jt1

I an looking for a .25 1st over piston for a jt1 /jt2 Yamaha mini enduro n anyone have or know where I may find one ?? all suggestions welcome thanks !!

I have nearly completed the restoration of my childhood JT1 that has been barn stored for 35 years. I got it running this weekend but have two problems. The autolube oil pump seems to me leaking badly and after a full warm up I get a lot of smoke off the cylinder head area. I suspect it could...