Craftsman 21AB40M1099 Operator's Manual

25TROUBLESHOOTINGProblem cause remedyEngine fails to start Spark plug wire disconnected.1.Engine Throttle Control Lever incorrectly set.2.Fuel tank empty or stale fuel.3.Dirty air filter.4.Defective or incorrectly gapped spark plug.5.Misadjusted throttle control.6.Dirt or water in fuel tank.7.Reconnect wire.1.Put lever in START position.2.Fill tank with clean, fresh gasoline.3.Clean or replace filter.4.Clean, adjust gap, or replace.5.Contact your Sears Parts & Repair Center.6.Contact your Sears Parts & Repair Center.7.Engine runs erratically Defective or incorrectly gapped spark plug.1.Dirty air filter(s).2.Carburetor out of adjustment.3.Stale gasoline.4.Dirt or water in fuel tank.5.Engine cooling system clogged.6.Clean, adjust gap, or replace.1.Clean or replace.2.Contact your Sears Parts & Repair Center.3.Replace with fresh gasoline.4.Contact your Sears Parts & Repair Center.5.Clean air cooling system.6.Engine overheats Engine cooling system clogged.1.Carburetor out of adjustment.2.Oil level is low.3.Clean air cooling area.1.Contact your Sears Parts & Repair Center.2.Check oil level.3.Engine does not shut off Misadjusted throttle control or ignition switch.1. Contact your Sears Parts & Repair Center.1.Wheels/Tines will not turn Improper use of controls.1.Worn, broken, or misadjusted drive belt(s).2.Internal transmission wear or damage.3.Bolt loose in transmission pulley.4.Review Operation section.1.Replace or adjust belts.2.Contact your Sears Parts & Repair Center.3.Tighten bolt.4.Tines turn, but wheels don’t Wheel Drive Pins not in WHEEL DRIVE.1.Bolt loose in transmission pulley.2.Internal transmission wear or damage.3.Inserts Drive Pins properly.1.Tighten bolt.2.Contact your Sears Parts & Repair Center.3.Wheels turn, but tines don’t Tine holder mounting hardware missing.1.Bolt loose in transmission pulley.2.Internal transmission wear or damage.3.Replace hardware.1.Tighten bolt.2.Contact your Sears Parts & Repair Center.3.Poor tilling performance Worn tines.1.Improper Depth Regulator setting.2.Incorrect throttle setting.3.Forward Drive Belt slipping.4.Replace Tines.1.See “Tilling Tips & Techniques.”1.See Service & Maintenance Section.1.See Service & Maintenance Section.1.WarningBefore performing any type of maintenance/service, disengage all controls and stop the engine. Wait until allmoving parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to preventunintended starting. Always wear safety glasses during operation or while performing any adjustments or repairs.Find this and all your other product manuals online.Get answers from our team of home experts.Get a personalized maintenance plan for your home.Find information and tools to help with home projects.NEED MORE HELP? managemyhome.com – for free!