2002 WR426, Carb valve seat removal ??
Posted January 08, 2009 - 09:43 PM
I got the carb off the bike, and I dropped the bowl. When removing the float, I noticed that the needle valve was stuck in the valve seat. After some solvent, and time I was able to remove, much black sledge had glued the valve in place, typical with evaporating gas.
The valve seat is also stuck, the valve seat isn't round, and has some flat sides, does it need to be unscrewed to remove?? Drawings I've seen are not really clear. Some images look like there is threads on the seat, another drawing looks like it's held in place with an O-ring. I haven't tried to muscle anything--- YET.(lol)
Looking at other threads here, it looks like from 2003 on, the seat is pressed in, and older models have an o-ring and maybe a washer and nut holding it in under the screen. I really don't want to try to pluck out the screen with a pick until I'm sure how it comes out. I don't think carb cleaner and compressed air will get out the black sledge.
I'm debating dunking the lower half of the carb below the TPS, just to make sure I get rid of all the varnish. Before I dip, I need to make sure I have all the o-rings out, and figure out the valve seat issue. I'll disassemble before the dunk.
Posted January 09, 2009 - 10:29 AM
Posted January 09, 2009 - 01:53 PM
My carb has the screw that holds in the Seat. I was thinking that there was another screw under the screen, but the seat was being held in with the o-ring and black tar left by the old gas.
I let it sit over night soaking in breakfree, and by grabbing the seat with some nylon teasers, and rocking the seat back and forth, I was able to lift it out without damage.
I'll get the carb back in the bike this PM, and I have a youngster coming over to kick it for a while.
Thanks for the help.