Before cleaning, we have to disassemble the watch (Teach Later).
If you have an ultrasonic cleaner, you can put all parts, except
the main spring, into the ultrasonic cleaner. For safety and the
sake of the parts, only use filtered water with the ultrasonic cleaner.
More information -- > How
to use Ultra Sonic Cleaner
We do not want to pull out the main spring from the main wheel;
therefore, we do not clean it with water.
No matter you have the ultrasonic cleaner or not, we have to clean
all parts with the Cleaning Naphtha.
Immerse all parts, except the main spring and the screws -- more
greasy dirt, in the Cleaning Naphtha for 1 minute and use a soft
brush to clean the parts if needed. After cleaning, put all parts
on a white paper to let it dry.
Then, we can immerse the main spring and the screws in the same
Cleaning Naphtha and clean it.