Re: Synchronizing a 1952 Johnson QD 13 Home › Forum › Ask A Member › Synchronizing a 1952 Johnson QD 13 › Re: Synchronizing a 1952 Johnson QD 13 johnnyUS Member - 1 Year (includes $3 online payment fee)Replies: 83Topics: 18 September 21, 2018 at 4:04 pm #83320 There are no scribed lines on the cam plate or on the motor cover indicating where the cam plate should be located when the throttle roller just starts to open the throttle shaft.