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Here's a brief overview of the pre-flight of the main spring gear of the Zenith STOL CH 701 - to make sure that the aluminum spring gear is properly tightened between the two polyurethane spacers (on both sides). This is a quick and easy item to check for regularly (and especially after a rough landing):
Older STOL CH701's used pieces of radiator hose as spacers. I recommend changing them to the new polyurethane spacers with are softer and which will stay in place better.
Contact Zenith Aircraft Company for more info or to order replacement polyurethane spacers:
Contact me with your building and flying questions. Enjoy building and flying your STOL CH 701!
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