Service Notes by Mark Kubisch
A. Pull-start cord replacement
B. Redrive overhaul and lubricant replacement – Note by Had Robinson: In order to overhaul the redrive, you must have advanced mechanical skills, a press, and the various tools needed to work on gear boxes. Mark's service notes have most of the details but he makes a serious mistake in how to remove the hub.
DO NOT USE A PULLER TO REMOVE THE HUB! YOU WILL BEND AND RUIN IT. A BENT/WARPED HUB WILL CAUSE THE PROPELLER TO VIBRATE SEVERELY.
It is not only a nuisance but the vibration will eventually destroy the inside of the hub, as well, and could be dangerous. Instead go to this page on how to remove the hub correctly.
If you need to replace the grease (older redrive models), the case must be split open and the main gear and shaft removed. It is a technical job. Thankfully, the grease does not have to be replaced often. Miniplane does not have any suggested change interval for the grease. I would suggest changing it every 200 hours of engine use or after 5 years. We can also do this job for you, if desired.