REV Robotics MINI BOT Assembly Manual page 18

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Slide a Shaft Collar onto the end of the Shaft,
then proceed to push the Shaft into the Motor
Turn the wheel a couple of times to make sure that the Shaft is fully inserted into the Motor.
You should feel some tension.
1) Slide the Shaft Collar until it is flush
with the Motion Bracket on the Wheel side.
2) Once posisitoned, tighten the Shaft Collar
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