DeWalt DCST960 - Troubleshooting

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Unit will not start.  • Checkbatteryinstallation.
 • Checkbatterychargingrequirements.
 • Checkthatlockoffisfullypulledbackpriortomovingmaintrigger.
 • ForDCST960only,brushesmayneedtobereplaced.RefertoReplacing Brushes in Motor.
Unit shuts down in use.  • Chargebattery.
 • Cleardebrisaroundspool.
 • Reduce/limitswathto15inches(381mm)MAX.
 • Reinstallguardifithasbeenremoved.
Batterywon’tcharge.  • Insertbatteryintochargeruntilredcharginglightilluminates.Chargeupto8hoursifbatteryis
totally drained.
 •
Plug charger into a working outlet. Refer to Important Charging Notes for more details.
• Checkcurrentatreceptaclebyplugginganappliance.
 • Checktoseeifreceptacleisconnectedtoalightswitchwhichturnspoweroffwhenyouturn
out the lights.
 • Movechargerandappliancetoasurroundingairtemperatureofabove40°F(4.5°C)orbelow
105°F(40.5°C).
Appliance runs slowly.  • Remove battery from appliance.
 • Checkthatthespoolhousingcanrotatefreely.Carefullycleanitifnecessary.
 • Checkthatthecuttinglinedoesnotprotrudemorethanapproximately4-13/16"(122MM) from
the spool. If it does, cut it off so that it just reaches the line trimming blade.
 • ForDCST960only,brushesmayneedtobereplaced.RefertoReplacing Brushes in Motor.
Trimmer is vibrating. • Makesurebothcuttinglinesarethesamelength.
 • Checktoseeifthespoolisproperlywound.Ifspoolisbrokenthenreplacespool.