So, you're tackling a Zacconi Riviera piston install? Awesome! This iconic lever machine rewards patience and precision. Getting that piston back into the group head can be tricky, but fear not, we've got you covered.
**The Key is Lube (Food-Safe, Of Course!):** Generously apply food-safe lubricant (like Molykote 111) to the piston seals and the inner walls of the group head. This is *crucial* for a smooth entry and proper seal.
**The Gentle Touch:** Align the piston carefully with the group head opening. Apply even pressure, gently rotating the piston as you push. Avoid forcing it! If it's meeting resistance, double-check the alignment and add more lube. Persistent resistance could indicate damaged seals.
**Leverage (Smartly):** Using the lever arm can give you extra leverage, but be cautious! Too much force can damage the machine. Gradual pressure is your friend.
**Still Stuck?** Check online forums for Zacconi Riviera enthusiasts. Often, they've encountered the same issue and offer invaluable tips and tricks specific to your machine. Good luck, and enjoy that delicious lever-pulled espresso!
