AUTO BYSTARTER

GSX · Post by **GSX** » Tue Jan 03, 2006 9:39 am

I posted earlier about a long crank hard start after sitting a few days, My guess is the auto-bystarter but the manual is not clear about what it does, Is it the choke system for the carb? Does it have to be replaced or is there a fix for it? The service manual is quite vague in its description of what the bystarter actually does.

e_racer1999 · Post by **e_racer1999** » Tue Jan 03, 2006 12:24 pm

from what i've read it seems that it's like an electric choke... if i'm wrong someone else will say so

if it's completely broken it probably will need replacing; otherwise you can try to rebuild it. there is an exploded view posted in the tech. help section.

85stroka · Post by **85stroka** » Tue Jan 03, 2006 2:31 pm

yup,those are electric chokes, we dump and run bigger carbs,or you can just kick and gas a fuel times to prime her.
d*** if knew about this place sooner, I would have kept all that craps,spree blocks and all _SHET!

gman75 · Post by **gman75** » Thu Jan 05, 2006 6:32 pm

Ok, Im curious exactly how does this electric choke work?

I notice when I bench test it with 12V, the bystarter warms up and the needle slowly moves out (takes like 3-4 minutes) So does the needle plug up the carb? Is it plugging an air passage or fuel passage?

scootngo · Post by **scootngo** » Thu Jan 05, 2006 10:55 pm

It blocks a fuel pickup tube. As the air flows past a divertor and around the needle low pressure picks up the fuel.

The needle settles down into a brass tube, this tube has 4 holes near the top.

The tube sits in a cavity in the fuel bowl. This cavity is feed by a very tiny orifice from the main bowl. This orifice is very small and easily blocked if the carb ever dries out, as I found it.