got a 2001 today yz blue with white bros pipe, re jetted and graydon nerfs.bike has been in storage for two years. its about as close to mint as your can find picked it up for $1700. the owner said the bike was built after the tranny problem and he never had any trouble .

 

Man, sounds like you got a good deal

 

great buy can't go wrong with that...

 

If its an 01 it probably does have the tranny problem. Lets hope you never have to tear into it, but just wanted to give you a heads up!

 

If it is stamped a 2001 then it is a 2001 no matter the build date, it's still a good deal
anyway, I replaced my tranny 2 times and after the second time I never used reverse gear because that is the problem,
The reverse gear is to large a ratio for the strength of the gear itself and how it rides in your tranny.
Simply never use reverse and you should not have any troubles,or replace it with the 2002 update.
I have been going on 3 years now and no troubles with my tranny again.

 

Congrats on the great deal

 

im going to have to pull the carbs off and have a lookat them. the bike doesnt want to run with out the choke on and then it will flood out after a bit.maybe the floats are sticking or somthing like i said its set for two yrs same old gas in it, ill drain that and clean the carbs.does anyone know what main jets it should have in it with stock filter and a white bros pipe. i nead to check that while i have the carbs apart .thanks guys

 

if you don't have any airbox mods, I would probably try 145/150, 150/155 since you have the stock filter.

or buy a dynojet kit and follow the instructions. probably 144/146 with the new needle clip position on 3.

also try a search on here.

oh yeah, go to CT racings website and look at the pipe shootout, there will be some recommendations for each pipe and airbox mods.

 

Listen to ba01raptoraz your first mod should be your airbox lid, second mod should be the jet kit from dynojet this will make that CT pipe come alive and will gain you a realistic 4-5 hp with hardly any investment.
if any machine sits for 2 years the gas is bad, it probably started to turn to varnish already.clean those carbs and boots up and you should have that "not running without the choke" problem fixed, You sound like you have a clue as to what you are doing so it should be simple enough for you, the first time you take the carbs off it will take you a good 2 hours but once you do it, it should get easier to do.

 

aawww i remember thefirst time i took my carbs out, took for ever. Now its like 40 min cause im know what im doing, another thing with the Jets it depends what elevation you are at to. Im running 165/170