Leak down test kit for the Yamaha TZ 250 1991 to 1998 V-twin models.

It comprises of:

• Two machined aluminium intake stoppers.
  One is fitted with an air pressure gauge and Schrader valve
• Two expandable exhaust bungs
• 100ml spray bottle
  

Using this kit with a low-pressure (5 PSI) pump and some atomised soapy water will quickly reveal any air leaks.