Where Does Your's Start Best ?

[MossRoad]

For those that own a gas fueled tractor, what throttle position does it seem to start best in cold weather? Low, medium throttle, high throttle or other.

You have to remember the purpose of the choke. It limits the air supply so that the engine starts on more fuel and less air in the mixture. In cold weather, the air is denser, so choking becomes even more important. I would experiment with no fuel, full choke settings. Start cranking the engine and increase the throttle slowly until it fires. After you find that spot on the throttle where it seems to fire, try using that spot or even just a tad less throttle before you start it next time. That should work. As it gets colder and colder you may need less throttle. It takes some experimentation to find each machine's sweet spots at different temps.

 

[tommaple]

As it gets colder and colder you may need less throttle.

Unless I misunderstood your post, I think you would need more throttle, not less.
As the air is colder and becomes more dense, you would need more fuel, hence more throttle.

 

[MossRoad]

Unless I misunderstood your post, I think you would need more throttle, not less.
As the air is colder and becomes more dense, you would need more fuel, hence more throttle.

As it gets colder you also get denser fuel. Better to start out with less throttle than to flood it.

 

[RalphVa]

You can tell easy enough. If it starts and dies, you don't have enough throttle. If it plain won't fire, you probably don't have enough choke. If more choke and no fire, give it more throttle.

On any 2 cycle engine, they have to be started with almost wide open throttle.

Ralph