Stihl TS400 stone cutter not working (no compression) so replaced piston rings, new gasket kit and clean for carb new spark plug (good spark when engin turned over) cleaned all air filters, replaced all fuel filters checked all wiring from spark generater to spark plug, sleeved earth cut off wire but will still not fire.

check Stihl Decompression Valve - 4238 020 9400
https://www.diyspareparts.com/parts/stihl/decompression-valve-4238-020-9400/

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Stihl TS400 / TS420 Ignition Module Repair - YouTube

? 7:06
https://www.youtube.com/watch?v=AvPv88SELXs
May 1, 2011 - Uploaded by donyboy73
Learn HOW TO REPLACE The Ignition Module in your StihlTS400 / TS420 ... I have a homelite 33cc Ranger it has no sparkat the plug but if I put a ... a good spark and there is fuel getting into the cylinder head also what are ...

All comments on Stihl TS400 / TS420 Ignition Module Repair

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Donyboy73, I hava a Stihl TS 420 and just replaced the pull rope (not sure what's ... a good spark and there is fuel getting into the cylinder head also what are your ..... Hi mate, i have no spark to my plug?? i have tried a brand new plug and still ...

Small Engine Ignition: Ignition Wires, Chainsaw Spark Plugs ...

www.hlsproparts.com/small-engine-ignition-parts-s/149.htm
66 results - HL Supply has the small engine ignition parts that will get your ... parts right here: ignition wires, chainsaw spark plugs, ignition coil sets, ... Please don't hesitate to contact us if you have any questions. ... Stihl TS400 (3-bolt old style), TS460 ignition coil with wire and cap ... Fits: Stihl TS410 and TS420 cut off saws

The float valve is stuck open. It's time to rebuild the carburetor.

could be fuel pipe bent/hole in fuel pipe or yes could be carb

if you have spark and fuel then id be looking at lack of compression.. damaged piston ring or damaged crank seal/gasket

Check the boot between the carb and the cylinder, it could be an air leak. also check the compression. If the piston rings are damaged then it wont have the compression to pull the fuel through. Could also be a damaged fuel line, or plugged filter.

sounds like your getting air leak around a gasket

All these people are missing a basic thing: check the compression. If you did all thus work yourself, you may have reused the head gasket or not installed the new one correctly. It will run with no load, but once force in exerted, the pressure finds the leak and exploits it. There is a reason 2-cycle engines run at 130-160 psi normally.

Are you using new fresh fuel ?

how much fuel can be put into a stihl saw ts 400 and how long will the fuel last while in constant use