Troubleshooting - Craftsman 247.770131 Operator's Manual

Enginefails to start
Enginerunserratically
1. Throttlelevernot in correctstartingposition
2. Chokecontrolnot in CHOKEposition
3. Sparkplugwire disconnected
4. Faultysparkplug
5. Fueltank emptyor stale fuel
6. Cannotpull recoilcord
7. Safetyswitchnotdepressed
Engineoverheats
Enginehesitatesat high RPMs 1. Sparkpluggap settoo close
Engineidlespoorly 1. Fouledspark plug
2. Dirtyair cleaner
Excessivevibration 1. Loosepartsor damagedimpeller
Unit doesnot discharge 1. Dischargearea clogged
Rate d dischargeslows
considerablyor composition of
dischargedmaterialchanges
Unit fails to propelitself or slips
whendrivecontrol isengaged
8. Safetyswitchwire is not connectedto
engineor notproperlygrounded
1. Unit runningon CHOKE
2. Sparkplugwire loose
3. Stalefuel
4. Wateror dirt in fuel system
5. Dirtyair cleaner
6. Lowengine RPM
7. Carburetor out of adjustment
1. Engineoil levellow
2. Air flow restricted
2. Foreignobject lodgedin impeller
3. Lowengine RPM
4. Vacuumbag is full
1. Lowengine RPM
2. Chipperbladedull
1. Drivecontrolcableout of adjustment
2. Drivebeltworn or damaged
1. Movethrottleleverto FASTposition.
2. Movechokecontrolto CHOKEposition.
3. Connectwire to spark plug.
4. Clean,adjustgap,or replace.
5. Filltank with clean,fresh gasoline.
6. Obstructionlodgedin impeller.Disconnectspark
plugwire and removelodgedobject.
7. Safetyswitch mustbe depressedby thefront tab on
the bag handlewhen securingthe bag.
8. Connectsafetyswitchwireto engineconnectorand
groundto mountingbracket.
1. Movechokecontrolto RUNposition.
2. Connectand tightenspark plugwire.
3. Filltank with fresh gasoline.
4. Drainfuel. Refillwith freshfuel.
5. Cleanor replaceair cleanerfilter.
6. Alwaysrun engineat full throttle.
7. ContactyourSearsParts& RepairCenter.
1. Fillenginewith properamountand type of oil.
2. Cleangrass clippingsand debrisfrom aroundthe
engine'scoolingfins and blowerhousing.
1. Removespark plug and adjustgap.
1. Replacespark plug and adjustgap.
2. Replaceair cleanercartridge.
1. Stopengineimmediately and disconnectsparkplug
wire. ContactyourSearsParts & RepairCenter.
1. Stopengineimmediately and disconnectsparkplug
wire. Cleanflail screenand insideof dischargeopen-
ing.
2. Stopengineand disconnectspark plugwire. Remove
lodgedobject.
3. Alwaysrun engineat full throttle.
4. Emptybag.
1. Alwaysrun engineat full throttle.
2. Replacechipperbladeor contactyourSearsParts &
RepairCenter.
1. Followadjustmentprocedurein Service& Mainte-
nancesection.
2. ContactyourSearsParts& RepairCenter.
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