Decal says: INSPECT DAILY- CLEAN CUP WHEN DIRT DEPTH REACHES 3/8" SERVICE ACCORDING TO OPERATOR'S MANUAL. USE SAME CRANK GRADE OIL AS USED IN ENGINE CRANKCASE FOR PREVAILING TEMPERATURES. BE SURE OIL CUP IS SECURELY LOCKED IN PLACE WITH OIL CUP BEAD CONTACTING BODY BEAD ALL THE WAY AROUND. FAILURE TO DO THIS AND LOSS OF A CUP MAY RUIN AN ENGINE. DONALDSON COMPANY INC MINNEAPOLIS 31, MINN MADE IN U.S.A.
