Solo 626 - Tillotson HL-146A carburetor help

[Terminus]

Dear users! We bough an old Solo 626 chainsaw which installed with Tillotson HL-146A type carburetor. The "H" screw is missing from the carburetor. If you have this type of carburetor then please take a photo for me about the "L" and "H" screws what is the difference, I would like to make somehow a new "H" screw because I did not found any picture about the size and form of H screw for this carburetor. We would like to give a new chance for this old chainsaw. Many Thanks!

 

[pioneerguy600]

I work with many of the Tillotson carbs from vintage chainsaws but my master manual does not include your particular carb. My best advice is to contact one of these branches of Tillotson and they most likely can find you the part for your carb, link below,

https://tillotson.ie/contact-us/

 

[HarleyT]

Try this one. I doubt that the tip is identical, but may be close enough..
https://www.ebay.com/itm/Stihl-OEM-1110-122-6800-Adjustment-Screw/142492956910

 

[pioneerguy600]

Try this one. I doubt that the tip is identical, but may be close enough..
https://www.ebay.com/itm/Stihl-OEM-1110-122-6800-Adjustment-Screw/142492956910

That appears to be an L side screw, what model is difficult to tell. The HL used many different screws, tip design ,length, thread and diameter.

 

[HarleyT]

Yeah, I know.

This screw fits both sides on the TS350.

I have an old Tillotson book that lists individual parts for each carb model somewhere, unless I e-bayed it.....

 

[Terminus]

Hi for everyone, thanks for all reply!

HarleyT: We tried similar type of screw from newer Tillotson carb, but it is too short for Tillotson HL-146A.
One information: The "L" screw is longer (length is around 60 mm) than average Tillotson "L" screws (which installed to Stihl 045, 056, 075, 076)
Then probably "H" screw is similar long as "L" screw.

 

[pioneerguy600]

Yeah, I know.

This screw fits both sides on the TS350.

I have an old Tillotson book that lists individual parts for each carb model somewhere, unless I e-bayed it.....

I have the Tillotson Master manual but it don`t list this particular carb. Lots of the vintage chainsaws ran the HL carbs and I have many basket cases in buckets, might even have a H side screw that would fit but would need to have the carb in hand to be certain. The H side one usually has the more > shaped metering end but not always. Hl`s could have metering screws on either side and even in the rear, some had two H side adjusters/screws. A pict of the OP`s carb would be of some help.

 

[pioneerguy600]

The only mention in my manuals of Solo saws using HL carbs is the model 239 and 296. Those carbs used #43-401 H needles in them. No dimensions given.

 

[HarleyT]

He might go to some of these forums and learn German, and ask one of these guys.
https://www.bing.com/images/search?q=solo+626&form=HDRSC2&first=1&cw=1117&ch=447

There are a couple of pics of the carb side with the cover off, but they don't tell much. Just click on the site's link at the bottom of each pic, and it will take you to the original post..

 

[Terminus]

L-screw is on the Left side of carburetor, and H-screw is on the Right side of carburetor (their place is almost mirrored)

 

[HarleyT]

Looks like a beast!!

 

[HarleyT]

here is a shot of the right side.

 

[Terminus]

Looks like a beast!!

Yes, it looks like a beast. But the power is not too big, just 70 ccm and around 5 HP, and its weight is almost double of a new 5 HP Stihl chainsaw. I have uploaded pictures about the carburetor and the L screw, you can find in my previous post.

 

[HarleyT]

Can you see threads in the hole? Possibly a fixed jet carb?

 

[pioneerguy600]

Can`t see threads but it looks like its drilled. If fuel runs out that hole it is meant to have a screw.

 

[Terminus]

yes, there is a thread in the "black hole". We tried with different screw but it was too short for this hole. You can see on my picture that "L" screw is around 50 mm long, so I think probably "H" screw is similar long.

 

[HarleyT]

Did you try the "L" screw?

 

[Terminus]

Did you try the "L" screw?

No, I didn't try yet. Do you think that L screw and H screw is the same on this carburetor?

 

[HarleyT]

Bolt this puppy on to just see how she runs!!
https://www.ebay.com/itm/Carburetor...646370?hash=item2f2e15d7e2:g:FPoAAOSwJhdbmh1B

 

[HarleyT]

No, I didn't try yet. Do you think that L screw and H screw is the same on this carburetor?

Well, looking at the carb on a Stihl TS350, they use the same screw for both sides. So it is possible. But be careful, many times the high and low screws will have a different pitch threads.