Toro 74991 Z Master Professional 5000 Series - Troubleshooting; The malfunction indicator light (MIL) comes on.; The starter does not crank.; The engine does not start, starts hard, or fails to keep running.

Troubleshooting
Problem
PossibleCauseCorrectiveAction
1.Theengineistoohot.
1.Turntheengineoffandletitcool.
2.Thereisoldgasinthegastank.2.Usenewgas.
3.Thefuel-shutoffvalveisnotopen
completely.
3.Openthefuel-shutoffvalve.
4.Theaircleanerisdirty.4.Makesurethattheaircleanerand
precleanerareclean.Replaceif
necessary.
5.Thebatteryisnotcharged.
5.Chargeorreplacethebattery.
6.Incorrectfuelltersarebeingusedor
thefuelltersaredirty.
6.ContactanAuthorizedServiceDealer.
7.Theconnectionstothesensors
electroniccontrolunit(ECU)andfuel
injectorsarenotsecuredproperly.
7.ContactanAuthorizedServiceDealer.
8.Thereislowvoltagefromthebattery.
8.Ensureagood12–voltbatteryisbeing
usedandisfullycharged.
Themalfunctionindicatorlight(MIL)
comeson.
9.Afuseisblown.9.Checkandreplaceanyblownfuses.
1.Theblade-controlswitch(PTO)is
engaged.
1.Movetheblade-controlswitch(PTO)
tothedisengagedposition.
2.Theparkingbrakeisnotengaged.
2.Settheparkingbrake.
3.Themotion-controlleversarenotin
theNEUTRAL-LOCKposition.
3.Ensurethatthemotion-controllevers
areintheNEUTRAL-LOCKposition.
4.Theoperatorisnotseated.
4.Sitontheseat.
5.Thebatteryisdead.
5.Chargethebattery.
6.Theelectricalconnectionsare
corrodedorloose.
6.Checktheelectricalconnectionsfor
goodcontact.
7.Thefuseisblown.7.Replacethefuse.
Thestarterdoesnotcrank.
8.Therelayorswitchiswornor
damaged.
8.ContactanAuthorizedServiceDealer.
1.Thefueltankisempty.1.Fillthefueltank.
2.Thefuel-shutoffvalveisclosed.2.Openthefuel-shutoffvalve.
3.Theoillevelinthecrankcaseislow.3.Addoiltothecrankcase.
4.Thethrottleisnotinthecorrect
position.
4.Besurethatthethrottlecontrolis
midwaybetweentheslowandfast
positions.
5.Thereisdirtinthefuellter.5.Replacethefuellter.
6.Thereisdirt,water,orstalefuelinthe
fuelsystem.
6.ContactanAuthorizedServiceDealer.
7.Theaircleanerisdirty.
7.Cleanorreplacetheair-cleaner
element.
8.Theseatswitchisnotfunctioning
properly.
8.Checktheseat-switchindicator.
Replacetheseatifnecessary.
9.Theelectricalconnectionsare
corroded,loose,ordamaged.
9.Checktheelectricalconnections
forgoodcontact.Cleanthe
connectorterminalsthoroughlywith
electrical-contactcleaner,apply
dielectricgrease,andmakethe
appropriateconnections.
10.Therelayorswitchiswornor
damaged.
10.ContactanAuthorizedServiceDealer.
11.Thesparkplugisfouledorimproperly
gapped.
11.Adjustorreplacethesparkplug.
Theenginedoesnotstart,startshard,or
failstokeeprunning.
12.Thespark-plugwireisnotconnected.
12.Checkthespark-plugwireconnection.
69