Slow Loris Posted September 14, 2023 Report Share Posted September 14, 2023 I’ve got the DAF(?) manual choke hitachi carb on my 521. I believe it’s missing the secondary slow jet. Should be a one-piece. I could also be wrong. Anyone ever sourced replacement jets for these carbs or have specs on them? I can only find service manual jet specs for newer hitachis. Anyone have a hitachi in their burn barrel and they are willing to part with this jet? I think it’s #91 here: and goes here: Yes I could buy the Weber, but it looks like the going rate for jets is $3 so…thought I’d try this first. Sorry, I double dipped on this topic. Just wait I’ll post a want ad too. 1 Quote Link to comment
Stoffregen Motorsports Posted September 15, 2023 Report Share Posted September 15, 2023 Burn barrel is full of plastic and waste oil. Sorry. Quote Link to comment
Crashtd420 Posted September 15, 2023 Report Share Posted September 15, 2023 (edited) 17 hours ago, Slow Loris said: I’ve got the DAF(?) manual choke hitachi carb on my 521. I believe it’s missing the secondary slow jet. Should be a one-piece. I could also be wrong. Anyone ever sourced replacement jets for these carbs or have specs on them? I can only find service manual jet specs for newer hitachis. Anyone have a hitachi in their burn barrel and they are willing to part with this jet? I think it’s #91 here: and goes here: Yes I could buy the Weber, but it looks like the going rate for jets is $3 so…thought I’d try this first. Sorry, I double dipped on this topic. Just wait I’ll post a want ad too. I dont think that's the slow jet spot.... It wouldn't be exposed to the outside of the carburetor.... My guess is that needs a plug.... Its possible that's an inspection hole for the throttle blade.... I'm not sure if the Hitachi has that or not... I know weber's have something like that..... or even just a hole for manufacturing that needs to be plugged.... Edited September 15, 2023 by Crashtd420 Quote Link to comment
Crashtd420 Posted September 15, 2023 Report Share Posted September 15, 2023 This is a picture from the front of that same hole.... slightly different carb but same main body..... I'm 99% sure you just need to cap that hole .... no idea the thread size or type.... Quote Link to comment
Slow Loris Posted September 15, 2023 Author Report Share Posted September 15, 2023 Okay cool I’ll try plugging it. I have exactly zero experience looking at carburetors so couldn’t tell what I was seeing. I can see down that opening there is a tiny little hole off to the left of the orifice at the bottom of the opening. Looks like there is fuel shining down under that orifice. Also it’s like a very nice conical concave fitting down there, kinda looked like it would complement the other end of some jets I was seeing pictures of… Anyway I’ll try that and see what happens. Thanks! Quote Link to comment
Slow Loris Posted October 15, 2023 Author Report Share Posted October 15, 2023 Alright found a plug and nothing has exploded so calling that a success! 1 Quote Link to comment
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