About Merlin Go-Kart Master Cylinders

The Merlin Go-Karts have been equipped with a few different master cylinders through the years.  The types of master cylinder are the Large Volume and the Small Volume. 

The newest Merlin Go-Karts come with the Large Volume Master Cylinder with a 22mm piston/cylinder bore diameter.  But, you may have a Small Volume Master Cylinder with a 19mm piston/cylinder bore diameter or a 22mm piston/cylinder bore diameter.

You can find the Master Cylinder and parts here:

Merlin Large Volume Master Cylinder with 22mm piston	Merlin Small Volume Master Cylinder with 19mm and 22mm piston

To know which cylinder you have, you can figure out by measuring and/or comparing the aluminum cover.  

The Large Volume Master Cylinder Aluminum cover is:

• 54mm x 37mm
• Cover screws are horizontal from one another
• More rectangle in shape

The Small Volume Master Cylinder Aluminum cover is:

• 53mm x 28mm
• Cover screws are diagonal from one another
• Shorter sides are rounded

Rebuilding your Master Cylinder should be done on a regular basis to keep it in good condition.  A few ways to know when to rebuild is:

1. You don't remember or know the last time it has been changed
2. Experiencing discolored, dirty brake fluid
3. Experiencing a soft brake pedal
4. More than average air in brake system
5. If you just like to keep your equipment in tip top shape

Master Cylinder Re-build kits are available for all cylinders mentioned above.

https://franklinkart.com/merlin-master-cylinder-rebuild-kit-22mm-large-volume/

https://franklinkart.com/merlin-master-cylinder-rebuild-kit-19mm-small-volume/

https://franklinkart.com/master-cylinder-rebuild-kit-22mm-small-volume/