmaterialsyouarespraying(likepaint, 
weedkiller,sandorinsecticide)canbeharmful 
ifyouinhalethem. Ifthematerialyouintendtospraycontainsthesol- 
ventslistedatleft(readthelabelordatasheet),do 
notuseaccessoriesthatcontainaluminumorgal- 
vanizedparts.Youmusteitherchangethematerial 
youintendtospray,oruseonlystainlesssteel 
sprayequipment. 
Alwaysunplugtheaircompressorpriortomainte- 
nanceorrepair. 
Neverusetheaircompressoroutdoorswhenitis 
raining. 
Alwaysplugthecordintoanelectricaloutletwith 
thespecifiedvoltageandadequatefuse 
protection. 
Alwaysunplugtheunitandreleaseairpressure 
fromthetankandanyaccessoriesbeforedoing 
repairormaintenance. 
Neveroperatethecompressorwiththebeltguard 
removed. 
Neverdirectlyinhalethecompressedairproduced 
bythisunit. 
Readlabelsandsafetydataforallmaterialsyou 
spray.Followal!safetyprecautions. 
Useamaskorrespiratorifthereisachanceof 
inhalingtoxicsprayedmaterials.Masksand 
respiratorshavelimitsandwillonlyprovideprotec- 
tionagainstsomekindsandlimitedamountsof 
toxicmaterial.Readmaskandrespiratorinstruc- 
tionscarefully.Consultwithasafetyexpertor 
industrialhygienistifyouarenotsureabouttheuse 
ofacertainmaskorrespirator. 
Modificationstotheaircompressorcancause 
theairtanktoruptureorexplode. 
Changingtheairtankwillcauseittoweaken. 
Thetankcanruptureorexplode. Donotadjust,removeortamperwiththesafety 
valveorpressureswitch.Ifsafetyvalveorpressure 
switchreplacementisnecessary,apartwiththe 
samepressureratingmustbeused. 
ForServiceReplacementuseonlythemotor,pul- 
leyandbeltdesignedasstandardservicereplace- 
mentpartsindicatedinthepartslist.Useof 
improperpartscouldcauseoverloadingofyour 
unitandelectricalsupply. 
Donotsubstituteagasengineforthemotor..,this 
compressorwasnotdesignedtobepoweredbya 
gasolineengine. 
Neverreplacethecompressorpumpwithadiffer- 
entmodel. 
Neverincreasethecompressorpumpspeed. 
Donotfixmountorpermanentlyattachthecom- 
pressorfeet.Thisoutfitisintendedforportableuse 
(withwheels)only. 
Neverdrillinto,weld,orinanywaymodifytheair 
tank.Donotrepairaleakingtank,itmustbe 
replaced. 
Neverreplacetheairtankwithadifferentmodelor 
alargertank.  
						

							  
WHATTOWHATCOULDHAPPENHOWTOPREVENTIT 
LOOKFOR 
HotPartsThecompressorheadandtubesgethotwhenNevertouchtheaircompressorheadortubesdur- 
theaircompressorisrunning.Ifyoutouchthem,ingorimmediatelyafteroperation. 
youcanbeseriouslyburned. 
FlammableItisnormalforthemotorandpressureswitchtoOperatethecompressorinwellventilatedareas 
Vaporssparkwhenthecompressorstartsorstops.Athatarefreeofgasoline,flammablepaintorsolvent 
sparkcanigniteflammablevaporsfromvapors. 
gasoline,solventsorsomepaintsandcauseaIfsprayingaflammablematerial-provideample 
fireorexplosion. 
ventilation.Neversprayinaclosedarea.There 
mustbeaflowoffreshairatalltimes. 
SPECIFICATIONCHART 
ModelNo.919.176850 
Horsepower5 
DisplacementCFM15.2 
Bore27/8 
Stroke2 
Voltage-SinglePhase240 
MinimumBranchCircuitRequirement1_amp 
*FuseTypeFusetron 
TypeT 
AirTankCapacity-Gallons20ASME 
ApproximateCut-inPressure100 
ApproximateCut-outPressure125 
SCFM_40psig11.3 
SCFM(_90psig9.3 
SCFM#!125psig8.0 
U,L.ListedYes 
*Acircuitbreakerispreferred.Useonlyafuseorcircuitbreakerthatisthesameratingasthebranchcircuittheair 
compressorisoperatedon.Iftheaircompressorisconnectedtoacircuitprotectedbyfuses,usedualelementtimedelay 
fuses(BussFusetronTypeTonly). 
