Stihl 360 Pro Won't Start

[stderr]

What I discovered was the tank vent was bad and allowing pressure to build in the tank as the saw sat...This goes against everything I thought also...I would have thought the if the metering height was set properly it would have held the fuel back, but obviously not...

Tank vent will not cause one to flood unless the needle will not hold
the pressurized fuel back. Needle should hold all the pressure that can build
up in tank. The vent is made to let air in tank not out as it's a one way valve.
Stihl has changed tank vent many, many times over the years.

With a good tank vent you should be able to shake the saw to build pressure
in gas tank. Then when you remove gas cap it should hiss letting the
pressure out. This also help push fuel to carb for easier cold starts.

Ah hah! Thanks for that. Day's off to a good start, learned something new.

 

[flatnesr]

Success

Success! I did a complete rebuild on the carb including the welch plug. It took some tweeking on the needle lever, but she fires up now. It still needs some adjusting. She wants to die if your not in the throttle.

My new question is: Before I rebuilt the carb for the second time it would pop and release the decomp valve, but only when the muffle was off. Muffler was totally clean. No out of the ordinary blockage. As soon as I put the muffler on it gave me nothing. Why?

The gentleman that sold me the kit also said that they have been getting some bad kits lately.

Thanks for the advice. Every day is a learning experience. Today I learned not to let the students take on such a big project! School has been out for a week. Guess who's been working on the saw. Now I can go back to my junk, I mean treasures. I just got a new bar and chain for my 038.