254/262 carb - difference between them

[BigDee]

Filter elbow and especially filter inlet are a bottle neck on the 254 also. Open them both up as much as you can.
Close to the same gains as the carb swap.

Yes the filter inlet and the muffler are the big easy gains.

 

[Tor R]

thanks for the input BigDee and super3, writing down in my book now
My cylinders are only Kolbenschmitt brand, 1 with decomp valve (98), 2 withouth (88-89), and 1 cylinder who had thin ring piston (87).
I have another 87 cylinder as well, but with a broken fin

 

[BigDee]

I just looked -- The twist drill I use to open up the air filters is 5/8, .625 in olde English. But I think it could be a bit larger and I'll bet a 16mm would work. I use the same bit to start the process on each side of the elbow, and finish it with a pocket knife.

 

[Tor R]

I just looked -- The twist drill I use to open up the air filters it 5/8, .625 in olde English. But I think it could be a bit larger and I'll bet a 16mm would work. I use the same bit to start the process on each side of the elbow, and finish it with a pocket knife.

Thank you, me written down all the ideas you provide me with

 

[Tor R]

I've studied the innlet and the elbow for the 254.
Using a 120 carburetor would just need a few modification on innlet&elbow to the 254.

a 87 carburetor is something else.
The elbow can be modded so it will work. Innlet is another story. It seems to little in size to do a modd big enough for a 87 carb. I see if I can get a good tube epoxy glue, and try to make one new one.

Picks to come to show the different from 254/262 innlet.

 

[whitepine1]

Hi,

I am into carbs nowadays

I have a collection HDA 35A, HDA 35B for the 254's.
A collection HDA 120, HDA 87 for the 262's.
I know the HDA 87 is the one to have for the 262, so all off those get a full carb cleaning and rebuild.

What is the different between the HDA 35, 120 and 144?

On all off them, the little fuel niddle inside have a plastic/rubber tip while a brand new ones have metal also on the tip.
Why? (Was the old niddle type a lousy one)

Anything else I should be aware off?
Thanks for any help and input.

Regards
Tor

Hello,
Would you be willing to sell one of your HDA-87 carbs to me?

 

[Huskvarna hotellgäst]

Here is a picture of the innlet niddle, old plastic style to the left, the new style looks to be pure metal.

Actually, the silver-grey tipped needle in the photo looks exactly like the original HDA type from the 1980s - i.e. stainless steel with a shiny compressible tip. Never seen an orange-tipped one myself.