I am working on a stihl ts 420 cut off saw with no spark.

SOURCE: how do i replace the pull cord on my stihl cut off saw

it is gonna take some time,take all screws off housing,pull casing off,be careful with the rewind spring and be sure you have spring wound-up for re-install.

Posted on Apr 24, 2009

SOURCE: hi there; my stihl ts 420 does not start easily

replace the decompression valve. also check for carbon buildup on top of piston. usually when a saw stops on its own after 5 min or so.... the piston and jug are scored and need to be replaced.

Posted on Aug 03, 2010

Joseph Mueller

• 346 Answers

SOURCE: where is location of serial number on a 420 stihl

The Serial is engraved into the aluminum right next to the muffler. Look from the top down and you will see it. Good luck

Posted on Feb 22, 2011

Ron Sanders

• 118 Answers

SOURCE: not getting spark when starting

[email protected] HI GRYDERT your problem could be your on, off switch. This might sound funny, but switch the on off switch real fast several times, then see if you havee fire. If not check your spark plug. If you have a n
ew one try it. If that don't work check the connection at the plug to be sure it is makiong contact with the plug. If all this does't work you will have to go inside to the coil. They don't usually go ba d but it could. But first check to be sure it isn't grounded at the small wire from the switch. Good Luck.

Posted on Jul 01, 2011

SOURCE: I have a stihl ts-410 cut off saw. it will start and idle but when i squeeze the throttle it dies. how do i adjust the carb?

if this machine ran ok before this problem,and no one has adjusted the carb,then i would check the crank seals.i have just had this problem.and it was the seal on the puller side,though i replaced both whilst i was at it.hope this helps my freind.

Posted on Jan 30, 2012