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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Running a bit rough
Post Info TOPIC: Running a bit rough
barra8


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Running a bit rough
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While you got the carb off check the intake (rubber) boot is not perished & your seals are good.

I still have a full carby ''kit'' here....All genuine YAMAHA PARTS.  It cost me $68.26 shipped from the US. You can have it for $70.00 if you like (mates rates). (up to you)

 

..................................................

Jarrah.


 



-- Edited by barra8 on Wednesday 2nd of January 2013 01:56:27 PM

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BM Steve


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Hi All

Before I start stripping bits off the bike I thought I would ask

As the title suggests it's running a bit rough in the bottom of the rev range

No problem starting, stopping, no backfires or starving, it's all good, just a bit rough

I figured just strip the carb and give it a clean out and maybe reset the float if needed

Any suggestions ?

Cheers

Steve



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2004 TTR250 - Highway Dirtbike Hand Guards, 38mm Bar Risers, D606 Front & Rear, Opened up Airbox with Twin Air Filter, Re-jetted Carby, B+B Bash Plate & Frame Guards, DIY 3mm Alloy Tail Tidy, 14/47 Gearing.

 
barra8


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Your on the right track....

When you do this drop your needle down one setting.

That should be the third setting (if it has'nt already been done)

Failing that....Give me your address again & i'll send you my old needle set. It is still good as new aww

This thread should say the rest....

http://ttr250.activeboard.com/t51803681/rebuilding-a-carburetor/

................................

Jarrah.



__________________

YAMAHA ROCKS!!!!!!

TTR250ACTIVE''BORED'' ADDICT!

Favourite quote: To be old & wise first you must be young & dumb!

My own: Your never too young to learn an old trick! :)

barra8


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Don't play with your float setting!

Unless the float is not shutting off level with the carby this will not be needed.

..................

Jarrah.



__________________

YAMAHA ROCKS!!!!!!

TTR250ACTIVE''BORED'' ADDICT!

Favourite quote: To be old & wise first you must be young & dumb!

My own: Your never too young to learn an old trick! :)

BM Steve


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Posts: 691
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Thanks, I thought so

Also I got the idea from the Carb rebuild thread about annealing for the leaky sump but wasn't sure if that was what you meant

So a bit leaner you think as well, I haven't looked at the plug for some time but the exhaust is ever so slightly sooty.

Thanks for the needle offer, I don't know what a worn needle looks like but I would guess ridge lines, blunted point, something like that ?

"Don't play with your float setting!"   Sage Advice I think biggrin

 

Cheers
Steve



__________________

2004 TTR250 - Highway Dirtbike Hand Guards, 38mm Bar Risers, D606 Front & Rear, Opened up Airbox with Twin Air Filter, Re-jetted Carby, B+B Bash Plate & Frame Guards, DIY 3mm Alloy Tail Tidy, 14/47 Gearing.

 
barra8


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Thanks for letting me know i may change that on the carby thread.

Yeah it may be running rich from the needle being blunt.

Also good to give it a good soak overnight in clean petrol if you think it's that bad. Remember: An air compressor is your friend wink

If it's worn it will be a little blunt & not have a conical point (if you know what i mean). This can be hard to tell unless you know what to look for.

It's no trouble for me to send the needle set. Call it a swap for the stickers

I will also send you my #147 jet (to be sure)

.........................

Jarrah.



__________________

YAMAHA ROCKS!!!!!!

TTR250ACTIVE''BORED'' ADDICT!

Favourite quote: To be old & wise first you must be young & dumb!

My own: Your never too young to learn an old trick! :)

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