Thisaircompressorcanbeoperatedona15 
ampcircuitif: 
1.Voltagesupplytocircuitisnormal. 
2.Circuitisnotusedtosupplyanyother 
electricalneeds(lights,appliances,etc.) 
3.Extensioncordscomplywithspecifica- 
tionsinownersmanual. 4.Circuitisequippedwith15ampcircuit 
breakeror15ampFuestronTypeTtime 
delayfuse. 
Ifanyoftheaboveconditionscannotbemet,orifopera- 
tionofthecompressorrepeatedlycausesinterruptionof 
thepoweritmaybenecessarytooperateitfroma20 
ampcircuit.Itisnotnecessarytochangethecordsetif 
thischangeismade. 
GLOSSARY 
CFM.Cubicfeetperminute. 
SCFM:Standardcubicfeetperminute;aunitofmeas- 
ureofairdelivery. 
PSIG.Poundspersquareinchgauge;aunitofmeasure 
ofpressure. 
ASME:AmericanSocietyofMechanicalEngineers; 
made,tested,inspectedandregisteredtomeetthe 
standardsoftheASME. 
U.L.Listed:UnderwriterLaboratories;Samplesof 
compressoroutfits,takenfromproduction,weresub= 
mittedtoU.L.andfoundtocomplywiththeirrequire- 
mentsfordesignandperformance, Cut-InPressure:Whilethemotorisoff,airtankpres- 
suredropsasyoucontinuetouseyouraccessory.When 
thetankpressuredropstoacertainlowlevelthemotor 
willre-startautomatically.Thelowpressureatwhichthe 
motorautomaticallyre-startsiscalledcut-inpressure. 
Cut-OutPressure:Whenyouturnonyouraircompres- 
soranditbeginstorun,airpressureintheairtankbegins 
tobuild.Itbuildstoacertainhighpressurebeforethe 
motorautomaticallyshutsoff-protectingyourairtank 
frompressurehigherthanitscapacity.Thehighpres. 
sureatwhichthemotorshutsoffiscaUedcut-ou 
pressure.  
						

							  
ACCESSORIESFORUSEWITHSEARSAIRCOMPRESSORS 
Tilefollowingaccessoriesareavailablethroughthecurrentgeneralsalescatalogoratfull-lineSearsstores. 
*SPRAYGUNS 
.BLOWGUNS 
-AIRCAULKINGGUNS 
,AIRPOWEREDWASHERGUNS 
-SANDBLASTERS 
,AIRBRUSHES 
-AIRLINEFILTERS 
*TIREAIRCHUCKS -PAINTTANKS 
*AIRTANKS 
*INFLATORKITS 
.QUICKCONNECTORSETS 
(varioussizes) 
oVISCOSIMETER 
*AIRPRESSUREREGULATORS 
*OILFOGLUBRICATORS *AIRTOOLS: 
Sanders 
Drills 
Impactwrenches 
Hammers 
,AIRHOSE: 
1/4,5/16OR3/8LD. 
invariouslengths. 
GENERALINFORMATION 
_ouhavepurchasedanaircompressorunitconsistingof 
a2cylinder,singlestageaircompressorpump,anair 
:ank,airhose,wheels,handle,airchuckandassociated 
:ontrolsandinstruments. 
Youraircompressorcanbeusedforoperatingpaint 
sprayguns,airtools,caulkingguns,greaseguns,air 
3rushes,sandblasters,powerwashers,inflatingtires 
andplastictoys,sprayingweedkillers,insecticides,etc. forremovalofmoistureandoilvaporincompressedair 
whenapaintspraygunisused. 
Anin-linelubricatorisusuallyrequiredforairtoolsto 
prolongtootlife. 
Separateairtransformerswhichcombinethefunctions 
ofairregulationand/ormoistureanddirtremovalshould 
beusedwhereapplicable. 
Fhismodelisnotequippedwithapressureregulator.An 
_irpressureregulatorisusuallynecessaryformostof 
:heseapplications.AnAirLineFilterisusuallyrequired TheseaccessoriescanbepurchasedfrommostSears 
storesorthroughtheSearsGeneralcatalogorPower 
Toolcatalog. 
DESCRIPTIONOFOPERATION 
\ V/eVE 
AirCompressorPump:Tocompressair,thepistons 
moveupanddowninthecylinders.Onthedownstroke, 
airisdrawninthroughtheairintakefilterandthen 
throughtheairintakevalves.Theexhaustvalveremains 
closed.Ontheupstrokeofthepiston,airiscompressed. 
