I have a Stihl FS-131R, Echo SRM-266 trimmer, also a Tanaka leaf blower. Can the mixture be adjusted on any of these?
Are newer 2-stroke carbs adjustable?
- Thread starter 92saturnsl2
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Many 2-stroke equipment can be adjusted but not with common tools.
They make special screwdrivers to adjust them.
https://www.amazon.com/TOPEMAI-Carb...b+adjusting+screwdriver&qid=1604195136&sr=8-2
They make special screwdrivers to adjust them.
https://www.amazon.com/TOPEMAI-Carb...b+adjusting+screwdriver&qid=1604195136&sr=8-2
Do a youtube search for Steve's small engine saloon and look around in all of his videos. He shows you where the adjustment screws are located on all of the different equipment and how to access them. He's a very entertaining Canadian youtuber and he's as addictive as South main auto repair llc videos.
Another Canadian with good YT channel is DonyBoy73
some are easier to adjust than others (plastic caps on top of screws, epoxy on top of screws, limited number of screws - ex. stihl 'intellicarb')...Echo PB-8010 has only one carb screw with a special adjustment tool required.....Stihl 500i chainsaw is fuel injected so no adjustments at all....
These are the last dying days of the 2-stroke unfortunately....EPA & regs are killing them away.
These are the last dying days of the 2-stroke unfortunately....EPA & regs are killing them away.
Most are adjustable, although I've found a few of the WalMart "throw away no name brand" weed trimmers to not have any adjustments.
Most 2-stroke equipment these days is jetted pretty lean for emissions reasons, which is why they can be a bear to start, and if any crud gets into the carburetor they run terrible.
Most 2-stroke equipment these days is jetted pretty lean for emissions reasons, which is why they can be a bear to start, and if any crud gets into the carburetor they run terrible.
Agreed. Unfortunately non-ethanol fuel is difficult if not impossible to find in many areas. I know in my own state it is next to impossible, and at most stations 93 octane contains E10. Tru-fuel is an option I recommend to my customers if they only use the machine sparingly, and it has been working well for them. Obviously for a commercial user or someone who uses the machine more frequently, tru-fuel can be cost prohibitive.
I doubt it's possible in manufacturing to make a non adjustable 2 stroke carb. Mass production would have enough variation to need to adjust each carb to a minor degree. But, after the factory makes adjustments, they seal them in some cases. They only have to err on the side of too rich and they're fine as far as they care.
Some are capped, some are weird screws, some are epoxied, but they can be changed. Believe me I do it all the time tuning Echo saws and such.
Some are capped, some are weird screws, some are epoxied, but they can be changed. Believe me I do it all the time tuning Echo saws and such.
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