MNGB 0 #1 Posted September 1, 2010 Hi all, I have a Tecumseh H70, I have been thur the carb the engine starts and runs good but it will not ile for any length of time. It has good power but as it idles it slows down to the point it stops it'll start right up and does the same, I've tried adjusting the idle jet if I lean it it stops sooner if it is enriched the engine runs ruff, adjusting the idle set screw gets it to were it runs too fast, there is a new air filter installed. Any ideas? GB in MN Share this post Link to post Share on other sites
Kelly 1,031 #2 Posted September 2, 2010 Make sure both base gaskets are new, the one behind the carb, and the spacer, I just had the same problem. Share this post Link to post Share on other sites
MNGB 0 #3 Posted September 2, 2010 Hi Kelly thanks for the reply, you are close but its not the gaskets but the carb throttle shaft leaking, I checked this AM with the engine running using carb cleaner nothing when I sprayed the gaskets but when I sprayed the thrott;e shaft area the engine bogged down and then took off. So now its to try for some kind of seal or find a reasonably priced used carb for a 7 hp Tecumseh. GB in MN Share this post Link to post Share on other sites
Coadster32 793 #4 Posted September 2, 2010 Nice find! :) Share this post Link to post Share on other sites
buckeye 5 #5 Posted September 2, 2010 I had the same problem with mine. I found a thin washer, drilled it to the same size as the throttle shaft and JB welded it to the top of the carb. then i used a felt washer. Share this post Link to post Share on other sites
