Lubricating the toilet
Last thing before you put the top back on the pump, put a HEALTHY squirt of SuperLube in it...pump a couple of times to spread it all over the inside of the pump cylinder...put the top on. You're good to go for another year. If you do this once a year, whether you rebuild or not, the toilet will need no further lubrication...plus the seals and o-rings will last a LOT longer, greatly increasing the time between rebuilds. In the fall, as part of winterizing, is the best time to it because the grease protects the rubber parts in the toilet from drying out over the winter. I've never recommended spending the money to rebuild a manual Jabsco toilet--not when a rebuild kit is about $50 and the whole toilet is usually on sale somewhere for $99. Just keep it lubricated and you should get about 5 years out of it before something in it breaks. When that happens, replace it.