yamaha 125

[evey91]

looking for some answers i just bought a 1981 yamaha two stroke had a few problems to work out but i can not seem to get it to stay running without holding the choke all the way open i cleaned the carb and still the same problem any ideas

[Chazz of Blades]

Check your intake boot, make sure it's not cracked. Easy solution is to take carb cleaner, and while the motor is idling spray a bit on the intake boot itself and see if the motor smoothes and speeds up.

[bcredneck]

old yamaha carbs suck for that i had a mx 80 2 stork with a auto pop up choke never ran without it wired down even after a carb kit and difrent jets ran fine with the choke even right plug color

[200XMichigan]

probably richen it up a bit, my YT175 is way happier since I have done that.

[evey91]

I got the machine to idle without the choke on now, but when I throttle it up it sticks high idle if I pull out the choke it goes back to an idle. If i unscrew the choke can that also be cleaned what should I be looking for to see if the choke is bad or needs to be replaced .

[bcredneck]

exact same as mine did got new choke parts didnt help at all but my motor ran great with it so i left it