Stihl MS200T Won't Start

[revgaryng]

My MS200T suddenly quit running after working great on a small job and a recent overhaul at Stihl shop. A very small amount of white smoke came from the area of the flywheel/coil like something had overheated when it stopped. It would not restart! I checked for spark, cleaned the coil, flywheel and magnets, and replaced spark plug with new one. The old plug was firing orange. The new spark is white or blue/white with spark tester and new plug is firing white when tested and grounded outside cylinder. I disassembled and cleaned carb and replaced fuel/breather line. New fuel with 50-1 mix. Cleaned fuel filter and breather filter, which also seem clear, and even tried starting with both removed in case they were blocked. The spark arrester screen was missing when I got this baby, so no obstruction there. I've tried spraying ether/starting fluid into carb and also directly into cylinder to start and she doesn't even try to start even though spark plug is firing and there's ether in the cylinder. I'm not hearing combustion. Still seems to have compression, but doesn't seem to even try to start. Any ideas welcome. Thank you, all. This one has me "STUMPED!" No pun intended!

 

[lone wolf]

My MS200T suddenly quit running after working great on a small job and a recent overhaul at Stihl shop. A very small amount of white smoke came from the area of the flywheel/coil like something had overheated when it stopped. It would not restart! I checked for spark, cleaned the coil, flywheel and magnets, and replaced spark plug with new one. The old plug was firing orange. The new spark is white or blue/white with spark tester and new plug is firing white when tested and grounded outside cylinder. I disassembled and cleaned carb and replaced fuel/breather line. New fuel with 50-1 mix. Cleaned fuel filter and breather filter, which also seem clear, and even tried starting with both removed in case they were blocked. The spark arrester screen was missing when I got this baby, so no obstruction there. I've tried spraying ether/starting fluid into carb and also directly into cylinder to start and she doesn't even try to start even though spark plug is firing and there's ether in the cylinder. I'm not hearing combustion. Still seems to have compression, but doesn't seem to even try to start. Any ideas welcome. Thank you, all. This one has me "STUMPED!" No pun intended!

Well, I think you should pull the muffler and look for scoring on the piston. How does the compression feel, do you have a tester? If no tester, hold the starter handle and see how fast the saw drops to the floor.
And EXACTLY, what did the shop do ?

 

[2StrokeFondler]

My MS200T suddenly quit running after working great on a small job and a recent overhaul at Stihl shop. A very small amount of white smoke came from the area of the flywheel/coil like something had overheated when it stopped. It would not restart! I checked for spark, cleaned the coil, flywheel and magnets, and replaced spark plug with new one. The old plug was firing orange. The new spark is white or blue/white with spark tester and new plug is firing white when tested and grounded outside cylinder. I disassembled and cleaned carb and replaced fuel/breather line. New fuel with 50-1 mix. Cleaned fuel filter and breather filter, which also seem clear, and even tried starting with both removed in case they were blocked. The spark arrester screen was missing when I got this baby, so no obstruction there. I've tried spraying ether/starting fluid into carb and also directly into cylinder to start and she doesn't even try to start even though spark plug is firing and there's ether in the cylinder. I'm not hearing combustion. Still seems to have compression, but doesn't seem to even try to start. Any ideas welcome. Thank you, all. This one has me "STUMPED!" No pun intended!

Compression: check
Fuel: check
Spark: check
Spark at the right time? Can you check if the magnets are at the right spot when at TDC?

 

[lone wolf]

If you don't know where the magnets should be, just pop the Flywheel off and see if the key sheared. Take the 13 mm flywheel nut off with a 3/8 impact gun, CC rotation is off, then hold the saw up off the bench slightly and whack the crank end with a brass or lead hammer ONLY use a soft hammer, it will pop right off, then see if the key sheared.

 

[cscltd]

If it was recently repaired, I would take it back to them-before ripping everything apart as they probably won’t appreciate it taken apart and then ask to fix it under warranty?
How recent is recent? as a lot of people say they bought or had something repaired recently, yet it was 2-3 years ago