Hi i have a tecumseh engine on my gardenmaster 85 rotavator i have put new points and condener on it and new spark it will run 4 aboult 5 second then stop why

SOURCE: Backfire Tecumseh Generator

To maybe convert your Flamethrower back to a generator, Make sure the fuel line is a good quality thick rubber material (like OEM )since it passes through the engine,HEAT is a issue, if it has been modified to steel, or it's thin rubber, it will overheat the fuel on its way to the carb and cause backfires after the engine warms up , ( vaporizing gas and pressure bypassing the jets flooding the engine) I use 1/4 inch Goodyear sold at Autozone , one of very few name brand quality parts you can get there. The other possible cause is carbon deposits built up on the leading edge of the valve not allowing the valve to close all the way, just clean the valve, it is caused by too lean or rich carb setting or clogged jets, if it is a newer style carb with a pink main jet then debris in this area will always cause backfire, check and make sure the old tiny O-ring on this jet is not still in the bottom of the shaft, people forget to pull them out all the time or give up trying to pull them out, I use a paper clip and bend the end 1/8 of a inch @ 90 degrees to fish hook it out of there, CLEAN THE SHAFT with carb cleaner and a Q-tip.... A Tecumseh engine will always backfire if the carb or airflow is not perfect and sealed tight !!!!!! it looks simple to rebuild the carb but you must take your time and look close, clean it very well, make sure the jet is SEATED properly and all tiny holes are clean, use guitar string not torch head cleaners as they will enlarge the holes and make your carb run rich.

SOURCE: My tecumseh 5 hp engine will start but then after

Hello:

Operate the Engine Unitl it Quits and then Check for Fire to the Plug.
If No Fire, then the Ign Coil/Module Requires Replacing.
Hope this Helps.

Good Luck

Respectfully

John

Wade Mobley

• 513 Answers
• Posted on Jun 08, 2009

SOURCE: points replacement on a flymo rotavator with a ducati engine

you can replace the points take the points out & take them to a local small engines shop the might be able to match them up with new ones

SOURCE: I have an old pressure washer that uses Tecumseh

When you get it started, move the choke to the middle, then let it warm up. you might have to move the choke back and forth until it warms up, keep the throttle wide open.

SOURCE: not getting spark

I would check that I didn't have a key sheared off in the flywheel, that the start/stop switch isn't faulty, and that there is no missing or weak flywheel magnet. Hope this helped and best wishes.