Looking for 79 Carb diaphragm

[Cosmo]

Pulled a carb apart yesterday and found a cracked diaphragm. OEM 14940-00 for a 79 xs1100. I would settle for a used one if anyone can help with a source...Thanks, Cos

[TopCatGr58]

Hey Cosmo,

The complete diaphragm/vacuum slide assembly is still available from Yamaha, but rather pricey, over $100 for ONE!!

There are ways to repair it. I can't remember if we have a specific tech tip about it, but there are plenty of threads here, a simple search for "repair diaphragm" will reveal the different ways!

I'm going to copy this thread into the Parts Wanted FORUM so you might get a better reply/offer of parts!

The replacement diaphragms you'll find at partsnmore and MikesXS are for the later 80-81 carbs with larger diameter vacuum slides, so they are not a bolt on choice. There was a recent thread about fitting the ones being sold on Ebay from the UK, and how to fit them onto the slides, still not an easy mod!
T.C.

[thumperjsa]

Doesn't Partsandmore.com still carry these?
CARB SLIDE DIAPHRAGMS
Fits XS1100G/H/LG/LH/SG/SH (81-82) Made in Japan
$64.00US EA.

Part#20-6028

partsandmore

[DiverRay]

The '78 and '79 carbs use a different diaphragm than the later model carbs.
Cosmo, I DO have some 78' carbs, and I can check for good diaphragms. Let me know via PM if you still need one, and I'll take a look. I will be boxing everything up soon, as I have to move. It will then be in a "storage" area, and will be harder for me to find things.