Stihl ms201t 2013 no spark/won't start

[ruttingbuck]

Hi,

I have a stihl ms201t that I loaned to soap a few months ago and he told me cut out and wouldn't restart. Had it back and checked and no spark, put a new plug in and still nothing. Have been real busy with work and had no time to check suspect coil so sent in to local repair shop ( with a hole borer and hedge trimmer) been chasing the useless chimps for 4.5 weeks and finally told them to give it all back, he apparently fitted a new cool and still no spark (stop switch eye fine I checked continuity myself) he reckons stihl have a faulty batch of coils. The saw itself has literally only done about 8 hrs work of that! Any ideas? Does anyone know resistance readings to test the coil? Any help appreciated

 

Will

[spudulike]

Hi,

I have a stihl ms201t that I loaned to soap a few months ago and he told me cut out and wouldn't restart. Had it back and checked and no spark, put a new plug in and still nothing. Have been real busy with work and had no time to check suspect coil so sent in to local repair shop ( with a hole borer and hedge trimmer) been chasing the useless chimps for 4.5 weeks and finally told them to give it all back, he apparently fitted a new cool and still no spark (stop switch eye fine I checked continuity myself) he reckons stihl have a faulty batch of coils. The saw itself has literally only done about 8 hrs work of that! Any ideas? Does anyone know resistance readings to test the coil? Any help appreciated

 

Will

 

Take the kill wire off the coil, check the gap between flywheel and coil is correct and see if you have a spark. If you don't, it is your coil - as long as you have tried a couple of plugs!

[TORNADOS7]

With electronic ignitions it's a bit of a case of either it sparks or it don't so I'd suggest it's either the coil (can't see it being the coil though trusting that he really has replaced it of course) or the wiring somewhere, shouldn't be to hard to find a dodgy wire being as there ain't much of it in there !...

[Stubby]

Could the fly wheel key have sheared causing the timing to be out ?

[spudulike]

Could the fly wheel key have sheared causing the timing to be out ?

 

That would just knock the timing out, it would still spark OK but the spark would be in the wrong place stopping the machine running but in some cases may cause an alarming backfire (retarded ignition).

 

Some saws need a very brisk pull on the starter - the MS660 is one of them and some machines need just a light pull - many of the older machines are like that - an 020AVT will spark on the slightest of pulls! I can't recall if the MS201 needs a brisk pull or not!

[ruttingbuck]

Thanks spud,

It's had a couple of plugs out in it to test. The guy at the repair shop reckons stihl has a batch of faulty coils!!!!

[spudulike]

Thanks spud,

It's had a couple of plugs out in it to test. The guy at the repair shop reckons stihl has a batch of faulty coils!!!!

 

Worth taking the saw in and getting them to make sure the next one is good then, not a big job for them to fit and test:thumbup: