hey guys stendori said to post this here cause i wasnt getting any help in the yamaha fourm and was woundering if you guys could help me with this. i have a 89 yamaha moto 4 250 and i cant fuiger out why my carb bowel isnt filling up its getting gas through the filter and the other lines.... what is the settings for the carb...i filled up the bowel with gas and it fired up for a few seconds than died... if u guys need any other info and i can get it for you i can try my best to help you out

 

Sounds like the needle valve on the float is stuck or clogged.

 

 

i fuigerd it out i had the float upside down (kicking my self now lol) now i had moved the slide needel setting up to the middle tryed fireing it up and it wouldnt start i checked my plug and it was wet. what happens if i move the slide needle higher up or back down. what does this needle do...its kinda my first time really tearing into a carb

 

First off if the plug is wet,either dry it off or replace it! Sounds like you're getting too much fuel? Carb slide needle allows more or less fuel charge upon starting(idle) and up to 1/4 throttle response. When you full throttle the main jet supplies most of the fuel mixture. If needle and seat hasn't been replaced in a while, I would replace it plus make sure the float is level with the carb body when held upside down(this is just a base setting) but should be close. Turn the air/fuel screw out 1 1/2- 2 turns out from lightly seated position and see if it runs ok. OPT

 

okay so if i understand you corectly the air/fuel screw is the idle adjustment screw right? and now lightly seated do you mean just barely showing inside the carb... and where should i have the needle set to on the bottom end or the top setting? thank you for ur help opt im very thankful

 

corey, the idle setting is not the air/fuel screw. that is the one he is telling you to light seat(turn all the way in until it stops) and then back out 1 1/2 to 2 turns. it your refering to the clip postion on the slide then in the middle is a good starting place if this your carb set up.

 

okay thank you i think i know which one you mean now ill have to go out and give it a shot thank you guys so much for ur help