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Ebay Carb. Diaphragm Replacement!


skydoc_17

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Not being the kinda' guy that likes to do things the easy way,But always looking to save a few bucks I purchased a set of Carb. Diaphragms off of Ebay a while back. ($86.00 with shipping) I thought I would give you a run down on how that went.

After removing the False Tank cover and both side covers as well as the lower fairing legs on both sides I was able to get to all 4 Carbs. easily. To remove the Carb. covers I used 3 tools, a 1/4 inch drive ratchet with a special Torx bit on it for the 4 odd screws, an impact driver with a Phillips bit in it and finally a pair of Vise Grips for 2 of those Phillips head screws that just wouldn't come out. I took out the Torx head screws first on all 4 carbs. because when you remove the last Phillips head screw, you better have your catcher's mit on, that Carb. cover is coming off...FAST! I had set up 4 shop towels on my bench and kept all of the Carb. parts separated. I held each slider assembly up to a good light to inspect them and sure enough all 4 diaphragms had holes in them. I removed the old Carb. diaphragms by gripping the slider and "rolling" the old diaphragm out from between the two flanges on the slider. Two of the old diaphragms came off in pretty bad shape. I then cleaned all of the reusable parts with Carb. cleaner , but I must say that overall everything looked pretty clean. All 4 of the sliders were nice and smooth as were the Carb. bodies on the engine. I used a clean cloth and Carb. cleaner to clean out the Carb. body bores. (I don't use paper towels for this as I would not want a shard of paper ending up in the intake or the Carb. body) With everything clean I moved on to the reassembly. The Ebay diaphragms were not made of the same material as the stock Yamaha ones, but were very pliable, and had the tab for alignment in the Carb. body. After lubing the diaphragm with aerosol spray silicone I inserted the slider into the bore of the diaphragm. When I got to the flange, I stretched the diaphragm bore over the bottom flange. Now the spacing on the two flanges of the slider seemed a bit "slim" and I panicked for a moment but realized that by using my thumb nail I could wedge the diaphragm bore between the two flanges with no problem. When all was said and done you couldn't tell that the diaphragms and the sliders were not mated at the factory. I had the slider needles out for another project I will discuss later and at this point I reinstalled them. I put the slider assemblies back in the Carb. bodies aligning the tabs, put the caps on with the Stainless Steel Allen Head Cap Screw set I have listed in the classifieds and reinstalled all of the body parts and that as they say was that! Oh yea, I accidentally spilled some paint on the Carb. caps...Oops! I have attached some pics below and am willing to chat with anyone that is interested in this rebuild. Feel free to PM me. Sorry this got a bit "windy"

Earl

 

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Edited by Freebird
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