1994 Suzuki LT-F160 - Won't Idle

[deke]

I need a little help here. I just bought a '94 160 cc Quadrunner and I really don't know anything about these. It stalls when it goes to idle. I can't turn the idle screw in any farther so I'm thinking it's the air screw. Can anyone tell me which screw is the air screw? Are there any other adjustments for idle? Also, there is a kind of plunger under the tank that you can pull in and out about a quarter of an inch. Can anyone tell me what that is? Any help would be appreciated.

[oxidized_black]

if you can rev it high, i would spray some carb cleaner in there and see what that does.

is the plunger the choke ?

you may need a rebuild kit. you should check the needle and seat at the float too.

Edited November 13, 2012 by oxidized_black

[deke]

Thanks for getting back. The choke is mounted on the left side of the handle bars so I don't know if the knob I'm talking about is part of the choke or not. I don't think so but I will take a closer look tonight and maybe a photo and post again.

As to the idle, I can certainly clean the carb but what I'm wondering is if the fact that I just started using regular gas and the previous owner used high test might make a difference in how it idles. I can't use high test at today's prices so I will have to find a way to make it run smoothly on regular gas.