• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

pilot screws

  • Thread starter Thread starter terrylee
  • Start date Start date
T

terrylee

Guest
Ok this is sort of a continuation of my idiot thread. Got the bike running pretty well and it flys down the road. The one concern I have is the air/fuel mixture screw doesn't seem to be working properly. They have a new o-ring at the top and the tips aren't broken.When attempting the highest rpm method, they slow the bike way down when turned all the way in, but don't kill it. And it seems to only like 1 and 1/2 turns out, and any more and there is no difference in rpms. My manual shows a picture of the screw and it's parts (but for a 400 or 425, not a 450). It shows the screw then spring, then a washer, and lastly a very small o-ring on the end. The one on the 450 only has o-ring near top and a spring nothing else. Does anyone have a 450 and could tell me what parts are suppose to be in there with the pilot screw. Sorry should have call these idle mixture screws! terrylee:confused:
 
Last edited:
I don't deal with the 450 carbs, as they are just a bit different.

Have you looked at Flaming Chainsaw's guide for them?

.
 
Washer

Washer

Yes, you are missing the washer. spring,washer, o'ring. Perhaps part was lost upon re-installation by the last person working on it. Bob
 
Are you sure the old o-ring and washer aren't still in there? I take a long screw and take them out.
If you are missing the washer you do need it.
 
I did check Chainsaws rebuild and only showed a spring and the screw. I have dug around in there and nothing is coming out and I see nothing in there. I also bought the o-ring kit from cycle-o-rings and it included the o-ring for the top off the screw, but not a really small one for the end of the screw. I may have not seen the washer fall out when I took screws out, and I'm pretty sure the tiny o-ring for the end was in very tiny pieces and ended up in the bottom the carb. bowls. Anyone know where I can get the washers and tiny o-rings for the end of the screw? terrylee
 
Suzuki shop manual only shows screw/o-ring/spring on what they are calling the pilot screw. Just pulled mine out to take a look and it matches. Hope that helps.
 
I can tell you from my rebuild there's only the screw, O ring at the top of the screw under the head, and the spring. No washer, the 425's have a different screw etc.
 
Thanks all of you so much. I thought the 400-425 might have different set up on idle mixture scew (pilot screw). I also think later years of 450s have screw, spring, washer, o-ring set up. Makes me feel better that I didn't loose anything and they' re ok. So I'm good with o-ring at top and spring! terrylee:)
 
Yep, definitely all good! Not sure on the later models, but the earlier 400's/425's spring doesn't fit our mixture screws either...
 
You must log in or register to reply here.

Similar threads

SamLack99
[1982 GS750T] Pilot Screw Adjustment and Vacuum Sync Confusion...
Replies
10
Views
197
rphillips
R
L
Hanging Idle (I know, but bear with me) and different carbs
Replies
10
Views
165
bwringer
bwringer
Motodog74
Sharing my results after fine tuning my '79 GS1000
Replies
7
Views
159
Motodog74
Motodog74
B
VM Carbs rebuild question
Replies
5
Views
162
zed1015
zed1015
B
Continued Hard Starting Woes
Replies
14
Views
260
Alexander
Alexander
Back
Top