Honda XR650R Discussion
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Post  lancap on Thu Aug 27, 2020 12:08 am

Hi Burp,

Yes I can use epoxy on the 5mm screw, thanks.
As the carb is not mine, it is borrowed, and the owner said he was working well, just needed the rubbers, o-rings etc… ..  so I kept the configurations, and i did not use epoxy on the air cut valve hole, also.

My goal its with the spares I have try to fix my carb and swap it again, to see how it works…
Meanwhile, Probably I’ll buy this carb, (because this it working fine) than I’ll upgrade main jet to the 178.

Yes I did search around for the correct float-level setting,  service manual says  16.0mm I set it on 18.0mm, its ok, no leaks at all.After replace the mixture screw again, did set it 2.0 turns (old mixture screw had 2.0 turns), but i´ll do as you say, around 1.5 turns.

I am assuming that the problem was really the carb, otherwise no idea at all, where was the problem.

Promise, i´ll give you feedback, just need time also, at same time i am rebuilding my old nx650 dominator 1990..
Once again, thank you all

lancap
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Post  lancap on Sun Sep 13, 2020 9:50 pm

Gentleman,
Swap done from 175 to 178 (main jet)
Now i have:
Low jet 68S, 178 and 3rings from top.
idle mixture screw  +- 1.5 turns.
Front/Rear sprocket 14/40T
Tires Bridgestone 120/70/R17 & 140/70/R17
Really gooooooood.
Going to leave it this way.......

Next job..... Am buying more spares to rebuild my old carb, than Swap it again to see if works or not.. (want to be sure, what was the that stuck idle problem)
thank you all.
Regards
lancap
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XR650R Year : 2001

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Post  Mauser on Sun Sep 13, 2020 11:08 pm

As I said put it back to stock lol, no need to re-invent the wheel. Glad your sorted.

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Post  BuRP on Thu Sep 24, 2020 7:12 am

Ian,

if you will keep this bike for a planned long time then best to buy a few 'more' parts for the carb for the future, just in case.
Reason is this bike's getting old, carb ditto but the parts are still available now.... but that will change.
Having a few spares is better than looking for them, or having to make do with 2nd hand scrounged one's Cool
Enjoy this bike, it's a great one (... which Honda should have developed further etc etc but they did not Bump )
BuRP
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Post  lancap on Tue Oct 13, 2020 5:04 pm

..Yes in Europe its not easy to find spares for the BRP.
Am planning to keep both carbs... and want to try both, am just wait for a new slow jet 68S, lost it somewhere in my garage...... am mad!!!!! than will swap carbs again to see performance.
Regards
lancap
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Post  lancap on Wed Oct 14, 2020 11:19 pm

Gentleman,
Ordered a #68S (ebay) received a 68.
Honda dealer do not have code (Part Number) for 68S only 99105-MBN-0680 (#68)
A guy told me for the #68S, the PN its H099105-MBN-0680 (honda dealer do not have this PN).
I saw pictures and have in my first carb, a Keihin slow PILOT jet with the Keihin symbol stamped and 68S.
So, This exists as original Keihin? #68S
Does anyone of has a spare to sell?
thanksss
lancap
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Post  Mauser on Thu Oct 15, 2020 5:28 pm

Here what I purchased for my US restricted bike...

16211-MBN-640 CARB ISOLATOR £14.50
99101-357-1750 #175 MAIN JET £10
16012-MBN-641 MAIN NEEDLE £26.50
99105-MBN-0680 SLOW JET £11

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Post  lancap on Fri Oct 16, 2020 9:17 am

Mauser, thanks
I also bought the same items as you...
But,  do you to know....if that infamous slow Jet "68S"...its real, or someone fake it, and say original its Honda?
lancap
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Post  Mauser on Fri Oct 16, 2020 11:28 pm

lancap wrote:Mauser, thanks
I also bought the same items as you...
But,  do you to know....if that infamous slow Jet "68S"...its real, or someone fake it, and say original its Honda?
I orderd the parts from my local dealer....all genuine and 68S

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Post  lancap on Thu Oct 22, 2020 10:16 pm

Ok, thanks,
I already went to the Honda dealer (Portugal), they told me PN 99105-MBN-0680 stands for the regular 68.
as you may see by the picture.
But this time i ordered one, maybe i´ll get the S..
I have to wait and see..
lancap
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Post  lancap on Tue Oct 27, 2020 9:24 pm

Mauser, you´re right, i ordered the 99105-MBN-0680 SLOW JET, this PN stands for the regular 68, but received the 68S.

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Once again thankssss
lancap
lancap
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Post  Mauser on Tue Oct 27, 2020 11:20 pm

Glad you got the right 1.... Very Happy

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