How to disassamble a fixed-pitch propeller from my hydrogenerator ?

For hydrogenerators models : Cruising 300W, Cruising 500W, Cruising 600W, Racing Class 40, Racing Nano

Material needed : 

- a M5 headless screw , length 10 - 20mm ( for example )

- a M6 screw length 30 - 40 mm

STEP 1

remove the M5 screw from the propeller

STEP 2

replace it by headless M5 screw

STEP 3

screw the M6 to extract the propeller

STEP 4

the propeller will come easily because the M6 screw pushes not on the shaft ( which can be damaged at the contact point ) but on the M5 screw