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I have a 1980 XS400 G to sell. Its all there and has a clean NY title. It runs but needs some fine tuning in the carb dept. Trans,brakes and charging system all good. To many projects in front of me and its gottsta go. $450.00 . Warrensburg NY E-mail me at rphub@localnet.com ( no tire kickers )

As can see here that I am responding to my own question with another question. How is it possible that no one had responded to this? Surely someone has had the same thought before. I have seen it done on a 550 honda .

Last night i took the carbs off again and seperated them and replaced the seals on the inner side of the card throttle shafts which i knew from a test were sucking air. No change . If anything worse. I have done it all. New diaphrams, pilot jets, set the floats in every position possible...

after putting on a spray tube so i could be more precise with the starting fluid in checking for leaks, i found leaks on the throttle shafts on the outside of both carbs. Now there little seals in there behind the clips and fiber washers. Both were pretty well dried up. I just happened to have...

Chris i see you are here in upstate NY, I am just outside Warensburg and if I decide to let this thing go, you will be the first to know. Anywho, I just went through the valves last week so they are right. This is maddening. I have a website somwhere that sells elect ign units for every type of...

Just a thought here on reg/rectifiers. There is a company called Oregon Motorcycle parts that sells brand new and very much improved units. He even guarantees them. There is a web site .

Today i just reset the floats to 26mm and its still the same . It will hang up at 4 grand and until the throttle is bliped it wont move down and then only very slowly. It is for some reason spitting back through the right carb intermittingly. I still think its that GD TCI unit which of course is...

As I rethink all of my attempts at solving the above problems, one thing finally hit me, the last time I set the float level I set t at 22mm which I know is extremely high. However it hadsnever flooded since but is it possible that having too much fuel in the bowls would cause a erratic and fast...

Back in the late 70s HD converted to elect ign. 1979 i believe. At that time all the old school die hards were cenverting them back to points ign using the argument that if it died on the road you could easly get er going. All they did was change the elect assenbly with a breaker plate unit and...

Just what "O RINGS" are you refering to? The ones beneath the pilot jet screws?. If so I have already done so albeit with some generic ones from an O ring assortment kit which i fitted to work. Maybe they arent exactly right. Anyway where are the exaxct ones available from?

I think there is a site ( mikes xs400 ) or something very similar that lists all sorts of the jets. Someone her surely knows of it. Its where i got mine and they were like $6.50 a set . Check the XS650.com site also .

Hey there J, so sorry for not responding earlier but between all the things summer has tp offer and the fact that I have all but given up on this thing have made me lose interest. However in answer ot your question, its a 80 G, special . I have tried everything and am still at square 1. I am...

I did reconnect the petcock to the vacuum port and found a slight air leak afterward which i sealed w/clamp. Only marginal inprovement . Heres another question, if the little O rings beneath the washers on the idle mix screws are bad, would placing a finger over the screw hole while running show...

Once again i am mulling over the past trial and error steps and i just came into the house and another possibility hit me. I have the vacuum hose that runs to the fuel petcock disconnected and plugged thinking more vac for the engine. I have been running with the fuel lever in the prime...

Trial and error indeed. I been trying and making a lot of errors. I have replaced the carb mounts a year or so back and have used propane and starting fluid to detect a leak w/o results . I have an old style set of mercury filler carb sticks and gone that route too. Tomorrow am i am going to...

After letting off the gas , it takes as long as 20 seconds to settle down. I have had these carbs off and cleaned throughly many times and replaced the pilot jets and diaphrams and also made sure the slides are nice and clean and close freely when on the bench. I am starting to think there is...

Adjust the idle with the idle air screw or just the large idle screw on the bottom?

Checked the comp and it was 120-125 and i know its not in the upper numbers listed in my manual, its at least within 5lbs of one another. I finally got the ign cover off and i can tell its never been touched . When the temp dips down a little i will hook up a light and see for sure. I just hate...

I havent checked the comp in yrs but will do so today. As for the timing advance, is it possible with this cdi system?. I remember when HD went to elect. ign inthe late 70s. Many guys pulled them out and replaced them with the old points setup. I doubt its even possible with this system. MY 77...

Today i pulled the carbs for like the 6th time .Made absolutely positively cartain all passages were clear. Replaced them started it up and once it runs like a scalded cat down the road UNTIL it heats up and you try to get to idle . It gradually slows down and quits. I even rechecked and reset...