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post #1 of 13 (permalink) Old 11-15-2016, 04:57 PM Thread Starter
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Carb cleaning

Cleaning a 2005 katana 600 carbs and was using a video from YouTube.The carb they were cleaning had a rubber grommet over the pilot jet does mine also supposed to have on?
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post #2 of 13 (permalink) Old 11-15-2016, 05:59 PM
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Don't see one in the diagram. Does this match yours?

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post #3 of 13 (permalink) Old 11-15-2016, 06:00 PM
Too cheap to buy new bolts..
 
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#18 is an o-ring. That's all I see.
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post #4 of 13 (permalink) Old 12-02-2016, 11:11 PM Thread Starter
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Now that I cleaned the carbs I found air mixture screws out about 4 turns so I adjusted so that they are out 2 turns. After bench syncing the bike runs but it fluctuates high and low rpm. How do I set the air mixture screws while running ? Do I pull the air box out?
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post #5 of 13 (permalink) Old 12-03-2016, 03:13 PM
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I can't answer that specifically, but in general you have to have the bike running and idling at a consistent RPM, then slowly turn each idle mixture screw 1/4 turn at a time monitoring the RPMS. Find the point where the RPMs peak and there you go. It's a bit tedious to do sometimes - adjust the idle speed back to normal when necessary.

As for the fluctuation, that could be a air/vacuum leak somewhere, or one cylinder cutting in and out with either a fuel or spark issue. You'll need to address that prior to doing the idle mixture.
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post #6 of 13 (permalink) Old 12-03-2016, 03:20 PM
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I was guessing an air leak as well causing the surging.

2008 XL1200R

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post #7 of 13 (permalink) Old 12-13-2016, 11:46 AM
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I concur with Dodsfall. At least my experience with lawn mower carbs.
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post #8 of 13 (permalink) Old 12-15-2016, 07:39 AM
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X3 on the air leak

Check to make sure the carbs are seated in the boots and the clamps are tight


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post #9 of 13 (permalink) Old 12-24-2016, 02:00 PM Thread Starter
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How is it possible to adjust the mixture screws while running ?
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post #10 of 13 (permalink) Old 01-07-2017, 01:28 PM
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Quote:
Originally Posted by Suzukiridur View Post
How is it possible to adjust the mixture screws while running ?
You need a pilot screw adjusting tool. This is the one I have.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I particularly like this one because it has an adjustment that allows you to set how far the screwdriver tip sticks out from the base of the tool. That allows it to work with many different carbs.

TIP: Put some white lines on the black barrel part just below the plastic handle. Put the marks every 90 degrees. That allows you to see how far you are turning the screw: 90 degrees, 180 degrees, etc.

Hope that helps.

Bob
Vintage/Classic Bike Restorer
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post #11 of 13 (permalink) Old 01-07-2017, 02:24 PM
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Quote:
Originally Posted by WingMan71 View Post
You need a pilot screw adjusting tool. This is the one I have.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I particularly like this one because it has an adjustment that allows you to set how far the screwdriver tip sticks out from the base of the tool. That allows it to work with many different carbs.

TIP: Put some white lines on the black barrel part just below the plastic handle. Put the marks every 90 degrees. That allows you to see how far you are turning the screw: 90 degrees, 180 degrees, etc.

Hope that helps.
Wingman: I have a couple of older Goldwings and have trouble reaching the adjustment underneath - do you know if that tool will fit? Hard to tell from the photo.
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post #12 of 13 (permalink) Old 01-07-2017, 03:25 PM
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Quote:
Originally Posted by cmonSTART View Post
Wingman: I have a couple of older Goldwings and have trouble reaching the adjustment underneath - do you know if that tool will fit? Hard to tell from the photo.
If you are asking if the screwdriver tip on that tool will fit, the answer is yes.

If you are asking if you can physically place the tool in position and onto the pilot adjusting screw the answer is maybe, depending on which Gold Wing you've got.

I mostly work on GL1800, GL1500, and occasionally a GL1200 (including mine). It's been a long time since I've had a GL1000 or GL1100 "naked" Wing in the shop. I remember that the pilot screws on those carbs are not on the bottom of the carb like the Keihin carbs on UJM (vertical inline four) Hondas. They stick out the side of the carb at a 45 degree angle or so and have a limiter cap on them. To adjust them any bit at all past factory settings you have to remove the limiter caps.

Since I don't have a naked wing in the shop right now, maybe the dimensions on the tool would help you determine if it will reach. The main part of the tool (long section with handle) is 17" long. The short section with the screwdriver tip is 2" long and it's a 90 degree angle. That should help you determine if it will reach/work.

I almost always set pilot screws right after a carb rebuild with the carbs still off the bike. When I rebuild the carbs I set the pilot screws to 1 full turn farther out (richer) than the factory spec while they are still out of the bike. That's because Honda typically sets these waaaaay too lean on purpose, which is why they then have to add all sorts of air cut valves, etc. to keep the engine from backfiring during decel because the mixture is too lean!

For example, the factory spec on my '87 GL1200A is 3 & 1/2 turns out. When I rebuild GL1200 carbs I set them to 4 & 1/2 full turns out and that usually ends up being the sweet spot. I'm not sure what the specs are on a GL1000 or GL1100 without looking that up in the FSMs for each bike. If you have a manual with the factory spec in it, I'd just set them to 1 full turn farther out than that and you should be good to go.

I've never been able to reach the pilot screws with this tool on a GL1200I or GL1200A with all the fairing lowers and chrome shrouds and other junk in the way.

So I guess just see if the tool dimensions I provided will help you determine for sure if it can reach the pilot screws on your naked Wings.

***

Bob
Vintage/Classic Bike Restorer
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post #13 of 13 (permalink) Old 01-07-2017, 08:48 PM
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Thanks Wingman, just wondering. My 1100 has the screws on the bottom in about the most inaccessible place imaginable. Most of the adjuster tools don't fit there.
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