STIHL The Official Stihl Chainsaws Thread

[Al Smith]

Usually it is the float valve in the carb that is leaking and/or may be improperly adjusted.

It's a diaphragm carb,there is no float valve .Now I do have an old Lombard that does have a float carb but it was built in 1956 .Now that SOB is contankerious .

 

[FergusonTO35]

I think he is referring to the fuel inlet needle on the metering side of the carb.

 

[MustangMike]

I think he is referring to the fuel inlet needle on the metering side of the carb.

Yes.

I don't like letting shops adjust my carb, half the time they hire people who don't know as much as you do.

If the saw has any mods (muff mod, etc) start with the Lo one full turn our, and the Hi 1 + 1/4 turn out. When it warms up a bit, make sure the saw 4 strokes (breaks up) at WOT if it is not in the wood, and cleans up in the cut. Likely you will end up with the Hi about 1 + 1/16 turn out, but this is just an educated guess. (If your carb has limiters, pull them).

The bottom screw is the idle adjustment. Try adjusting that to get the idle where you want it. If that does not work, adjust the Lo a bit, then go back to the idle adjustment screw.

You need to learn to tune your saw anyway, may as well do it now. If conditions change (or saws can adjust on their own), and it does not 4 stroke, turn that Hi screw out (counter clockwise). Running the Hi too lean will burn up your saw.

 

[lehman live edge slab]

Pulled a blown up 044 off the shelf that a local logger gave me. It let go due to a ripped boot. Piston and cylinder were junk so I took a used 046 cylinder I cleaned up and installed it. Polished ports, gutted muffler and opened up exhaust port on muffler. Runs well power of a 046 with less weight. Next thing is timing advance.

 

[RI Chevy]

You now got one a dem dere hybrids!

Sent from my SM-G930V using Tapatalk

 

[MustangMike]

Pulled a blown up 044 off the shelf that a local logger gave me. It let go due to a ripped boot. Piston and cylinder were junk so I took a used 046 cylinder I cleaned up and installed it. Polished ports, gutted muffler and opened up exhaust port on muffler. Runs well power of a 046 with less weight. Next thing is timing advance.

Looks like it has the arctic filter.

 

[RI Chevy]

Doesn't look like it fits the HD2 filter. Looks like the older style 044.

 

[lehman live edge slab]

Yep arctic filter and the heated handles still work. Hole for decompression didn't work out so well but it's there.

 

[lehman live edge slab]

I know these hybrids are a dime a dozen now but I've never had one and just recently started doing more modifications to some of my saws. Had the parts to do it so was basically free saw except my time.

 

[RI Chevy]

Cool. Best way to learn. [emoji106]

 

[lehman live edge slab]

Cool. Best way to learn. [emoji106]

What rpm should I tune this saw to? I know I'm pretty low at 12,500 no load. And what should I buy for a new tach only one I have is old. Local dealer gave me an edt2 Stihl tach when he went out of business.

 

[RI Chevy]

@dall
@Canadian farm boy

I'd venture to guess somewhere around 14000 to 14300 you'd be safe at.

 

[Canadian farm boy]

@dall
@Canadian farm boy

I'd venture to guess somewhere around 14000 to 14300 you'd be safe at.

Every saw is different. To many variables to say. I'd venture a GEUSS 14k. Maybe 13500

 

[MustangMike]

Exactly what CFB said (every saw is different), but don't tune by RPM, tune by sound. It must break up at WOT w/o load and clean up in the cut ... PERIOD! I don't care what the RPMs are.

 

[lehman live edge slab]

Every saw is different. To many variables to say. I'd venture a GEUSS 14k. Maybe 13500

Was going to try 13,500 and see how it gos

Exactly what CFB said (every saw is different), but don't tune by RPM, tune by sound. It must break up at WOT w/o load and clean up in the cut ... PERIOD! I don't care what the RPMs are.

Isn't quite cleaning up yet

 

[MustangMike]

Isn't quite cleaning up yet

Hybrids often rev high. raise it a little at a time till it cleans up.

2 Questions:

What carb are you running on it?

Do you know what your Hi and Lo settings are at?

 

[RI Chevy]

Thanks Mike & Mike. I knew the hybrids ran a little higher than normal.
But you are both right. Gotta tune by ear. Madsen's has a tune tutorial.

Sent from my SM-G930V using Tapatalk

 

[lehman live edge slab]

Hybrids often rev high. raise it a little at a time till it cleans up.

2 Questions:

What carb are you running on it?

Do you know what your Hi and Lo settings are at?

Stock fully adjustable 044 carb,fresh rebuild and about 1-1/4-1-5/16 turn out on low and about 1-1/4 out on high. When I was taught on how to set low we went factory setting out. Start saw warm up then screw low in till it stumbles start screwing jet out counting turns till stumbles again. Set jet a little richer than mid way between the two and check acceleration. Then hold open throttle turn hi speed in until you hear it pick up then richen back up till it just falls off. So far this has always worked for me. But also don't know if the hybrid tunes different and I've always tried to be a little on rich side final setting.

 

[PogoInTheWoods]

Sounds like you have it down. 14k is spec on the 044 and 13.5 for the 046.

 

[lehman live edge slab]

Shaved key about 20 thousandths. Finalized carb tune. Don't think I'll mess anymore with this one seems to cut real good and runs real nice.