Sensitive throttle, air intake, problems running.

els · Post by **els** » Sun Jun 01, 2008 4:48 pm

I recently installed a new bystarter into my 84 spree, thinking it was my only big problem, but I am still experiencing quite a few hiccups. I am still having to plug the air intake when starting it, and I don't know how to fix this. It starts after a few tries and runs to some extent, but sounds like the engine is flooding. When I go to use the throttle it is so sensitive that at the slightest touch the engine revs really high and stays like this for a while. I am new at this and don't have any experience, so I may be missing something totally obvious. I've been referring to the mechanical docs but I must be overlooking or not reading into the problems properly. Any ideas? I really wish I could get this up before summer ends...it is so short here!

Mackeral61 · Post by **Mackeral61** » Sun Jun 01, 2008 5:38 pm

Sounds like your top screw to carb needs adjusting. Tighten all the way to the right and come out 2 complete turns then start it up....you may have to turn it to the left a bit more...I think mine is about 3 turns out while my middle screw is 2 1/4 turns out. I 've read each scooter is different but there is a starting point for all.

Kenny_McCormic · Post by **Kenny_McCormic** » Sun Jun 01, 2008 9:33 pm

Mackeral61 wrote:Sounds like your top screw to carb needs adjusting. Tighten all the way to the right and come out 2 complete turns then start it up....you may have to turn it to the left a bit more...I think mine is about 3 turns out while my middle screw is 2 1/4 turns out. I 've read each scooter is different but there is a starting point for all.

You have your carb setup wrong, out that far and it will run too hot, the middle (air screw) should be out 1 7/8 and never needs adjustment, top screw adjust for nice idle.

els · Post by **els** » Mon Jun 02, 2008 9:04 am

Is there a way to judge the correct position of the idle screw without any tools, or is it up to chance and fiddling?

CharlotteSpreeRider · Mon Jun 02, 2008 12:24 pm

Every carb is slightly different, and so are people. Some like high idle, some like low idle. There is no "one size fits all" for the idle setting.

-aseigler

Kenny_McCormic · Post by **Kenny_McCormic** » Mon Jun 02, 2008 3:48 pm

Quick enough to keep it tunning once its warmed up is how I set it, tends to die when cold (I need to go play with it some more) but sounds great.