WARNING: For reasons of safety, always follow these safety precautions. SAFETY 9. Precautions when oil is at high temperature. 13. Warning to never use without coupler locked. 10. Precautions for brake oil. Order 417-93-21360 for safety labels (1 - 5) 11. Precaution s when handling battery cable. Order 417-93-21310 for safety labels (6 - 11) 12. Warning to lock attachments. (417-U77-A210) 1-40