MorganE95
ArboristSite Lurker
So id like to explain the whole situation.
I inherited a Stihl MS-391 along with a couple other models, as my first chainsaws. ill call it Saw A .
And at some point or another and for some reason that I'm not exactly clear on. While i was running the saw, as i was first learning about chainsaws. And somehow managed to run it so hard that the threads on the cylinder where the spark plug screws into, had stripped almost completely because the spark plug had gotten blown out and took the threads with it. So when I noticed that. I made the plan to buy a new cylinder and rebuild the saw.
Some time went by and in that time i had gone out and purchased another MS-391 off of craigslist which started, and ran beautifully. I'll call that saw B.
So I finally managed to order the new cylinder and piston and ignition coil and sprocket for saw A. And then one of my workers proceeded to accidentally run saw B over with a trailer breaking the handlebar and bending the bar. And at this time i almost had Saw A put back together with my new parts. But upon putting it back together, i go to fire it up and no spark. So with a general basic knowledge of how chainsaws fire up. I tested to see if the spark plug was getting spark and nothing so i had came to the assumption of bad ignition coil even tho it was new. I said hey sometimes you just get unlucky and come across a faulty part. So to save me some time, i just took the ignition coil that i knew still worked great off of saw B. Along with the same spark plug and flywheel which i had just used and ran perfectly on Saw B. And i installed those parts onto Saw A, which completely the reconstruction of Saw A. But when I tested it. Still nothing.
I want to apologize for my long drawn out explanation but im stumped and haven't really gotten anywhere when asking the people i have so far. So I'm reaching out to the internet. So does anyone have any more tips cause im determined to get this thing running.
I inherited a Stihl MS-391 along with a couple other models, as my first chainsaws. ill call it Saw A .
And at some point or another and for some reason that I'm not exactly clear on. While i was running the saw, as i was first learning about chainsaws. And somehow managed to run it so hard that the threads on the cylinder where the spark plug screws into, had stripped almost completely because the spark plug had gotten blown out and took the threads with it. So when I noticed that. I made the plan to buy a new cylinder and rebuild the saw.
Some time went by and in that time i had gone out and purchased another MS-391 off of craigslist which started, and ran beautifully. I'll call that saw B.
So I finally managed to order the new cylinder and piston and ignition coil and sprocket for saw A. And then one of my workers proceeded to accidentally run saw B over with a trailer breaking the handlebar and bending the bar. And at this time i almost had Saw A put back together with my new parts. But upon putting it back together, i go to fire it up and no spark. So with a general basic knowledge of how chainsaws fire up. I tested to see if the spark plug was getting spark and nothing so i had came to the assumption of bad ignition coil even tho it was new. I said hey sometimes you just get unlucky and come across a faulty part. So to save me some time, i just took the ignition coil that i knew still worked great off of saw B. Along with the same spark plug and flywheel which i had just used and ran perfectly on Saw B. And i installed those parts onto Saw A, which completely the reconstruction of Saw A. But when I tested it. Still nothing.
I want to apologize for my long drawn out explanation but im stumped and haven't really gotten anywhere when asking the people i have so far. So I'm reaching out to the internet. So does anyone have any more tips cause im determined to get this thing running.