Toro snowthrower model # HSK 635 won't restart, stated first time, ran about ten minutes, then died, put brand new spark plug in, getting good spark, just won't fire up, even when I tried a li

that video sounded like a very low battery, and, if you know your not getting spark, check the plug wires for continuity, and that there are good connection to spark plugs, once you get spark, then make sure you are getting fuel

yes the coil

heat the spark plug for a few minutes then put back in the engine. sometimes works when you not used engine in a long time. it will take a good few goes to get the old fuel out of the carb, the heat helps burn old fuel.

Check if there is spark. Take out the spark plug again and hold against cylinder head with screwdriver. Start motor as usual, see if there is spark on plug when starting. if there is no spark replace ignition module .The next thing is there fuel getting to engine. My guess is that you have a plugged carb. jet. Clean out and reassemble. Be careful not to lose the small parts. Good luck

Mine does same. Wait a half hour, restart, runs good for 20 minutes and slows again. Just had it in for a tune up. Machine is only three years old.

I had a similar problem. I'll bet I took off the carb. 5 - 6 times and cleaned it with no success. Very fustrating! One time while checking the fuel level I accidently left off the gas cap, I started it and while running I put the gas cap back on and started to mow and about 10 seconds it died. I thought could'nt be! So I loosened the cap, restarted and it kept running. Any way the small vent hole was plugged. Thats my story!. Good luck.

It sounds like it is time to replace the ignition module from what you are saying. The motor heats up and the electrical in the module open up.
I would check the spark plug as well and stay away from resistor type plugs.
HTH
Good Day.

Check the gas and gas tank, you might have water in the gas.

I would change the spark plug and be sure to gap it as per your owner's manual. I would also clean or change the air filter. I would also use only high test gas and the oil recommended by the manufacturer. good luck.

Hi

When the engine stops check the spark at the spark plug.Check compression(remove the spark plug and ground the plug wire on the engine,seal the plug hole with your thumb.Operate the starter.If the compression preasure blows your thumb off the hole,the compression is adequate for the engine to run.Now priming the engine(put some gas into the spark plug hole,back the spark plug and try to start the engine.Let me know. savumihai71 regards