Musso Stella 5030 Gear and Shaft Replacement (DIY Guide 2025)

How to Replace the Gear and Shaft in a Lello / Musso Stella 5030 Ice Cream Machine (Step-by-Step Guide)

If your Musso / Lello Musso Pola Stella 5030 ice cream machine has stopped churning properly or you hear strange grinding sounds, it’s likely that the gear or shaft needs replacing. The good news? You don’t need to be a technician to fix it. With this simple do-it-yourself guide from MiniPCaffe.com, you can replace both parts at home in just 10–15 minutes. Let’s go through the steps so you can bring your machine back to life.

Compatible Models

This guide works for the Lello/Musso Pola Stella 5030 L2 model. Always make sure you have the correct replacement parts before you begin.

What You’ll Need

Replacement Parts:

• Gear and Shaft for Musso Stella (available at MiniPCaffe.com)

Tools:

• Phillips screwdriver or drill
• Hex T-key (easier than a standard hex key)
• Food-grade grease

Before you start, double-check that you have the correct gear and shaft. If not, you can find all original Musso replacement parts on MiniPCaffe.com, including those for the Stella and Mini models.

Detailed YouTube Video Guide

For a clearer view of the process, we created a full video tutorial showing every step in detail. Watch our YouTube guide on how to replace the gear and shaft in the Musso Stella 5030 directly below.

The video includes:

• Step-by-step visual instructions
• Close-up shots of each component
• Helpful tips for aligning and greasing the parts correctly

You can find the full video on the official MiniPCaffe YouTube channel below

Step 1: Remove the Blade

Remove the blade screw nut and then the blade. Place them aside safely. Use your screwdriver or drill to remove all screws from the machine’s outer body. Keep all screws in a small container so none go missing.

Step 2: Detach the Container

Using the T hex key, unscrew the two bolts holding the main container to the shaft. Lift the container gently to expose the gear housing beneath it. You can use a clean stick or bar to hold the container in place while you work.

Step 3: Remove the Gear Cover

With your screwdriver, unscrew the six screws holding the gear shield cover in place. This cover connects the gear to the motor and keeps it protected. Once removed, you’ll see the old gear and shaft. It’s best to replace both at the same time for better performance, but if only one part is worn out, you can change just that piece.

Step 4: Secure the Container

When the container is lifted, it’s best to keep it steady while working. You can use a clean stick, small bar, or any non-metal object to hold the container securely in place. This prevents it from slipping and gives you better access to the gear and shaft area while keeping both hands free for the repair.

Step 3: Open the Gearbox

Next, use your screwdriver to remove the six screws holding the gearbox cover plate (also called the gear shield). This metal plate protects the internal gears and connects the gear to the motor. Once the screws are removed, gently lift the cover to reveal the inner mechanism. Be careful not to lose any washers or small pieces that may be attached to the cover.

Step 4: Remove the Old Gear and Shaft

After opening the gearbox, you’ll see the internal gear and shaft assembly. Inspect them closely for damage. If you see worn or broken teeth on the gear, or if the shaft doesn’t rotate smoothly, both parts should be replaced.
Gently pull the old gear and shaft out of the gearbox. If they are tight, twist slightly while lifting. Clean away any old grease, dust, or metal residue before installing the new parts. Replacing both the gear and shaft together is strongly recommended to maintain perfect alignment and prevent uneven wear.

Step 5: Prepare and Install the New Parts

Apply a thin layer of food-grade grease to the new gear teeth and on the connecting points between the gear and shaft. This will ensure smoother operation and reduce friction. Place the new gear and shaft into position, aligning them correctly with the motor gear. Once set, reattach the gearbox cover and tighten all six screws firmly.

Step 6: Reassemble the Machine

Lower the main container back into place and tighten the two bolts using your hex key. Reinstall the blade and blade screw nut. Double-check that all screws and bolts are properly secured.

Step 7: Test the Machine

Plug in your Musso Stella 5030 and run a short test cycle. The motor should run quietly and smoothly without any grinding sounds. If it does, your repair is complete and successful.

Helpful Tips

Always unplug your ice cream machine before starting any repair. Keep all small screws and pieces in a box to avoid losing them. Use only food-grade grease to ensure safety and smooth performance.

Where to Get Original Parts

You can order all original Musso replacement parts, including the gear and shaft for the Musso Stella and Musso Mini, directly from MiniPCaffe.com. We offer genuine Italian-made replacement parts for all of the Musso ice cream makers.

Need More Help?

If you have questions or need assistance, reach out to the MiniPCaffe.com support team. You can contact us at info@minipcaffe.com or through Facebook Messenger chat on the bottom right corner of our website. We’re always happy to help you keep your machines working perfectly.

Conclusion

Replacing the gear and shaft in your Musso Stella 5030 is a simple and satisfying DIY project. With a few tools, some patience, and this easy guide from MiniPCaffe.com, you’ll have your ice cream machine back to perfect working condition in no time. Enjoy making fresh, creamy ice cream again with confidence.