Theintakevalvescloseandcompressedairisforced 
outthroughtheexhaustvalve,throughtheoutlettube, 
throughthecheckvalveandintotheairtank.Workingair 
isnotavailableuntilthecompressorhasraisedairtank 
pressureabovethatrequiredattheairoutlet. 
CheckValve:Whentheaircompressorisoperating,the 
checkvalveisopen,allowingcompressedairtoenter 
theairtank.Whentheaircompressorreachescut-out 
pressure,thecheckvalvec!oses,allowingairpressure 
toremaininsidetheairtank. PressureSwitch:Thepressureswitchautomatically 
startsthemotorwhentheairtankpressuredropsbelow 
thefactorysetcut-inpressure.Itstopsthemotorwhen 
theairtankpressurereachesthefactorysetcut-out 
pressure. 
PressureReleaseValve:Thepressurereleasevalve 
locatedonthesideofthepressureswitch,isdesignedto 
automaticallyreleasecompressedairfromthecom- 
pressorheadandtheoutlettubewhentheaircompres- 
sorreachescut-outpressureorisshutoff.Iftheairis 
notreleased,themotorwilltrytostart,butwilbeunable 
to.Thepressurereleasevalveallowsthemotortore- 
startfreely.Whenthemotorstopsrunning,airwillbe 
heardescapingfromthevalveforafewseconds.Noair 
shouldbeheardleakingfromthevalvewhenthemotoris 
running.  
						

							  
SafetyValve:ifthepressureswitchdoesnotshutoffthe 
aircompressoratornearitscut-outpressuresetting,the 
safetyvalvewillprotectagainsthighpressurebypop- 
pingoutatitsfactory-setpressure(slightlyhigherthan 
thepressureswitchcut-outsetting). Shut-OffValve:Turntheknobcounterclockwiseto 
openthevalveandclockwisetoclose, 
ASSEMBLYINSTRUCTIONS 
itemsYouWillNeedToAssembleYour 
Compressor 
•16oz,compressoroil,Sears9-16426orSAE20-20W 
SForSGmotoroil 
•pipethreadsealant 
.anadjustablewrenchforattachingtheshut-offvalve 
-a9/16socketoropen-endwrenchforattachingthe 
wheelsandhoseadapter 
InstallingHandle 
WARNINGI BENT 
TABS 
THEWHEELSANDHANDLEDONOTPRO- 
VIDEADEQUATECLEARANCE,STABILITY 
ORSUPPORTFORPULLINGTHEUNITUP 
ANDDOWNSTAIRSORSTEPS.THEUNIT 
MUSTBELIFTEDORPUSHEDUPARAMP. 
DONOTLIFTTHEUNITBYTHEMANIFOLD 
ASSEMBLY.THEUNITCANBEDAMAGED. 
1.Inserttheopenendofthehandleunderthesaddle 
(Fig.1).Beforeattachinghandle,youmayhavetopull 
theopenendsofthehandleapartsotheyfittightly 
againstthesideofthesaddle.Lookinginfromthe 
openendofthesaddle,positionthehandletowards 
thetwobenttabs,ontheinsidewailsofthesaddle. 
Slowlypushtheopenendsofthehandleontoboth 
tabsatthesametime(Fig.2).Continuepushingthe 
handleintothesaddleuntiltheholesonthesideofthe 
saddleandhandleareinline. 
2.Guidethestraightendofeachretainingctipthrough 
thesaddleholeandbothhandleholes(Fig.3). 
3.Rotateeachretainingclipclockwiseandpressdown 
untilitsnapsintoplaceoverthepullhandle(Fig.4). 
4.Ifthehandlehasexcessivemovement,itisimproperly 
installed.Checkthefollowing: 
A.Arebothtabsinsidethehandle(Step#1)? 
B.Doeseachclippassthroughboththesaddleand 
handle(Step#2)? SENTTAB 
(ONEON 
EACHSIDE) 
HANDLE 
INSERTED 
ON 
TABS SADDLE 
FIG.1 
OPENEND 
OFHANDLE 
FIG.2 
FiG.3 
7  
						

							  
FIG.4 
installingRubberFootStripandWheels 
L.........] 
Itmaybenecessarytobraceorsupportone 
endoftheoutfitwhenattachingthewheels 
becausetheaircompressorwillhavea 
tendencytotip. 
