Fuel Mixture Screws 2005 GS500F

jbanst · December 22, 2011, 03:15:43 AM

So I'm taking apart and cleaning the carbs on my 2005F. Although I'm not close to being completed, I'm having problems locating everything on the carbs, specifically the fuel mixture screws. Most of the diagrams or pics I've seen are with the older 'E' versions. Where on the carbs is the fuel mixture screw?

BaltimoreGS · December 22, 2011, 04:35:16 AM

You have to drill out the taller brass cap seen in the lower center of you second pic to access the mixture screw

-Jessie

jbanst · December 22, 2011, 11:25:38 AM

Quote from: BaltimoreGS on December 22, 2011, 04:35:16 AM
You have to drill out the taller brass cap seen in the lower center of you second pic to access the mixture screw

Is there a reason for that? I mean, should I leave it as it is or drill it out to make sure it's set correctly? I just don't want to screw anything up here....

BaltimoreGS · December 22, 2011, 11:39:44 AM

The screw is blocked off for emissions reasons from the factory. If you have had the carbs apart it is a very good idea to check that adjustment and probably necessary if you re-jetted.

-Jessie

BaltimoreGS · December 22, 2011, 12:41:23 PM

And don't do what this guy did and drill the brass cap that is lower down. You can see the mixture screws exposed in the pic.

-Jessie

jbanst · December 22, 2011, 01:43:39 PM

great, thanks for the pic! The manual I have isn't very clear for the newer models. This site has definitely helped me out!

BaltimoreGS · December 22, 2011, 02:56:57 PM

No problem, good luck

-Jessie

ghostrider_23 · December 22, 2011, 04:13:14 PM

Hey that's a picture of the carbs I bought from one of our members. I got them for $40.00 I am learningalot about carbs with this purchase

jbanst · December 22, 2011, 08:29:13 PM

Quote from: BaltimoreGS on December 22, 2011, 02:56:57 PM
No problem, good luck

-Jessie

Got the caps off. Very easy. How many turns should they be out? Do you screw them in all the way, then screw them out x amount of times?

oh hey, btw, that fork seal video of yours on youtube is freaking awesome. that's another one of my projects this winter and I'll definitely be referencing your video!

BaltimoreGS · December 22, 2011, 08:53:01 PM

You got the idea down, you screw them in just til they seat and then back them out. 2.5 turns out is your starting point, then fine tune from there. If you near 4 turns out, something is off in your jetting.

Glad you found the fork seal video helpful! I'm planning to do one on inserting the engine in the frame when I get time. If you have a newer GS you will need to get a special tool to break the bolt in the bottom of your forks loose. Motion Pro makes one that isn't too pricey. I think you'll find the GS to be an easy bike to work on

-Jessie

News:

Fuel Mixture Screws 2005 GS500F