Tillotson HS125 Rebuild kit Confusion (RK-23HS)

[xl130]

I recently purchased a Tillotson carb rebuild kit from Amazon. It looks like there are two diaphragms(one black & one tan) and two carburetor gaskets.

The carb that I disassembled only had one black diaphragm and one thick carburetor to manifold gasket.

Are you supposed to stack the two gaskets when you reassemble or is the kit universal and suitable to several Tillotson Carburetors in which case you would only need to install one of the two gaskets and diaphragms?

Has anyone bought one of these rebuild kits and seen this before?

[edju1958]

Your latter assumption is correct,the kit is universal & is used on more than one model carb.If you put more gaskets and/or diaphragms in your carb than what the carb's IPL calls for you won't have very good results.Walbro does the same thing with it's carb kits.Also,you can't assume that what was in your saw's carb was correct unless it was a good running saw.I've had carbs where the previous owner put the wrong diaphragm in it & it wouldn't run.It's always a good idea to check the IPL to double check.

                                                              Ed

[fossil]

Nope. The tan one is a teflon diaphragm (I think) and will stand up better to gas than the black one. You can use either but not both. I always use the tan one if there's a choice but the black one (nitrile) works fine too.

All the HS kits I've bought contain both types.

[xl130]

[5terrysupersaws]

 Welcome to the House of Homelite. 

 That appears to be an aftermarket rebuild kit, typically the genuine Tillotson kits do not contain the 
tan pump diaphragm(Teflon...supposedly better for ethanol fuels) ... at least the ones I've used. 

 The 2 carburetor to manifold gaskets contained in the genuine kits have different bore diameters and 
are slightly thinner .. .770" x .029" -- .811" x .029" , than the factory gasket.
The original gasket #67631 has a slightly different shape and measures .745" x .035" .

 Does your XL-130 have an ID tag and what are the numbers ? 

[xl130]

[xl130]

Dec 18, 2019 21:40:23 GMT -5 xl130 said:

There are no tags or labels, and I'm not sure if its a XL130. I bought it from a person that told me its a XL130. I'm positive that the drive cover is not original. Someone has broken it so that the oil lines will pass through it.

[5terrysupersaws]

Dec 18, 2019 21:44:43 GMT -5 xl130 said:

Dec 18, 2019 21:40:23 GMT -5 xl130 said:

There are no tags or labels, and I'm not sure if its a XL130. I bought it from a person that told me its a XL130. I'm positive that the drive cover is not original. Someone has broken it so that the oil lines will pass through it.

  Appears to be an XL-130, based on what can be seen in the images posted ..estimate a 1973 model .

[bobxl76]

Dec 18, 2019 20:51:48 GMT -5 5terrysupersaws said:

 Welcome to the House of Homelite. 

 That appears to be an aftermarket rebuild kit, typically the genuine Tillotson kits do not contain the 
tan pump diaphragm(Teflon...supposedly better for ethanol fuels) ... at least the ones I've used. 

 The 2 carburetor to manifold gaskets contained in the genuine kits have different bore diameters and 
are slightly thinner .. .770" x .029" -- .811" x .029" , than the factory gasket.
The original gasket #67631 has a slightly different shape and measures .745" x .035" .

 Does your XL-130 have an ID tag and what are the numbers ? 

This is good to know,wonder how come they don't send a paper specifying this,i got the same kit for my xl 76 carb,which manifold gasket should a person be using or does it make a huge difference?....bob

[xl130]

I figured that some picture of the rebuild process may be a helpful to anyone else like me that has never done a carb rebuild before.


89211FC6-B1D2-4FCE-AAFE-64A2BA5FCB2D by XL 130 Homelite, on Flickr

2ED42432-DDDB-4AC2-ABA9-558712931F19 by XL 130 Homelite, on Flickr

3929C6C5-D024-4FB6-82AC-D60AA913FAAE by XL 130 Homelite, on Flickr

93F4F70D-914E-4935-A4F9-B0A972ADDAA3 by XL 130 Homelite, on Flickr

E22A4AFC-7138-4E58-A6BA-5463B3414272 by XL 130 Homelite, on Flickr

92581052-6815-43CB-B866-1D58E24EC8E8 by XL 130 Homelite, on Flickr

624AAAEC-1D74-404B-8DE4-A03FF17DC0FF by XL 130 Homelite, on Flickr

F65C2957-395A-4B17-970C-0A5DADDB5D69 by XL 130 Homelite, on Flickr

5BC98574-0231-49D7-968F-3E10F286E02C by XL 130 Homelite, on Flickr

21B09374-FA57-44E0-8979-FEF0AC4E79C3 by XL 130 Homelite, on Flickr

2F09F061-B89F-4965-A223-1F018B0046C2 by XL 130 Homelite, on Flickr

[fossil]

Dec 19, 2019 7:05:30 GMT -5 bobxl76 said:

Dec 18, 2019 20:51:48 GMT -5 5terrysupersaws said:

 Welcome to the House of Homelite. 

 That appears to be an aftermarket rebuild kit, typically the genuine Tillotson kits do not contain the 
tan pump diaphragm(Teflon...supposedly better for ethanol fuels) ... at least the ones I've used. 

 The 2 carburetor to manifold gaskets contained in the genuine kits have different bore diameters and 
are slightly thinner .. .770" x .029" -- .811" x .029" , than the factory gasket.
The original gasket #67631 has a slightly different shape and measures .745" x .035" .

 Does your XL-130 have an ID tag and what are the numbers ? 

This is good to know,wonder how come they don't send a paper specifying this,i got the same kit for my xl 76 carb,which manifold gasket should a person be using or does it make a huge difference?....bob

As long as the gasket isn't leaving any areas open to an air leak and the throttle bore isn't partly covered I don't think it will make a difference.

It's been a long time since I used an OEM Tillotson kit for anything except a few HL kits. I had forgotten Tillotson didn't include a teflon pump diaphragm.

I've been using Carbtech21 kits which are a lot more reasonable and have only had an issue with one HL kit that they replaced immediately.

I have bought a lot of kits from them and their service and kit quality is excellent.

Around me the repair shops seem to have one price for carb kits, $25.  Other stuff coming out of the US is usually a bad deal as well due to the ever climbing cost of cross border shipping.