HELP: Rebuilt turbo carbs and have an extra plastic washer

Hi,

I recently rebuilt my Seca Turbo carbs and have this extra plastic washer/spacer. I am going to guess it goes in somewhere between one of the throttle shafts, but where? Any ideas ? Thanks guys

 

yup, that's one of the throttle shaft washers that goes between the circlip and seal

 

or on the outside of any of the carbs between the seal and the linkage.

TWO of the possibilities (outside on 1 and 4) are an easy fix; the rest are either a pain (break the rack again) or a real pain (if butterfly removal necessary.)

 

True, I omitted that side of them. That would be a pain if it is from inside :?

 

JeffK might be able to provide further insight to narrow it down, he has a few turbos iirc.

 

Re: HELP: Rebuilt turbo carbs and have an extra plastic wash

Can't really narrow it down any further than that without looking for the carb it's missing from?

 

Mikuni carbs used the plastic shim washers only on the side of the shaft that does NOT have the return spring.

Here is the order in which the various bits-and-piece are arranged on the 650 Turbo carbs:


OEM Mikuni throttle SHAFT #1:

Outer
E-clip HCP6836
Plastic washer: HCP6837
Thin metal shim: HCP39B
Shaft v-seal: HCP6838B
Butterfly Valve on shaft: HCP14270
Butterfly Valve screws: HCP5898
Shaft v-seal: HCP6838B
Thin metal shim: HCP39B
Return spring: HCP13628
Throttle shaft bracket arm (swedged): HCP14266
Inner

XJ650 Turbo




OEM Mikuni throttle SHAFT #2:

Outer
Throttle shaft bracket arm (swedged): HCP14267
Thick metal spacer: HCP14273
Thin metal shim: HCP39B
Return spring: HCP13629
Shaft v-seal: HCP6838B
Butterfly Valve on shaft: HCP14321
Butterfly Valve screws: HCP5898
Shaft v-seal: HCP6838B
Thin metal shim: HCP39B
Plastic washer: HCP6837
Bracket arm (removable): HCP13679
Bendable washer: HCP13685
Nut: HCP13681
Inner

XJ650 Turbo




OEM Mikuni throttle SHAFT #3:

Outer
Throttle shaft bracket arm (swedged): HCP14268
Plastic washer: HCP6837
Thin metal shim: HCP39B
Shaft v-seal: HCP6838B
Butterfly Valve on shaft: HCP14270
Butterfly Valve screws: HCP5898
Shaft v-seal: HCP6838B
Thin metal shim: HCP39B
Plastic spacer: HCP14272
Bracket arm (removable): HCP14271
Lockwasher: HCP13682
Nut: HCP13681
Return spring: HCP13630
Inner

XJ650 Turbo





OEM Mikuni throttle SHAFT #4:

Outer
E-clip HCP6836
Plastic washer: HCP6837
Thin metal shim: HCP39B
Shaft v-seal: HCP6838B
Butterfly Valve on shaft: HCP14270
Butterfly Valve screws: HCP5898
Shaft v-seal: HCP6838B
Return spring: HCP13631
Thin metal shim: HCP39B
Throttle shaft bracket arm (swedged): HCP14269
Inner

XJ650 Turbo

 

Re: HELP: Rebuilt turbo carbs and have an extra plastic wash

Did you mean the NON-return spring side? that's what the specs say, in which case shouldn't be as bad of a mistake to fix.

 

Bloke, you are correct! I fixed the wording on my posting above. Thanks for the sharp eyes!

 

Re: HELP: Rebuilt turbo carbs and have an extra plastic wash

No worries, I'm thoroughly entrenched in carb-spec spotting mode at the moment having to search for HSC33's to fit my new XJ750E-II that nobody except you and Wolfie seem to have heard of! 8)

By the way, exactly how rare IS this model, do you know how many made/left etc please, I like my new toy, I like to be different, I like rarities. Even if parts can be a PITA :wink:

 

Re: HELP: Rebuilt turbo carbs and have an extra plastic wash

I should have clarified that its the thick plastic washer not the thin ones. Plus there is only one of them so I am going to say it goes on the 3rd carb.

Thanks again guys.