Orient the vertical thruster motor adapter at the shaft end of the vertical motor assembly with the adapter shoulder away from the vertical motor.
Slide the vertical thruster motor adapter over the vertical thruster motor shaft and onto the vertical thruster motor assembly.
Align the screw holes of the vertical motor adapter and vertical motor assembly.
Apply blue Loctite to the 4-40 X 5/8 inch Phillips head screw threads.
Replace the four 4-40 X 5/8 inch Phillips head screws through the vertical thruster motor adapter and into the vertical thruster motor assembly and tighten the screws.
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