Re: OMC magneto wave washers Home › Forum › Ask A Member › OMC magneto wave washers › Re: OMC magneto wave washers frankrUS Member - 1 Year (includes $3 online payment fee)Replies: 6715Topics: 51 August 11, 2018 at 12:07 pm #80950 The wave washer was used on motors that had a sliding speed control AKA the 3hp JW, etc.