TM 10-3930-659-20 Section IV.  REMARKS REFERENCE REMARKS CODE A Consists of cylinder head valve clearance adjustment. B Adjustment of cylinder head valves must be accomplished every 1000 hours of operation. C Includes timing the fuel injection pump using a timing pin method. D Repair is limited to welding at Direct Support Maintenance. E Repair is not authorized for ROPS frame assembly. B-21/(b-22 Blank)