Carb Work

[Paul II]

I am working on a 1970 xs1 650's carbs, and I've run into a little problem. I can find the kits for em, but none have the diaphragm I need. Anyone know where to find that? I looked on partzilla, and they are "unavailable". Part number is 256-14916-19-00. Any help would be greatly appreciated.

 

[grizld1]

JBM Industries is the go-to source for replacement diaphragms: www.jbmindustries.com. For more carburetor information and links, click the Tech button at the top of the page.

 

[bosco659]

X2 for JBM, great service and quality diaphragms.

 

[5twins]

Be aware that rebuild kits often contain the wrong size jets and/or a generic needle that doesn't match. For jets, genuine replacements from Mikuni are best and for the needle, just re-use the original if possible. Honestly, rebuild kits aren't recommended because they so often contain the wrong parts.

 

[Paul II]

Thanks for the information guys. My carb will need new gaskets for sure, but I can use a lot of what came with it. Another quick question, y'all know where to get paint work to match the original? The guy I bought it from spray painted it red years ago, and I couldn't get it off without taking all the paint off.

 

[jetmechmarty]

y'all know where to get paint work to match the original?

Yeah! Don't send it to Marbles Motors!
https://www.xs650.com/threads/marbl...er-then-screwed-up-the-warranty-repair.58302/

 

[Mailman]

My carb will need new gaskets for sure, but I can use a lot of what came with it.

The 50 year old jets can and do wear out, look at this photo by @TwoManyXS1Bs showing the wear on his pilot jets compared to a new one.

I found similar wear on my XS2 when I rebuilt the carbs on it. I also found mis matched jets that had been installed over the years and an incorrect choke plunger installed. A lot of careless work done over the years that had to be corrected.
And yeah…..avoid Marbles Motors regarding paint jobs.