Stuck 1974 KH 400 3 cylinder 2 stroke motor

If it were mine, I would just pour it down the plug holes for now. After a few days try rocking the bike back and fourth in gear. After it frees up you'll want to remove the head and have a peek at the cylinder walls for sure.

Try fogging with WD too. Dont forget the cylinder is ported so whatever you pour down the cylinder might go to the crankcase.

Soak the carbs in Pine Sol. There's a thread with pics on ADV Rider.

I got the carbs off soaking in pinesol now, wow were they bad. Here is a pic of the beast

DAM those bars are fugly!

The paint is cool though, you gonna repaint it or what?

Yeah the bars have been replace with super bike bars, just waiting on new cables . No, i love the paint, in gonna clean up the rusty and bubbly areas and touch it up and clear coat. The paint is to cool to sand off

Just got off the phone with him, turns out his wife went crazy when she found out he bought a bike, he bought it for 250 bucks, i gave him 300 and we called it a day God i hope the motor isn't to messed up....lol

Sounds like he needs a new wife.

Haha, tell me about it.

If those stock chrome pipes are in good shape, they would be worth quite a bit to the right guy restoring one. I had a set of Bassani chambers on the 76 500 I has some years ago. What a Snarl!