4.Use a cotton swab dipped in dena- tured alcohol or tape head cleaning solution to clean the playback head, pinch roller, capstan, and tape guides.
5.When you finish cleaning, press 
and close the cassette compartment door. Then reconnect power.
Your local RadioShack store carries a full line of cassette player cleaning supplies.
RESTORING TAPE TENSION AND SOUND QUALITY
After you play a cassette several times, the tape might become tightly wound on the reels. This can cause playback sound quality to deteriorate.
