TM  10-3930-643-34 ENGINE,  FUEL,  EXHAUST  AND  COOLING  TROUBLESHOOTING  AND  MAINTENANCE. 4-12. Fuel Injectors. (Sheet 5 of 5) INSTALLATION 10. Using a 9/16” socket and socket wrench  handle,  install  six  retainers (4), fuel injectors (3), injector crabs (2) and bolts (1) in top, right side of engine. Tighten  six bolts (1) to 20 lb-ft. NOTE Return M10A Forklift to original equipment  condition. END OF TASK 4-87