Mike
I have done the relube job on my hacker c50 now about 10 times it is real easy just follow the instructions that comes with the grease from hacker I use a tissue and toothbrush to clean old grease out make sure you don''t loose the shim washers from under the three gears those gears go back on with the writing on the bearings facing up just put a small amount of grease where they tell you to do and don''t use too much grease as it will just throw out any excess around the fan
John