Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > GasGas Enduro Technical Forums > Enduro Intake/Carburetion - 2 stroke

Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


Reply
 
Thread Tools Display Modes
  #1  
Old 09-21-2017, 04:44 PM
Davehuge's Avatar
Davehuge Davehuge is offline
Senior Member
 
Join Date: May 2017
Location: English but now based in South of France.
Posts: 470
Default Float valve seat removal...?

Hi all

I have a 2004 EC300 witn a PWK38 ASI carb.

1. Can anyone tell me how to remove the float valve seat without damaging it?

2. Can anyone tell me the dimensions of the O ring?


I need to remove it and replace the O ring as it's leaking and causing the float bowl to overflow.

Thanks, Dave.


Reply With Quote


  #2  
Old 09-21-2017, 08:24 PM
(F5)'s Avatar
(F5) (F5) is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Wellington New Zealand
Posts: 2,063
Default

You know my brain is not accessing the information on pwk. I know the 28s are just in the body.
Either way check for hairs and crud in the tank. Esp once on reserve. Mate's one emptied in my van. Took months to get rid of the smell even after we ripped carpet out.

A ball bearing dropped down the hole and tapped smartly with a punch can resurface the hole often.
__________________
'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
Reply With Quote
  #3  
Old 09-22-2017, 04:09 AM
Davehuge's Avatar
Davehuge Davehuge is offline
Senior Member
 
Join Date: May 2017
Location: English but now based in South of France.
Posts: 470
Default

Hi F5

The float valve is closing and sealing correctly in the valve seat.

The problem is the fuel still flows around the outside of the valve seat, I'm guessing the O ring has failed, I'm guessing there's an O ring in there?!

Has anyone ever removed the valve seat?

Thanks, Dave.
Reply With Quote
  #4  
Old 09-22-2017, 05:25 AM
Zman's Avatar
Zman Zman is offline
Platinum Level Site Supporter
 
Join Date: Apr 2010
Location: Burbs of Chicago
Posts: 1,818
Default

Can you spray it with some lube and then use two small, sharp, flat blade screw drivers on opposing sides to work it up/out by using the carb body as the fulcrum?
Reply With Quote
  #5  
Old 09-22-2017, 06:41 AM
gasgasman's Avatar
gasgasman gasgasman is offline
Super Moderator
 
Join Date: Jul 2006
Location: Pearland Texas
Posts: 4,594
Default

There are some videos on YouTube showing how to remove the valve.
Reply With Quote
  #6  
Old 09-22-2017, 07:22 AM
pscook's Avatar
pscook pscook is offline
Platinum Level Site Supporter
 
Join Date: Oct 2011
Location: Shoreline, WA
Posts: 1,164
Default

I believe the seal is on the end of the needle, and the seat in the carb is brass. Check the end of the float needle for wear; also check the string tip at the other end of the needle - if it doesn't have any "spring," then it can't press the rubber seal into the seat.

Last, as above, use a ball bearing to lightly "reshape" the brass seat inside of the carb body, if everything else checks out. However, for cost and hassle, I would probably just buy a new float needle before I start trying to modify anything inside the carb. It's likely less than $10 for a new needle, and with that common of a carb they have to be everywhere. Maybe try Sudco?
__________________
Phil
(New bike pending...)
Reply With Quote
  #7  
Old 09-22-2017, 03:18 PM
(F5)'s Avatar
(F5) (F5) is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Wellington New Zealand
Posts: 2,063
Default

Mikuni ones look like this
http://www.frankmxparts.com/WebRoot/...mxparts-03.jpg

I used to buy spare o-rings as the old ones get flogged out. Still can't quite picture the lager pwk. Have one apart in garage but hangover prevents my will to go look at it.
__________________
'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
Reply With Quote
  #8  
Old 09-23-2017, 09:05 AM
pscook's Avatar
pscook pscook is offline
Platinum Level Site Supporter
 
Join Date: Oct 2011
Location: Shoreline, WA
Posts: 1,164
Default

Quote:
Originally Posted by (F5) View Post
Mikuni ones look like this
http://www.frankmxparts.com/WebRoot/...mxparts-03.jpg

I used to buy spare o-rings as the old ones get flogged out. Still can't quite picture the lager pwk. Have one apart in garage but hangover prevents my will to go look at it.
Here's the PWK "Float Valve, complete:"


Keihin P/N 1062-814-2100, Sudco order number 018-504

Note the rubber tip which seats against the brass or alloy carb body. The rubber tip can get cut or damaged, or just worn out after time. And the spring tip can wear out or stick, which will allow leaking as well.
__________________
Phil
(New bike pending...)
Reply With Quote
  #9  
Old 09-23-2017, 09:21 AM
Zman's Avatar
Zman Zman is offline
Platinum Level Site Supporter
 
Join Date: Apr 2010
Location: Burbs of Chicago
Posts: 1,818
Default

He needs to remove the brass seat not the needle. The brass seat is sealed to the aluminum carb body with an o-ring that has gone bad in his carb.

https://www.bing.com/images/search?v...x=0&ajaxhist=0
Reply With Quote
  #10  
Old 09-23-2017, 06:25 PM
(F5)'s Avatar
(F5) (F5) is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Wellington New Zealand
Posts: 2,063
Default

Ahh yes. That's what they look like. The 28s are direct into ally. That larger ones pressed in brass. Try the ball bearing and new tip needle but also have a real good look in there and back flush so any debris is ejected out the inlet. Hairs are particularly troublesome.
__________________
'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing Float Seat ORing on 2012 GLantern Enduro Intake/Carburetion - 2 stroke 9 11-30-2013 12:12 AM
Power valve flapper removal Krasi Enduro Engine - 2 stroke 14 05-29-2011 07:15 AM
Power Valve Removal cdn280 Enduro Engine - 2 stroke 6 01-23-2010 05:34 PM
Ohlins Base valve removal PEB Enduro Suspension 5 09-01-2008 07:55 PM
KEIHIN float valve nhrider Enduro Intake/Carburetion - 2 stroke 1 06-17-2008 01:10 PM




All times are GMT -5. The time now is 09:50 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org