Toro 121-4239, 121-4240, 121-4241, 121-4242 Installation Instructions

High-AltitudeKit

1

g020826

FormNo.3396-558RevA

InstallationInstructions

WARNING

CALIFORNIA

Proposition65Warning

Thisproductcontainsachemicalorchemicals

knowntotheStateofCaliforniatocausecancer,

birthdefects,orreproductiveharm.

Installthiskitonthecarburetoroftheenginetohelpincrease
engineperformanceanddecreaseexhaustemissionsathigh
altitudes.Installthiskitifyouexpecttheenginetorun
continuouslyabove1500m(5,000ft)inaltitude.Ifyou
operatetheengineathighaltitudewithoutthiskitinstalled,
theenginecouldexperiencepoorperformance,sparkfouling,
hardstarting,andincreasedemissions.Onceyouhave
installedthekit,attachthehigh-altitudelabelnexttotheserial
decalonthemachine.

Important:Donotoperateanenginethathasbeen
convertedforhigh-altitudeuseatloweraltitudes;
otherwise,youcouldoverheatanddamagetheengine.
Removethekitfromtheengineandrestoretheengine
toitsoriginalfactorycongurationwhenyourunitat
loweraltitudes.

InstallingtheKit

1.Removeanycoveringnecessarytoaccessthe
carburetor.

2.Removethecarburetor.

Note:Markthebowlorientationtothecarburetor
bodyandthentightentotheoriginalpoint.

3.Unscrewtheboltonthecarburetor-oatbowlfrom
thecarburetor.

4.Unscrewthestandardjetfromthecarburetor.

Note:Thejetonthecarburetorisconguredin1of2
ways;refertoFigure1andFigure2.

1.Jet

OriginalInstructions(EN)PrintedinChina

AllRightsReserved

Figure1

*3396-558*A

g021 144

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5.Installthehigh-altitudejetintothecarburetor.

Note:Donotovertightenthejet;otherwise,thejet
headwillstrip.Torquethejetto1.2to1.5N-m(10.6
to13.2in-lb).

Note:Savethestandardjetfromthecarburetorso
thatyoucaninstallitwhenyouusethemachineat
loweraltitudes.

6.ReplacetheoatchamberO-ringwiththenewone.

7.Installthecarburetor-oatbowlbyaligningthemarks
madeinstep2.

8.Installthecarburetorandothercoveringsbackonto
themachine.

Figure2

1.Jet

Note:Torquethecarburetoroatbowlboltto1.2to

1.5N-m(10.6to13.2in-lb).

9.Placethehigh-altitudelabelnexttothelabelforthe
modelandserialnumber.

10.Starttheenginetoensurethatitrunsnormally.

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