Tillotson HS-228A, B, C series and the 281xp

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7hpjim

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Hello all;
My question for the forum is, of the 3 variations of this carb series that was used on models of different displacement values is on the series that came on the 281xp (1988) that has the governed circuit(228A), should it have a main jet?The carb came in a box with the rest of the saw disassembled and when I pulled the small welch plug there was the small screen and below that nothing but a hole into the carb throat , the IPL's that I have access to dont show a jet for this model but it looks like there should be one, so I had an extra b or c series without the governor from a 288 and put it on and the saw and it is very rich when needles are set within the standard starting point of 1&1 and needles are wanting to be set less than 3/4 to 1/2 from seated so I think I am going to lower the metering lever and readjust but back to the a carb, where can I get a main jet for it and are there different sizes and if so which one would I need, Pics of the saw in before condition
Picture003.jpg

Picture002.jpg
 
Parts is parts

The main nozzle for the "C" variation is #363-629, and the part should still be be available
through VE Petersen right there in Ohio, Tel: 419-838-5911

What I'm not sure of is if you can simply insert the main jet into an earlier series A
carb without drilling and reaming the existing main body hole size to match the C.

Tillotson
 
Last edited:
Parts is parts

The main nozzle for the "C" variation is #363-629, and the part should still be be available
through VE Petersen right there in Ohio, Tel: 419-838-5911

What I'm not sure of is if you can simply insert the main jet into an earlier series A
carb without drilling and reaming the existing main body hole size to match the C.

Tillotson
So does the "C" version have a bigger main jet?
 
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