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The TTR250 FAQ web pages -> TTR250 -> Carb stuff -> All Balls Carby repair kit
Post Info TOPIC: All Balls Carby repair kit
Base


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All Balls Carby repair kit
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Its probably already been mentioned somewhere on here, but after purchasing  the All Balls Carby rebuild kit, have to say i was pretty disappointed with it.

Hadn't had the  carb off since i got it. Theory being if it ain't broke, dont fix it. Was getting some minor over reving when coming to idle, so I though it was time to have a look. Was thinking maybe clogged jets or sticking slide, so ordered the rebuild kit as I thought all the gaskets and 'o' rings would probably need replacing, especially after id opened it and cracked the seals.

Was pretty filthy inside, usual gum that builds up on things, but nothing that wouldn't clean up with a bit of Carb cleaner. Jets were reasonable with no obvious blockages. Gave them a clean and ream out with wire strand.

Accelerator pump diaphragm was pretty brittle and so were the 'o' rings and would need replacing.

Top end of the Carb was surprisingly clean and everything was tight and as it should be. Slide had no obvious free play and was moving freely ans not sticking that i could see. Gasket only to be replaced.

Anyway it all got a good clean anyway. 

Only thing i didnt do was remove the float pin or float , as at sometime in the past it had obviously been broken and repaired. So the float valve didnt get much attention.

Now came to put it all back together again, and that's when the issues began.

Firstly no 'o' ring replacements for the  accelerator pump diaphragm in the All Balls kit. Had to hunt high and low through all my 'o' ring supplies and still coukd not come up with correct size. Ended up fitting some slighly smaller ones.

Secondly, wrong size main jet. 137 supplied, 147 original. Kept the original  in. 

Third, no 'o' ring on fuel screw and the only  one supplied in the kit was too small. Kept the original in.

Anyway its all back together and runs fine as far as i can tell without taking it for a good run.

Maybe my fault a  i didn't actually check the contents of the kit before i ordered it, just looked at description fits TTR250 99-07.

Accelerator Diaphragm kit didnt have the 'o' rings included either.

I've since looked again at the kits available on Ebay and there is one that supplies everything. Still only the 137 jet tho.

Anyway just  for info of others contemplating using an All Balls kit.

 



-- Edited by Base on Friday 28th of February 2020 08:09:02 AM

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TTRfan


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Good info - thanks Cam wink

Steve sells the All Balls kit from Totally TTRs and he found the same as you so he adds some bits. See the note he has in his advert below biggrin

Here is what I have added after some fitting issues.....

  • I have added 2 x Carb diaphragm O ring seals to the kits (not in the main picture) and the 2 screws for the diaphragm cover.
  • Correct fitting screws and locking washers x3 have been added to the All Balls kits, for the float bowl cover.
  • I have also supplied correct fitting O ring for the pilot screw, as the All Balls one is too small.

 



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Base


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Yes forgot about the washers for  the float bowl. 

Couple of pics of the float pin repair.20200224_113314.jpg

Not sure what they've used for the repair but it seems to be holding.

20200228_140243.jpg

Thanks for the tip about fixing that sloppy stand. Works a treat.

 



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Base


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Happy to report, even with the issues with the All Balls kit, the bike is now running perfectly. All previous problems have disappeared and a good clean and replacing a few parts has definitely been worth it.

With the help of the pictorial guide and video from here it was in the end quite an easy job. After you've had the carb in and out a few times it doesn't take long either.

Thanks all.

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TTRfan


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Good to hear of the happy ending! Thanks for letting us know wink



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CjJoyce


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does the all balls rebuild kit come with check valve? or need to purchase seperately?


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ttr steve


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You will need to buy that separately - see here. 



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CjJoyce


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Thank you for clearing that up, ordered from rocky mountain last night



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TTRfan


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When you rebuild your carb Chris, have a look at an exploded diagram of the carb in the workshop manual, or on the Yamaha microfiche, you will see that there is no O ring under the main jet - repeat - no O ring wink

Brian

 carb springs.jpg


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CjJoyce


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Thank you, will take a look at the manual again. No 0 Ring. got it



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