To those who like the Intellicarb...

[treeclimber165]

Russ,
Getting to the fixed jet is easy, but somewhat time consuming. Remove the carb (remove air filter, disconnect throttle wire, fuel line, etc) and take the top cover off by removing the 4 tiny phillips screws. Carefully lift up the gasket and it is right there. It's the tiny brass colored plug that can be removed with a tiny flat screwdriver.
If your eyes are as bad as mine, you may need a magnifying glass to read the numbers stamped in the top. Stock on mine was 53. Reference past threads for parts numbers for the .56, .57 and possibly .58 jets. Be prepared to wait for them from your dealer (after pre-paying a non-refundable $5 each) since most dealers and few distributors have them in stock.

Or you could pick up an adjustable jet carb for $35 and set the jets yourself in less than 60 seconds.

 

[JimL]

Originally posted by treeclimber165
Russ,
Getting to the fixed jet is easy, but somewhat time consuming. Remove the carb (remove air filter, disconnect throttle wire, fuel line, etc) and take the top cover off by removing the 4 tiny phillips screws. Carefully lift up the gasket and it is right there. It's the tiny brass colored plug that can be removed with a tiny flat screwdriver.
If your eyes are as bad as mine, you may need a magnifying glass to read the numbers stamped in the top. Stock on mine was 53. Reference past threads for parts numbers for the .56, .57 and possibly .58 jets. Be prepared to wait for them from your dealer (after pre-paying a non-refundable $5 each) since most dealers and few distributors have them in stock.

Or you could pick up an adjustable jet carb for $35 and set the jets yourself in less than 60 seconds.

]


Your dealer charges you just to order parts?!?!
Thats nuts!

 

[JimL]

Originally posted by bwalker
Mike, When I bought the saw(November)I imediatly was not impressed with its performance. Had no power in the cut. I fiddled with it and got it to cut real good with the LS screw backed out about 3-4 turns. The problem was the saw idle like ???? and burned real dirty with the LS set like this. I then took the saw back to my dealer who checked it for air leaks and any other mechanical problems. There where none. I then read on this board about the fixed jet, so I tore into the carb and replaced the stock jet(52?) with a 57. It runs OK now, But by spring time it will be too rich. Lack of adjustability stinks for someone like me that lives in a area that sees a range of temps from 0-100.

I still find it strange that the saw has to be "adjusted" for the seasons. I live in the 0-100 degree temperature area as you do, and I can run all my saws the same year round. 038's, and 066's.

 

[treeclimber165]

Jim-
You STILL do not get it. You keep defending the NEW carb setup based on your experience with the OLD setup on your 038's and 066's(all with fully adjustable carbs). Since you are talking out the side of your A$$, why don't you stay out of discussions on the NEW carbs untill after you actually use one.

 

[glens]

Brian,

In Jim's defense, he'd said he runs his saws year 'round <i>without</i> adjustment.&nbsp; At least that's the way his plain English reads to me.

You'd said somewhere the other day that ALL the new saws on your dealer's shelf had non-adjustable carbs.&nbsp; Which models are you referring to?&nbsp; The MS360?&nbsp; The MS440?&nbsp; The MS460?&nbsp; How about the 066?&nbsp; Just because they have an Intellicarb doesn't mean they have fixed-jet carbs - they are distinct characteristics.

Glen

 

[treeclimber165]

There was NO high speed adjustment screw on any carb of any Stihl saw on my dealer's wall. The exceptions were the 066 and 088, both last year's models (old style gas caps also). He had most models from the 009 to the 088 displayed.
Yes, I can figure out if a saw has a high speed jet screw.

I rarely ever have to adjust my carbs either, once break-in is completed and I get it set up properly. The problem with the fixed jets is setting the saw up properly to start with! Had my 026Pro about 8 months and STILL do not have it set like a real 026 should run (I've owned several).

 

[JimL]

You got me curious, ill look tomarrow.
The 066 isn't made in the USA yet so the caps are the same still. Not sure why but they are.

 

[JimL]

Originally posted by treeclimber165
Jim-
You STILL do not get it. You keep defending the NEW carb setup based on your experience with the OLD setup on your 038's and 066's(all with fully adjustable carbs). Since you are talking out the side of your A$$, why don't you stay out of discussions on the NEW carbs untill after you actually use one.

"It runs OK now, But by spring time it will be too rich. Lack of adjustability stinks for someone like me that lives in a area that sees a range of temps from 0-100."

Sure a s#hit sounds to me like he has to adjust the carbs when the seasons change?

 

[glens]

Brian,

I'm sure you do know how to identify high and low-speed adjustable jets.&nbsp; Your statement got me curious since in the recent past Stihltech has said it looks like they're going away from fixed-jet saws again, and then today the post about the 270 which implied it has the three external adjustment screws.&nbsp; And I still get the impression by your language that you're saying the Intellicarb is bad because it uses a fixed HS jet.&nbsp; So on the chance that all the saws on display at your dealer had Intellicarbs, and that could lead you to believe they all thereby had fixed jets, I felt the need to ask you to clarify.&nbsp; Am I to understand you to be saying that you looked at the 360, 440, and 460 and saw either no HS hole or an "empty" one?

