Hubsan H123D X4 JET User Manual page 8

● Make sure the battery is fully charged before each flight.
● Please do not leave unattended while charging.
● When charging is complete, disconnect the charger and battery from power
immediately.
1.3 Installing And Removing Propellers
The aircraft propellers are triple bladed; each is marked with either an A or a B. Please
replace damaged propellers with genuine Hubsan stock.
Before installing the propellers for the first time, please check whether the propeller
and motor arm read "A" or "B". The two letters should match. Only then use two
screws per propeller to tighten and secure each to its respective motor shaft.
Propeller B
Propeller A
If propellers need to be changed out, please remove the propeller screws first before
taking the existing propeller off.
Propeller A
Propeller B
07
A=A
B=B