carb drain screws - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 10-21-2011, 12:06 PM Thread Starter
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carb drain screws

Deleted, answer found. See below.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike

Last edited by VN750Rider/Jerry; 10-21-2011 at 01:02 PM.
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post #2 of 8 (permalink) Old 10-21-2011, 12:53 PM
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To the best of my knowledge the stock drain screws on the carbs are slotted brass heads...can't remember exactly if the are slotted or Phillips but they are not Torx, or allens, or anything like that.

They are hollow with holes in the sides... So to drain the carb you do not need to remove them.... Just back them out a few turns.

So... No idea what you are talking about unless some previous owner replaced them.

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post #3 of 8 (permalink) Old 10-21-2011, 01:01 PM Thread Starter
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I found the answer. I was wrong all along, they are not Torx, they ARE common metric Allen. But they are solid screws, not hollow. You don't have to remove them to drain the carbs, because they have tapered ends, all you have to do is open them a couple of turns to uncover the drain hole. On the Vulcan they are recessed, so there is nothing on the outside to grab onto to loosen them if you completely round out the inside. I found them at ronayers.com for $5 apiece, with $5 shipping, so I am going to order a couple of new ones, and use the right tool on them. Most bikes I've had did use straight slotted drain screws, but the Keihin CVK carbs on the Vulcan are definitely Allen.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike

Last edited by VN750Rider/Jerry; 10-21-2011 at 01:04 PM.
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post #4 of 8 (permalink) Old 10-21-2011, 04:02 PM
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Just to ease my mind that I am not going senile... I did a bit of searching on this and it appears the drain screws were in fact changed at some point. My bike was a 2002 and it had Phillips head screws. Jerry's bike seems to have Allen head screws.

I found this post by Oldhoss in the carb photo sticky:

"....Cindy`s pictures seem to show either a "Torx" or an "Allen" head drain screw.

I just looked at my bike and my drain has a screw that appears to accept a "Phillips" #2 or a flat head screwdriver...."

So... I'm not alone crazy or senile as at least one other owner says they do not have Allen head drain screws......

Knifemaker....old but not senile yet...

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post #5 of 8 (permalink) Old 10-21-2011, 04:34 PM
If only it had 6th gear..
 
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Mine are also Allen's.

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post #6 of 8 (permalink) Old 10-21-2011, 04:38 PM
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KM--if you are still healthy enough to "throw a leg over" and then balance the bike (especially a bike like an FJR), then you are NOT old....but rather....."mature".....

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post #7 of 8 (permalink) Old 10-21-2011, 10:07 PM Thread Starter
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For some reason (not sure why), I just always thought they were Torx screws. And Torx bits fit, but a little loose. Then I found out about JIS "Japanese International Standard" fasteners, and how they were a bit different from American fasteners, including some metric fasteners. I guess kind of like the old British Whitworth sizes. Then I finally took a really good look at an undamaged one, and it was definitely Allen. I don't know what size yet, I have several sets of Allen wrenches and bits, but the closest thing to the bike was a huge Tupperware box full of assorted Allen wrenches, the L shaped ones. I dug through it, and the 3rd or 4th one I tried was a perfect fit, not loose at all. I'll try one of my marked T handled wrenches, and see what size it is.

I checked ronayers.com, and it lists the same part number for the Vulcan 750 drain screws as my late Ninja 500. I never even looked at the drain screws on it. Both have Keihin CVK carbs.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
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post #8 of 8 (permalink) Old 10-21-2011, 10:11 PM
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Quote:
KM--if you are still healthy enough to "throw a leg over" and then balance the bike (especially a bike like an FJR), then you are NOT old....but rather....."mature".....
What does it mean if you throw "Both Legs" over? Ponders...... I think i did that one night after a few cool ones!


Vulcan #1 1993 - 28K
Vulcan #2 1999 - 26k
It All Comes Down To 3 Things:
#1 Fuel
#2 Spark
#3 Mechanical
Any One Fails - Then It Dont Run

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