HITACHI - HSC32 CARB.

Hello, i thought perhaps someone in the chat might hep me solve a little problem. I currently have my Hitachi HSC. 32 carbs of and apart the thing is there is no mention anywere really about this what appears to be a brass washer just beyond the threads inside the pilot jet chamber. I tickled it a little to see if it would come out like a washer would. But it seems to be fixed. Apparently this brass looking washers function would be to slow down the jetting. Now 3 off my carbs have this part. One does not. As a result the one yhat does not hase a much bigger chamber area. What the heck is it and whats the function? Thanks fellows and ladies. I gotsta know.

 

is this the area you are speaking of you can see the brass insert that is in the tube it does not come out its function is to meter the fuel into the passage where it mixes with air.
the thread posted below explains each circuit in the carb.
if we are both talking about the brass insert and you are missing one you may need a new carb body


from this thread see the pics

http://www.xj4ever.com/inside your carbs.pdf

 

Not all of the inserts are brass.

 

would the non brass carb insert result in a bigger chamber as the fossilbike states?

 

no. I missed that part.
Also my comment was not specific to the HSC32, just that not all jet inserts are brass.

 

Some are white

 

Hello and thanks for responding. I saw those images you talked about. Is the pilot jet i unscrewed from the top of the tube independent of those brass jets underneath them? Or did they break off when i unscrewed them? And i cant explain for the life of me how one is missing. The one thats missing is just the inside part not the upper piece you unscrew. I should have said im talking about the PILOT FUEL JET. NOT THE AIR JET.

 

You didn't break anything off as long as you have the threads. The main jet screws into the emulsion tube.......the idle jet screws into the aluminum casting.

 

You wouldnt happen to know were i could get a photo of the pilot fuel jet. Taken of the carb body from the hitachi 32?

 

The jet itself?

 

Thank you. Any suggestions on how to replace the needle that goes inside under the pilot fuel jet. The one im missing?

 

I can't say that I have looked, but I don't believe they are available as an individual if you are looking at the part in xj550h's post.

 

The pilot jet has no needle under it (the pilot needle is up top near the enrichment plunger). I'm beginning to think that you are confusing the two jets. The pilot is further from the float needle and sits higher in he float bowl (shortest jet in the pic), and the main jet is closer to the float needle and sits lower in the float bowl (tallest jet in the pic)



If I'm wrong, and you really are missing the insert that sits under the pilot jet, you can't get them separately. It was pressed in during manufacture and not considered to be a replacement part. No spares were offered for sale by Hitachi.

 

Thanks for reply. Im in the right place. In other words yes im sure were the pilot fuel jet is. So this insert inside the chamber whats the function? And do you think it possible it fell down inside? I cant see it down there. But for sure its missing. Do you know what they look like?

 

If it's gone then it's gone (exceedingly unusual for that to occur). You'll need a whole carb body.

 

Thankyou

 

Like k-moe says, it is gone. It had to have been removed as it is, like, literally impossible for it to have fallen into the carb body. You mention earlier that it looked like a washer so,I don't mean to harp, but are we all talking about the same thing? Is it possible for you to provide a picture?

 

I will try. Can you tell me how to upload to this forum? Never have

 

You will need to link he photo from a hosting site like Shutterfly or Photobucket. Copy the URL for the photo, click the picure icon on the posting tools (looks like mountains and the sun), paste the URL and click insert.

 

Couldnt get it to work. I took a good image. Is thre another way i can get the image to you?

 

@fossilbike Paste the URL into this thread and I'll see if I can get it to show the photo.

 

Sorry man i just cant get it to work. Truth is ive never sent a photo . I dont understand copy paste url. Etc. Wish i new another way.

 

You have to upload it to a hosting/sharing site. Go to photobucket.com and open an account (free). They have a tutorial about how to use the service. Alternatively you can e-mail the image to me and I'll post it. You'll need to clear your inbox so I can get my e-mail address to you.

 

Tried downloading photobucket first time ever i couldnt get an app from store. I sent an email already with photo. Dont know if it went. And i swear to god ive been searching for the last 30 min to empty my inbox here and i cant find anything anywere on this site that will delete them. My god why. Thank you for your patients

 

My email is [mod edit] got it. Message incoming.

 

To clear your inbox you do the following:

Each converstion has a tickbox next to the title. Click it and a window pops up. Select the "Leave conversation" button to delete the conversation from your inbox.

 

Here is the photo from fossilbike


The pressed-in insert is there, but I think I see that the threads for the jet are missing.
What say you all?

 

Ok, threads are there. Just the photo. So thats what it looks like. 3 of my carbs have that one does not. Just imagine that brass looking washer is not there. Or i can send the pic without it.

 

@fossilbike Send me the pic.

 

Did you get it

 

As I suspected. You need a replacement carb body.



This, for me, is an entirely new sort of FUBAR.

 

Someone tried to drill out the idle circuit?!?

 

over zealous cleaning , one for the PO books

 

Could be that the jet was stuck, someone drilled to use an extractor, and pulled the insert out in the process.

 

Either way that is a crappy thing to foist off on someone, whether the carbs were purchased separately or with the bike.