50| USER MANUAL
CHECKING PROP BOLT TIGHTNESS
Over time, the bolts that hold the propeller blades to the prop hub can loosen due to
vibration. To check prop bolt tightness, twist the prop about its length. If there is free
play, the prop bolt is too loose. Use the provided 2.5mm hex driver and wrench to
tighten the bolt and nut that secure the prop blade just enough to remove the play.
CAUTION
Do not overtighten, or the prop may fail to unfold completely
during motor start up, leading to excessive vibration.
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