! Clean the groove using a cotton swab and denaturedalcohol.Slip the new tire onto the wheel. You may find ituseful to use two small flathead screwdrivers to stretchthe tire over the wheel.! If you twist the tire while stretching it over thewheel, you will need to remove and reinstall the tire.Otherwise your engine will wobble while operating.! Make sure the tire is fully seated inside the groove. Usea razor blade to trim away any excess tire that doesn'tseat itself inside the groove properly.RailKing 4-8-8-4 Big Boy Steam Engine36Remove the side rods (the rods that connecteach drive wheel to the other) from the wheelsin order to slip the new tire over the grooveddrive wheel. These bolts can be loosened witha 5mm nutdriver.Clean the groove using a cotton swab anddenatured alcohol.Make sure the old tire has been completelyremoved from the groove in the drive wheel,using a razor blade or small flathead screwdriverto pry away any remains.Traction Tire Replacement InstructionsYour locomotive is equipped with two neoprene rubber traction tires on the rearset of flanged drivers. While these tires are extremely durable, they mayoccasionally need to be replaced.ProtoSmoke™ Unit OperationThis steam locomotive contains a smoke unit that outputs smoke through thesmokestack on the boiler of the engine. The smoke unit is essentially a small heatingelement and wick that soaks up and then heats a mineral oil-based fluid that emits aharmless smoke. The smoke is then forced out of the stack by a small electric fan.With a few easy maintenance steps, you should enjoytrouble-free smoke unit operation for years.