A forum for owners of Yamaha TTR250 trail and enduro bikes!

Maxim_X · Maxim_X

Yo! So it goes like this. I buy this bike and it's got a few things done to it. I busted it all open because it was surging when I was riding at a stead speed. The airbox snorkle is cut and the throttle stop is removed. I get on the google and it sais that this is a basic way to open up the bike, but it need jettin...

petenz · petenz

What is the standard main & pilot jet size ? I now know why the bike came with a nice new unused Yamaha GYTR pipe.. I put it on .. the bike runs like a X#@%&*^?.... EDIT.... Main 137 & Pilot 52 sound right ? "internet search" -- Edited by petenz on Saturday 27th of July 2013 04:44...

davecambo · davecambo

hi just wondering how hard it will be to adjust the main jet needle to 30mm as per staintune exhaust recommendation for installing slip on?

dfaz · dfaz

for anyone who hasnt read my Earlier post I have found a supplier for Jets they are called motocarb.3 Victoria rd West.Blundellsands.Merseyside.UK L23 8UG . tel. 01512384170 I ordered 2 jets all in stock delivered registered post next day £9.90 so if anyone needs jets he is knowledgable and reliab...

TTRfan · TTRfan

My turn to ask for help I am rebuilding a carb and want to go down from a 52.5 to a 50 pilot jet. The replacement jet looked right but didn't fit as the small diameter section was a tad too wide I have a new genuine Yamaha 50 pilot jet in my spares box but it is much shorter. See pic below: The shorter jet fits fi...

fwtian · fwtian

Brian i read your article at ttr250.com but i couldnt understand which main jet and pilot jet is the best for a 1993 model. My bike is 74mm,standard exhaust and Teikei30 carburator. You know which are the best main and pilot jets for this bike??

Topic		Started By	Replies	Views	Last Post
	I can't get the jetting right. Or something else? (Preview) Yo! So it goes like this. I buy this bike and it's got a few things done to it. I busted it all open because it was surging when I was riding at a stead speed. The airbox snorkle is cut and the throttle stop is removed. I get on the google and it sais that this is a basic way to open up the bike, but it need jettin...	Maxim_X	9	1464	Dec 29, 2013 by ttboof
	Jets (Preview) What is the standard main & pilot jet size ? I now know why the bike came with a nice new unused Yamaha GYTR pipe.. I put it on .. the bike runs like a X#@%&^?.... EDIT.... Main 137 & Pilot 52 sound right ? "internet search" -- Edited by petenz on Saturday 27th of July 2013 04:44...*	petenz	13	2051	Jul 27, 2013 by petenz
	carb needle adjustment (Preview) hi just wondering how hard it will be to adjust the main jet needle to 30mm as per staintune exhaust recommendation for installing slip on?	davecambo	19	40090	Feb 27, 2012 by truslack
	supplier for Jets. (Preview) for anyone who hasnt read my Earlier post I have found a supplier for Jets they are called motocarb.3 Victoria rd West.Blundellsands.Merseyside.UK L23 8UG . tel. 01512384170 I ordered 2 jets all in stock delivered registered post next day £9.90 so if anyone needs jets he is knowledgable and reliab...	dfaz	1	884	Jan 27, 2012 by Cubber
	Help! Pilot jet differences? (Preview) My turn to ask for help I am rebuilding a carb and want to go down from a 52.5 to a 50 pilot jet. The replacement jet looked right but didn't fit as the small diameter section was a tad too wide I have a new genuine Yamaha 50 pilot jet in my spares box but it is much shorter. See pic below: The shorter jet fits fi...	TTRfan	8	2440	Dec 8, 2011 by TTRfan
	Carburettor setup, jets & needles 1993 model (Preview) Brian i read your article at ttr250.com but i couldnt understand which main jet and pilot jet is the best for a 1993 model. My bike is 74mm,standard exhaust and Teikei30 carburator. You know which are the best main and pilot jets for this bike??	fwtian	7	1500	Nov 19, 2011 by TTRfan
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