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Thanks for the detailed writeup! I found a part online (see attached photo) — it looks like it includes a full carburetor assembly along with gaskets, mounting bolts, and an intake gasket/collar, rather than just a needle-and-seat kit. Would this be a suitable substitute for the needle-and-seat...

Hi all, hoping someone can help diagnose this. Engine: Tecumseh TVS90, model 43732R Symptoms: Engine won't start When pulling the starter rope, raw gasoline sprays out of the exhaust Spark plug comes out wet with fuel What I've already tried: Cleaned the carburetor Cleaned the float needle valve...

Thanks for narrowing this down! If it does turn out to be the cam lobes shifted on the shaft, what would be involved in confirming and fixing that? What tools would I need to split the crankcase and inspect/replace the cam, and are there any good videos you'd recommend for this specific repair...

https://drive.google.com/file/d/1YkGwyPmCDwtAhcpBUT1Zn0mQINOLTsjZ/view?usp=sharing

engine is a Briggs & Stratton model 104M0200. After clearing the hydro-lock, I tried again with just a small amount of gasoline in the spark plug hole. The engine still won't start, even though the spark plug is sparking fine. What should I check or try next?

Thank you all for your help! I adjusted the valve lash but the engine still wouldn't start. Based on a video I saw online, I put about 5ml of gasoline into the spark plug hole and tried to start it. After a few pulls of the starter cord, it became stuck and I couldn't pull it anymore. I removed...

Thanks, that's really helpful! For context, I already had the valve cover off and noticed both rocker arms have some play, with the top one noticeably looser than the bottom one - not sure if that points to one of these three causes. Here's a video of me pulling the starter cord with the cover...

I have a Toro 21472 that won't start. I tested it by spraying starting fluid into the air filter. When I pull the starter cord, the starting fluid sprays back out of the air filter instead of being drawn in. What could be causing this, and how would I go about fixing it? Additional info...