Originally Posted by
RussF
I decided to clean my X12 17.5 motor for the first time. According to the instructions there should be an o-ring and a shim. When I took it apart (extremely carefully) I found no o-ring on the rotor. There was a white plastic shim. What size o-ring should be there? Is it required? I bought the motor new and it should have been the first time ever opened.
Can you please measure the shim? I also don't remember a o-ring when I was working on my motors...