Hi!
I bought used Stihl 025 (made 1995) few weeks ago, ran few tanks of 95E gas mixture with it. It ran well but when it got warm it started to stop when idling. I didn't use it since yesterday so I made new gas mixture and this time it was fresh higher octane 98E instead of 6 month old gas I used earlier.
When it got warm it started stopping on idle just like earlier, so I adjusted idle screw a bit back so chain wasn't moving anymore. Liff was good, sun was shining and chainsaw was idling waiting me to feed sawhorse. After second tank refill Stihl stopped in halfway log, and I can't start it anymore, It doesn't even promise starting.
This is what I have tried to troubleshoot:
- Plenty of gas =)
- Air filter is clean
- Spark is ok.
- Muffler cleaned inside out.
- Primer is filled with gas.
- Removed spark plug and pulled starter rope 40 times with switch in off-position while holding trigger. This helped earlier with like 10 pulls when I forgot switch on choke-position when I tried to start warm saw.
- Putting a bit of gas in carb throat, throat opens and closes ok when triggered.
- Then i got idea of restoring HL-screws to manufacturers default position, closed both and 1 full turn open, original settings were something totally different, more like 2.5 turns open.
When you test compression by hanging chainsaw in starting rope should it resist quite much, maybe even not to drop much? If this is true, does it apply with Stihl elastostart? I mean it resists a bit and then start giving away so saw drops slowly towards floor. Unfortunately I didn't check this earlier when it worked. When I tested Partner 5000 this way, it was resisting much, dropped maybe 5 inches and hung there.
There was some black liquid around the button (for easy starting or something like that) on right side of cylinder. Same black thingy oozes a bit from muffler. Maybe this is just because of pulling starting rope many times without chainsaw actually starting.
If chainsaw stopped working because of changing gas and therefore carb need adjustments (why didn't it stop right after I changed type, that would have give better clue) or something is leaking/broken I'll have Stihl tech to check it out before making decision to get it fixed or get it refunded on exchange to new Jonsered CS 2141S or a bit bigger.
Okthnxbye, I'm off to dream about chainsaws! Thanks for great forum!
I bought used Stihl 025 (made 1995) few weeks ago, ran few tanks of 95E gas mixture with it. It ran well but when it got warm it started to stop when idling. I didn't use it since yesterday so I made new gas mixture and this time it was fresh higher octane 98E instead of 6 month old gas I used earlier.
When it got warm it started stopping on idle just like earlier, so I adjusted idle screw a bit back so chain wasn't moving anymore. Liff was good, sun was shining and chainsaw was idling waiting me to feed sawhorse. After second tank refill Stihl stopped in halfway log, and I can't start it anymore, It doesn't even promise starting.
This is what I have tried to troubleshoot:
- Plenty of gas =)
- Air filter is clean
- Spark is ok.
- Muffler cleaned inside out.
- Primer is filled with gas.
- Removed spark plug and pulled starter rope 40 times with switch in off-position while holding trigger. This helped earlier with like 10 pulls when I forgot switch on choke-position when I tried to start warm saw.
- Putting a bit of gas in carb throat, throat opens and closes ok when triggered.
- Then i got idea of restoring HL-screws to manufacturers default position, closed both and 1 full turn open, original settings were something totally different, more like 2.5 turns open.
When you test compression by hanging chainsaw in starting rope should it resist quite much, maybe even not to drop much? If this is true, does it apply with Stihl elastostart? I mean it resists a bit and then start giving away so saw drops slowly towards floor. Unfortunately I didn't check this earlier when it worked. When I tested Partner 5000 this way, it was resisting much, dropped maybe 5 inches and hung there.
There was some black liquid around the button (for easy starting or something like that) on right side of cylinder. Same black thingy oozes a bit from muffler. Maybe this is just because of pulling starting rope many times without chainsaw actually starting.
If chainsaw stopped working because of changing gas and therefore carb need adjustments (why didn't it stop right after I changed type, that would have give better clue) or something is leaking/broken I'll have Stihl tech to check it out before making decision to get it fixed or get it refunded on exchange to new Jonsered CS 2141S or a bit bigger.
Okthnxbye, I'm off to dream about chainsaws! Thanks for great forum!
Would you have guessed it had spark plug changed, air leak fixed and carb adjusted? 
