Motorcycle Repair: engines, leak down test, cylinder compression

Question
when should i replace the rings in my 2 stroke yamaha motorbike?
And when should i clean my air filter? its due for one now..

Answer
Hi Adam,

Q:  when should i replace the rings in my 2 stroke yamaha motorbike?

A:  When a cylinder compression test or a leak-down test indicates a worn cylinder.


Q:  And when should i clean my air filter? its due for one now..

A:  Follow the periodic maintenance schedule in the Owner's Manual or Service Manual, or whenever the air filter becomes obsrturcted or dirty.

Respectfully,
Mark Shively