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06-25-2021 #1
1978 Yamaha XS400 Chop replacement thread.
Im starting this thread to replace my other. if they ever get the missing threads back this one can be deleted or I may just use this one now. Heres my 78 Yamaha XS400. It's got around 2K miles and hasnt been on the road in about 40 years, hopefully I can change that.
I polished the carbs with Brasso then the carb bowls and top caps with 220 grit sandpaper up to 1200 grit, and polished them with Brasso. I then cleaned the carbs inside and out and changed the jets and lots of the internals. I also added some pod filters but I may change them
I got the bike running tonight I just used the stock jet sizes and settings for the stock airbox. It would idle decently but if I gave it gas, once it got past 2k rpms it would stall and die.
I'm gonna mess with it some tomorrow and see if i can get it to actually rev up and run steady. Then after I get my garage organized a little better and my tig setup for my welder I'll start tearing it down.
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