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Measurements for  Models

Yamaha

A B
Model Yoke Transom
Mount
10-300 4.75" 8.25"
10-300A 4.00" 8.25"
10-300B 2.00" 7.62"
10-300C 3.88" 7.62"
10-301 3.75" 8.25"
10-302 6.00" 8.25"
10-303 SHO 5.88" 7.75"
10-303A SHO 4.73" 7.75"

Mercury

Model Yoke Transom
Mount
10-201 3.42" 7.44"
10-202 3.12" 7.44"
10-203 4.56" 7.44"
10-204 3.25" 7.44"

Evinrude or Johnson

Model Yoke Transom
Mount
10-101 4.50" 6.25"

It is necessary to confirm the spacing of the contact points on the outboard motor and the edges of the stern brackets are the same as A and B in accordance with the chart to the left.

  1. The motor yoke spacing is the Center to Center distance between the motor contact points securing the MotorMate to the motor drive shaft housing. Reference Image A
  2. The Evinrude, Johnson and Mercury transom mount spacing is measured between the inside edges of the stern brackets. Reference Image B

    The Yamaha transom mount spacing is measured across the outside edges of the stern brackets. Reference Image B

The correct MotorMate model is selected using the chart to identify the A and B dimensions for the motor contact points and the edges of the stern brackets.