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YICS Tool

Discussion in 'XJ Technical Chat' started by simarkhall, Apr 28, 2010.

  1. simarkhall

    simarkhall New Member

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    Anyone know where I can get hold of a YICS port blank tool? I found an old post as per below, with part numbers and prices, but no link to the shop in question.... Posters name was Chacal?

    c5) Yamaha YICS PORT CLEAN-OUT TOOL----the YICS chamber runs side-to-side in the back of the cylinder head, and is accessed via a 12mm bolt on either end (this is the same chamber that the HCP93 synch passage-block-off tool fits into). This chamber has four tiny passages in the top, one for each cylinder. These passages can accumulate soot and other material over time, effectively clogging or reducing their capability to pass the fuel-air mixture through them, and thus compromising their function. This YICS port probe & clean-out tool has a spear point that can punch through the toughest accumulation of carbon build-up, and has marked notches on the extension rod to indicate exactly how deep into the chamber the tool must be inserted to easily locate the passages. Convenient dowel handle allows for ease of use. A very handle tool to have around! For use on all XJ650 - XJ1100 YICS-equipped engines (not needed on XJ550 engines).

    HCP1282 YICS chamber Port Clean-Out Tool:
    $ 14.95


    vv7) Reproduction YICS PORT BLANKING TOOL---this is the tool you'll need to perform a proper carb synchronization on any YICS motor......without it, you're just wasting time. This block-off tool is used to isolate each cylinder from the others while performing a carb synch. Updated version of the factory #90890-04068-00 tool. Some people claim that this tool is NOT needed to perform a proper synch; we disagree, and so do the Yamaha engineers who designed the YICS system. Quality aluminum tool features a snap-open and shut trunnion handle design like the original. This is NOT a cheap home-made tool and has all the proper seals, dimensions, and high-temp insulators as an original factory tool. IN STOCK!

    HCP93 reproduction YICS Port Blanking Tool, each:
    $ 37.00



    HCP6380 Replacement insulator SEALS SET for the HCP93 tool,
    set of 3 seals.
    $ 4.95
     
  2. iwingameover

    iwingameover Active Member

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    Chacal (Len) send him a PM. That's out of his catalog. It's in the forums under supporting vendor.
     
  3. simarkhall

    simarkhall New Member

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    Will do. Many thanks.
     
  4. grmeyers

    grmeyers Member

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  5. simarkhall

    simarkhall New Member

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    Hi. Cheers for the Ebay pointer. Did actually buy one of these from Larry. I didn't get on very well with it, so I'm looking for alternatives. Thanks anyway.
     
  6. workingonit

    workingonit Member

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  7. gitbox

    gitbox Member

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    How does that tool on Ebay work? It looks nothing like my YICS tool.
     
  8. RiderXJ

    RiderXJ Member

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    First the YICS chamber must be clean of carbon build up and debris. The O-rings seal the ports that connect each carb to the YICS chamber. The tool slides in and the long screw (included) is removed so the plug can be reinstalled. It can be left in for long periods of time if the user wants, plugging the YICS and making it a NON YICS system. I bought one from Larry last year and still have it installed. My bike seems to run a bit better With it installed. There is NOT a big enough difference in mileage to even worry about.
     

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