I have recently received a telephone call from a former student who has purchased a paramotor from me year ago. He said that he was noticing some clear oil on the re-drive. I told him to check everything, tighten up all the bolts, test the propeller for any kind of a play etc. He called next day to tell me that his redrive is totalled. As it turns out he checked everything except the bolts that hold re-drive together they’re kind of hidden behind the propeller and he did not tighten those.
The red rive came apart partially in-flight and all gears inside got wrecked.
Please do real preflight check on your units – make sure that all the bolts are tight! Check before and after each flight.