Hi all,

I was hoping someone could give me some advice!

This is my first two stoke and first time I've gone down to piston level. No idea how many miles or when it was last done, seems to run OK, no idea if the bike pulls well or lacks power as my only comparison is a 850cc.

So I've popped the old piston out to have a look:

http://i63.tinypic.com/33o5d3q.jpg

I have no idea, is this blow by normal or bad? Should I replace piston?

Thanks!

I forgot to add, the cylinder is clean and perfect, no scratches or marks.

Resoundingly NO. Looks almost new and hasn't done many miles.

Just what I wanted to hear. Thanks