scott s
XS650 Guru
changing the plugs. Started up with one kick. Here is a pick of the old plugs.
View attachment 93679
View attachment 93681
Usually , FOULED plugs from being too rich will cause starting issues. Those plugs are certainly not fouled. The LH one (or the one on the left in the pic) is running richer than the other, but I'd say that neither is rich.
If you truly are running lean, I'm not sure how that would cause an issue with the plugs that would cause starting problems. I don't see too much horribly wrong with those plugs. If anything, you're a little lean on the RH plug (in the pic).
If the bike truly is lean, be careful riding it until you get it sorted. Severe damage can occur from running them lean, including overheating, burning a valve or holing a piston.
Some things that can cause a lean condition:
-vacuum leak
-improper timing or advance
-jetting
-air mixture screw settings
-pod filters (without rejetting properly)
And if you decide to start tuning the carbs, it's a wise idea (some would say imperative) to tune up the bike first; valve adjustment, cam chain adjustment, timing. ONLY then should you tune carbs.
What if you have a valve that's too tight and that's really the issue? Any carb tuning you do is just masking the real issue... a "band aid", so to speak. Not saying that you DO have a tight valve....just giving you an example.