Maintenance Tips Continued
                   Attention:                                                               
                                                                                   
As
part of your routine maintenance if you notice a build-up of diesel exhaust or fire
residue or any other foreign materials on your Humat valve, please clean valve
using a natural bio-cleaner.                                                                                     
                           

Warning!!!! Do not use petroleum based products..... As they will break
down the seals and silicone.