Correct me if I'm missing something but if the saw burped on choke with gas in the carb, how is that an ignition coil issue? I just fixed my 029 yesterday. There was a crack in the fuel line and it was basically doing exactly what your saw was doing - started, ran fine it seemed, and then all of a sudden just would not start. Sprayed some starting fluid. Started. I ended up getting a carb kit for it because when I took it apart the diaphragm was a bit feckered in my opinion....and it still wouldn't start. Drained the tank, looked at the line and sure enough, a weird crack which did not leak if I just plugged up the one end of the line and blew into the other. But if I *bent* the line, it would leak. So that may be the issue in your case.... I happened to see a video of a guy who had all sorts of problems with his 029.....and I've watched a video of his before on tearing down a BR600 backpack blower.....and he had the same exact issue with the weird tear....but it was in his impulse line. Link with a timestamp. I replaced the fuel line and the saw started right up. On a side note I feel like the design of the 029 is pretty obnoxious. You have to take the handle bar off to take the cover off....which is all one piece.....and connected to the carb area....so if you need to work on the carb you need to take everything off. And of course, I had to do it twice because the oiler was not working properly. And when I took out the worm gear I saw a tiny bit of burntness on it...so I swapped it out with a spare worm gear I happen to have. That seemed to have did the trick as it is oiling properly now. I also cleaned up the saw with the parts washer. That video series (15 parts!) has a nice detailed section on the oiling system of the 029. I took mine apart and cleaned it thoroughly.
Totally possible...my 290 would run, until it wouldn't, bad coil. How the choke is set, etc, can be just "noise" that adds to the confusion of getting a good diagnosis if the real problem is an intermittent electrical issue.
Picked up the saw Friday, cranks good. Put it in the case and inside my truck. Took it out this morning, gassed and oiled it up... Looks great, doesn't it... Didn't know I needed to check it that close Now, we have to drive 30 miles 1 way to get it right... Shade tree at it's best...
If its just about 2 missing bolts, I'd not drive 60 miles just for that (esp. with gas at $4.50/gall!) I'm sure they are available at a hardware a lil closer...or mail order. Now if there's other issues too...the road trip is on!
I heard Husky only sells fasteners in bulk quantities...and you can get the 'update kit"...it comes with Loctite
It runs good. I just wanted him to fix his mistake... He did, sort of. Cover is tight, but it now has 2 husky screws and 2 Stihl screws... I needed to get gas for the truck, mower, trimmers and splitter. The coil he put in doesn't have the ground wire, so kill switch don't work. A friend sent me a coil, I will put it on later. No worries, he won't see my again. With the Marathon app, gas here is $3.99.
Decided to see what else he had done/ not done to the Husky. The coil he put in doesn't have the ground wire, like this coil... But the small wire was hanging loose behind the coil......probably why the kill switch won't work...... I'll plug it on the spade and see if that works... Then there is tape on the plug wire Lesson learned....
If he was repairing a coil wire that he noticed had a bit of damage from rubbage I'd be ok with that....but it's definitely not right to charge you for a "new" coil, not connect the kill wire to the switch, and tape up the damage.....He obviously just had that lying around that was taken out of another saw. That was a hack job holy moly. Glad the saw is working again! Good job fixing it!