I have a ryobi chainsaw no spark.

check switch first then coil. Use a multimeter and set the positive lead of the multimeter in position where the spark plug would usually insert
ensure it has made good contact. Place the negative lead onto the metal body of the ignition coil. A working ignition
coil will give a reading of between 2.5 - 5 k ohms. Hope this helps.

it mite be the kill swich or it might be grownding out some were

The only thing left is the magnets or the fly wheel. But you've gotta be getting close to not worth the repair cost. I go through my featherlites about 1 every 8 years.

did you check your ground wire? it runs from your coil to your on off switch. remove ground wire and try for spark again. if you get spark then you have a faulty ground wire. Also make sure you have a 10 thousand air gap between the coil leg and the flywheel magnet

Two things come to mind. The ignition coil burnt up or the condensor failed. You did not say where the smoke was comming from. If it was from the exhaust it could have a failed reed valve in the head.

my jonsered 2041 was like that and I replaced the coil with a new one worked fine after that

There are 2 stroke and 4 stroke Ryobi's. The most common non-spark problem is the coil. (at least for me) Is it getting spark???

PROBLEM Engine fails to start. CAUSE - REMEDY No fuel in tank - Fill tank. Spark plug shorted or fouled - Replace spark plug. Spark plug is broken. (cracked porcelain or electrodes broken) - Replace spark plug. Ignition lead wire shorted, broken, or disconnected from spark plug - Replace lead wire or attach to spark plug. Ignition inoperative - Contact authorized service center.

The engine case needs to be removed to expose the flywheel and ignition module. Check the module pole gap to the flywheel magnets with a thin business card for a gauge. If the gap is excessive, that can give a weak spark. If the gap appears to be correct, then it is probably time for a new ignition module. Make sure the spark plug is gapped at 0.020" before condemning the module. The spark should be blue and snappy. Check it in a dark area. Hope this helps!

If it is brand new, sounds like you should return it for the retailer to have repaired.

I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae