Hubsan H507A X4 STAR PRO User Manual page 7

Note: Mind the differing colors of the A and B propeller screws!
Propeller B Propeller A
1) Installation: Before installing propellers for the first time, please check that each Propeller A is
matched with motor A and each Propeller B is matched with motor B. Align the "I" with the flat side of
the "D" shaped motor shaft (Figure 1). Then use the provided screws and screwdriver to secure each
Propeller A's are paired with black screws and tightened counterclockwise. Propeller B's are paired with
silver screws and tightened clockwise.
"I"symbol
Counterclockwise
"D"shaft
Clockwise
< 图 1>
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