Air Cleaner and Breather/Breather, Repair 12. Install filter packing in breather tube. M37001 -UN-25JAN90 05 7 M98,2005K,22 -19-11NOV85 13. Push breather tube securely onto valve cover. M37000 -UN-25JAN90 M98,2005K,23 -19-11NOV85 CTM2 (19APR90) 05-7 16, 18, 20 & 24HP Onan Engines AllTractorManuals.com 130495