Stripped fuel bowl screw now what?

Slono · March 18th, 2012, 08:20 PM

How do I take out the old screw? There's no room to work a drill in that tiny space!

choneofakind · March 18th, 2012, 08:23 PM

Dremel with a cutting wheel. Cut a slot in the head. Use a flat head (and a LOT of downward pressure) to get it out. Replace with M4x16 screws.

Slono · March 18th, 2012, 08:55 PM

How do I remove the bowls? I was such an idiot and tried to re-jet without removing the carbs.

choneofakind · March 18th, 2012, 08:58 PM

There's 4 screws on each bowl. Remove those, and pull the bowls off. You'll have to do the two front center ones to get either bowl off because the bracket for the idle speed adjuster is there. Take the carbs out. Change jets. Replace the screws you stripped.

Slono · March 18th, 2012, 09:25 PM

Quote:

Originally Posted by choneofakind

There's 4 screws on each bowl. Remove those, and pull the bowls off. You'll have to do the two front center ones to get either bowl off because the bracket for the idle speed adjuster is there. Take the carbs out. Change jets. Replace the screws you stripped.

I thought there were Only 4 screws total, one for each corner.

choneofakind · March 18th, 2012, 09:28 PM

yepp. 4 screws per carb bowl. 2 carbs. 1 bowl per carb.

That means 8 screws total holding the bowls on

Slono · March 19th, 2012, 02:55 AM

Quote:

Originally Posted by choneofakind

yepp. 4 screws per carb bowl. 2 carbs. 1 bowl per carb.

That means 8 screws total holding the bowls on

I gotta check the DIY again... Lol

greg737 · March 19th, 2012, 08:26 AM

I'm going to hazard a guess that part of the problem here is that you were using American Phillips-head screwdrivers on the Japanese Industrial Standard (JIS) screwheads on the EX-250 carbs.

Trying to use Phillips screwdrivers on JIS screws always ends badly.

If you're not planning to swap out all the screws on your carbs (as @choneofakind suggested at the end of his first post) to prevent further stripping of the OEM screw heads I'd suggest either getting a couple of JIS drivers or go to Home Depot and pick up the small size Drywall driver bit (it's the same profile as a JIS driver and won't strip them out like a Phillips screwdriver will).

Slono · March 19th, 2012, 09:33 AM

Part of the problem is that I didn't have any room to work with. My bike is stock. I also couldn't find an offset ratchet handled screw driver, only the offset screwdrivers that resemble a zig zag shape that look like Allen keys. I managed to get the two outer screws off on the left side of one of the fuel bowls but I stripped the outer right ones. I can't image trying to get the inner ones without taking everything off first, there's absolutely no room with all the hoses going every which way.

choneofakind · March 19th, 2012, 12:35 PM

a JIS bit is a good idea also.

It will be easier to get jets changed with the carbs off the bike. If you aren't confident in your ability to do that, find a mechanically inclined friend to help. 2 pair of eyes and 2 brains are always better than 1

GateKeeper · March 19th, 2012, 12:38 PM

It's a bummer once the heads get screwed up, but once you get them out of there and your ready for assembly get yourself some stainless steel allen head bolts, and you won't have to worry about having a hard time getting them out again, hit your closest Brafasco they will have what you need

March 18th, 2012, 08:20 PM	#1
Slono ninjette.org guru Name: Solon Location: Toronto, Ontario Join Date: Jun 2011 Motorcycle(s): 2011 Kawasaki Ninja 250R (sold), 2007 SV650s (deer wrecked), 2010 Suzuki SV650S Posts: 334	Stripped fuel bowl screw now what? How do I take out the old screw? There's no room to work a drill in that tiny space!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
badly stripped brake caliper screw	LoneRonin	2008 - 2012 Ninja 250R Tech Talk	16	February 10th, 2016 05:34 PM
Air fuel mix thumb screw	02337	1986 - 2007 Ninja 250R Tech Talk	7	November 21st, 2013 09:37 PM
Stripped Allen Screw/Front fork change	ManOfGod	1986 - 2007 Ninja 250R Tech Talk	7	April 30th, 2013 10:43 AM
WTB: Float Bowl Screw, Gas tank fairing grommet	haze5736	Items Wanted	0	July 19th, 2011 07:04 AM
stripped screw	scotty	2008 - 2012 Ninja 250R Tech Talk	17	October 6th, 2010 11:05 AM

March 18th, 2012, 08:23 PM	#2
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Dremel with a cutting wheel. Cut a slot in the head. Use a flat head (and a LOT of downward pressure) to get it out. Replace with M4x16 screws.

March 18th, 2012, 08:55 PM	#3
Slono ninjette.org guru Name: Solon Location: Toronto, Ontario Join Date: Jun 2011 Motorcycle(s): 2011 Kawasaki Ninja 250R (sold), 2007 SV650s (deer wrecked), 2010 Suzuki SV650S Posts: 334	How do I remove the bowls? I was such an idiot and tried to re-jet without removing the carbs.

March 18th, 2012, 08:58 PM	#4
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	There's 4 screws on each bowl. Remove those, and pull the bowls off. You'll have to do the two front center ones to get either bowl off because the bracket for the idle speed adjuster is there. Take the carbs out. Change jets. Replace the screws you stripped.

March 18th, 2012, 09:28 PM	#6
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	yepp. 4 screws per carb bowl. 2 carbs. 1 bowl per carb. That means 8 screws total holding the bowls on

March 19th, 2012, 08:26 AM	#8
greg737 - Name: - Location: - Join Date: May 2009 Motorcycle(s): - Posts: A lot.	I'm going to hazard a guess that part of the problem here is that you were using American Phillips-head screwdrivers on the Japanese Industrial Standard (JIS) screwheads on the EX-250 carbs. Trying to use Phillips screwdrivers on JIS screws always ends badly. If you're not planning to swap out all the screws on your carbs (as @choneofakind suggested at the end of his first post) to prevent further stripping of the OEM screw heads I'd suggest either getting a couple of JIS drivers or go to Home Depot and pick up the small size Drywall driver bit (it's the same profile as a JIS driver and won't strip them out like a Phillips screwdriver will).

March 19th, 2012, 09:33 AM	#9
Slono ninjette.org guru Name: Solon Location: Toronto, Ontario Join Date: Jun 2011 Motorcycle(s): 2011 Kawasaki Ninja 250R (sold), 2007 SV650s (deer wrecked), 2010 Suzuki SV650S Posts: 334	Part of the problem is that I didn't have any room to work with. My bike is stock. I also couldn't find an offset ratchet handled screw driver, only the offset screwdrivers that resemble a zig zag shape that look like Allen keys. I managed to get the two outer screws off on the left side of one of the fuel bowls but I stripped the outer right ones. I can't image trying to get the inner ones without taking everything off first, there's absolutely no room with all the hoses going every which way.

March 19th, 2012, 12:35 PM	#10
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	a JIS bit is a good idea also. It will be easier to get jets changed with the carbs off the bike. If you aren't confident in your ability to do that, find a mechanically inclined friend to help. 2 pair of eyes and 2 brains are always better than 1

March 19th, 2012, 12:38 PM	#11
GateKeeper ninjette.org member Name: Dan Location: Mississauga Join Date: Oct 2011 Motorcycle(s): 250 Ninja - Soon Posts: 96	It's a bummer once the heads get screwed up, but once you get them out of there and your ready for assembly get yourself some stainless steel allen head bolts, and you won't have to worry about having a hard time getting them out again, hit your closest Brafasco they will have what you need