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The TTR250 FAQ web pages -> TTR250 -> Carb stuff -> Carburettor - replacing a damaged carb drain screw
Post Info TOPIC: Carburettor - replacing a damaged carb drain screw
TTRfan


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Carburettor - replacing a damaged carb drain screw
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The forum seems to replicate owners problems on my own bikes somehow confuse

This time the problem was a rounded out drain screw on a carb.
Carb drain plug 001.jpg

I drilled out the damaged screw with a 3mm drill and then extracted it with a 3.5mm extractor.

Carb drain plug 002.jpg

 

Carb drain plug 003.jpg 

The new drain screw is part number 14T-14104-00 - available here

Job done!

Brian



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colin13846


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Replacing a damaged carb drain screw
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Nice bit of engineering that Brian.

 Its a coincidence that I checked my drain screw only yesterday for the first time and luck was with me,  no one had had been at it as the the screw was undamaged. It came out with no problems and after a dab of copperslip I carefully refitted it. 



-- Edited by colin13846 on Monday 30th of January 2012 06:49:09 PM

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Colin,

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Cubber


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I've got an old clock and wristlet watch that need repairing. confuse

Is it OK if I bring them round to your place sometime, looks like you have the tools (and patience). biggrin

Impressive bit of work Mr. S. smile

Martyn



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shack


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your extracter looks better made than mine, where did you get it from?
I'm slowly working around the bike with a tap and die set cleaning up and clearing out, so my grease and slip has never seen so much action, still at least I should have faith that it will come apart if I need it to.

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dfaz


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You make it look easy I could not get that bl@@dy drain screw out I thoght it was going to snap the extractor,I confess I chickened out and took it to the machine shop and let them remove it for me, new drain screw should be here tomorrow( hopefully)then its testing time.

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TTRfan


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shack wrote:

your extracter looks better made than mine, where did you get it from?

 Maplins - see http://www.maplin.co.uk/6-piece-damaged-screw-and-bolt-remover-99849



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Cubber


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Where there's a will, there's a way. smile

Ingenious bit of jiggery-pokey, but effective. biggrin

Martyn



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TTRfan


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Livotlout wrote:

DO NOT USE CHEAPO EASY OUT/EXTRACTOR : Had to weld on attachment after easy out broke!                                                                                   

 Cripes! Hopefully the extractor wasn't from a Maplins set??????  confuse



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Fixer


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Cheaper at Amazon

http://www.amazon.co.uk/Rolson-Tools-28997-Damaged-Remover/dp/B0017W5GOA



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hertsrider


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oh dear this thread is so relevent...me and rattlyolddt really needed to un-do our carb drain screws having fallen foul of the Ferneux Pelham 1km long ford...both bikes drowned in the waist high water and gave up the ghost...it was a tough push to the end to get them out and to try and repair....both carbs were fill of water and we had to remove them basically to ge the water out...not the type of repair you need to be doing on the road side!!

Looks like we'll both be looking to drill out and replace the carb screws...either that or avoid that bloody place like the plague! 1km long ford...waist deep with stale stagment stinking water....not good!!

CLICKY THING

 

Just made the link LIVE



-- Edited by Cubber on Monday 4th of June 2012 02:16:47 PM



-- Edited by Cubber on Monday 4th of June 2012 02:28:08 PM

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TTRfan


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Bad luck guys.

I guess its a warning to other owners that use ford crossings to check that they can undo their carb drainscrews - easier to find out if its seized and repair it in the garage!

Brian

PS The link doesn't work on my PC smile



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Cubber


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Sorry for the little glitch but I jiggered the link to Hersrider's picture. cry

Instead I did a bit of sleuthing and found the movie of it, may be better?? confuse

Martyn



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rattlyolddt


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ha ha. This does make for pleasant reading in the pub. Hertsrider and I do indeed require new drain screws, and new float bowl screws too. It was a lovely ride out until we drowned our bikes. Nevermind. Brian, your fancy three socket spanner doo dah wotsit has never been so welcome an addition to ones tool kit.

I would like to add we did leave Ferneax Pelham under our own steam. Eventually.

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TTRfan


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Good to hear you didn't lose your sense of humour!

I love fords but can't recall doing one that long - or deep confuse

Brian



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TDVT


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My drain looks almost as nice as the one at the top of the thread.

It's easy to spot in the exploded view on the parts sites, but the part description comes up as "Air Screw Set".  Sometimes with this nunber, 14T-14323-00-00, as well?

Cheap enough, $3-4 but thought I'd mention it.

Insights?



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TTRfan


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I think the "set" includes a spring but it isn't necessary.

Brian



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TTRfan


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RE: Carburettor - replacing a damaged or stuck carb drain screw
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I know this is an old thread but thought it would be helpful to pass on my experience from yesterday.

I had two float bowls with stuck drain screws and was preparing to go the drill/Easyout route when I thought I would try out something I had recently seen or been told about.

That is to heat the area around the drain screw with a heat gun or whatever (I used a MAP torch - brilliant bit of kit!) and spray with a releasing fluid. I used PlusGas - nasty smelling stuff!

The idea is to get it hot enough to make the releasing fluid plume white smoke but not ignite. 

What seems to happen is that the fluid gets sucked in between the steel bolt and aluminium bowl.

As there was absolutely no head left on one of the drain bolts I started to drill on it with a LH drill bit and the screw just span out - loose as you like biggrin 

Same with the other which I could still use a screwdriver on - came out perfect and is good to go again.

After a series of mechanical mishaps that really cheered me up coz I hate Easyouts......

Hope that helps someone.

Brian



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