Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

What is the Problem with the Master 400 Engine on the Piaggio MP3 400?

Model: Piaggio Mp3 400
Part: Engine

Video tutorial

In this video, we examine the problem with the Master 400 engine fitted to the Piaggio MP3 400, which is a common issue for many MP3 400s, namely the noise coming from the crankshaft. This noise is caused by the "play" that forms between the crankshaft bearings.

Unfortunately, this part is not available as a spare, and the entire crankshaft must be replaced at a cost of around £400.00 (having to purchase it exclusively from the official Piaggio network). Always ensure you find a competent and honest mechanic who can quickly identify the fault and does not replace the timing belt first for a similar cost.


Updated on 12 October 2026 by ScegliAuto


Related tutorials

How to Reset the Service on the Piaggio MP3 400 Scooter?
How to Reset the Service on the Piaggio MP3 400 Scooter?
Mp3 400 In this tutorial, you will learn how to reset the service on the Piaggio MP3 400 scooter, a very simple and quick operation. Before proceeding, ensur…
Replacing the Belt on the Piaggio MP3 400
Replacing the Belt on the Piaggio MP3 400
Mp3 400 In this video tutorial, you will learn how to disassemble and replace the drive belt on the Piaggio MP3 400 scooter. First, place the scooter on its …
How to Remove the Variator and Belt on the Piaggio MP3 400
How to Remove the Variator and Belt on the Piaggio MP3 400
Mp3 400 In today’s tutorial video, you will see the instructions for removing and replacing the transmission belt and variator on the Piaggio MP3 400 scooter…

How to Replace the Rear Brake Pads on a Benelli TRK 502X?

To replace the rear brake pads on a Benelli TRK 502X, loosen the screws that secure the corresponding caliper so that it can be detached from the brake disc: once the caliper is removed from its disc, you can proceed to detach it and remove the pin that secures the pads inside the caliper. At this point, you can remove the old pads from their seat to insert the new ones: these must be secured properly by positioning the caliper and checking that the brake is functioning.

Watch the video!


by ScegliAuto

More videos