Craftsman 88721 Lawn Mower User Manual


 
Enginefailstostart
Enginerunserratically
1. Bladecontroldisengaged.
2. Sparkplugbootdisconnected.
3. Fueltankemptyor stalefuel.
4. Enginenotprimed.
5. Faultysparkplug.
6. Blockedfuelline.
7. Engineflooded.
8. Burntfuse.(ElectricStartonly)
1. Sparkplugbootloose.
2. Blockedfuellineor stalefuel.
3. Ventingascapplugged.
4. Waterordirtin fuelsystem.
5. Dirtyair cleaner.
1. Engineoillevellow
2. Airflowrestricted
Engineoverheats
Enginehesitatesat highRPMs 1. Sparkpluggap settooclose
Engineidlespoorly 1. Sparkplugfouled,faulty,or gaptoowide.
2. Dirtyair cleaner
Excessivevibration 1. Cuttingbladelooseor unbalanced.
2. Bentcuttingblade.
Mowerwillnotmulchgrass 1. Wetgrass.
2. Excessivelyhighgrass.
3. Dullblade.
Unevencut 1. Wheelsnotpositionedcorrectly.
Dullblade.
Mowerwillnotselfpropel Beltnotinstalledproperly.
.
1.
2.
3.
Debriscloggingdriveoperation.
Damagedorwornbelt.
1. Engagebladecontrol.
2. Connectwiretosparkboot.
3. Filltankwithclean,freshgasoline.
4. Primeengineas instructedintheOperation
section.
5. Clean,adjustgap,or replace.
6. Cleanfuelline.
7. Waita fewminutesto restart,butdo not
prime.
8. Replacefuse(seeServiceSection).
1. Connectandtightensparkplugboot.
2. Cleanfuelline;filltankwithclean,fresh
gasoline.
3. Clearvent.
4. Drainfueltank.Refillwithfreshfuel.
5. RefertoMaintenancesectionin manual.
1. Fillenginewithproperamountand typeofoil.
2. Cleandebrisfromaroundtheengine'scoolingfins
and blowerhousing.
1. Adjustgapto.030".
1. Clean,replace,or resetgapto.030".
2. RefertoMaintenancesectionin manual.
1. Tightenbladeandadapter.Balanceblade.
2. ContactyourSearsServiceCenter.
1. Donotmowwhengrassis wet;waituntil
latertocut.
2. Mowonceata highcuttingheight,thenmowagain
at desiredheightor makea narrowercuttingpath.
3. Sharpenor replaceblade.
1. Placeall fourwheelsinsameheightposition.
2. Sharpenor replaceblade.
1. Checkbeltforproperpulleyinstallationand
movement.
2. Stopengine,disconnectsparkplugboot,
and cleanoutdebris.
3. ContactyourSearsServiceCenter.
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