1.Removetheprotectivepaperstripfromtheadhesive- 
backedrubberfootstrip.Attachtherubberfootstripto 
thebottomoftheairtankleg.Pressfirmlyintoplace. 
(Seepage14keyno.39.) 
_-.Thelegbracketontheundersideoftheaircompres- 
sortankhas2holesoneachsideformountingthe 
wheels.Placeoneshoulderboltthroughtheholeina 
wheel.Next,pushtheboltthroughtheLOWERholeof 
thelegbracketandscrewononehexlockingnut.The 
speciallockingnutdoesnotturnfreely.Tightenthe 
nutfirmlyuntilitcontactstheleg.Seepg.14.The 
outfitwillsetlevelifthewheelsareproperlyinstalled. InstallingShut-offValve 
ADAPTER 
SHUT-OFF 
VALVE 
SWIVEL 
CONNECTION 
Applyasmallamountofpipesealant(notsupplied)to 
thetaperedpipethreadsontheadapterandtighteninto 
themanifold.Installtheswivelconnectionendofthe 
shut-offvalvetothestraightthreadedendoftheadapter 
(pipesealantisnotrequired)andtightenthisconnec- 
tion.Seephotoabove. 
INSTALLATIONANDBREAK-INPROCEDURES 
LocationoftheAirCompressor 
Operatetheaircompressorinaclean,dryandwell 
ventilatedarea.Theairfiltermustbekeptclearof 
obstructionswhichcouldreduceairdeliveryoftheair 
compressor.Theaircompressorshouldbelocatedat 
least12awayfromwallsorotherobstructionsthatcould 
interferewiththeflowofairthroughthefanbladedfly- 
wheel.Theaircompressorcrankcaseandheadare 
3esignedwithfinstoprovidepropercooling. 
Ifhumidityishigh,aSearsairfiltercanbeinstalledto 
removeexcessivemoisture,andoilvaporfromtheair. 
Closelyfollowtheinstructionspackagedwiththefilter 
Forproperinstallation,itmustbeinstalledascloseas 
oossibletotheaccessory. 
ExtensionCords 
Foavoidvoltagedropandpowerlosstothemotor,use 
._xtraairhoseinsteadofanextensioncord. 
fanextensioncordmustbeused: 
useonlya3-wireextensioncordthathasa3-blade 
groundingpluganda3-slotreceptaclethatwillaccept 
theplugontheproduct. 
makesuretheextensioncordisingoodcondition. 
theextensioncordshouldbenolongerthan50feet. -theminimumwiresizeis12gauge(AWG)Sears#9- 
83606,12g.x50tg.ext.cordatyourlocalSearsServ- 
iceCenter.(Wiresizeincreasesasgaugenumber 
decreases.10AWGand8AWGmayalsobeused.DO 
NOTUSE14AWGor16AWG.) 
LubricationandOil 
Compressorsareshippedwithoutoil.Do 
notattempttooperatethisaircompressor 
withoutfirstaddingoiltothecrankcase, 
Placeunitonalevelsurface.Removeoilfillplug(Keyno. 
77,pg.15)andslowlyaddaspecialcompressoroilsuch 
asSears9-16426orSAE20-20WSForSGmotoroil 
untilitisevenwiththetopoftheoilfillhole.(Itmustnotbe 
allowedtobelowerthan%-6threadsdown-fromthe 
top,atanytime.)Whenfillingthecrankcase,theoilflows 
veryslowly.Iftheoilisaddedtooquickly,itwilloverflow 
andappeartobefull.Crankcaseoilcapacityis!6fluid 
ounces.Underwinter-typeconditionsuseSAE10Woil. 
Multi-viscosityoil,10W30,willleavecarbondepositson 
criticalcomponentsreducingperformanceandcom- 
pressorlife.Replaceoilfillplug.  
						

							  
Groundinginstructions 
WARNING1 
III 
IMPROPERGROUNDINGCANRESULTIN 
ELECTRICALSHOCK.INTHEEVENTOFA 
SHORTCIRCUIT,GROUNDINGREDUCES 
THERISKOFSHOCKBYPROVIDINGAN 
ESCAPEWIREFORTHEELECTRICCUR- 
RENT.THISAIRCOMPRESSORMUSTBE 
PROPERLYGROUNDED. 
1.Theaircompressorisequippedwithacordhavinga 
groundingwireandanappropriategroundingplug. 
Theplugmustbeusedwithanoutletthathasbeen 
installedandgroundedinaccordancewithalllocal 
codesandordinances.Theoutletmusthavethe 
sameconfigurationastheplug.DONOTUSEAN 
ADAPTER. 
