You probably don't have to remove the prop. Most feathering props have grease fittings that are plugged with a cap screw. Remove the screw and replace with a Zerk fitting that can be purchased at any auto parts
store. Pump in grease until it starts to exude from the joints.
I have used a waterproof grease sold by Defender.
Also replace the zinc on the end of the prop. Boatzinc sells them for MaxProp. Island Packet
sells them for Prowell and others cheaper than the manufacturer. For best life put a little nail polish on the zinc around the attachment screws. These zincs need to be replaced yearly at a minimum in most cases.