Won't shut off

[tinkerer46]

Recently bought brand new Husqvarna TS 142K with a Series 7000 Twin 725cc Kohler, it only has 8 hours on it. The book says to shut it off bring the throttle to half way, let it idle down before shutting it off, which I have . I t will continue to run for at least 30 seconds (pre ignition). It will also do the same thing if I bring the throttle all the way to slow position. I'm pretty sure at some point it will damage the engine, so any help would be greatly appreciated.

 

[bertsmobile1]

Sounds like it is over heating
Pull the spark plugs out take photo & post it
Chances are they will be white
I have had the same problem with a Toro Titan
Ended up drilling out the jets ( very Naughty of me )

 

[Bertrrr]

Look at the key switch , it should ground ignition in the Off Position , it should also drop power from the little Kill Solenoid under the carb.

 

[tinkerer46]

Thanks very much for the quick response. I will try and let you know.