I found the part which rust has generated on the side of the drive shaft.




So the place which has rusted was restored so that it might not go on any more.

I used the following wire brush to remove the rust.




Mmm..... The large part has rusted!!







After that, I used the "Sabi Changer". "Sabi" is Japanese word. It means "Rust". It is useful item because if you use "Sabi Changer" on the rust point. That point will not rust by chemical reaction.




I must wait about 8 hours after I applied "Sabi Changer" on the rust point. It changes from milk-white into the black.




And repainted that part black color!