Do a web search for this - I found it on ebay for $9.99 plus shipping.
NEW SUPCO HARD START CAPACITOR KIT SPP6 UP TO 10 TON AC
This is the unit Jum Seamans used and told me about. I installed it on my 16k AC unit at the end of last season but haven't tried with the portable generator yet. Jim has the same AC and says it works fine. Installation was very straight forward - the worse part is getting into the tight space to drill a whole thru the relay metal box to run the wires for this startup unit and attach the unit to the side of the metal box. The instructions with the capacitaor explains it all and when you take off the cover of the relay box you will see what they are referring to. 15 min job.
NEW SUPCO HARD START CAPACITOR KIT SPP6 UP TO 10 TON AC
This is the unit Jum Seamans used and told me about. I installed it on my 16k AC unit at the end of last season but haven't tried with the portable generator yet. Jim has the same AC and says it works fine. Installation was very straight forward - the worse part is getting into the tight space to drill a whole thru the relay metal box to run the wires for this startup unit and attach the unit to the side of the metal box. The instructions with the capacitaor explains it all and when you take off the cover of the relay box you will see what they are referring to. 15 min job.