Great tip , on my xv1100 I needed to apply a very thin smear of petroleum grease into the groove to keep it there when the slide moved down, nevertheless it works fine 🙂

 

By petroleum grease I guess you meant the normal lubricating grease? I use lithium grease on carburettor gaskets to help with compartments to seat better without leakage as old carburettors are prone to warp over time.

 

Space hopper, Virago-rider,

Guys,
If you follow the video on how he did it. There is no need for grease or whatever!

He didn't use any.

You're making it more complicated than it is.

 

Agreed, 100%. I've never used grease on carburetor internals. I did use lithium grease(very thin layer of it) on new gaskets with old, worn out carburetors with the idea of helping the two(or more) compartments seat better.

 

Joe,On my previous xv750 with Hitachi carbs this method in the video worked, however on my xv1100 with Mikuni carbs when I inverted the diaphragm it fitted into the groove perfectly but when the cap was applied (holding the slide up as far as possible) it depressed the diaphragm enough for it to pop out, I tried several times without vaseline before using it then it worked first time.I can only comment about my experience, it may work for others

 

All good. We all improvise our own methods. If it works, then that's what matters.

 

The video did not really show any ingenious ways to reassemble the top, just a standard procedure.
If the diaphragm distorts and doesn't seat well as you're pushing the slide in, simply don't push it all the way in. Install the slide and push it in just enough for the diaphragm to be in its best shape in the groove first.
Then, of course, when you insert the spring and put the lid on it, the slide will be forced lower into the bore, distorting the material again. You can prevent that by inserting a corner of a (clean) rag or maybe wadded up paper towel into the carb mouth under the slide. Put the lid on carefully, replace and tighten the screws and remove the block from the carb mouth. Of course don't forget to check for smooth travel and return back down.
Just my $0.03. (gotta adjust for inflation!)