Hi all
2012 s40 with about 8500 miles. Just bought it beginning this last summer. Had a great time riding it throughout the summer. Well maintained bike, very clean, everything worked perfect to start out with. But around August or so it started having problems where it would stall and die at 40 mph when I pulled in the clutch to come to a stop. This progressed to where any time I was at a stop light I would have to constantly rev the engine or it would die. Sometimes even this wouldn't help. I started using a little Seafoam in the gas and that seemed to help but only for a while. The problem came back to the point where the bike was almost unrideable.
Previous owner said carb had never been cleaned so I decided to take a stab at it this weekend. I am not very mechanically inclined but I like to learn so I have been reading up on this web site and watching videos. Getting the carb off was quite a learning experience but finally managed it and started taking it apart and cleaning today. Had a couple of questions for you all that I am hoping you might be able to help me with. Pictures attached here for reference:
https://imgur.com/gallery/ZF2Wgna1) This is my first time at this so I don't really know what "dirty" looks like, but when I opened things up I didn't think it looked bad at all. There was some build up, but it wasn't like some videos I watched where spraying carb cleaner on it left a pile of grime on the bottom of the bowl.
Anyway, when I detached the float bowl, I got the jets out fine and I have them soaking in carb cleaner. But I could not figure out how to detach the float itself. The pin would not move and I did not want to force it. My question, though, is: do you think this is absolutely necessary? Like I said it doesn't look all that dirty to begin with and if the float weren't working I would think the symptoms would be different but I am not sure. The action of the float seems good. Seems to move up and down ok. I put 3 pictures of the float bowl area in the link above. Wondering what you all think.
2) I screwed up a little (hopefully not a lot). I removed the fuel/air mixture screw (jet?) from the side of the carb (see picture #4). I noticed the spring but somehow missed a tiny washer and o-ring until I looked down and noticed them in my work area (arg!). Anyway, I am not sure the order they fit back together now. Can anybody help me?
Oh yeah, before I removed the fuel/air mixture screw I did tighten it all the way and counted how many turns to full stop. So I know to back it out that much on reassembly.
Thanks in advance!
Edit: I should have done a little googling before posting question #2. Here is a parts diagram for the carb:
https://www.suzukipartshouse.com/oemparts/a/suz/506b36ccf870022ba8af9ea5/carb...This confirms that the order of fuel/air idle mixture jet is (starting at threads) spring, washer, o-ring.