2.Donotmodifytheplugthathasbeenprovided,Ifit 
doesnotfittheavailableoutlet,thecorrectoutlet 
shouldbeinstalledbyaqualifiedelectrician. 
3.Inspecttheplugandcordbeforeeachuse.Donotuse 
iftherearesignsofdamage. 
ELECTRICALSHOCKHAZARD.WHEN 
REPAIRINGORREPLACINGTHECORDOR 
PLUG,KEEPTHEGROUNDINGWIRESEPA- 
RATEFROMTHECURRENT-CARRYING 
WIRES.NEVERCONNECTTHEGROUND- 
INGWIRETOAFLATBLADEPLUGTER- 
MINAL.(THEGROUNDINGWIREHAS 
INSULATIONWITHANOUTERSURFACE 
THATISGREEN-WITHORWITHOUTYEL- 
LOWSTRIPES.) Ifthesegroundinginstructionsarenotcompletely 
understood,orifyouarenotsureyourcompressoris 
properlygrounded,havetheinstallationcheckedbya 
qualifiedelectrician. 
PLUGOUTLET 
GROUND 240VOLT,20AMPPLUG 
GROUNDINGJ 
PiN OUTLET 
Break-inProcedures 
Seriousdamagemayresultifthefollowing 
break-ininstructionsarenotclosely 
followed. 
Thisprocedureisrequiredonlyonce,beforetheaircom- 
pressorisputintoservice. 
!.SetthepressureswitchlevertotheOFFposition. 
2.Plugthepowercordintothecorrectbranchcircuit 
receptacle, 
3.Opentheshut-offvalve,turnitcounterclockwiseto 
open,openingitfully,topreventairpressurebuild-up 
inthetank, 
4.MovethepressureswitchlevertoON/AUTO.ThE 
compressorwillstart. 
5.Runthecompressorfor30minutes.Makesurethe 
shut-offvalveisopenandthereisnotankpressur( 
build-up, 
6.After30minutes,closetheshut-offvalvebyturnin(. 
theknobclockwise.Theairreceiverwillfilltocut-ou 
pressureandthemotorwillstop.Thecompressori: 
nowreadyforuse. 
OPERATINGPROCEDURES 
1.Beforeattachinganairhoseoraccessory,makesure 
thepressureswitchleverisintheOFFposition. 
Closetheshut-offvalvebyturningtheknob 
clockwise. 
2.Attachhoseandaccessory. 
WARNING 
IIII 
TOOMUCHAIRPRESSURECAUSESA 
HAZARDOUSRISKOFBURSTING.CARE- 
FULLYFOLLOWSTEPS3THROUGH11 
EACHTIMETHECOMPRESSORISUSED. 
3.Checkthemanufactursmaximumpressureratingfor 
airtoolsandaccessories.Theregulatoroutletpres- 
suremustneverexceedthemaximumpressurerat- 
ing.Onthismodel,aregulatormustbeinstalled 
beforeusingaccessoriesratedatlessthan125 
psig. Compressedairfromtheoutfitmaycontain 
watercondensationandoilmist,Donot 
sprayunfilteredairatanitemthatcouldbe 
damaged.Someairoperatedtoolsor 
devicesmayrequirefilteredair.Readthe 
instructionsfortheairtoolordevice. 
4.TurnthepressureswitchlevertotheON-AUTOposi 
tionandallowtankpressuretobuild.Themotorwil 
stopwhentankpressurereachescut-outpressure. 
5.Opentheshut-offvalve.Youroutfitisreadyforuse. 
WhenYouAreFinished: 
6.SetthepressureswitchlevertoOFR 
7,Closetheshut-offvalve. 
8.Removetheairtooloraccessory. 
9.Opentheshut-offvalveandallowtheairtoslow 
bleedfromthetank.Closetheshut-offvalvewh_ 
tankpressureisapproximately20psi.  
						

							  
WATERWILLCONDENSEINTHEAIRTANK. 
tFNOTDRAINED,WATERWILLCORRODE 
ANDWEAKENTHEAIRTANK;CAUSINGA 
RISKOFAIRTANKRUPTURE. 
10.Withtankpressureatapproximately20psi.,open 
thedraincockandallowmoisturetodrain.Turndrain 
T-handlecounterclockwisetoopen. NOTE 
Ifthedraincockvalveisplugged,releaseallair 
pressure.Thevalvecanthenberemoved, 
cleaned,andreinstalled. 
