bowtieman427
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- Sep 2, 2014
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14 yr old son and I cut firewood for our home. His goto saw is a Stihl 026 which use to run very well. latley it has been having issue to continue running. We tweaked on the carb and needless to say it got worse. I will start but will NOT idle at all if WOT it will go to about 8000RPM then quits. Cleaned carb reinstalled and no change. Blocked off the I and E. applied vacuum and pressure to the impulse line and it was 0. Figure it is time to give the saw a good going over refresh install new crank seals, fuel, impulse line, maybe new intake boot. Basically taking it all apart for a good cleaning and freshen it up. Presently looking through the I & E piston and rings looks pretty good do not have a compression gauge that will work on the saw but visually look nice. Son wants to take the head off and port and polish as well as modify the muffler 1 hole to 3 or 4. Wants to make it run a lot better.
1) If we take the head off if we see any damage and must get piston or rings do we rehone the cylinder ?
NOT sure if the 026 is chrome, or NIK-SIL. or how to tell. I assume Nik-Sil would see honing marks but not to sure with chrome or if just AL. I also know Nik-Sil need a special hone. If going through the effort of taking the head off I would get new rings that is just me, but in this case not to certain what to do. Not sure if they are lined I would assume they were lined because AL is pretty soft stuff.
2) If we got new rings are they made specific to the cylinder lining ?
3) If these are chrome lined and no honing how well do new rings seal up ?
4) If we are going though the trouble of taking the head off and if there is any damage not noticed by the looking in the I or E should we just buy an engine kit like off ebay assuming the rings and cylinder are compatible.
Any ideas please share. This saw is rough around the edges but was a good cutter with the 18" bar. Hope we can rebuild it
1) If we take the head off if we see any damage and must get piston or rings do we rehone the cylinder ?
NOT sure if the 026 is chrome, or NIK-SIL. or how to tell. I assume Nik-Sil would see honing marks but not to sure with chrome or if just AL. I also know Nik-Sil need a special hone. If going through the effort of taking the head off I would get new rings that is just me, but in this case not to certain what to do. Not sure if they are lined I would assume they were lined because AL is pretty soft stuff.
2) If we got new rings are they made specific to the cylinder lining ?
3) If these are chrome lined and no honing how well do new rings seal up ?
4) If we are going though the trouble of taking the head off and if there is any damage not noticed by the looking in the I or E should we just buy an engine kit like off ebay assuming the rings and cylinder are compatible.
Any ideas please share. This saw is rough around the edges but was a good cutter with the 18" bar. Hope we can rebuild it