Toro Power Clear 621 ZR - Changing the Engine Oil; Inspecting the Rotor Blades

1/8-inch(2mmto3mm)gapbetweenthecontrol
barandthehandle(Figure24).
Note:MovingtheZ-ttinghigherdecreasesthe
gapbetweenthecontrolbarandthehandle;moving
itlowerincreasesthegap.
3.Hookthespringtotheadjusterlinkandslidethe
springcoverovertheadjusterlink.
4.Checktheadjustment;refertoCheckingtheControl
Cable.
Note:Afterextendeduse,thedrivebeltmaywear
andloseitsproperbelttension.Ifthedrivebelt
slips(continuouslysqueals)underaheavyload,
disconnectthespringfromtheadjustorlinkand
movetheupperendofthespringtotheholethat
isfurtherfromthepivotpointinthecontrolbar
(
Figure26).Thenconnectthespringtotheadjustor
linkandadjustthecontrolcable.
Figure26
1.Removetheupperendof
springfromthishole
3.Pivotpoint
2.Inserttheupperendof
springintothishole
4.Upperendofspring
Note:Thebeltmayslip(squeal)inwetconditions;
todryoutthedrivesystem,starttherotorandrun
itwithoutaloadfor30seconds.
InspectingtheRotorBlades
ServiceInterval:Yearly—Inspecttherotorbladesand
haveanAuthorizedServiceDealer
replacetherotorbladesandscraperif
necessary.
Beforeeachsession,inspecttherotorbladesforwear.
Whenarotorbladeedgehasworndowntothewear
indicatorhole,haveanAuthorizedServiceDealer
replacetherotorbladesandthescraper(Figure27).
Figure27
1.Thewearindicatorholeis
intact;youdonotneedto
replacetherotorblades.
2.Thewearindicatorholeis
exposed;replacetherotor
blades.
ChangingtheEngineOil
ServiceInterval:Aftertherst2hours
Yearly
Runtheengineafewminutesbeforechangingtheoil
towarmit.Warmoilowsbetterandcarriesmore
contaminants.
1.Siphonthefuelfromthefueltankintoanapproved
fuelcontainer,orruntheengineuntilitstops.
2.Movethemachinetoalevelsurface.
3.Placeanoildrainpanundertheoildrainplug,
removetheoildrainplug,andtipthemachine
backwardanddraintheusedoilintheoildrainpan
Figure28).
Figure28
4.Afterdrainingtheusedoil,returnthemachinetothe
operatingposition.
5.Installtheoildrainplugandtightenitsecurely.
6.Cleanaroundtheoilllcap(
Figure29).
13