11.Afterthewaterhasbeendrained,closethedrain 
cock(turnclockwise).Theaircompressorcannow 
bestored. 
MAINTENANCE 
WARNINGI 
UNITCYCLESAUTOMATICALLYWHENPOWERtSON.WHENDOINGMAINTENANCE,YOUMAY 
BEEXPOSEDTOVOLTAGESOURCES,COMPRESSEDAIRORMOVINGPARTS.PERSONAL 
INJURIESCANOCCUR.BEFOREPERFORMINGMAINTENANCEORREPAIRUNPLUGTHEUNIT 
ANDBLEEDOFFALLAIRTANKPRESSURE.NEVEROPERATETHEUNITWITHTHEBELT 
GUARDREMOVED. 
AirCompressor 
Acleanaircompressorrunscoolerandprovideslonger 
service.Cleanorblowofffinsandanyotherpartsofthe 
aircompressorthatcollectdustordirt.Donotplace 
rags,containersorothermaterialonoragainsttheventi- 
lationopeningsinthebeltguard.Adequateventilationis 
necessarytomaintainproperaircompressoroperating 
temperature, 
AirFilter-InspectionandReplacement 
NOTE 
Keeptheairfiltercleanatalltimes.Donotoper- 
atethecompressorwiththeairfilterremoved. 
Adirtyairfilterwillnotallowthecompressortooperate 
atfullcapacity.Beforeyouusethecompressor,check 
theairfiltertobesureitisclean. 
Ifitisdirty,replaceitwithanewfilter.Thefiltermaybe 
removedbyusingapairofneedlenosedpliersora 
screwdriver.Pullorpryouttheoldfilter.Pushinthenew 
airfilter. 
Oil-CheckingandChanging 
Overfillingwithoilwillcausepremature 
compressorfailure.Donotoverfill= 
Checkoillevelinthecrankcasedaily.Removetheoilfill 
plug(Keyno.77,pg.15).Theoillevelshouldbeeven 
withthetopofthefillholeandmustnotbeallowedtobe 
lowerthan3/8fromthetop(6threads)atanytime.Itis 
recommendedthattheoilbechangedafterevery100 
hoursofoperation.Todraintheoil,removetheoildrain 
plugandcollecttheoilinasuitablecontainer.Besureto 
replacetheplugsecurelybeforeaddingnewoilUsea 
specialcompressoroilsuchasSears9-16426orSAE 
20-20WSForSGmotoroil(Crankcaseoilcapacityis16 
fluidounces.)UnderextremewinterconditionsuseSAE 
b 10W.Multi-viscosityoil(10W30)willleavecarbon 
depositsoncriticalcomponentswhichwillreduceper- 
formanceandcompressorlife. 
CheckValve-Replacement 
1.Releaseairpressurefromtheairtank. 
2.Loosenthetopandbottomtubenutsandremovethe 
outlettube, 
3.Unscrewthecheckvalve(turncounter-clockwise) 
usingsocketwrench.(7/8). 
4.Checkthatthevalvediscmovesfreelyandthatthe 
springholdsthediscintheupper,closedposition. 
Thecheckvalvemaybecleanedwithasolvent-such 
aspaintthinnerorcarburetorcleaner. 
5.Applysealanttothecheckvalvethreads.Reinstallthe 
checkvalve(turnclockwise).Donotovertighten. 
6.Replacetheoutlettubeandtightentopandbottom 
tubenuts. 
SafetyValve-Inspection 
WARNING 
J 
IFTHESAFETYVALVEDOESNOTWORK 
PROPERLYOVER-PRESSURIZATIONMAY 
OCCUR,CAUSINGAIRTANKRUPTUREOR 
EXPLOSION.OCCASIONALLYPULLTHE 
RINGONTHESAFETYVALVETOMAKE 
SURETHATTHESAFETYVALVEOPER- 
ATESFREELY.IFTHEVALVEISSTUCKOR 
DOESNOTOPERATESMOOTHLY,ITMUST 
BEREPLACEDWITHAVALVEHAVINGTHE 
SAMEPRESSURERATING. 
Motor 
Themotorhasamanualthermaloverloadprotector,tf 
themotoroverheatsforanyreason,theoverloadprotec- 
torwiltshutoffthemotor.Themotormustbeallowedto 
cooldownbeforerestarting.Turntheunitoff.Torestart, 
depresstheredresetbuttonlocatedontheendofthe 
motorandturntheuniton.