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Old 12-26-2010, 07:35 PM   #91
JollyMeanGiant
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Location: Colorado Front Range
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Jetting the XT250

artbone:

Here's my experience with jetting the XT250 for higher elevations. I got the main jet part number from a parts fiche and then I tried variations of that number at www.ronayers.com to find the other sizes. These jets were used by a bunch of Yamaha thumpers in the 1980s and 1990s.

Yamaha part number - main jet size

288-14343-70-00 is #140
288-14343-68-00 is #135 standard main jet for 2008 XT250
288-14343-65-00 is #130
288-14343-63-00 is #125
288-14355-61-00 is #122
288-14343-60-00 is #120
288-14343-59-00 is #118

I ride from 5000ft up to 12000ft. On long hills and full throttle in 4th and 5th gear, my XT (with #135 main jet) had a bad rich stumble. I drilled some holes in the airbox, but it wasn't enough, so I got the smaller jets. I finally ended up with #122 main jet. I did not make any changes to the needle. The bike runs much better and I'm happy.

JollyMeanGiant screwed with this post 12-26-2010 at 07:48 PM
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Old 12-26-2010, 10:20 PM   #92
empanadaman
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Awesome info, thanks JollyMean!
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Old 12-27-2010, 05:33 AM   #93
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Here's a few pics of my 2007 Japanese spec XT250 Serow...

Outside a little Hobbit cabin in Sweden.



Mine and Reggie "The Cameraman's" XT250's at Eilean Donan Castle-Scotland




Applecross-Scotish highlands. (Taken by Reggie)



On the beaches-Omaha beach Normandy


Hammock dweller screwed with this post 12-28-2010 at 03:59 AM
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Old 12-27-2010, 05:02 PM   #94
empanadaman
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Awesome pics Hammock Dweller!
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Old 12-27-2010, 08:48 PM   #95
sieg
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http://www.advrider.com/forums/attac...1&d=1293507991

Wifes latest addition, been to cold for her to ride it except one day.
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Old 12-28-2010, 01:17 AM   #96
The Cameraman
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Quote:
Originally Posted by empanadaman View Post
Awesome pics Hammock Dweller!
Hi Empanadaman,

the shot at Applecross, with the clouds clinging to the mountain was mine, all the others are by Docs (AKA Hammock Dweller) fair hands!

Great bikes for a great trip.

Regards

Reggie
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Old 12-28-2010, 03:58 AM   #97
Hammock dweller
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Sorry about that Reggie. They're all mixed up with mine.

Credit where credit is due, great shot.
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Old 12-28-2010, 07:06 AM   #98
The Cameraman
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Quote:
Originally Posted by Hammock dweller View Post
Sorry about that Reggie. They're all mixed up with mine.

Credit where credit is due, great shot.
No worries matey, you're always welcome to use my images should you see fit.

Regards

Reggie
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Old 12-28-2010, 05:41 PM   #99
empanadaman
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I'm envious of you guys... after you get tired of riding around the UK you can just cross the channel and ride around Europe! Sweden during the summer sounds pretty nice... lot's of nice scenery I imagine!


Quote:
Originally Posted by The Cameraman View Post
Hi Empanadaman,

the shot at Applecross, with the clouds clinging to the mountain was mine, all the others are by Docs (AKA Hammock Dweller) fair hands!

Great bikes for a great trip.

Regards

Reggie
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Old 12-28-2010, 05:51 PM   #100
empanadaman
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This cold weather is killin me... I want to break in the new bike but I'm too much of a wussie to ride in the cold! I took her out a couple of times but it took too long afterward to get all the sand out of my mangina!!


Quote:
Originally Posted by sieg View Post
http://www.advrider.com/forums/attac...1&d=1293507991

Wifes latest addition, been to cold for her to ride it except one day.
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Old 12-28-2010, 06:02 PM   #101
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Put a Wolfman Express tank bag on tonight. I'll take some better pics tomorrow during the day but you can see the reflective sections of the bag in this photo.

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Old 12-31-2010, 07:24 AM   #102
artbone
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Quote:
Originally Posted by JollyMeanGiant View Post
artbone:

Here's my experience with jetting the XT250 for higher elevations. I got the main jet part number from a parts fiche and then I tried variations of that number at www.ronayers.com to find the other sizes. These jets were used by a bunch of Yamaha thumpers in the 1980s and 1990s.

Yamaha part number - main jet size

288-14343-70-00 is #140
288-14343-68-00 is #135 standard main jet for 2008 XT250
288-14343-65-00 is #130
288-14343-63-00 is #125
288-14355-61-00 is #122
288-14343-60-00 is #120
288-14343-59-00 is #118

I ride from 5000ft up to 12000ft. On long hills and full throttle in 4th and 5th gear, my XT (with #135 main jet) had a bad rich stumble. I drilled some holes in the airbox, but it wasn't enough, so I got the smaller jets. I finally ended up with #122 main jet. I did not make any changes to the needle. The bike runs much better and I'm happy.
Thanks, that's the kind of info I was looking for. I still haven't received my jet kit from fleabay yet and I'm headed down to Merida for 8 days tomorrow but as soon as I get back I'm going to solve this problem.

Art
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Old 12-31-2010, 07:51 AM   #103
artbone
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motorcyclecarbs.com

I found this website that seems to have a lot of stuff for all kinds of carbs but none of the part #s match up with any part #s I have. If my ebay jet kit doesn't work out I'll email these folks and see if they can help.

Art
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Old 01-03-2011, 08:07 AM   #104
hypoman
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xt250t motard project in cebu, Philippines

hi guys,
heres a pic of my xt250t with a kawasaki balius set of wheels loosly bolted onto it while i was changing my dirt tyre the other week.

now im thinking of doing the whole conversion...
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Old 01-09-2011, 12:48 PM   #105
Short'n'Spikey
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First day out on the Serow 225.


Rob shows me how it's really done!


Can I have my bike back now please....?


Onwards and upwards...


Phew - thought I'd lost my bike for good!
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