Champion Blower Fan Blade Removal in Bellows, Blowers Posted May 26, 2018 Ok I have not tried the heat. Saw that on youtube. Looks like the round bit with the two flats on it is shown upper left. part of the bearing assembly. And looks like either/all stuff comes loose just need to be able to hold it tight without breaking stuff. Yeah, I was thinking the same in regard to right handed threads. NO point since it works either way. I find I use mine with an overhand push but some might like to pull it over the top I guess... The pic helps. Thanks Frozen! As for the model is does not say 400 on it. The SN is #6662. BUt it's still pretty dirty and maybe it will reveal itself once I progress a bit further. OTherwise is looks quite similar to my other Champ 400. And so far this shaft pic matches everything I have been able to get to so far.