Jenya, since my last post here I removed the carbs on a 700S Nighthawk. The same one I already removed the carbs and cleaned. Number 3 cylinder wouldn’t fire so I removed the carbs again, blew out the slow speed jet with compressed air and reinstalled the carbs. The bike runs fine now. Point is I was able to remove the carbs, clean the one carb jets, check the float level in that carb, reinstall the carbs and synchronize them, all in about an hour and a half.
On Thu, Jan 10, 2019 at 2:24 PM Graham Rogers <grahamjoanrog...@gmail.com> wrote: > Of course this all assumes you have removed the tank and seat. > > On Thu, Jan 10, 2019 at 2:23 PM Graham Rogers <grahamjoanrog...@gmail.com> > wrote: > >> Its not hard to do, you just have to persist. I forgot to mention, before >> touching the carbs you have to move the airbox back as far as possible. >> That means removing the two 10mm bolts holding the air breather cover in >> place. Maybe also removing the bolts holding the battery cover on since the >> bottom one anchors the battery box to the frame. I also push the plastic >> inner rear fender back against the rear tire. There is a snap in place part >> of that fender you can squeeze off the tube frame and so letting the inner >> fender go back. Remember this is the inner fender, not the main rear >> fender. I also undo the two bolts holding the regulator in place as this >> prevents the air box from moving back. The regulator is attached to the >> airbox. I just undo the bolts and let the regulator and bolts hang there. >> Then I go to work removing the cables, undoing the boot bolts and take to >> the carbs with a 1x2 to lever them out of the boots. >> >> On Thu, Jan 10, 2019 at 2:01 PM Jenya Spektor <skaspek...@gmail.com> >> wrote: >> >>> Graham, doesn’t sound very reassuring but I have to do it all the same. >>> Will post if any questions arise. Thanks again. >>> >>> Sent from my iPhone >>> >>> On Jan 10, 2019, at 1:58 PM, Graham Rogers <grahamjoanrog...@gmail.com> >>> wrote: >>> >>> Here’s what I do Jenya. Yours is a CB650SC Nighthawk right or a 700S, >>> same process. Once you get the carbs out and the throttle cables and choke >>> cable detached, go out and celebrate. That and reinstalling is the hardest >>> part. I then remove the float bowls, fill them with carb cleaner and let >>> them sit in Luigi’s Italian ice cups (mango flavor). Then I remove the >>> jets, ( the main and low speed jets). I drop them into another small >>> container of carb cleaner and let them sit. Then I spray out the carb body >>> with carb cleaner spray. Then I turn the carbs upside down (actually - the >>> right way up) and remove the diaphragm covers, remove the diaphragm slides, >>> springs and clean them all, checking for holes or tears in the diaphragms. >>> Again, I spray out the carb body and use compressed air through all the >>> passages. Sometimes, when I remember, I remove and clean the mixture >>> screws. If the carbs are really dirty and the jets gummed up I’ll let them >>> soak overnight. Next day, spray carb cleaner through the jets and >>> reassemble. >>> Before reinstalling the carbs, check the carb boot bolts to make sure >>> they are tight. Reinstalling the carbs, getting the cables back in place >>> may take longer than cleaning the carbs themselves. >>> This morning I did all that on a Nighthawk 700S. Got everything back >>> together and it’s only running on 3 out of 4 cylinders. I may have to start >>> over, Graham >>> >>> On Thu, Jan 10, 2019 at 1:30 PM Jenya Spektor <skaspek...@gmail.com> >>> wrote: >>> >>>> Hi all - coming back to this thread. So I am about the get the carbs >>>> out and start the break down process. >>>> Few helpful hints for me if you please: >>>> 1. What is the best cleaner for the carb parts that works well and is >>>> safe for the 36 yo carbs. >>>> 2. Once I clean and put it all together, is there a way or a kind of >>>> liquid that I can fill the carbs with to check for leaks? >>>> Thank you in advance, Jenya >>>> >>>> On Tue, Dec 18, 2018 at 7:14 PM EGrider <gevan...@gmail.com> wrote: >>>> >>>>> I've cleaned carbs a lot of times but only broken the rack once to >>>>> replace the o-rings in the fuel tubes. I used the o-rings from the >>>>> millimeter set of nitrile o-rings at Harbor Freight. The tiniest ones also >>>>> work well on the mixture screws in the carbs. I fixed the carbs and had >>>>> 100 o-rings left for $5 or so. Such a deal. >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to nighthawk_lovers+unsubscr...@googlegroups.com. >>>>> To post to this group, send email to nighthawk_lovers@googlegroups.com >>>>> . >>>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> >>>>> >>>> >>>> -- >>>> Jenya Spektor >>>> 917.202.3080 >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to nighthawk_lovers+unsubscr...@googlegroups.com. >>>> To post to this group, send email to nighthawk_lovers@googlegroups.com. >>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to nighthawk_lovers+unsubscr...@googlegroups.com. >>> To post to this group, send email to nighthawk_lovers@googlegroups.com. >>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to nighthawk_lovers+unsubscr...@googlegroups.com. >>> To post to this group, send email to nighthawk_lovers@googlegroups.com. >>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. 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