by Alan Sanderson
You should check the fan for several common problems each time you are ready to use it. This is a brief list of items that you can easily detect before starting the engine. If you find any of these problems on the launch field, ask to borrow a fan from another pilot. Correct them, or have them corrected by a competent repair shop.
Is the guard intact? Check for broken wires, broken welds, and loose or missing fasteners.
Is the frame intact? Check for broken frame members, broken welds, and loose or missing fasteners.
Is the propeller intact? Check for chips, cracks, and loose or missing fasteners.
Is the engine tightly mounted? Check for loose mounting bolts.
Is there enough oil in the engine? Check the oil level before each use.
Is the fan properly positioned? Check for loose material that could be drawn through it, stable footing, and proper aiming. A piece of carpeting under and a few feet behind the fan will reduce the amount of debris picked up from the ground.
For a more complete review read Care and Maintenance of the Inflator Fan in the October, 1997 Repair Station column.