Glen

 

[jokers]

Hi Brian, thanks for the heads up on finding the jet. I`m thinking that maybe I`ll just take it out and bore it a larger size, might keep doing this until I`ve got it running where I want it. I don`t see any harm in this, do you? The line about 5.5 minutes and thanking you was in reference to you stating that you are only getting about 11 minutes per tankful on your 260.

glens, maybe the fixed jet Intellicarb is right on the hairy edge of being too lean and that`s why the need to be able to fine tune is so dramatic. I`ve had alot of saws over the years and many did not need seasonal or periodic adjustment, but many have, maybe the carbs on the newest saws have smaller passageways or something which makes them more susceptible to needing a tweak, this could also help explain JimL`s lack of a need to tweak since he has stated that all of his saws are at least a few years old. At any rate, the problem I am experiencing with the Intellicarb is real enough that I have to fix it or I will be smoking my saw, never mind all of the performance that I`m giving up. Russ

 

[treeclimber165]

Glens-
The only reason I do not like the new carbs is because of the fixed high speed jet. Get off it already.

I could care less if a carb is an 'Intellicarb' or not. I care if it takes $$$$ and 6 months to adjust the high speed jet!

I will not continue to repeat myself to you about the fixed jet carbs on every saw at my dealer's display.

 

[bwalker]

I still find it strange that the saw has to be "adjusted" for the seasons. I live in the 0-100 degree temperature area as you do, and I can run all my saws the same year round. 038's, and 066's.

JIML, If you know anything about two strokes you will realise that it is impossible for a two cycle motor to run at peak performance year round with the same carb settings.

Glens, brian, etc, All the new saws at my dealer have the same adjusters as last year. My 044 has both adjusters.

 

[glens]

Brian,

You have not repeated anything about the saws I asked you about.&nbsp; You have yet to answer the question.&nbsp; Don't bother, though, I'll get my information from reliable sources.

Thanks anyway.

Glen

 

[treeclimber165]

Originally posted by glans
Brian,

You'd said somewhere the other day that ALL the new saws on your dealer's shelf had non-adjustable carbs. Which models are you referring to? The MS360? The MS440? The MS460? How about the 066? Just because they have an Intellicarb doesn't mean they have fixed-jet carbs - they are distinct characteristics.

Glans

A carb that does not have a high speed adjustment screw is a non-adjustable carb. I could care less if it is an 'Intellicarb' or not. Fixed jet carbs suck, and every saw at my dealer's has NO high speed adjustment screw, and therefore is a non-adjustable carb! (This does not count replacing the high speed jet as I've done several times without satisfactory results.)

See? Now you got me repeating myself. Yes, I've answered your question (for the last time).

 

[stihltech]

jets

One missing screw and look what happens. I love it!
I never waited 6 months to get a jet and I never made any body prepay.
One size over with a number drill has cured every 260 I have worked on.
Yes, some people understand how to adjust a carb on a saw, but there are many more who do not. You can usually tell by the score marks on the piston.
Is it a great idea, nope. Does it work, yup. Did EPA bring it to us, yup. But I have dealt with EPA since '74 on cars, so what's new?
I would take a close look on the 260 Dennis did, have seen it happen before. It is also water season, check it out.

 

[glens]

[Tue Feb 11 18:09:04 EST 2003

Answer to Mike's question about "thumping" removed, which is now not pertinent due to the moderator subsequently pruning some posts.&nbsp; Regrettably, this editing now strands Fish's statement a couple of posts down; sorry Fish.&nbsp; Everything else in this post is left unaltered.

Glen]

As to the original subject, if the carb was metering correctly when it arrived from Dennis' shop and it suddenly changed to too lean, that would indicate an air leak or a partially obstructed fuel passageway or something of that nature.

Glen

 

[tree monkey]

smarter then the teacher, and never been to school

 

[jokers]

Glens, good point if the carb was metering correctly in the beginning, but then changed, but actually it`s shame on me because I started the saw up, revved it for a few seconds and then put it to work. Maybe it was working correctly and maybe it wasn`t. Maybe I had too much confidence in the belief that it was setup correctly to try and disprove it before I lost that opportunity forever. At any rate, I did the obligatory leak checks on the runninnng saw and did not observe any indication of a leak which brings us back to my statement about bringing the saw to the shop where they could do a leakdown check for me since I don`t have the specific plates I would need to do it myself and I don`t have the time to do a more significant repair than changing a jet right now anyway. I do however believe that we are going to find the jetting fubar. I frankly don`t understand the patent defense of the Stihl product by guys like yourself when there are people like Stihltech admitting that he has had to ream jets on 260s to set them right and even Stihl has multiple jet sizes. You also discount the experience and knowledge of others on this board on a routine basis when most of your opinion seems to be theoretical. I acknowledge that you are an intelligent man and probably most everyone else here recognizes that, but we also see smugness and condescention in many of your posts which detracts from any sheen you have from being a smart fvck. Of course you are right that the issue is not the Intellicarb but rather the fixed jet, well you don`t really admit that either, but since everyone here equates the MS260 Intellicarb with a fixed jet it is semantics to argue that the issue is not the Intellicarb yet you persist. What exactly do you want us to concede to you? Russ

 

[Fish]

I got lost on the "Thumping" tangent.

 

[bwalker]

As to the original subject, if the carb was metering correctly when it arrived from Dennis' shop and it suddenly changed to too lean, that would indicate an air leak or a partially obstructed fuel passageway or something of that nature.

Or maybe it was caused by fuel, altitude,temp or a a combination of the three. Dennis is located in BC which I would imagine has a higher altitude than Russ's home in New york.

One size over with a number drill has cured every 260 I have worked on.

Having to resort to hack tactics to get a new saw to run right is criminal. Also by using a fixed jet you lose the ability to fine tune that is possible with a HS screw. What if the best performance is somewhere between a 58 and a 57?

You can usually tell by the score marks on the piston

Which is what would have happened had my saw been run very long with the stock jet in it. Face it ST the fixed jet stinks. I am a Stihl guy, but you and Jiml take brand loyalty to a whole new level. I think it has clouded your judgment.