mdsims Posted March 18, 2009 Share Posted March 18, 2009 Hey all, well as the title states I just picked up a 77 xs 400. I'm really digging the styling of this little machine. Here is a bad cell phone picture of the bike, I was surprised when I saw she had discs front and rear. the best part is I only paid $200 for it. Currently, I'm struggling to get it running. I've had it going a few times but it seemed to be lacking fuel and one cylinder was having trouble firing. So I pulled the carbs and noticed that one of the screw like pins was overtightened and the needle tip had broken off, jamming the hole shut. So now I'm looking for another set of carbs and I'll strip them all down and try to assemble a best parts set. I'll snag a rebuild kit somewhere along the way as well, I'd assume. I'm also trying to get a hold of the breather boxes, hose, and side panels. I've located all those parts but am still waiting on the seller. Also in order is a front caliper mount, new pads and new tires. What is this I've read about some of the xs400's being DOHC? I look forward to learning a lot more about this bike. Cheers, Matt Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 19, 2009 Moderator Share Posted March 19, 2009 Matt, good ride there ( yes I'm biased) DOHC is a later "euro styled" model from '81 and comes in two flavours 45 BHP or 34 bhp (usa market) this has nothing to do with your SOHC model so be careful. There are also custom, heritage models sharing the same engine but with a different frame and longer forks. Both my carbs had their pilot needles snapped off and I had someone push them through. rebuild kits from here Link to comment Share on other sites More sharing options...
mdsims Posted March 20, 2009 Author Share Posted March 20, 2009 Matt, good ride there ( yes I'm biased) DOHC is a later "euro styled" model from '81 and comes in two flavours 45 BHP or 34 bhp (usa market) this has nothing to do with your SOHC model so be careful. There are also custom, heritage models sharing the same engine but with a different frame and longer forks. Both my carbs had their pilot needles snapped off and I had someone push them through. rebuild kits from here Sweet. Thanks for the info. Question, did the needles being stuck in there mess up the holes and flow of fuel? I had planned to have to get one new carb but if all I need is a rebuild kit, I'd be stoked. Link to comment Share on other sites More sharing options...
Moderator Goff Posted March 20, 2009 Moderator Share Posted March 20, 2009 Welcome to the forum Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 20, 2009 Moderator Share Posted March 20, 2009 Sweet. Thanks for the info. Question, did the needles being stuck in there mess up the holes and flow of fuel? I had planned to have to get one new carb but if all I need is a rebuild kit, I'd be stoked. they did enlarge the hole a bit, but new needles will compensate and I've had no problems!! most carbs will be worn by now anyway, so get the kits Link to comment Share on other sites More sharing options...
mdsims Posted March 23, 2009 Author Share Posted March 23, 2009 they did enlarge the hole a bit, but new needles will compensate and I've had no problems!! most carbs will be worn by now anyway, so get the kits well after a 220 mile (355km) trip home and a quick visit to my dad's shop......all the stuck and stripped pieces have been removed from the carbs. Stripped pieces are thanks to a previous owner who decided to attack them with poor quality tools. Rebuild kits for the carbs have been ordered and I'm ordering new carb mounting boots, mini k&n air filters, and the stock side panels in the morning. Still looking for a front caliper mount and new brake pads if anyone has extras of either or a cheap source on the pads I'd appreciate it. Also, I pulled the pedals, pegs, and random other rusted parts that were easy to get to and sandblasted them. New paint should spruce them up a bit. I'll get better pictures once I get back home and get the old lady washed up and put back together. Should look mighty good. Link to comment Share on other sites More sharing options...
ajc99z Posted March 23, 2009 Share Posted March 23, 2009 You should be able to find pads on ebay, try this link: cgi.ebay.com/ebaymotors/Yamaha-XS650-xs-650-brake-pads-for-1977-84,-also-fits-a_W0QQitemZ300297848027QQcmdZViewItemQQimsxZ20090303?IMSfp=TL090303138010r13928 Link to comment Share on other sites More sharing options...
Cy Welch Posted March 25, 2009 Share Posted March 25, 2009 Still looking for a front caliper mount and new brake pads if anyone has extras of either or a cheap source on the pads I'd appreciate it. From what I have seen/heard all the XS models use the same calipers and pads. Link to comment Share on other sites More sharing options...
mdsims Posted March 26, 2009 Author Share Posted March 26, 2009 From what I have seen/heard all the XS models use the same calipers and pads. Thanks to everyone for the replies. Here is where the bike stands: Work I've done: removed ignition and had a key made. (previous owner lost the keys) washed the bike polished chrome with steel wool tore apart the cluster area for a good cleaning and wiring check stripped, soaked and cleaned the carbs with compressed air removed the seat and cover to make a pattern drained all brake fluid, flushed lines, replaced with new fluid. replaced misc dash lights sandblasted and painted pegs, pedals, misc stuff Parts on order: brake pads carb rebuild kits carb mounts mini k+n air filters (cheaper than stock) side panels Parts needed to be found: clutch handle with perch and adjuster screw front caliper mounting bracket rubberized canvas for a new seat If anyone has the parts I listed as needed, specifically the clutch perch and caliper mount let me know and maybe we can work something out. Pics to follow by this weekend. Link to comment Share on other sites More sharing options...
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