Recent content by thecurryman

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    77 xs400 starting problems

    Limped it into work but didn't have much time to tinker with it. Really is a struggle to get this bike to 35mph lol. Went ahead and checked sync and that was acceptable, fiddled a little with mix screws to make sure the circuits were clean and they had an affect. Readjusted idle and gave it a...
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    77 xs400 starting problems

    Yeah you aren't wrong tstidham it is a lost art. I had a similar experience as child rebuilding carbs for my dad on an 80s suburban lol. I'll check tonight to see if there are grooves on the needle but if I recall correctly there aren't. I guess I've stepped into the world of tweaking and...
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    77 xs400 starting problems

    Cap you were right again. I started heading back to the original configuration and kept getting warmer, sprinkled a little bit of tstidham's carb tuning knowledge into it and ended up with a bike that runs alright with h pipe and pods. Tried with and without covers, makes no difference. No...
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    77 xs400 starting problems

    Alright I'll give it a closer look this afternoon. When I rebuilt the carbs I replaced butterfly shaft seals while I had them off, diaphragms looked good too. The carb holders are new but could still be leaking so I will look into that as well. Im digging your suggestion though because I had the...
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    77 xs400 starting problems

    Had some time today to get a little work done on the bike so here's an update for yall. Carbs bench synced with feeler gauge so should be close enough to give me a steady idle, freshly charged battery and got that voltage regulator replaced with a used one of questionable quality. Carbs...
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    77 xs400 starting problems

    Thanks capt I will keep that in mind moving forward. Been kind of all over the place sourcing quality parts
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    77 xs400 starting problems

    Yeah that looks like the one I've got. Unfortunately I went through a local yamaha dealer and paid through the nose for two of them. Seemed to me that it would be the only way I could ensure that it was the right fit. Never used part zilla before are they pretty reputable as far as getting oem...
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    77 xs400 starting problems

    I thought that was your write up tstidham. Here's the one I got off a seller on ebay. Claims it worked when taken off the bike but we will see. Cost 15 bucks so if it doesn't it isn't a total loss. If it ends up being busted I will go ahead and get the transpo. Wasnt able to put it all together...
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    77 xs400 starting problems

    Alright gentlemen yall deserve an update so here it is. Rode it to work a couple days in a row to see what else would shake out and some things immediately jumped out to say hello. Hanging throttle at 3k rpm. Figured it was a lean condition due to vacuum leak so looked at the usual suspects...
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    Reg/rec thoughts

    Oh also, anybody got an old tachometer cable laying around they'd be willing to part with? Mikesxs carries them but they are 25 bucks and thecurryman demands bargains lol
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    Reg/rec thoughts

    Hey yall first post in the lounge so go easy on me lol. I wanted to start this conversation because I've seen many posts about charging system problems and since its beginning to look like ive got some myself I'd like to start by asking, has anyone tried the reg/rec combo units from mikesxs.com...
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    77 xs400 starting problems

    Done done and done. Runs like a top now, kicks over real easy and the electric start turns over immediately. Thanks to everyone who gave me pointers and advice. Im gonna ride this thing in its current configuration for a while and see what speaks to me. I do wanna upgrade the headlight now...
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    77 xs400 starting problems

    oh I wanted to ask about the tachometer as well. The old valve cover that I inherited has the tach cable stilll attached while the one on the bike isnt there at all. I looked at seeing if there was a way to reuse the old one but it seems like the two are mated and it would involve some work to...
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    77 xs400 starting problems

    okay I will knock this out tomorrow afternoon. Question though, when I got the bike I went ahead and checked all the timing related things Including the points, and they checked out with some feeler gauges, clearances were acceptable. Given what you just said, there is a way to advance and...
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    77 xs400 starting problems

    Alright capt chrome, did as you suggested with the mixture screws. Fired up and ran without choke, adjusted idle by screwing the idle screw all the way in and backed off like a turn. Bike cranks and idles alright but it's not a nice smooth sound. It skips and hops as though it's gonna miss an...
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