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Just a quick followup. I got my parts in, thanks Mike's XS, and installed them today. The bike is running and idling now just great. Not sure what one thing fixed it, but here is what I did to the carbs: 1. Replaced the fuel / air screws. The rubber gasket was missing on one of the carbs...

I will have to wait until the weekend before I can get the carbs off. I will readjust the float height and clean everything again. It was idling better at one time, so who knows. Just to be on the safe side I will order those little rubber plugs, new pilot screws, and the jets that have been...

They are brass floats.

I need some help with my carbs on the 1980 xs400. I have cleaned the carbs several times including boiling in lemon juice. They are quite clean, and they smell lemony fresh too. The rubber diaphragms do not appear to have any holes. The inlet rubbers from the carbs to the engine are good...

1980 xs 400. I got this for my wife to learn to ride on. It was the cheapest bike with a fairly low seat that we could find that ran. Spent a lot of time an money on it over the winter. Looks good, but still needs some work to make it run better. Everything seems to work including the...

Thanks for confirming this. This is my first bike rebuild. The bike was rusty junk and had a salvage title when I got it. It has been stripped down to the frame and I am now in the process of putting it back together. I will post pictures of the build when I get it done. I made a few...

I popped off the right hand side cover and took the E clip off from the left hand side. I can push the gearchange shaft (the name used in the Haynes manual) in and position it over the gear selector arm roller and then shifting is working again. Looking at the pictures in the manual it appears...

I have been putting back together my 1980 XS400 after taking it down to the frame to clean it up and rebuild it. The bike has been coming along fine until today when I got real stupid and used a rubber mallet to tap on the gear shift level. This caused the shifting shaft to move in about 1/4...

Thanks for the diagram. I see that the seat is missing parts 9 and 10. Anyone have any of those parts they want to sell? I want to get the seat locked down before working on the seat. I was going to cut the seat down to make it flat and then have it recovered. I found a site that actually...

How does the locking mechanism work? I have a 1980 model that has the latches in place on the frame. On the seat are two prongs that slide into the latches on the frame, but they do not catch, or lock. It seems that there should be some sort of hook or latch on one of the prongs to lock the...