A trimmer head for use with a string trimmer includes a drive shaft includes a housing rotatable about a rotational axis. The housing includes a main body defining a cavity, and a cap removably coupled to the main body. The trimmer head includes a spool supported in the cavity and operable to support line to be dispensed, a retainer positioned between the housing and the spool, and a connection member positioned within the housing and configured to drivingly couple to the drive shaft.