Should I put some seafoam in it? How much? I hate chain saws. I guess I don't need them often enough to keep them cleaned out.

Too far for extension cords or I would use

maybe I'll drive my motorhome over close and use the generator.

Do you use ethanol gas in it?

I have owned several Stills, ran many more.

The only times I have had any trouble starting one were after ethanol bases gas destroyed the tank to carburetor line or if any water was in the gas. One tiny drop of water can plug the orifice in the carb.

I've seen seafoam perform small miracles with stuff like that. I'll say "yes." Empty all fuel that's currently in it, make a fresh batch of seafoam, gas and oil, and let it sit for a couple days.

The manual says you can use E10 but I use non ethanol in everything except the daily drivers. I did however leave gas in the saw over the winter. I dumped it out and mixed up fresh before I tried to start it. No start. I'll add some seafoam and see if that clears it up.

I have a Huskvarna blower that always starts right up. Maybe I should have bought one of their saws.

What model?

I have a Stihl weedeater and have never used SeaFoam in it. I am a true believer in SeaFoam but I've never had a problem with just premium and Stihl lube oil over the winter.

THE main thing I have found on unused small engines is split fuel lines or bad primer pumps, and I have rejuvenated many, as I work at the dump.

If the saw looks worth fixing, I start by making sure it is getting fuel, often times the line splits right at the nipple on the backside of the primer bulb, it won't draw any fuel so it can't pump any.

Just over winter doesn't seem long enough for non ethanol to go bad, I run Florida's finest ethanol gas and often forget to run them dry after use.

Chain saws are super simple little engines, easy to work on.

Ummm, just to be sure, the ignition is on, right? Easy to check for spark, too.

IMO at the worst at this point is a new spark plug. Does it have a "primer bulb" ? Prime it about 3 - 5 times. squeeze the throttle trigger and push the lever to the choke position hold it there and release the throttle trigger, it should stay there in the choke position. Then pull the starter cord just until you hear or feel an ignition "pop". At that point after a "pop" push the lever from the choke position to the start position and pull the starter cord and it should fire and high idle. If not then you need to either clean the spark plug or replace it. With a clean or new plug start it the way I explained.

This is a new model that does not have a primer bulb. Your instructions are exactly what the manual says. Ill pull the plug tomorrow. and try the seafoam if needed.

Thanks to everyone who has responded.

Exhaust spark arrester screen clogged?

Check for a clogged air filter. Remove the filter and see if it will start.

Thanks, I'm a "Stihl Sliver Level Certified Tech".......got the Stihl Silver certificate and was on the road to Gold Level when the pandemic hit and got in the way. Then I decided to re-retire and play with cars and motorcycles. Get the OEM NGK spark plug if it needs one. Don't let someone talk you into another brand or heat range. If you have an inductive tachometer I tell you how to set the high (H) and low (L) speed carburetor adjustments, pretty simple but best if done with a tachometer. I can do it pretty close by ear and can even by ear set the idle to 2800 rpm after the H and L setting. But that only took four and a half decades to master working with 2-stroke race bikes. If your engine is flooded or the plug is really wet grab your air gun and with the plug out blow air into the cylinder through the spark plug hole and get the engine to spin and pump out any excess fuel in the crankcase and cylinder. You'll see it come out of the muffler if it's in there. Use the Stihl Motomix at 50 to 1 it's good stuff and worth the money if only for the fact that it's a consistent factor and won't mess up your carb adjustment. I used to ballpark it with mixing ratio but carried an adjustment screw driver with me and a Stihl pocket inductive tach now I just buy a couple of cans of premixed Motomix and no tools.

MikeR

That's a good point but usually it still runs but very poorly, Stihl (pun) worth pulling it and checking. Takes a 15mm deep socket to remove it at the muffler outlet to check and worth as noted to check now and on a regular basis. You can use a propane or mapp gas torch to clean (burn) it and you can watch the sparks fly too as you're burning it clean and see how it did its job containing those sparks

My Stihls often don't start after sitting and I'm using their good fuel, saws aren't old either. I just pull the plug, blow it out, squeeze a little fuel into the cylinder and it fires right up.

I noticed if they sit the gas evaporates out of the carb and it can be hard to start. Either remove the plug or shoot the air filter with some ether.

I removed the plug and blew out the plug and chamber. Put it back together and started right up.
Thanks everyone.

Have a brand new Stihl wood boss chain saw. Less than a month old. So far have not figured out how to get it started quickly. But getting better at it. Last start took 6 strong pulls. It does not have a primer bulb - so far not impressed.

The MS251 Wood Boss?

Go to Lowe's or Home Depot and get some of their pre-mixed gasoline. It's available in 40:1 and 50:1.
The base gasoline is non-ethanol premium. The stuff stays good a long time.