Differences

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--- techtalk:evo:carb02 [2019/08/22 19:23]
hippysmack [Before Tuning - Collect Your Information]
+++ techtalk:evo:carb02 [2019/09/01 16:12]
ixl2relax [Accelerator Pump and Fuel Float Bowl]
@@ Line 308: / Line 308: @@
 {{ :techtalk:evo:carb:cv40-imscap-drillbit.jpg?200|}}
-**IMS Cap** - From the factory, the cavity for the Idle Mixture Screw (IMS) is covered with a small cap. (Note from the service manual: Adjusting mixture setting by procedures other than those specified in the manual may be in violation of local regulations.) The following procedures are not specified in the manual. To remove the cap and gain access to the IMS, use a small drill bit to create a hole in the cap. Use several layers of tape on the drill bit to limit the depth the bit can penetrate the cap. If you pop thru the cap too deep with the bit, you may damage the internal screw head - Be Careful. Once your cap has a hole in it, CAREFULLY thread a self-tapping screw (blunt nose) into the hole JUST ENOUGH to capture the cap & pull it out of the IMS cavity.
+**IMS Cap** - From the factory, the cavity for the Idle Mixture Screw (IMS) is covered with a small cap. (Note from the service manual: Adjusting mixture setting by procedures other than those specified in the manual may be in violation of local regulations.) The following procedures are not specified in the manual. To remove the cap and gain access to the IMS, use a small drill bit to create a hole in the cap. Use several layers of tape on the drill bit to limit the depth the bit can penetrate the cap. If you pop thru the cap too deep with the bit, you may damage the internal screw head - Be Careful. Once your cap has a hole in it, CAREFULLY thread a self-tapping screw (blunt nose) into the hole JUST ENOUGH to capture the cap & pull it out of the IMS cavity. ((photo by cantolina of the XLFORUM http://xlforum.net/forums/showthread.php?t=14949))
 {{:techtalk:evo:carb:cv40-idletransferports.jpg|}}     {{:techtalk:evo:carb:cv40-idletransfer-diagram.jpg|}}
@@ Line 456: / Line 456: @@
 ((http://xlforum.net/forums/showthread.php?postid=5342857#post5342857))
-\\
-===== Simply Rebuilding / Refreshing The CV Carb =====
-\\
-==== Disassembly ====
-  *
-  *
-==== Cleaning & Inspecting ====
-  * Make sure to take everything apart, jets, needle, accel pump, all rubber components especially.
-  * Examine all parts for excessive wear, damage, distortion, etc.
-  * Cleaning solutions/sprays vary based upon your location, needs, budget, preferences and quality. Here are some ideas:
-     * An overnight soak in a solution of Pinesol and water followed up with a good brush down with a toothbrush then rinse and air dry. ((http://www.hotrodders.com/forum/pinesol-really-does-clean-carburetors-amazingly-pics-inside-248810.html))
-     * A 20 minute soak in a gallon of Gunk (or other) Carburetor Cleaner that has a basket inside for small parts and lowers in the can with a handle, rinse, air dry, use.
-     * An aerosol spray carb cleaner will also work but may not loosen all of the build up in the jets or orifices in the carb body if they're not directly sprayed through.
-  * Blow out all holes, jets and orifices thoroughly with forced air after cleaning.
-==== Replacement Parts ====
-You can purchase individual parts or a rebuild kit. The kits will not have needles, jets or the spring, washer & o-ring for the Idle Mixture Screw.
-The rebuild kits are usually less than $20 and include:
-  * Carb-to-Manifold Seal
-  * Carb-to-Air Cleaner Gasket
-  * Float Bowl Gasket/O-ring
-  * New Float Needle
-  * New Accelerator Pump Diaphragm & Spring
-  * Some Misc Parts/Seals
-==== Assembly ====
-  * Do not lubricate the enrichment cable (misnamed Choke) on CV Carburetors - tension is needed. ((1998 FSM Pg 1-1))
-  *
-\\
-Add'l Info & Pics - \\
-Accelerator Nozzle, Check Valve, Float Seat - http://xlforum.net/forums/showthread.php?t=1624208\\
-Accelerator Nozzle & Check Valve - http://xlforum.net/forums/showthread.php?t=1775068\\
 \\
@@ Line 529: / Line 480: @@
 | 2004-2006 - 883 | 27777-04 | 27260-00 | 27577-92 | ::: |
 | 2004-2006 - 1200 | 27256-01 | 27260-00 | 27577-92 | ::: |
-{{:techtalk:evo:carb:cv40-floatbowl-0304-ap.jpg?600|}} ((Discussion & pics from Robistro on the XLForum at http://xlforum.net/forums/showthread.php?t=2070191))
+{{:techtalk:evo:carb:cv40-floatbowl-0304-ap.jpg?600|}} ((Discussion & pics from Robistro on the XLForum at http://xlforum.net/forums/showthread.php?t=2070191)) \\
+{{:techtalk:evo:carb:xl1200s_keihin_cv_float_bowl_-_49_state_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\
+There are 3 types checks for the accel pump jets: ball, needle and calibrated orifice-(no check at all). ((buster of the XLFORUM http://xlforum.net/forums/showthread.php?t=2024981)) \\
+Older units had change-able jets to calibrate the squirt, newer ones are fixed and can only adjust the timing of the squirt. \\
 {{techtalk:evo:carb:cv40-accelpump-ckvalve.jpg |Annotated by IXL2Relax at the XLForum}}
+\\
+{{:techtalk:evo:carb:91_keihin_cv_accelerator_pump_jet_by_blackbikedave.jpg?direct&400|}} ((photos by BlackBikeDave, cropped-annotated by Hippysmack http://xlforum.net/forums/showthread.php?t=2024981)) \\
+**Float Bowl Overflow** - Notice the Overflow Tube in the above picture. The channel for the escape of that float bowl overflow was also used for a float bowl drain. This is shown at the beginning of this page on the picture of the bottom of the float bowl. This overflow was a safeguard against the failure of the float bowl valve from not closing. Should that happen, the fuel would be expelled onto the ground rather than being pushed into the intake manifold and filling the cylinders (and eventually the crankcase) with raw fuel.
+Note, however, that the 1998-2003 1200S carbs have no float bowl overflow tube protection. They also have no drain plug & hose to empty float chamber for off riding season or extended storage.

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