Quick view Add to Cart Overhaul Instructions with Parts Breakdown for Solenoid Operated Spark Control Valve - Parts 23951, 27951, 23951-2, and 27951-2, Adel Document Part Number: T.O. No. 7R8-3-16-13, Formerly 9H8-14-89-13 Number of pages: 6Part Number: T.O. No. 7R8-3-16-13, Formerly 9H8-14-89-13Revision Date: 15-Jan-1959Description: Mfg By: Adel MSRP: Was: Now: $15.00