Air filter for very simple, first with the scredriver release pipe straps, then releasing the air filter on the shell of a coil spring clamp, counterclockwise to turn on the air filter cover an angle, you can remove the cover on, you think valve cover vent on the way, you can disconnect it. After removing the air filter, air filter fitted new, and then reverse back all the parts you removed. Starting street sweeper engine, listen to the air filter there are no sharp sibilant sound leakage around, if no exception is OK.
