Okay. Cleaning up a Singer 15-91 and the motor grease tubes are totally disgusting. Am in the process of cleaning them out and will use vaseline, aka petroleum jelly, as the replacement grease. Just how do I get the jelly into the grease tubes? Do not care about mess but this will be a gift for a beginner sewist so would like to do this for her as well as gifting her with a screwdriver that will work on most of the screws. So please offer some real life advice and not the TFSR manual which I have studied but found to be actual very little help with this regard. Thanks in advance.
Chris