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Hey again all! I have 82 xs400 DOHC. I have realized the wiring is somewhat different than the diagrams i can find. The pickup coil on my bike only has two wires coming from it. All the diagrams I can find show a bigger pickup coil with 4 wires coming from it. On the two wire pickup coil which...

Hi all. Hope everyone is doing well. I am back to square one on my 82 xs400 dohc. Last week i thought i had this thing figured out. I switched the spark plug wires around and she ran like a scalded dog. Two days later she wont start. Backfire, backfire, nothing. So today i switched the plug...

Good morning all, spent last night looking over the wiring on my 82 xs400 DOHC and had a quick question. How many places does the wiring actually ground. I found the one beside the cdi box, and the one where the battery grounds to the crankcase. The ground wires from the cdi box and the...

Hi again everyone. Well, I was on the road for a whole day and now my 1982 xs400 DOHC wont start. Ran great yesterday. The left side wont spark. I have replaced the pick up coil, and the coils are good. My question is if the right side fires with good spark does that mean my pickup coil is...

Hi all, hope everyone is having a great weekend. I need to know what these relays do. When I do my seat they are going to get in the way. If i need to leave them I will redesign. If I can move them safely I will. Here is a photo, Let me know all your thoughts. Thanks

Hi again to all. I am asking for help on my rpm issues again. I have 1982 xs400 DOHC. The bike will run and idle now. Cleaned carbs 5 times trying to get it right. I am running pod filters so I put the new 140 main jets in it the other day. Prior to that it had a 125 and a 115 in it. When I rev...

Ok, here I go again. 82 xs400 DOHC. Have wired everything back in except that rear brake switch everyone helped me with(thanks for that.) I still get no spark on the left side. Coils are in spec, pick up coil in spec, getting power to coils, bypassed clutch switch, and still only one small spark...

I am still trying to figure out the electrical gremlins on my 82 xs400 dohc. Was tracking down where the pickup coil wires went when i found this. A black cap with two contacts in it just hanging below the battery where all the wires go down under the engine. It has two black wires going to it...

I have a 1982 DOHC xs400 maxim. Having starting issues now. Ok, got the carbs sorted. I put them back on, got the bike running, just was fine tuning the screws and then the next time i tried to start the bike wouldnt start. Turns over, got fuel, coils are within spec 3 and 8000+, but still no...

Newbie here, this is a great forum and I appreciate all the free advice. This is my second xs400, had one a while back and when i saw this one on craigslist I had to buy it. It is 1982 XS400K DOHC. Ok, got the carbs clean today. Bike now runs well up to about 5000 rpm and then starts popping a...

I just bought an xs400 and it has carb issues. It does run, but rough. Behind the idle screw, where the throttle cable attaches there is a flathead screw that looks like brass. What does this screw do? It appears to be all the way in but looks like it is an adjustment. I have looked at the other...