How to disassemble and change the clutch, bell and springs on a 50 ?

- Categories : Tutorial

How to disassemble and change easily the clutch, the clutch bell, the clutch springs and the thrust spring of your MBK Booster, Nitro, Peugeot, Piaggio scooter?

Tools needed:

  • Flat spanners + ratchet with sockets

Duration of operation : 1 hour

Unscrew the clutch bell nut

Unscrew the clutch bell nut using the Easyboost 4-in-1 spanner and a ratchet with a socket.

Unscrew the clutch bell nut

Remove the clutch bell

Once the nut is released, the clutch bell can be removed to take out the torque drive/clutch assembly.

Remove the clutch bell

Removing the torque drive/clutch assembly

Remove the torque drive/clutch assembly from the primary transmission shaft, while removing the belt inside the torque drive.

Removing the torque drive/clutch assembly

Mark the position of the clutch nut

Using a marker, draw a line across the nut and torque drive so that the nut can be retightened to the original position.

Mark the position of the clutch nut

Position the Easyboost 2-in-1 tool

In order to lock the clutch, the 2 in 1 Easyboost holding tool must be positioned around the clutch, taking care to position the 3 stops between the 3 clutch facings.

Position the Easyboost 2-in-1 tool

Loosen the clutch nut

Using the Easyboost 4-in-1 spanner, loosen the clutch nut by only 1/4 turn!

Loosen the clutch nut

Fitting the Easyboost 2 in 1 spanner

Insert the Easyboost 2 in 1 spanner so that it can exert slight pressure on the clutch.

Fitting the Easyboost 2 in 1 spanner

Loosen the clutch nut

The clutch nut can now be loosened by hand.

Loosen the clutch nut

How do I remove the thrust spring?

The only thing left to do is to unscrew the nut from the axle to gradually loosen the spring.

How do I remove the thrust spring?

How to remove the clutch springs

Using the Easyboost spring puller, lever the spring out of its housing.

How to remove the clutch springs

How to fit the clutch springs?

Using the Easyboost spring puller, tension the clutch spring to place it in its housing.

How to fit the clutch springs?

How do I fit the thrust spring?

Repeat the same operations as before in order to compress the thrust spring. Align the 2 flats on the clutch with the 2 flats on the torque drive.

How do I fit the thrust spring?

Screw on the clutch nut

Once the clutch has reached its stop, screw on the clutch nut by hand.

Screw on the clutch nut

Remove the Easyboost 2 in 1 tool

Unscrew the nut so that the Easyboost 2 in 1 tool can be removed.

Remove the Easyboost 2 in 1 tool

Tighten the clutch nut

Using the Easyboost 2 in 1 tool and the Easyboost 4 in 1 tool, tighten the nut so that the 2 marks on the nut are aligned.

Tighten the clutch nut

Refit the torque drive/clutch and clutch bell assembly

Position the torque drive/clutch assembly with the belt on the primary transmission shaft, then refit the clutch bell.

Refit the torque drive/clutch and clutch bell assembly

Tighten the clutch bell nut

Using a ratchet and the Easyboost 4-in-1 spanner, tighten the clutch bell nut to complete the operation.

Tighten the clutch bell nut


For more details, we invite you to watch the YouTube video tutorial:

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