HT25 - MAINTENANCE 79 om0465h.eps Check filter and suction hose every 50 hours for wear or holes. Check more often if working in dusty conditions. 1 2 To better access air filter, slide out overflow tank. Change Change air filter every 250 hours or when yellow band in air filter service indicator reaches red line. 2. Remove primary (2) and safety (1) elements. 4. Insert new primary and safety elements. 6. Reset air filter service indicator. 3. Wipe inside of housing and wash end cup. 1. Open air filter housing. 5. Close air filter case. p Air Filter Check ENGINE