I'm working on a re-engine Snapper model #30127BE that has a B&S 12 HP engine 3 281707-0162-01. It had been sitting out in the weather for a little over a year. When I got it fuel would just flood the carburetor and there was gas in the oil. So I rebuilt the carburetor, changed the oil and got it running. It was kind of hard starting so I decided to check and see what condition the flywheel and coil were in so I pulled the engine tin. Sure enough a lot of rust so I cleaned it all up reset the coil gap and put it all back together.
That's when the fun began. Cranked it up and after about 3-5 min's of running a high pitched screech started coming from the engine. Got it shut down and noticed the starter rope was hanging out a bit. Took the tin back off and found the spring for the pull starter was loose. So I took that all apart cleaned it and put it back together. Everything seems to be good but fire the engine up and you get that screech. Take the tin off and no Screech so it has something to do with the pull starter but I can't see anything wrong with it except for a slight kink in the spring.
I don't have very much experience with Snappers so any help would be appreciated.