neil king

Dan, any luck? I've worked on these carbs a little. It's the same As on the new 4t. The first thing I do to on the new ones is to install a Jitsie remote fuel screw. I had an '08 4t but did not have to pull the carb or change anything. There is very limited info out there on this carb. I found out a little about them from a 4 wheeler forum as the Yamaha Warrior used the BSR before it went fi.

The drain plug is not rocket science. I just snug it up good and not overtighten it.

I'm at about 400 ft above sea level. And I did have to lower the needle. I'm pretty sure I had to lower it by slots.

If a 2 stroke motor is run too cool for an extended period of time carbon builds up and causes piston an cylinder scoring. Also causes the rings to stick for excessive blowby.

I can't ride mine on the fast map. Almost killed myself.

Badass lookin bike! I got a 300 ordered. I'll order a 300 4t and a 250 2t also.

Is your fan thermostat bypassed?

When its hot outside the 4t fan rarely shuts off.

Some Betas suffer from a loud primary. The gears mate a little loose and create a knocking sound. This is better than too tight which causes gear whine. I don't know what gear oil you use but if you try a heavier oil and it quiets it down some than this is your noise. It doesn't hurt anything it's just annoying. The Evo's seem to be quite a bit better about this than the Rev's

What year is it?

Mobil1 0w20 will fix clutch drag and make shifting easier.

The 250 is a great bike!

I'm talking about his first post not his wishwashy 2nd post

I fully agree with every word Sting32 said! well, most of them anyway.

That site is too complicated for me to figure out.