Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: pigpen60 on October 05, 2014, 05:28:51 pm

Title: stihl carb screws
Post by: pigpen60 on October 05, 2014, 05:28:51 pm
my boy showed me his 026 I think, and it had red plastic adjusters and the low only moved like 1/4 turn. whats up? something we can work around?
Title: Re: stihl carb screws
Post by: pigpen60 on October 05, 2014, 07:00:51 pm
ok they're limiting thingies, whats the best method to remove these and thumb our noses at the epa?
Title: Re: stihl carb screws
Post by: Cut4fun . on October 05, 2014, 07:02:27 pm
EPA stops to keep you from getting full adjustment and possibly burning up saws.   I use drywall screw and remove them. 
Some say reinstall them back once done.
Title: Re: stihl carb screws
Post by: Cut4fun . on October 05, 2014, 07:02:55 pm
LOL you posted while I slow typed.
Title: Re: stihl carb screws
Post by: pigpen60 on October 06, 2014, 12:09:39 pm
you must be really slow for me to two finger a message  :D. whats your opinion on reinstalling the caps?
Title: Re: stihl carb screws
Post by: 660magnum on October 06, 2014, 12:27:34 pm
I like the caps for they help to hold the screw driver in the slot when the engine is running.

But . . . I remove the tabs from the caps so they do not limit the adjustment of the screw.
Title: Re: stihl carb screws
Post by: pigpen60 on October 06, 2014, 12:33:41 pm
so pull cover screw sheetrock screw in pull, cut tabs reinstall?
Title: Re: stihl carb screws
Post by: Cut4fun . on October 06, 2014, 01:13:52 pm
If someone else saw I do like Jim above. trim tabs reinstall.  If I dont trust the owner know how I leave tabs.

Mine I either just left off or trimmed tabs.
Title: Re: stihl carb screws
Post by: 660magnum on October 06, 2014, 01:52:50 pm
On most chainsaws the limiter caps help fill up the adjuster access hole. When you leave the caps off, small wood chips get into the air box area and plug the filter quicker.
Title: Re: stihl carb screws
Post by: JoeB on October 06, 2014, 08:21:31 pm
True X2.
Title: Re: stihl carb screws
Post by: pigpen60 on October 13, 2014, 01:37:53 pm
well the caps filling the hole aren't a worry, the plastic piece between the carb and the cover is missing. will have to look and see if we can find it. we tuned on it the other day and we had some popping out the exhaust on the top end while cutting. we give it some fuel and it quit. he was telling me its not an 026 now. he put a new long block in it and said its bigger now. any ideas?
Title: Re: stihl carb screws
Post by: 660magnum on October 13, 2014, 01:45:32 pm
The very last 026's had the bigger bore of of the 260's

Popping at high speed while cutting could be sharp pieces in the combustion chamber

or

Ignition problems like spark plug, ignition wire, coil, or coil spacing?
Title: Re: stihl carb screws
Post by: Cut4fun . on October 13, 2014, 01:45:57 pm
epa bigger cylinder IMO for 260 had 44.7mm bore might be what he means and the 026 was 44mm  not going to notice the difference IMO.

026 / Pro     1121    2.96    48.7                      2,800    14,000    

MS 260    1121    3.06    50.2                     2,800    14,000    
Title: Re: stihl carb screws
Post by: pigpen60 on October 13, 2014, 07:10:10 pm
my boy said the engine came from a fella on ebay and that when he received the engine it was wrapped in stihl marked paper. as for sharp pieces in combustion chamber are you talking about hot spots?
Title: Re: stihl carb screws
Post by: 660magnum on October 13, 2014, 10:14:51 pm
yes